阅读说明：本技术 现浇多曲面双层斜交混凝土网格结构模架体系及施工方法 (Cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system and construction method ) 是由 杨锋 赵海 朱建红 赵旭 孙晓阳 陈新喜 李赟 余少乐 吴光辉 于 2019-10-30 设计创作，主要内容包括：本发明涉及一种现浇多曲面双层斜交混凝土网格结构模架体系及施工方法,该模架体系包括：支设于待形成的双层斜交混凝土网格结构位置处的支撑架体,所述支撑架体的顶面形成有适配于待形成的双层斜交混凝土网格结构内表面的支撑曲面；铺设于所述支撑曲面之上供形成一层斜交混凝土网格结构的第一支模结构；以及支设于所述第一支模结构之上供形成另一层斜交混凝土网格结构的第二支模结构。本发明支撑架体上设计有支撑曲面,以适配于待形成的双层斜交混凝土网格结构,形成契合曲面曲率变化的支撑架体,且满足第一支模结构和第二支模结构的承载力要求,解决现有技术中支撑脚手架难以实现球壳类多曲率造型支撑的问题。(The invention relates to a cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system and a construction method, wherein the formwork system comprises: the supporting frame body is supported at the position of the double-layer diagonal concrete grid structure to be formed, and a supporting curved surface adaptive to the inner surface of the double-layer diagonal concrete grid structure to be formed is formed on the top surface of the supporting frame body; the first supporting formwork structure is laid on the supporting curved surface and used for forming a layer of oblique concrete grid structure; and a second formwork structure erected on the first formwork structure for forming another layer of oblique concrete grid structure. The supporting frame body is provided with the supporting curved surface so as to be adapted to a double-layer oblique concrete grid structure to be formed, the supporting frame body which is matched with the curvature change of the curved surface is formed, the bearing capacity requirements of the first supporting mold structure and the second supporting mold structure are met, and the problem that the supporting scaffold in the prior art is difficult to realize the multi-curvature spherical shell type supporting is solved.)

1. The utility model provides a cast-in-place double-deck oblique crossing concrete grid structure die carrier system of many curved surfaces which characterized in that includes:

the supporting frame body is supported at the position of the double-layer diagonal concrete grid structure to be formed, and a supporting curved surface adaptive to the inner surface of the double-layer diagonal concrete grid structure to be formed is formed on the top surface of the supporting frame body;

the first supporting formwork structure is laid on the supporting curved surface and used for forming a layer of oblique concrete grid structure; and

and the second formwork structure is supported on the first formwork structure and is used for forming another layer of oblique concrete grid structure.

2. The cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system according to claim 1, further comprising an outer layer supporting frame body supported on the first formwork structure, wherein the outer layer supporting frame body is supported against the bottom of the second formwork structure, and a part of the outer layer supporting frame body penetrates through the first formwork structure and is fixedly connected with the supporting frame body.

3. The cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of claim 1, further comprising radial multi-curvature keels laid on the support frame body and annular circular secondary keels fixed on the radial multi-curvature keels;

the radial multi-curvature keel is matched with the curvature of the inner surface of the double-layer oblique concrete grid structure to be formed;

the circular secondary joist of hoop and the camber looks adaptation of the double-deck oblique crossing concrete grid structure internal surface that treats to form, the circular secondary joist of hoop support connect in the bottom of first template structure.

4. The cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system according to claim 3, further comprising a radial form-finding batten fixedly connected to the annular circular secondary keel, wherein the curvature of the radial form-finding batten is matched with the curvature of the inner surface of the double-layer diagonal concrete grid structure to be formed, and the radial form-finding batten is fixedly connected with the first formwork structure.

5. The cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system as claimed in claim 1, wherein the second formwork structure comprises a second bottom formwork, a second top formwork and a second lining formwork clamped between the second bottom formwork and the second top formwork;

the second top die is a multi-curvature glass fiber reinforced plastic template, the shape of the multi-curvature glass fiber reinforced plastic template is matched with the shape of the space between the second lining dies, and an arc-shaped reinforcing plate is embedded in the multi-curvature glass fiber reinforced plastic template close to the surface.

6. A construction method of a cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system is characterized by comprising the following steps:

erecting a support frame body at the position of a double-layer diagonal concrete grid structure to be formed, wherein a support curved surface adapted to the inner surface of the double-layer diagonal concrete grid structure to be formed is formed on the top surface of the erected support frame body;

constructing a first formwork structure on the supporting curved surface, and pouring by using the first formwork structure to form a layer of oblique concrete grid structure; and

and constructing a second formwork structure on the first formwork structure, and pouring by using the second formwork structure to form another layer of oblique concrete grid structure.

7. The construction method of a cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system according to claim 6, characterized in that before constructing the second formwork structure, the construction method further comprises:

and erecting an outer support frame body on the first formwork structure, enabling a part of the outer support frame body to penetrate through the first formwork structure and be fixedly connected with the support frame body, and utilizing the outer support frame body to support the second formwork structure.

8. The construction method of a cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system according to claim 6, characterized by further comprising, before constructing the first formwork structure:

providing a radial multi-curvature keel, wherein the radial multi-curvature keel is matched with the curvature of the inner surface of a to-be-formed double-layer oblique concrete grid structure, and fixing the radial multi-curvature keel on the supporting curved surface;

the circular secondary joist of hoop is provided, the circular secondary joist of hoop and the camber looks adaptation of the double-deck oblique crossing concrete grid structure internal surface of treating to form will the circular secondary joist of hoop is arranged in on the radial many curvatures fossil fragments and with radial many curvatures fossil fragments are connected fixedly, utilize the circular secondary joist of hoop supports first formwork structure.

9. The construction method of the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system according to claim 8, further comprising:

and providing an oblique back stay bar, vertically jacking the oblique back stay bar at the bottom of the radial multi-curvature keel, and fixedly connecting the oblique back stay bar with the support frame body.

10. The construction method of the cast-in-place multi-curved double-layer diagonal concrete grid structure formwork system according to claim 6, wherein when a second formwork structure is constructed, a second top formwork of the second formwork structure adopts a multi-curvature glass reinforced plastic formwork, and when the multi-curvature glass reinforced plastic formwork is manufactured, an arc reinforcing plate is embedded in the multi-curvature glass reinforced plastic formwork close to the surface.

Technical Field

The invention relates to the field of building construction engineering, in particular to a formwork system of a cast-in-place multi-curved surface double-layer diagonal concrete grid structure and a construction method.

Background

The construction of the oblique crossing grid structure is a novel steel structure system or a steel pipe concrete structure system gradually formed in the 80 th 19 th century under the promotion of the development of a steel frame support body. However, at present, the design and construction of a cast-in-place multi-curved-surface diagonal concrete grid structure are extremely rare, and the construction difficulty is extremely high.

The important construction difficulty of the cast-in-situ multi-curved-surface diagonal concrete grid structure is the scaffold supporting engineering and the formwork engineering. The conventional supporting surface at the top of the supporting frame in the existing construction technology is mostly a plane, and the design of the space curved surface shape of a multi-curved-surface structure is difficult to realize.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides a formwork system of a cast-in-place multi-curved surface double-layer oblique crossing concrete grid structure and a construction method thereof, and solves the problem that the existing supporting surface at the top of a supporting frame is mostly a plane and the spatial curved surface shape design of a multi-curved surface structure is difficult to realize.

The technical scheme for realizing the purpose is as follows:

the invention provides a cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system, which comprises:

the supporting frame body is supported at the position of the double-layer diagonal concrete grid structure to be formed, and a supporting curved surface adaptive to the inner surface of the double-layer diagonal concrete grid structure to be formed is formed on the top surface of the supporting frame body;

the first supporting formwork structure is laid on the supporting curved surface and used for forming a layer of oblique concrete grid structure; and

and the second formwork structure is supported on the first formwork structure and is used for forming another layer of oblique concrete grid structure.

The supporting frame body is provided with the supporting curved surface so as to be adapted to a double-layer oblique concrete grid structure to be formed, the supporting frame body which is matched with the curvature change of the curved surface is formed, the bearing capacity requirements of the first supporting mold structure and the second supporting mold structure are met, and the problem that the supporting scaffold in the prior art is difficult to realize the multi-curvature spherical shell type supporting is solved.

The cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system is further improved in that the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system further comprises an outer layer supporting frame body arranged on the first formwork structure in a supporting mode, the outer layer supporting frame body is supported at the bottom of the second formwork structure in a supporting mode, and part of the outer layer supporting frame body penetrates through the first formwork structure and is fixedly connected with the supporting frame body.

The cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system is further improved in that the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system further comprises a radial multi-curvature keel paved on the support frame body and an annular circular secondary keel fixed on the radial multi-curvature keel;

the radial multi-curvature keel is matched with the curvature of the inner surface of the double-layer oblique concrete grid structure to be formed;

the circular secondary joist of hoop and the camber looks adaptation of the double-deck oblique crossing concrete grid structure internal surface that treats to form, the circular secondary joist of hoop support connect in the bottom of first template structure.

The cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system is further improved in that the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system further comprises a radial shape-finding batten fixedly connected to the annular circular secondary keel, the curvature of the radial shape-finding batten is matched with the curvature of the inner surface of a to-be-formed double-layer diagonal concrete grid structure, and the radial shape-finding batten is fixedly connected with the first formwork structure.

The cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system is further improved in that the second formwork structure comprises a second bottom formwork, a second top formwork and a second lining formwork clamped between the second bottom formwork and the second top formwork;

the second top die is a multi-curvature glass fiber reinforced plastic template, the shape of the multi-curvature glass fiber reinforced plastic template is matched with the shape of the space between the second lining dies, and an arc-shaped reinforcing plate is embedded in the multi-curvature glass fiber reinforced plastic template close to the surface.

The invention also provides a construction method of the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system, which comprises the following steps:

erecting a support frame body at the position of a double-layer diagonal concrete grid structure to be formed, wherein a support curved surface adapted to the inner surface of the double-layer diagonal concrete grid structure to be formed is formed on the top surface of the erected support frame body;

constructing a first formwork structure on the supporting curved surface, and pouring by using the first formwork structure to form a layer of oblique concrete grid structure; and

and constructing a second formwork structure on the first formwork structure, and pouring by using the second formwork structure to form another layer of oblique concrete grid structure.

The construction method of the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system is further improved in that the construction method further comprises the following steps before the construction of a second formwork structure:

and erecting an outer support frame body on the first formwork structure, enabling a part of the outer support frame body to penetrate through the first formwork structure and be fixedly connected with the support frame body, and utilizing the outer support frame body to support the second formwork structure.

The construction method of the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system is further improved in that the construction method further comprises the following steps before the construction of the first formwork structure:

providing a radial multi-curvature keel, wherein the radial multi-curvature keel is matched with the curvature of the inner surface of a to-be-formed double-layer oblique concrete grid structure, and fixing the radial multi-curvature keel on the supporting curved surface;

the circular secondary joist of hoop is provided, the circular secondary joist of hoop and the camber looks adaptation of the double-deck oblique crossing concrete grid structure internal surface of treating to form will the circular secondary joist of hoop is arranged in on the radial many curvatures fossil fragments and with radial many curvatures fossil fragments are connected fixedly, utilize the circular secondary joist of hoop supports first formwork structure.

The construction method of the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system further improves the method and also comprises the following steps:

and providing an oblique back stay bar, vertically jacking the oblique back stay bar at the bottom of the radial multi-curvature keel, and fixedly connecting the oblique back stay bar with the support frame body.

The construction method of the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system is further improved in that when a second formwork structure is constructed, a second top formwork of the second formwork structure adopts a multi-curvature glass fiber reinforced plastic formwork, and when the multi-curvature glass fiber reinforced plastic formwork is manufactured, an arc reinforcing plate is embedded in the multi-curvature glass fiber reinforced plastic formwork close to the surface.

Drawings

FIG. 1 is a schematic perspective view of a layer of diagonal concrete grid structure in a cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the present invention.

FIG. 2 is a schematic perspective view of another layer of diagonal concrete grid structure in the formwork system of the cast-in-place multi-curved surface double-layer diagonal concrete grid structure of the present invention.

FIG. 3 is a top view of a support frame in the cast-in-place multi-curved double-layer diagonal concrete grid structure formwork system of the present invention.

FIG. 4 is a partial cross-sectional view of a support frame body in the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the present invention.

Fig. 5 to 6 are schematic diagrams illustrating the exploded steps of the process of erecting the support frame in the cast-in-place multi-curved double-layer diagonal concrete grid structure formwork system of the present invention.

Fig. 7 to 8 are schematic diagrams illustrating the steps of mounting radial positioning cross bars, circumferential positioning cross bars, radial multi-curvature keels and circumferential circular cross keels on a support frame in the cast-in-situ multi-curved surface double-layer diagonal concrete grid structure formwork system.

Fig. 9 is an enlarged schematic view of a part of the structure in fig. 8.

FIG. 10 is a schematic structural view of laying radial form-finding battens in the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the invention.

Fig. 11 is an enlarged schematic view of a part of the structure in fig. 10.

Fig. 12 is a schematic structural view of a first bottom die installed in the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the invention.

FIG. 13 is a schematic structural view of a first lining mold installed in the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the present invention.

FIG. 14 is a schematic structural view of a first lining mold in the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the present invention.

Fig. 15 is a schematic structural view of installation of a first structural steel bar and a first top form in the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the invention.

Fig. 16 is a schematic decryption diagram of the first structural steel bars in the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the invention.

Fig. 17 is a schematic structural view of a node of a first structural reinforcement in the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the invention.

FIG. 18 is a schematic structural view of a reinforced first top mold in the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the present invention.

Fig. 19 is a schematic structural view of a vibrating rod in the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the invention.

Fig. 20 is a schematic structural view of a second lining mold and a second top mold installed in the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the invention.

FIG. 21 is a schematic structural view of a second top mold in the cast-in-place multi-curved double-layer diagonal concrete grid structure formwork system of the present invention.

FIG. 22 is a schematic structural view of a reinforced second top mold in the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the present invention.

FIG. 23 is a flow chart of a construction method of the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the invention.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

Referring to fig. 1, the invention provides a cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system and a construction method, which are used for constructing and forming a diagonal concrete grid structure which is integrally similar to a hemisphere and is internally provided with a rhombic hollow structure, and referring to fig. 2, the diagonal concrete grid structure has an inner layer and an outer layer. The invention adopts the integral shape of the multi-curved-surface space spherical shell structure of the conventional material component, the support frame body can provide stable and firm support for the upper double-layer clamping mold system, the rhombic injection molding lining mold is utilized to reversely mold the concrete with the complex hollowed-out form, and the concrete vibration quality in the complex narrow space is also improved. The cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system and the construction method thereof are explained below with reference to the accompanying drawings.

Referring to fig. 4, a partial cross-sectional view of a support frame body in the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the present invention is shown. Referring to fig. 18, a schematic structural diagram of a reinforced first top mold in the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the present invention is shown. The cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the invention is explained with reference to fig. 4 and 18.

As shown in fig. 4 and 18, the cast-in-place multi-curved double-layer diagonal concrete lattice structure formwork system of the present invention includes a support frame body 20, a first formwork structure and a second formwork structure, wherein the support frame body 20 is supported at a position of a double-layer diagonal concrete lattice structure to be formed, and a support curved surface 20a adapted to an inner surface of the double-layer diagonal concrete lattice structure to be formed is formed on a top surface of the support frame body 20; the first formwork structure is laid on the supporting curved surface 20a to form a first formwork structure of a layer of oblique concrete grid structure; the second formwork structure is supported on the first formwork structure for forming another layer of oblique concrete grid structure.

The supporting curved surface 20a formed by the supporting frame body 20 provides a supporting and positioning function for the first supporting structure and the second supporting structure.

As shown in fig. 1 and 2, the cast-in-place multi-curved surface double-layer diagonal concrete grid structure of the invention comprises a diagonal concrete grid structure 10a and a diagonal concrete grid structure 10b, wherein the two structures are both hemispheroid integrally, the top of the two structures is provided with an opening, a plurality of rhombic hollow structures are formed inside the two structures, and the edges of the hollow structures are arc-shaped and have multi-curvature change. The supporting base 11 is disposed at the bottom of the diagonal concrete grid structure 10a and the diagonal concrete grid structure 10b, the supporting base 11 includes a plurality of supporting columns 111, an inner ring beam 112 and an outer ring beam 113 disposed on the supporting columns 111, and a cross beam 114 supported and connected between the inner ring beam 112 and the outer ring beam 113, the plurality of supporting columns 111 are arranged in a circle and supported at the bottom of the corresponding inner ring beam 112 and outer ring beam 113. The diagonal concrete grid structure 10a is located on the inner ring beam 112, the diagonal concrete grid structure 10b is located on the outer ring beam 113, and cast-in-place construction is adopted for the diagonal concrete grid structure 10a and the diagonal concrete grid structure 10 b. The formwork system of the invention is used for cast-in-place construction of the diagonal concrete grid structure 10a and the diagonal concrete grid structure 10 b.

In one embodiment, as shown in fig. 3 to 5, the plane projection of the support frame 20 is a circle, the support frame 20 includes radial horizontal rods 22 arranged along the radial direction and vertical rods 21 arranged along the radial horizontal rods 22 at intervals, the height of the vertical rods 21 gradually increases from the outside to the inside along the radial direction, and the heights of the vertical rods 21 in the same annular direction are the same. The uprights 21 are supported vertically on a supporting surface, which may be the ground or a floor surface. The vertical rods 21 are arranged at intervals in the circumferential and radial directions, the radial horizontal rods 22 are arranged at intervals in the radial direction and are also arranged at intervals in the height direction of the vertical rods 21, and the plurality of radial horizontal rods 22 connect the plurality of vertical rods 21 arranged in the radial direction together, so that the support frame body 20 connected in a staggered manner in the transverse direction and the longitudinal direction is formed.

Further, the support frame body 20 further comprises a circumferential arc-shaped rod 23, and the circumferential arc-shaped rod 23 is disposed at the intersection of the vertical rod 21 and the radial horizontal rod 22 and is fixedly connected with the vertical rod 21 and the radial horizontal rod 22. The annular arc-shaped rod 23 is of a closed circular structure, a plurality of vertical rods positioned on the same ring are connected together by the annular arc-shaped rod 23, and the radial horizontal rod 22 correspondingly connected with the vertical rods is also fixedly connected. The annular arc-shaped rods 23 are also arranged at intervals along the height direction of the vertical rod 21. Utilize hoop arc pole 23 to connect into whole with pole setting 21 and radial horizontal pole 22, improve the overall stability and the bulk strength of supporting frame body 20.

Still further, as shown in fig. 6, the support frame 20 further includes horizontal cross braces 24 and vertical cross braces 25, the horizontal cross braces 24 are disposed in a plane formed by the connection of the circumferential arc-shaped rods 23 and the radial horizontal rods 22, and are fixedly connected to the corresponding circumferential arc-shaped rods 23, the corresponding radial horizontal rods 22 and the corresponding vertical rods 21; the vertical cross braces 25 are arranged in a plane formed by the connection of the vertical rods 21 and the radial horizontal rods 22, and are fixedly connected with the corresponding vertical rods 21, the corresponding radial horizontal rods 22 and the corresponding annular arc-shaped rods 23. Preferably, the horizontal scissor supports 24 and the vertical scissor supports 25 are arranged in a pulled-through manner in the plane in which they are arranged, i.e. the horizontal scissor supports 24 and the vertical scissor supports 25 are arranged in the plane in which they are arranged from one end of the plane to the other end opposite to the one end.

Specifically, the support frame body 20 is formed by erecting a steel pipe scaffold, is integrally arranged in a circular tower shape, and is intersected with a radial horizontal rod 22 by an annular arc-shaped rod 23 on the plane, wherein the annular arc-shaped rod is a concentric circle with gradually increased radius, and the radial arc-shaped rod is uniformly divided at the same angle by taking the circle center as an intersection point. The circumferential arc-shaped rod 23 is formed into a corresponding radian by adopting a pipe bending machine through cold bending according to the circular radius of the position, and the vertical rod 21, the radial horizontal rod 22, the horizontal scissor brace 24 and the vertical scissor brace 25 all adopt straight steel pipes. When the horizontal cross brace 24 is provided, in order to avoid disconnection due to a break angle, the horizontal cross brace needs to be additionally provided to ensure continuity when the span is not satisfied.

The size of the support frame 20 is set according to the size of the diagonal concrete grid structure 10a to be supported. In this embodiment, support frame body 20 overall height is 23.7m, and radius 30m arranges in on building structure's one deck floor, and in order to avoid the load too big, adopts the back stay structure to consolidate in the bottom of this one deck floor, and this back stay structure preferred adopts steel pipe scaffold, sets up under the projection that supports frame body 20. Preferably, the support frame body 20 adopts fastener type steel pipe scaffold, the step pitch is 1200mm, the circumferential interval is 800mm, the outermost side of the longitudinal interval is 1200mm, the innermost side is 700mm, the 200mm position of the bottom of the vertical rod is provided with a floor sweeping rod, and two horizontal rods are encrypted at the top two-step pitch.

In order to further enhance the force stability of the support frame 20, as shown in fig. 4, a square frame 20 'is erected at the center of the support frame 20, the horizontal and longitudinal spacing of the square frame 20' is 1200mm × 1200mm, the step pitch is 1200mm, and the square frame and the support frame 20 are mutually tied for 3 spans.

The horizontal cross braces on the support frame body 20 are 4 steps multiplied by 4 steps, one is arranged every 5 steps, 5 steps and 5 steps are arranged on the vertical cross braces, and the periphery of the outer side of the frame body and the inside of the frame body are arranged in a longitudinal and transverse mode by 5 steps.

The support body outside is peripheral and inside moves about freely and quickly 5 stride 4 steps from the end supreme continuous vertical bridging that sets up, and the support body is swept ground pole and top, middle part 4 steps and is set up horizontal bridging 4X 4 and stride, because of the support body is circular support body, for guaranteeing that the bridging does not break off because of the dog-ear, horizontal bridging is pulled through and is arranged, meets the condition that unsatisfied 4X 4 strides, adds the steel pipe fastener overlap joint, makes it satisfy the construction requirement.

In one embodiment, as shown in fig. 7 and 8, the supporting frame further comprises a radial multi-curvature keel 43 laid on the supporting frame body 20 and a circumferential circular cross keel 45 fixed on the radial multi-curvature keel 43; the radial multi-curvature keel 43 is matched with the curvature of the inner surface of the double-layer oblique concrete grid structure to be formed; the circular secondary joist 45 of hoop and the camber looks adaptation of the double-deck oblique crossing concrete grid structure internal surface that treats to form, the circular secondary joist 45 of hoop support connect in the bottom of first template structure.

Preferably, the circular secondary joist 45 of hoop is closed circular structure, through radial many curvatures fossil fragments 43 and with support frame body 20 fixed connection, radial many curvatures fossil fragments 43 are laid along the hemisphere face that supports curved surface 20a at the interval on the radial direction, the circular secondary joist 45 of hoop is laid along the hemisphere face that supports curved surface 20a at the interval on the hoop, this circular secondary joist 45 of annular's wholeness is good, it can be even the transmission for radial many curvatures fossil fragments 43 under it with the effort of the spherical shell concrete structure construction that will treat to form, and then transmit for support frame body 20 by radial many curvatures fossil fragments 43, pass power route reliable and stable, can provide firm stable supporting role for the spherical shell concrete structure construction that treats to form.

Further, the supporting frame further comprises oblique back-supporting rods 44 vertically supported at the bottom of the radial multi-curvature keel 43, the oblique back-supporting rods 44 are arranged at intervals along the radial multi-curvature keel 43, and the oblique back-supporting rods 44 are fixedly connected with the supporting frame body 20. The radial multi-curvature keel 43 is firmly supported on the support frame body 20 through the arranged oblique stay bar 44, the oblique stay bar 44 can uniformly transmit the pressure applied to the radial multi-curvature keel 43 to the support frame body 20, and the stability of the whole stress can be ensured.

Preferably, the diagonal bracing bar 44 comprises a diagonal rod 441 and an adjustable top support 442 connected to the top of the diagonal rod 441; the inclined rod 441 is fixedly connected with a corresponding part of the support frame body 20; the adjustable jacking 442 bears against the bottom of the radial multi-curvature keel 43 by adjusting its own length.

Still further, as shown in fig. 7 and 9, a radial positioning cross bar 41 is further included, the radial positioning cross bar 41 is laid along the radial direction, the radial positioning cross bar 41 is fixedly connected with a corresponding portion of the support frame 20, and an end of the radial positioning cross bar 41 protrudes out of the support frame 20 to form a positioning end for installing a radial multi-curvature keel 43. The radial multi-curvature keel 43 is provided with a mounting base by a radial positioning cross bar 41, and a positioning end formed on the radial positioning cross bar 41 protrudes out of the outermost side of the support frame body 20 by a distance to form a positioning end, preferably, the length of the positioning end is greater than or equal to 250 mm.

The spherical shell body forming machine further comprises a circumferential positioning cross rod 42 arranged on the positioning end, the curvature of the circumferential positioning cross rod 42 is matched with the curvature of the inner surface of a concrete structure of a spherical shell body to be formed, and the circumferential positioning cross rod 42 is fixedly connected with a radial multi-curvature keel 43. Utilize hoop location horizontal pole 42 to support and connect radial many curvatures fossil fragments 43, this hoop location horizontal pole 42 is fixed at the location end of radial location horizontal pole 41, and this hoop location horizontal pole 42 also just locates the outside of supporting frame body 20 for the effect of location support is played in the installation to radial many curvatures fossil fragments 43. Preferably, the circumferential positioning rail 42 is a closed circular structure, the circumferential positioning rail 42 is spaced from the bottom of the support frame 20 to the top, and the circumference of the circumferential positioning rail 42 is gradually reduced from the bottom of the support frame 20 to the top.

Preferably, the circumferential positioning rail 42 is used as a first step of shape-finding of the curved surface, and the circumferential positioning rail 42 is cold-bent by the pipe bender to form a corresponding radian according to the circular positioning radius of the position, which generally requires 3 to 4 times of cold bending. This hoop location horizontal pole 42 is along radial level 22 from supreme equipartition arrangement down to it is fixed through radial location horizontal pole 41 drawknot with pole setting 21, and this hoop location horizontal pole 42 stretches out the pole setting 21 certain distance in the outside, and hoop location horizontal pole 42 is closed circular structure, and it will receive the effort along the circumference evenly transmit for radial location horizontal pole 41 and pole setting 21.

For strengthening the stability of radial positioning horizontal pole 41, with radial positioning horizontal pole 41 along the radial of the pole setting 21 that supports support body 20, every step interval all sets up one along by the structure outside from top to bottom, adopt the fastener fixed radial positioning horizontal pole 41 at least with 3 pole settings 21 that lean on the outside to stretch out the outside pole setting and be not less than 250 mm.

The radial multi-curvature keels 43 and the annular circular secondary keels 45 are the second step and the third step of curved surface shape finding, double steel pipes of cold bending of the pipe bender are adopted according to the vertical positioning radian and the circular positioning radius of the positions, and the annular circular secondary keels 45 are uniformly distributed along the annular direction from bottom to top at intervals of 300 mm. In order to ensure that the radial multi-curvature keel 43 is stressed uniformly and does not deform, the oblique back-supporting rods 44 are arranged along the radial multi-curvature keel 43 at the interval of 500mm, the adjustable jacking 442 of the oblique back-supporting rods 44 is vertically connected and fixed with the bottom of the radial multi-curvature keel 43, and the adjustable jacking needs to be customized and enlarged due to the fact that the double steel pipes of the radial multi-curvature keel 43 are connected through fasteners and have a certain interval. The inclined rod 441 and the vertical rod of the inclined back-bracing rod 44 are not less than 3 times in a pulling way.

Specifically, the upper load is uniformly transmitted to the radial multi-curvature keel 43 through the annular circular secondary keel 45, and then transmitted to the annular positioning cross rod 42, the radial positioning cross rod 41 and the oblique back-bracing rod 44 through the radial multi-curvature keel 43, so that the vertical rod 21 is further transmitted, and the stress stability of the whole body is enhanced.

In one embodiment, as shown in fig. 10 and 11, the formwork structure further comprises a radial form-finding batten 46 fixedly connected to the annular circular secondary joist 45, the curvature of the radial form-finding batten 46 is matched with the curvature of the inner surface of the double-layer diagonal concrete grid structure to be formed, and the radial form-finding batten 46 is fixedly connected with the first formwork structure.

The curvature of the radial form finding battens 46 is adapted to the curvature of the inner surface of the diagonal concrete grid structure to be formed. Preferably, the radial shape-finding battens 46 are 50mm by 80mm battens, and are thicknessed into a required curvature shape by a thicknesser, the thickness direction of the radial shape-finding battens 46 is perpendicular to the annular circular secondary keel 45, the radial shape-finding battens 46 are radially arranged, the distance is less than 200mm, and the annular circular secondary keel 45 is fixedly connected by steel nails.

In one embodiment, as shown in fig. 12, 13 and 15, the first supporting mold structure includes a first bottom mold 31, a first top mold 32 and a first lining mold 33 sandwiched between the first bottom mold 31 and the first top mold 32, and a first structural steel bar 34 is disposed on the first bottom mold 31 between the first lining mold 33.

The first bottom die 31 is laid on the radial form-finding battens 46, the curvature of the first bottom die 31 is adapted to the curvature of the inner surface of an oblique concrete grid structure to be formed, the first bottom die 31 is attached to the radial form-finding battens 46, and the first bottom die 31 and the radial form-finding battens 46 are connected and fixed through steel nails. The first bottom die 31 is a glued wood template with the thickness of 12mm, cut into 300mm × 600mm, and then transversely and fully paved and fixed on the radial shape-finding battens 46. A groove for hiding the lamp is reserved on the surface of the diagonal concrete grid structure, after the first bottom die 31 is installed, a light trough control line is released according to the trend of the light trough, the wood light lines are installed roughly, and one side of the radial shape finding batten 46 is fixed by a self-tapping screw. In order to ensure that the surface of a poured concrete structure is smooth and does not have slurry or irregular protrusions and depressions, after the installation of wooden light lines is completed, secondary treatment is carried out at the joint of the first bottom die 31, in the embodiment, the joint is filled with putty and is polished smoothly, and then a water-based release agent is uniformly coated.

A first lining mold 33 is installed on the first bottom mold 31, and as shown in fig. 13 and 14, the first lining mold 33 is installed on the first bottom mold 31 according to the position of the hollow portion to be formed. The first lining mold 33 is a multi-curvature light hard mold plate with a surface of 4mm thick glass fiber reinforced plastic and an internal injection molding foaming polyurethane filler. The first lining die 33 is manufactured by adopting CNC numerical control engraving to form a multi-curved-surface diamond lining die female die according to a designed three-dimensional template and then repeatedly performing injection molding on polyurethane and glass fiber reinforced plastic materials through die turnover. When the first lining die 33 is installed, the vertical central axis, the top elevation and the bottom elevation are precisely controlled to accurately position. A temporary fixing structure can be arranged at the bottom of the first lining form 33, the first lining form 33 is temporarily fixed on the first bottom form 31 by the temporary fixing structure, after the subsequent first structural steel bars 34 are bound, the temporary fixing structure can be removed, and the first lining form 33 can be clamped by the first structural steel bars 34.

Further, when the first lining form 33 is attached, the first lining form 33 is attached and fixed to the first bottom form 31, and when a gap is formed between the first lining form 33 and the first bottom form 31, the gap is filled with the foamed polyurethane; and (3) coating a layer of putty on the surface of the first lining mold 33, polishing to form a putty surface layer, and coating a layer of release agent on the putty surface layer.

The first lining mold is arranged in the first supporting mold structure, and is detached after concrete is poured to form the required hollow structure model, so that the advantage of good forming effect is achieved, when the first lining mold is manufactured, the corresponding lining mold can be accurately manufactured according to the curvature of the required model, compared with the existing wood template loose assembly and customized steel mold, the construction cost can be greatly saved, the construction difficulty is reduced, and the forming quality and the forming effect are good.

After the first lining form 33 is mounted on the first bottom form 31, the first structural reinforcing bars 34 are bound on the first bottom form 31, and the reinforcing bars are bound from bottom to top in a segmented manner during binding. Referring to fig. 1, the oblique concrete grid structure 10a is in the shape of an oblique concrete column except for a hollow structure, the first structural steel bars 34 are disposed in the oblique concrete column, when the first structural steel bars 34 are bound, the construction space is located between adjacent gambling formwork 33, the construction space is narrow, the oblique concrete column is an irregular variable cross section, and accordingly the first structural steel bars 34 are a multi-curvature complex woven steel bar mesh with an irregular variable cross section. When the first structure reinforcing bar 34 of ligature bottommost, can lay the stirrup in first structure reinforcing bar 34 earlier and set for the position, then alternate main muscle in the stirrup, carry out position control with the main muscle according to the camber of first structure, after the main muscle and the stirrup of fixed connection good bottom, set up the hook muscle between main muscle. Then when ligature upper portion reinforcing bar, the radian of main muscle in the adjustment lower part reinforcing bar makes its and the camber of waiting to form unanimous, then locates the top of main muscle in the lower part reinforcing bar with the stirrup cover in the upper portion reinforcing bar, then with the main muscle butt joint that corresponds in main muscle in the upper portion reinforcing bar and the lower part reinforcing bar, again with the stirrup in the upper portion reinforcing bar remove to the position of settlement and with the main muscle fixed connection that corresponds in the upper portion reinforcing bar. After the main reinforcements and the stirrups are fixed, the hook reinforcements are connected between the main reinforcements in a pulling and tying mode.

Specifically, as shown in fig. 16, square closed stirrups 342 are provided in the corresponding tie spaces of the first structural reinforcing bars 34, and main reinforcements 341 are provided at intervals along the peripheries of the stirrups 342. A U-shaped open hoop is also provided, the curvature of which varies with elevation, as well as the main rib 241 and the stirrup 342. In order to accurately perform lofting work of the first structural steel bar, according to a design model and a distribution section, sectioning and plotting of a concrete section are performed, and the row spacing and the shape of a main reinforcement, a stirrup, a U-shaped opening reinforcement and a pull hook reinforcement in the inclined column variable section steel bar are determined. For compound on-the-spot installation condition, when the construction, reserve the part of being connected with upper portion reinforcing bar during lower part reinforcement, when upper portion reinforcement, adjust the camber of the reservation part of lower part reinforcing bar, it is unanimous with whole radian to ensure, then overlap the stirrup on this reservation part, again with upper portion reinforcing bar and lower part reinforcing bar butt joint, then shift up the stirrup and set up the position, when the installation reinforcing bar, install reinforcing bar protective layer gasket between reinforcing bar and the first lining form 33 that corresponds, produce the phenomenon of exposing the muscle when avoiding concreting. The adjacent main ribs 341 are connected by a sleeve.

Further, as shown in fig. 16, two sides of the first structural steel bar 34 are provided with a portion partially disposed on the first lining form 33, the portion is used for forming a sidewall protruding at the hollowed-out portion, the sidewall has a multi-curvature shape, a structural rib and an open hoop are disposed at the portion, the open hoop surrounds the structural rib, and two ends of the steel bar at the opening of the open hoop extend into the stirrup 342.

As shown in fig. 17, after the first structural reinforcing bars 34 are bound, a reinforcing rib 343 and a reinforcing hoop 344 are additionally provided at the intersection node, the reinforcing rib 343 is provided on both sides of the intersection node, the reinforcing hoop 344 is hooped on the reinforcing rib 344 and the bound first structural reinforcing bars, and the strength of the intersection node is improved by the reinforcing rib 343 and the reinforcing hoop 344.

In one embodiment, when the first structural bars 34 are bound, as shown in fig. 19, the orientation rail 61 is laid along the arrangement region of the first structural bars 34, and the bottom of the orientation rail 61 is fixed to the bottom of the first bottom mold 31; the vibrating rod 62 is provided, a fixing ring 63 is provided on a side portion of the vibrating rod 62, and the fixing ring 63 of the vibrating rod 62 is fitted to the corresponding orientation rail 61, so that when the vibrating rod 61 is pulled up, the movement of the vibrating rod 61 is guided by the fixing ring 63 and the orientation rail 61. The directional track and the vibrating rod that set up are used for when the concrete of pouring first structure, vibrate in order to ensure closely knit to the concrete through vibrating rod 62.

When the orientation rail 61 is provided, the orientation rail 61 is provided at a position where the gap is large in the first structural reinforcing bars 34 to facilitate the subsequent movement of the vibrator rod 62. Specifically, the guiding rail 61 is a steel cable whose bottom end can be fixedly connected to the bottom of the first structural steel bar 34, and a hook can be further disposed at the bottom of the first bottom die 31 to hook the bottom end of the steel cable. The fixing ring 63 may be a nut having a diameter larger than the diameter of the guide rail 61, and the nut is welded and fixed to the vibrating rod 62.

Referring to fig. 18, before the first top mold is mounted, a double-sided tape is attached to the surface edge of the first lining mold 33, and the first top mold 32 is attached by the double-sided tape. The first lining die 33 is tightly attached to the first top die 32 through the double faced adhesive tape, so that the effects of connection and fixation and sealing are achieved, and the poured concrete is prevented from entering the surface of the first lining die 33. Preferably, the thickness of the double-sided adhesive tape is 1.5mm, so as to ensure that no gap is formed between the first lining mold 33 and the first top mold 32 when the first top mold is fastened.

Specifically, the first top mold 32 and the first bottom mold 31 are made of the same material. First top mode 32 is used for the final curved surface of first structure to look for the shape, this first top mode 32 adopts radial reinforcement flitch, the circular reinforcement fossil fragments of hoop and syllogic split bolt fastening, radial reinforcement flitch is unanimous with the thicknessing mode of radial shape flitch 46, the circular reinforcement fossil fragments of hoop and the circular secondary joist 45's of hoop material and processing method are unanimous, combine shown in fig. 18, radially consolidate the flitch along radially laying on fixed and first top mode 32 at the interval, adopt first top mode 32 of nail fixed connection and radial reinforcement flitch, locate radial reinforcement flitch with the circular reinforcement fossil fragments of hoop, utilize the syllogic split bolt to run through first top mode 32 and second die block 31, and then draw the circular reinforcement fossil fragments of hoop and the circular secondary joist 45 of hoop fastening. In order to ensure that the screw holes are arranged with vacuum after concrete is formed, the edges and corners of the concave holes are cleaned and smoothened, and the forming effect is poured out regularly, the three-section split bolts are arranged at the positions of the transverse spacing d/3 according to the cross section of the concrete batter post, d is the minimum cross section width of the batter post, the longitudinal spacing is 300mm, and the outer sides of the three-section split bolts are all sleeved with PVC sleeves.

The first top die 32 is constructed in a sectional installation mode, the concrete pouring of the oblique concrete grid structure also adopts a sectional pouring mode, according to the characteristics of the structure, the concrete is poured in 9 sections which are vertically divided, the construction joints are arranged at the bottom corners of each rhombic grid, the vertical construction joints are not reserved, and the concrete is poured into a whole in an annular mode. After installing one section first top mould 32, to pouring a section concrete between this first top mould 32 and the first die block 31, for the density degree that improves the concrete, when concreting, utilize the tamper 62 that sets up in advance to vibrate the concrete, this tamper 62 is at the in-process that vibrates, artifical pulling tamper 62 upwards moves along directional track 61, the top of concrete is pulled to the slow tamper 62 that will vibrate from the concrete bottom of pouring, ensure concrete compaction, tamper 62 draws down the top of concrete so that vibrate the concrete of follow-up pouring. The vibrating rod 62 can freely move in a narrow and small space with dense reinforcing steel bars through the arranged directional track 61, and the problem that the vibrating rod is difficult to insert in a reinforcing steel bar dense area subsequently is solved. And the directional track 61 that sets up can ensure to take out the tamper 62 for tamper 62 can effectual recycle, and can not take place the phenomenon that tamper 62 is difficult to take out in intensive reinforcing bar region.

For improving the dense effect of vibration, need set up 3 at least vibrating rods at each vertical unit lattice structure terminal surface, each vibrating rod all establishes on the directional track that corresponds through solid fixed ring cunning, and this directional track can lengthen at first structure reinforcing bar 34 ligature in-process to this directional track 61 can be along the top that the bottom of first die block 31 set up always. When setting up the vibrating rod, guarantee that the minimum distance between vibrating rod and the first lining mould 33 that corresponds is greater than 500mm, avoid crossing to shake and arouse that first lining mould produces great deformation.

Preferably, the segmental binding of the first structural steel bar 34 is performed simultaneously with the segmental casting of the first concrete, that is, firstly, one segment of the first structural steel bar 34 is bound, then the corresponding first top mold 32 is laid, one segment of concrete is cast correspondingly, and then the binding of the first structural steel bar 34 of the next segment, the installation of the first top mold 32 and the casting of the concrete are performed

In one embodiment, the formwork system further comprises an outer support frame supported on the first formwork structure, the outer support frame is supported on the bottom of the second formwork structure for providing support for the second formwork structure, and a part of the outer support frame passes through the first formwork structure and is fixedly connected with the support frame 20. The structure of this outer support frame body is the same with the structure of support frame body 20, and it is located on first formwork structure, utilizes first formwork structure to provide the support for second formwork structure, and this outer support frame body links into an organic whole with support frame body 20, can improve structural stability.

Preferably, the first lining die is provided with a through hole; the corresponding rod members on the outer support frame body pass through the through holes and are fixedly connected with the support frame body 20. Preferably, there are at least 6 uprights passing inside one first lining form 33. The support frame body and the outer support frame body are connected into a whole, so that the stability of the supporting structure can be improved.

In one embodiment, as shown in fig. 20 to 22, the second formwork structure includes a second bottom formwork 51, a second top formwork 52, and a second lining formwork 53 sandwiched between the second bottom formwork 51 and the second top formwork 52; the second top mold 52 is a multi-curvature glass fiber reinforced plastic mold, the shape of the multi-curvature glass fiber reinforced plastic mold is matched with the shape of the space between the second lining molds 53, and an arc-shaped reinforcing plate is embedded in the multi-curvature glass fiber reinforced plastic mold near the surface.

The second bottom mold 51 has the same structure and the same construction method as the first bottom mold 31, and the second lining mold 53 has the same manufacturing method and the same construction method as the first lining mold 33. The second structural steel bars 54 are bound on the second bottom die 51, and the installation method thereof is the same as that of the first structural steel bars, and specific reference may be made to the description of the construction part of the first bottom die structure, and details are not repeated here.

Similarly, in order to ensure that the concrete is poured densely on the other layer of the diagonal concrete grid structure 10b, when the second structural steel bars are bound, the directional track is laid along the arrangement area of the second structural steel bars, and the bottom of the directional track is fixed to the bottom of the second bottom die; providing a vibrating rod, arranging a fixing ring at the side part of the vibrating rod, and sleeving the fixing ring of the vibrating rod on a corresponding directional track, so that when the vibrating rod is lifted, the movement of the vibrating rod is guided through the fixing ring and the directional track; when the concrete of second structure is pour, vibrate in order to ensure closely knit to the concrete through the vibrating rod.

Specifically, the shape of the second top die 52 is adapted to the shape of the space between the adjacent second lining dies 53, the processing technology of the second top die 52 is the same as that of the second lining die and the first lining die, the thickness of the whole glass fiber reinforced plastic of the second top die 52 is 10mm, the four peripheral edges of the second top die are partially overlapped on the second lining dies 53, and the overlapped length is 250 mm. The outer surface of the second top die 52 is embedded with an arc-shaped steel plate of 80mm multiplied by 3mm as a back edge, and regular woodwork bolt holes are arranged along the peripheral 200mm position as temporary fixing point positions with the second lining die. When the second top die 52 is installed, the circular reinforcing keel and the three-section split bolt are arranged at the outer side at even intervals of 300mm and are used as double-layer die plate reinforcing. The concrete pouring construction method of the diagonal concrete lattice structure 10b is the same as the concrete construction method of the diagonal concrete lattice structure 10a, that is, the segmental construction. The second top mold 52 also adopts a sectional construction method. In order to ensure the quality of the construction joint of the concrete structure poured up and down, the bottom of the second top form 52 is provided with an extension reinforcing plate downwards, and the extension reinforcing plate is attached to the corresponding second top form and the second lining form, so that the concrete forming quality of the construction joint is improved.

The invention also provides a construction method of the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system, and the construction method is explained below.

As shown in fig. 23, the construction method of the cast-in-place multi-curved surface double-layer diagonal concrete grid structure formwork system of the invention comprises the following steps:

step S101 is executed, a support frame body is erected at the position of a double-layer diagonal concrete grid structure to be formed, and a support curved surface which is adaptive to the inner surface of the double-layer diagonal concrete grid structure to be formed is formed on the top surface of the erected support frame body; then, step S102 is executed;

step S102 is executed, a first supporting structure is constructed on the supporting curved surface, and a layer of oblique concrete grid structure is formed by pouring through the first supporting structure; then, step S103 is executed;

and S103, constructing a second formwork structure on the first formwork structure, and pouring by using the second formwork structure to form another layer of oblique concrete grid structure.

In a specific embodiment, before constructing the second formwork structure, the method further comprises: and erecting an outer support frame body on the first formwork structure, enabling a part of the outer support frame body to penetrate through the first formwork structure and be fixedly connected with the support frame body, and utilizing the outer support frame body to support the second formwork structure.

In a specific embodiment, before constructing the first formwork structure, the method further comprises the following steps: providing a radial multi-curvature keel, wherein the radial multi-curvature keel is matched with the curvature of the inner surface of a to-be-formed double-layer oblique concrete grid structure, and fixing the radial multi-curvature keel on the supporting curved surface; the circular secondary joist of hoop is provided, the circular secondary joist of hoop and the camber looks adaptation of the double-deck oblique crossing concrete grid structure internal surface of treating to form will the circular secondary joist of hoop is arranged in on the radial many curvatures fossil fragments and with radial many curvatures fossil fragments are connected fixedly, utilize the circular secondary joist of hoop supports first formwork structure.

In a specific embodiment, the method further comprises the following steps: and providing an oblique back stay bar, vertically jacking the oblique back stay bar at the bottom of the radial multi-curvature keel, and fixedly connecting the oblique back stay bar with the support frame body.

In a specific embodiment, when the second formwork structure is constructed, the second top formwork of the second formwork structure adopts a multi-curvature glass reinforced plastic formwork, and when the multi-curvature glass reinforced plastic formwork is manufactured, an arc reinforcing plate is embedded in the multi-curvature glass reinforced plastic formwork close to the surface.

The invention is used for solving the problem that the existing scaffold supporting system is rectangular and square, and the multi-curvature modeling design of a spherical shell structure is difficult to realize; the method is also used for solving the problems of large difficulty, high hoisting difficulty, low installation effect and difficulty in turnover use of the common wooden template assembly form-finding and stereotyped steel template; and the method is also used for solving the problem that the multidirectional crossed concrete of the molding longitudinal ribs in the department of narrow and small departments is difficult to vibrate and compact. The special-shaped space multi-curvature hollow oblique crossing concrete lattice structure is suitable for construction of special-shaped multi-curvature hollow oblique crossing concrete lattice structures, a special-shaped scaffold supporting system is designed, a special connecting structure is added, and special-shaped space multi-curvature concrete form finding and construction are achieved. The utility model provides a construction technology of dysmorphism hollow out construction through double-deck template opposite drawing, moulds plastics the lining mould at dysmorphism fretwork position according to the customization dysmorphism, demolishs after waiting concrete placement, realizes the special-shaped hollow out construction structure of diagonal grid body, through pre-buried concrete multiple spot promotion vibrator for the vibrating rod can directional promotion vibrate under the intensive condition of concrete variable cross-section change and reinforcing bar interval, ensures that concrete vibrates closely knit in the narrow and small space.

The formwork system of the large-scale diagonal grid cast-in-place concrete structure is realized by adopting conventional common materials in the design and construction of the supporting system, the form-finding system and the formwork system through a simple processing method and a construction method, and the optimization and innovation are carried out on the reinforcement bar binding and concrete pouring construction processes, so that the integral construction technology of the complex multi-curved surface special-shaped diagonal concrete grid structure is formed, the construction period is greatly shortened, the construction cost is effectively reduced, the construction quality is extremely improved, and the popularization and application values are extremely high.

While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.