阅读说明：本技术 一种全预制排钢管混凝土剪力墙及建筑结构体系 (Full-prefabricated steel tube concrete shear wall and building structure system ) 是由 王东方 刘明辉 刘冶 刘小荣 杨涛 曾庆华 于 2020-12-25 设计创作，主要内容包括：本发明涉及一种全预制排钢管混凝土剪力墙及建筑结构体系,剪力墙包括水平分布钢筋、竖向分布钢筋、钢管、水平缀板以及预制混凝土,水平分布钢筋与竖向分布钢筋构成墙体的钢筋骨架；钢管沿墙体的长度方向成排地竖向设置在钢筋骨架内；水平缀板为竖向分布式水平缀板,水平缀板两端分别与两侧钢管焊接固定；钢筋骨架、钢管以及水平缀板在工厂内组装成型,钢筋骨架和钢管内预先浇筑混凝土。本发明的剪力墙除了可以充分发挥钢材和混凝土组合之后承载力高、刚度大、抗震性能好、防腐防火性能优异的优点之外,还具备可以形成各种形状的墙柱、使用位置灵活、结构构件轻、运输便利、现场施工方便等优点。(The invention relates to a full-prefabricated steel tube concrete shear wall and a building structure system, wherein the shear wall comprises horizontally distributed steel bars, vertically distributed steel bars, steel tubes, horizontal batten plates and prefabricated concrete, and the horizontally distributed steel bars and the vertically distributed steel bars form a steel bar framework of the wall; the steel pipes are vertically arranged in the steel reinforcement framework in rows along the length direction of the wall body; the horizontal batten plate is a vertical distributed horizontal batten plate, and two ends of the horizontal batten plate are respectively welded and fixed with the steel pipes on two sides; the steel bar framework, the steel pipes and the horizontal batten plates are assembled and formed in a factory, and concrete is poured in the steel bar framework and the steel pipes in advance. The shear wall disclosed by the invention not only can fully exert the advantages of high bearing capacity, high rigidity, good anti-seismic performance and excellent anti-corrosion and fireproof performance after the combination of steel and concrete, but also has the advantages of capability of forming wall columns in various shapes, flexibility in use position, light structural members, convenience in transportation, convenience in field construction and the like.)

1. The utility model provides a full precast row steel pipe concrete shear force wall which characterized in that: is formed by prefabricating horizontally distributed steel bars, vertically distributed steel bars, steel pipes, horizontal batten plates and concrete,

the horizontally distributed reinforcing steel bars and the vertically distributed reinforcing steel bars form a reinforcing steel bar framework of the wall body;

the steel pipes are vertically arranged in the steel reinforcement framework in rows along the length direction of the wall body, and the steel pipes are welded and fixed with the horizontally distributed steel bars;

the horizontal batten plates are vertically distributed horizontal batten plates, a plurality of rows are vertically arranged between two adjacent steel pipes, and two ends of each horizontal batten plate are respectively welded and fixed with the steel pipes on two sides;

the steel bar framework, the steel pipes and the horizontal batten plates are assembled and molded in a factory, and concrete is poured in the steel bar framework and the steel pipes in advance; and is

The shear wall is provided with a vertical prefabricated connecting end and/or a horizontal prefabricated connecting end, the upper shear wall and the lower shear wall are vertically connected through the vertical prefabricated connecting end, post-cast strip concrete is poured in a horizontal joint, the left shear wall and the right shear wall are horizontally connected through the horizontal prefabricated connecting end, and the post-cast strip concrete is poured in the vertical joint.

2. The shear wall of claim 1, wherein:

the vertical prefabricated connecting end is as follows: the lower end of the steel pipe is closed, the closed end is processed to form a convex plug, the upper end of the steel pipe is open, the open end is processed to form a concave slot, concrete is not poured in the concave slot, the bottom surface of the concave slot is a concrete surface, and the convex plug of the upper steel pipe is inserted into the concave slot of the lower steel pipe and is welded and fixed at the connecting surface.

3. The shear wall of claim 2, wherein:

the concave slot of the lower steel pipe is filled with grouting material in advance, first gaps are formed between the periphery of the convex plug and the wall of the concave slot and between the lower part of the convex plug and the concrete surface in the state that the convex plug of the upper steel pipe is inserted into the concave slot of the lower steel pipe, and the grouting material is filled in the first gaps to form a grout blanket.

4. The shear wall of claim 3, wherein:

the convex plug protrudes downwards by 50-60mm from the connecting surface, and the first gap is 20-30 mm.

5. The shear wall of claim 3, wherein:

and a capping steel plate is welded and fixed at the bottom of the concave slot, a through hole is formed in the capping steel plate, a second gap is formed between the capping steel plate and the concrete surface, and the grouting material in the concave slot is poured into the second gap through the through hole.

6. The shear wall of claim 2, wherein:

the upper end and the lower end of the steel pipe are provided with pipe wall local thickening layers within a certain length range from the connecting surface, and the pipe wall local thickening layers are welded and fixed on the inner wall of the steel pipe through perforated plug welding.

7. The shear wall of claim 2, wherein:

the outer wall of the steel pipe at the connecting surface of the upper end of the steel pipe is connected with an annular base plate in a welding mode, and the annular base plate is connected with the upper steel pipe in a welding mode when the upper steel pipe and the lower steel pipe are fixedly welded at the connecting surface.

8. The shear wall of claim 1, wherein:

the transverse prefabricated connecting end is as follows: the horizontal distributed steel bars of the shear wall extend out to form a U-shaped hoop, the horizontal batten plates extend out to a certain length, the U-shaped hoops extending out of the left shear wall and the right shear wall are overlapped and butted, a steel pipe is inserted into a butt joint area of the U-shaped hoops, concrete is poured into the steel pipe in advance, and the horizontal batten plates extending out of the left shear wall and the right shear wall are fixedly connected with the steel pipe in the butt joint area in a welding mode.

9. The shear wall of claim 1, wherein:

the steel pipe is a round steel pipe;

preferably, the thickness of the shear wall is 180-200 mm;

preferably, the shear wall is in a shape of a straight line, an L shape, a T shape, a cross shape, a U shape, a Z shape or a C shape, and vertical concrete pouring holes are reserved in the wall.

10. An assembled row steel tube concrete shear wall building structure system, characterized by being formed by assembling shear walls, beams and floor slabs, wherein the shear walls are the shear walls according to any one of claims 1 to 9, the beams are steel beams or reinforced concrete beams, the floor slabs are precast slabs, and,

the connection mode of the shear wall and the steel beam is as follows: the shear wall is connected with the steel beam in the same direction by adopting rigid connection nodes, and is connected with the steel beam in the vertical direction by adopting hinged nodes;

the connection mode of the shear wall and the reinforced concrete beam is as follows: welding a section of I-shaped steel on the reinforcing steel bar at the end part of the reinforced concrete beam, and connecting the shear wall and the I-shaped steel according to the connection mode with the steel beam;

the connection mode of the shear wall and the floor slab is as follows: the upper and lower ribs of the floor slab penetrate through the gaps between the steel pipes to be connected with each other.

Technical Field

The invention relates to the technical field of building structures, in particular to an assembled structure, and specifically relates to a full-prefabricated steel tube concrete shear wall and a building structure system.

Background

In the current domestic buildings, the reinforced concrete shear wall is widely applied and mainly applied to a shear wall system, a frame-core tube structure system, a tube-in-tube structure system and the like; in steel structures, steel plate shear walls, steel plate composite shear walls, square steel tube bundle shear walls and the like are also applied to a certain extent.

The prior art has the following defects:

1) the cast-in-place reinforced concrete shear wall belongs to a traditional production mode, has high resource and energy consumption, great environmental pollution, intensive labor force and lower production efficiency;

2) the prefabricated reinforced concrete shear wall belongs to an industrial production mode, but has high manufacturing cost, complex connection structure, difficult control of connection node engineering quality, low bearing capacity, poor ductility and large self weight of components, thus causing inconvenience in transportation, hoisting and installation;

3) the reinforced concrete shear wall has the advantages of large dead weight, general anti-seismic performance, slow construction speed and certain influence on building space and quality due to larger section size of a member.

4) The steel plate shear wall has the advantages of large steel quantity, higher manufacturing cost, common corrosion resistance and fire resistance, poorer comfort level and common adaptability with a filler wall, so the application of the steel plate shear wall is greatly limited.

5) The steel quantity of the square steel pipes in the steel pipe bundle shear wall is large, and the manufacturing cost is high.

6) The steel plate in the steel plate composite shear wall has weaker restriction on concrete, large steel consumption, high manufacturing cost, complex structure, large construction difficulty and long construction period.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a full precast concrete filled steel tube shear wall and a building structure system, so as to partially or completely solve the defects of the prior art.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the invention firstly provides a full-prefabricated steel tube concrete shear wall which is formed by prefabricating horizontally distributed steel bars, vertically distributed steel bars, steel tubes, horizontal batten plates and concrete,

the horizontally distributed reinforcing steel bars and the vertically distributed reinforcing steel bars form a reinforcing steel bar framework of the wall body;

the steel pipes are vertically arranged in the steel reinforcement framework in rows along the length direction of the wall body, and the steel pipes are welded and fixed with the horizontally distributed steel bars;

the horizontal batten plates are vertically distributed horizontal batten plates, a plurality of rows are vertically arranged between two adjacent steel pipes, and two ends of each horizontal batten plate are respectively welded and fixed with the steel pipes on two sides;

the steel bar framework, the steel pipes and the horizontal batten plates are assembled and molded in a factory, and concrete is poured in the steel bar framework and the steel pipes in advance; and is

The shear wall is provided with a vertical prefabricated connecting end and/or a horizontal prefabricated connecting end, the upper shear wall and the lower shear wall are vertically connected through the vertical prefabricated connecting end, post-cast strip concrete is poured in a horizontal joint, the left shear wall and the right shear wall are horizontally connected through the horizontal prefabricated connecting end, and the post-cast strip concrete is poured in the vertical joint.

In one embodiment, the vertical prefabricated connecting end is: the lower end of the steel pipe is closed, the closed end is processed to form a convex plug, the upper end of the steel pipe is open, the open end is processed to form a concave slot, concrete is not poured in the concave slot, the bottom surface of the concave slot is a concrete surface, and the convex plug of the upper steel pipe is inserted into the concave slot of the lower steel pipe and is welded and fixed at the connecting surface.

In one embodiment, the concave slot of the lower steel pipe is filled with grouting material in advance, and under the condition that the convex plug of the upper steel pipe is inserted into the concave slot of the lower steel pipe, first gaps are formed between the periphery of the convex plug and the wall of the concave slot and between the lower part of the convex plug and the concrete surface, and the grouting material is filled in the first gaps to form a bedding layer.

In one embodiment, the male plug projects 50-60mm downward from the connecting surface, and the first gap is 20-30 mm.

In one embodiment, a capping steel plate is welded and fixed at the bottom of the concave slot, the capping steel plate is provided with a through hole, a second gap is formed between the capping steel plate and the concrete surface, and the grouting material in the concave slot is poured into the second gap through the through hole.

In a specific embodiment, the upper end and the lower end of the steel pipe are provided with pipe wall local thickening layers within a certain length range from the connecting surface, and the pipe wall local thickening layers are fixed on the inner wall of the steel pipe through perforation plug welding.

In one embodiment, the upper end of the steel pipe, the outer wall of the steel pipe at the connecting surface is welded and connected with an annular base plate, and the annular base plate is welded and connected with the upper steel pipe when the upper and lower steel pipes are welded and fixed at the connecting surface.

In one embodiment, the transverse preformed connecting ends are: the horizontal distributed steel bars of the shear wall extend out to form a U-shaped hoop, the horizontal batten plates extend out to a certain length, the U-shaped hoops extending out of the left shear wall and the right shear wall are overlapped and butted, a steel pipe is inserted into a butt joint area of the U-shaped hoops, concrete is poured into the steel pipe in advance, and the horizontal batten plates extending out of the left shear wall and the right shear wall are fixedly connected with the steel pipe in the butt joint area in a welding mode.

In one embodiment, the steel pipe is a round steel pipe;

preferably, the thickness of the shear wall is 180-200 mm;

preferably, the shear wall is in a shape of a straight line, an L shape, a T shape, a cross shape, a U shape, a Z shape or a C shape, and vertical concrete pouring holes are reserved in the wall.

The invention further provides an assembly type steel tube concrete shear wall building structure system which is formed by assembling the shear wall, the beam and the floor slab, wherein the shear wall is the shear wall, the beam is a steel beam or a reinforced concrete beam, the floor slab is a precast slab, and,

the connection mode of the shear wall and the steel beam is as follows: the shear wall is connected with the steel beam in the same direction by adopting rigid connection nodes, and is connected with the steel beam in the vertical direction by adopting hinged nodes;

the connection mode of the shear wall and the reinforced concrete beam is as follows: welding a section of I-shaped steel on the reinforcing steel bar at the end part of the reinforced concrete beam, and connecting the shear wall and the I-shaped steel according to the connection mode with the steel beam;

the connection mode of the shear wall and the floor slab is as follows: the upper and lower ribs of the floor slab penetrate through the gaps between the steel pipes to be connected with each other.

Compared with the prior art, the invention has the beneficial effects that: the fully-prefabricated steel tube concrete shear wall has the advantages of high bearing capacity, high rigidity, good anti-seismic performance and excellent anti-corrosion and fireproof performance after steel and concrete are combined, and also has the advantages of capability of forming wall columns in various shapes, flexible use position, light structural members, convenience in transportation, convenience in site construction and the like. The defects that the assembled reinforced concrete column wall body is poor in anti-seismic performance, the steel plate shear wall is high in manufacturing cost and poor in comfort level, the steel plate composite shear wall is complex in structure, difficult to construct and the like are overcome. Specifically, the invention has at least one or more of the following practical effects:

(1) the fully-prefabricated steel tube concrete shear wall is manufactured in a factory, can be produced by adopting an industrial production line, and is automatically operated by a robot in the whole process. The structure does not need to be configured with reinforcing steel bars on site, only horizontal cast-in-place belts and edge member cast-in-place belts need to be poured on site, and the construction speed is high. The structure component is portable, and is convenient to transport, hoist and mount. The fully-prefabricated row steel tube concrete shear wall can vertically span one or more layers when being manufactured in a factory, can be connected once according to 2.5 or more layers of hoisting capacity during field assembly, greatly reduces the field connection workload, has the construction speed comparable to that of a steel structure, greatly shortens the construction period and improves the production efficiency.

(2) The steel pipes are arranged in the concrete wall body, so that the bearing capacity of the structure can be greatly improved, and the ductility of the structure can be increased; the concrete outside the steel pipe provides restraint for the steel pipe, and the local stability of the steel pipe is ensured; the concrete is poured into the steel pipe, and the steel pipe and the concrete, especially the high-strength concrete, can play the effect which is several times as much as that of the common concrete, can greatly reduce the number of the concrete shear walls, reduce the concrete consumption of the wall body assembly, can save more than 50% of the concrete of the wall body, and meet the national policy requirements on green and environment-friendly construction.

(3) The diameter of the vertical steel bar (D8-D10) is reduced by increasing the steel quantity of the steel pipe, and the steel bar is controlled to be the minimum reinforcement ratio. The reserved horizontal concrete cast-in-place strip only needs 200 plus 400mm in height, and the steel bars can be lapped, so that the defect of difficulty in connecting the steel bars of the traditional reinforced concrete shear wall is overcome.

(4) The high-strength concrete is poured in a factory, the quality can be guaranteed, and the high-strength concrete is connected through upper and lower nodes on site and has high tolerance to errors; the upper and lower connecting end structures are simple, convenient to construct and easy to butt joint on site; the end head is specially treated, so that the local strength is high, and the problem of concrete shrinkage in the steel pipe can be effectively solved while the local connection strength is improved; the joint adopts the combination of multiple connected mode, and joint strength is high, firm in connection.

(5) Horizontal batten plates are arranged among the steel pipes and connected together through the horizontal batten plates, the horizontal batten plates and the steel pipes form a strong column and weak beam structure, and energy can be effectively consumed under the action of extreme seismic loads;

the vertical distance between the horizontal batten plates is 20-100cm, the width, the thickness and the distance between the horizontal batten plates are determined according to calculation, and the horizontal batten plates and the horizontally distributed steel bars are arranged at intervals, so that the integral deformation of the steel pipe can be coordinated, and the concrete cracking under extreme earthquakes can be prevented.

(6) The horizontally distributed steel bars and the vertically distributed steel bars are welded into the steel bar net piece and tightly attached to the outer side of the steel pipe, the steel bar net piece is connected with the steel pipe in a spot welding mode, the steel bar net piece plays a role in outer steel pipe stud, the number of steel pipe studs is reduced, and the studs do not need to be additionally arranged.

(7) When the circular steel tube is adopted, the requirement of the circular steel tube concrete on the thickness of a concrete protective layer is low, generally only 3-4CM is needed, and the common 180-wall 200-thick concrete shear wall in China is easy to implement.

(8) The row of steel tube concrete can be connected through horizontal batten plates to form wall column units in a straight line shape, an L shape, a T shape, a cross shape, a U shape, a Z shape, a C shape and the like, and the units can be mutually combined to form a special-shaped column frame structure system or a shear wall system; the units and the frame columns are mutually matched and connected to form a frame-shear wall system and a frame-core tube structure system; the unit may also be connected to a support to form a frame-support structure system.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, shall fall within the scope covered by the technical contents disclosed in the present invention.

FIG. 1 is a schematic diagram illustrating the composition of a full precast concrete filled steel tube shear wall according to an embodiment;

fig. 2(a) is a schematic diagram of a steel pipe concrete structure, (B) is an enlarged schematic diagram of a region a of (a), (c) is a schematic diagram of a top view of (B) (concrete is not shown), (d) is an enlarged schematic diagram of a region B of (a), (e) is a schematic diagram of a top view of (d) (concrete is not shown);

FIG. 3(a) is a schematic diagram before butt joint of vertical prefabricated connecting ends, (b) is a schematic diagram after butt joint, (C) is a schematic diagram of a grout blanket, and (d) is an enlarged schematic diagram of a zone C of (C);

FIG. 4 is a schematic vertical view of a horizontal joint of a prefabricated wall;

FIG. 5(a) is a schematic view before butt-joint of the transverse prefabricated connecting end, and (b) is a schematic view after butt-joint;

FIG. 6 is a schematic vertical view of a vertical joint of a prefabricated wall;

FIGS. 7(a) - (h) are schematic cross-sectional views of different forms of shear wall;

FIG. 8 is a schematic plan view of an embodiment of a prefabricated building structure system.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are described in further detail below with reference to the embodiments and the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

It is to be understood that the terms "comprises/comprising," "consisting of … …," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, apparatus, process, or method if desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," or "comprising" does not exclude the presence of other like elements in a product, device, process, or method that comprises the element.

It will be further understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present invention and to simplify description, and do not indicate or imply that the referenced device, component, or structure must have a particular orientation, be constructed in a particular orientation, or be operated in a particular manner, and should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The technical solution of the present invention is specifically explained below with reference to the accompanying drawings.

The invention firstly provides a full-prefabricated row steel tube concrete shear wall, which will be explained below by taking a round steel tube as an example and combining with the accompanying drawings, but those skilled in the art can know that the technical scheme of the invention is also applicable to other forms of steel tubes, such as square steel tubes.

Referring to fig. 1, fig. 1 is a schematic view of a fully prefabricated concrete-filled steel tube shear wall assembly, and the shear wall 100 includes horizontally distributed steel bars 1, vertically distributed steel bars 2, steel tubes 3, horizontal batten plates 4, and prefabricated concrete, wherein,

the horizontally distributed steel bars 1 and the vertically distributed steel bars 2 form a steel bar framework of the wall body, concrete is poured in the steel bar framework and the steel pipe in advance, common concrete 6 is poured in the steel bar framework in advance, and the steel bar framework and the precast concrete act together to bear the main body supporting strength and rigidity of the whole shear wall.

And tie bars 5 are arranged between the vertically distributed steel bars 2 on the two sides of the wall body to enhance the integrity of the steel bar framework.

As for the above-mentioned steel reinforcement cage, it is a general and basic member in a reinforced concrete structure for those skilled in the art, and this is not particularly limited and illustrated in the present invention.

The steel tubes 3 are vertically arranged in the steel reinforcement framework, the steel tubes 3 are arranged in a row along the length direction of the wall body, and the high-strength concrete 7 is poured in the steel tubes 3 in advance. The steel pipes are arranged in the concrete wall body, so that the bearing capacity of the structure can be greatly improved, and the ductility of the structure can be increased; the concrete outside the steel pipe provides restraint for the steel pipe, and the local stability of the steel pipe is guaranteed. Pouring high-strength concrete into the steel pipe, with the steel pipe combined action, for ordinary concrete, high-strength concrete can play the effect that the several times is ordinary concrete, when building fabricated building structure system, can the greatly reduced concrete shear force wall quantity, reduce wall body total concrete quantity, can practice thrift wall body concrete more than 50%, when vertical load control, can practice thrift the concrete quantity more than 60%, accord with the national policy requirement to building green.

In addition, for the existing 200-thick shear wall in China, the diameter of a steel pipe is small, concrete inside the steel pipe is generally cast in place, but the cast in place has the defect that the construction quality of high-strength concrete is not guaranteed, particularly small-diameter steel pipes. The invention completes the concrete pouring in the steel tube in advance in a factory, and the construction quality is easy to control.

The steel pipe 3 is fixedly connected with the horizontally distributed steel bars 1 in a welding mode. Because horizontal distribution reinforcing bar 1 welds into the reinforcing bar net piece with vertical distribution reinforcing bar 2, hugs closely in the 3 outsides of steel pipe, and the reinforcing bar net piece is connected with 3 spot welding of steel pipe, and the reinforcing bar net piece plays the outer pintle effect of steel pipe, reduces steel pipe pintle quantity, need not add and establishes the pintle, and spot welding quantity should satisfy the pintle and arrange the requirement.

Referring to fig. 1-2, the horizontal batten plate 4 is a vertical distributed horizontal batten plate, a plurality of rows are vertically arranged between two adjacent steel pipes, and two ends of the horizontal batten plate are respectively welded and fixed with the steel pipes on two sides. Compared with other steel concrete structures, the steel pipes 3 are provided with the vertically distributed horizontal batten plates 4, the steel pipes are connected together through the horizontal batten plates, the horizontal batten plates and the steel pipes form a strong column and weak beam structure, energy can be effectively consumed under the action of extreme earthquake load, the anti-seismic performance is good, the horizontal batten plates serve as weak connecting pieces, and the steel pipes and concrete are easy to cooperatively bear force. The concrete has good integrity, and cannot be cracked into concrete blocks with complex stress by the connecting piece and the steel pipe, thereby realizing a real combined structure.

The vertical distance between the horizontal batten plates 4 is 20-100cm, the horizontal batten plates and the horizontally distributed steel bars 1 are arranged at intervals in the vertical direction, the width, the thickness and the distance of the horizontal batten plates are determined according to calculation, the integral deformation of steel pipes can be coordinated, and concrete cracking under extreme earthquakes is prevented.

The horizontally distributed steel bars 1, the vertically distributed steel bars 2, the tie bars 5, the steel pipes 3 and the horizontal batten plates 4 are assembled and molded in a factory, and the steel bar framework concrete and the concrete in the steel pipes are poured in advance by the factory. All the components are prefabricated in a whole factory, an industrial production line can be adopted for production, and the whole process is automatically operated by a robot. The steel bars do not need to be configured on site, only the horizontal cast-in-place strip and the edge component cast-in-place strip need to be poured on site, and the construction speed is high. The structure component is portable, and is convenient to transport, hoist and mount. One or more layers can be spanned vertically during factory manufacture, 2.5 layers or even more layers can be connected once according to hoisting capacity during field assembly, the field connection workload is greatly reduced, the construction speed of a steel structure can be comparable to that of a steel structure, the construction period can be greatly shortened, and the production efficiency is improved.

In addition, the shear wall is provided with a vertical prefabricated connecting end and/or a horizontal prefabricated connecting end, the upper shear wall and the lower shear wall are vertically connected through the vertical prefabricated connecting end, post-cast strip concrete is poured in a horizontal joint, the left shear wall and the right shear wall are horizontally connected through the horizontal prefabricated connecting end, and the post-cast strip concrete is poured in the vertical joint. The connecting end of the shear wall is also a node connecting structure specially designed for all prefabricated components, is processed and finished when the shear wall body is manufactured in a factory, and is convenient for realizing node butt joint quickly and accurately during field assembly.

The prefabricated connecting end of the present invention is described in detail below.

Referring to fig. 2-3, the vertical prefabricated connecting end is: the lower end of the steel pipe 3 is closed, the closed end is processed to form a convex plug 31, the upper end of the steel pipe 3 is open, the open end is processed to form a concave slot 32, concrete is not poured in the concave slot 32, the bottom surface of the concave slot is a concrete surface, and the convex plug of the upper steel pipe is inserted into the concave slot of the lower steel pipe and is welded and fixed at the connecting surface. The socket-matched notch connection mode of the plug and the slot has the advantages of simple structure, easy field butt joint and high tolerance to errors.

The invention aims at the fully prefabricated structure, and designs the convex plug 31 with the closed bottom, so that the bottom of the steel pipe can be closed while the splicing end is formed, and conditions are provided for the member to pour high-strength concrete in advance in a factory.

There can be certain error when the upper and lower steel pipe of conventionality is connected, and there is not uniform thickness clearance in the junction, has the space between the upper and lower steel pipe after the welding, leads to vertical pressure to be difficult to effective transmission. In addition, after the lower steel pipe is poured with concrete, the concrete shrinkage may cause the concrete at the upper end in the steel pipe to be not full, the concrete surface is not flat, and the construction defects exist. In order to solve this problem, referring to fig. 2-3, the width of the convex portion of the male plug 31 of the present invention is smaller than the inner diameter of the steel pipe, the length of the convex portion is smaller than the depth of the concave slot 32, the concave slot of the lower steel pipe is filled with grouting material 39 in advance, under the condition that the male plug 31 of the upper steel pipe 3 is inserted into the concave slot 32 of the lower steel pipe 3, a first gap 38 is provided between the periphery of the male plug 31 and the wall of the concave slot 32, and between the lower portion of the male plug 31 and the surface of the high-strength concrete 7, as shown in fig. 3(b), the first gap 38 forms a receiving cavity, and the grouting material 39 fills the receiving cavity to form a bedding layer. The grouting material is high-strength grouting material, and the strength of the grouting material is generally higher than that of high-strength concrete in the steel pipe. The grouting material can guarantee that concrete is full and closely knit in the steel pipe, ensures concrete-filled steel pipe construction quality and bearing capacity, can strengthen the joint strength of upper and lower end again, ensures that vertical pressure effectively transmits.

Preferably, referring to fig. 2(d) and (e), the bottom of the concave slot 32 is welded and fixed with a capping steel plate 40, the shape of the capping steel plate 40 is consistent with the cross section of the steel pipe 3, the size of the capping steel plate is matched with the inner diameter of the steel pipe, the edge of the capping steel plate is welded and fixed with the inner wall of the steel pipe or welded and fixed with a local thickening layer of the pipe wall, the center of the capping steel plate 40 is provided with a through hole 41, the size of the through hole 41 is determined according to actual conditions, and 1/4 of the diameter of the capping steel plate 40 is adopted in the invention. The capping steel plate 40 is spaced apart from the concrete surface of the steel pipe 3 by a second gap 42, and when the concave slot 32 of the lower steel pipe 3 is filled with the grout 39 in advance, the grout 39 is poured into the second gap 42 through the through hole 41 and fills the second gap 42. By arranging the capping steel plate, the capability of the upper end and the lower end for transmitting vertical pressure is improved, and the design target of a strong node is favorably realized; the grouting material is communicated and bonded with the concrete surface, so that gaps caused by concrete shrinkage can be effectively compensated, and the phenomenon of node force transfer mutation is avoided.

The male plug 31 and the corresponding first gap are arranged too small, the function of the grout blanket is limited, and even the function is difficult to play, and the male plug 31 and the corresponding first gap are arranged too large, so that the female slot 32 is correspondingly required to be arranged too deep, and the strength of the thickening layer at the node is difficult to guarantee. Preferably, the convex plug 31 of the present invention protrudes downward 50-60mm from the connecting surface 33, and the first gap between the periphery of the convex plug 31 and the wall of the concave slot 32, and between the lower portion of the convex plug 31 and the surface of the high strength concrete 7 is 20-30 mm.

The size of the second gap is determined according to the actual condition, and the second gap is smaller in the invention, is mainly determined according to the shrinkage condition of the concrete surface in the steel pipe, and generally does not exceed 5 mm.

As a specific improvement, referring to FIGS. 2-3, a pipe wall local thickening layer 34 is arranged in a certain length range from the upper end of the steel pipe 3 to the connecting surface 33, and similarly, a pipe wall local thickening layer 34 is also arranged in a certain length range from the lower end of the steel pipe 3 to the connecting surface 33, the pipe wall local thickening layer can be adhered to the inner wall of the steel pipe by a steel pipe section with a slightly smaller pipe diameter, and the pipe wall local thickening layer is welded and fixed with the steel pipe by a perforation plug welding 35 in a factory. The length and the wall thickness of the steel pipe section are determined by calculation according to the stress of the steel pipe concrete at the connecting node, the length of the thickening layer is generally not less than 30cm, and the thickness of the thickening layer is not less than 6 mm. The joint node is reinforced, so that the stress concentration problem of the joint is solved, the continuous and reliable transmission of force flow is ensured, the anti-seismic concept of strong node and weak member is met, and the safety and reliability of the structure are ensured.

As a specific improvement, referring to FIGS. 2-3 again, the upper end of the steel pipe 3 of the present invention is welded with an annular backing plate 36 on the outer wall of the steel pipe at the joint surface 33, the annular backing plate 36 is welded with the upper steel pipe 3 when the upper and lower steel pipes are welded and fixed at the joint surface, and the present invention adopts full penetration welding 37. The width of the annular base plate is generally 20-40mm, the thickness of the annular base plate is 6-8mm, the annular base plate can meet the requirements of a welding process, meanwhile, the reinforcing effect is achieved on weak positions of joints, the reinforcing effect is achieved on adverse factors such as uneven stress caused by welding, the construction quality can be effectively improved, and the structure is guaranteed to be safe and reliable.

Continuing to refer to fig. 4, when the upper and lower shear walls 10, 11 are butted, the vertically distributed steel bars 2 are overlapped, the convex plug 31 of the upper steel pipe 3 is inserted into the concave slot 32 of the lower steel pipe 3, the upper and lower steel pipes are welded and fixed at the joint face 33, and concrete is poured into the horizontal joint through the concrete pouring hole 9 to form the horizontal joint concrete post-cast strip 12.

According to the invention, the vertical concrete pouring hole 9 is reserved in the shear wall, and the concrete pouring hole 9 is used for pouring post-pouring belt concrete when the upper and lower shear walls are assembled, and can also reduce the self weight of the assembled member.

The connecting end disclosed by the invention is uniquely designed, the local strength is high, the connecting position is combined by adopting a plurality of connecting modes, the connecting strength is high, and the connection is firm.

Referring again to fig. 5, fig. 5 discloses a transverse prefabricated connecting end according to an embodiment of the present invention, specifically:

as shown in fig. 5(a), the horizontally distributed steel bars 1 of the shear wall extend out of the precast concrete for a certain length to form a U-shaped hoop 8, meanwhile, the horizontal gusset plate 4 extends out of the precast concrete for a certain length, when the left and right shear walls are assembled, the U-shaped hoops 8 extending out of the left and right shear walls are overlapped and butted up and down, as shown in fig. 6, a steel tube 3 is inserted into the butt-joint area of the U-shaped hoops, high-strength concrete 7 is poured in the steel tube in advance, the horizontal gusset plates 4 extending out of the left and right shear walls are welded and fixed with the steel tube 3 in the butt-joint area, as shown in fig. 5(b), the transverse connection node adopts the same structural form as the shear wall, and has high node connection strength, good shear bearing capacity, good stability and simple and convenient construction.

Continuing to refer to fig. 6, the U-shaped hoops 8 extending from the two sides of the left and right shear walls 13 and 14 are overlapped and butted up and down, a steel pipe 3 is inserted into the butt-joint area of the U-shaped hoops, high-strength concrete 7 is poured in the steel pipe in advance, the horizontal batten plates 4 extending from the left and right shear walls 13 and 14 are welded and connected with the steel pipe 3 in the butt-joint area, and a formwork is erected and concrete is poured in the formed vertical joint to form a vertical joint concrete post-cast strip 15.

In addition, the steel pipe 3 is preferably a round steel pipe, the thickness of the shear wall can be made to be 180-200mm, and compared with a reinforced concrete or section steel concrete structure, the requirement of the round steel pipe concrete on the thickness of a concrete protective layer is low, generally only 3-4CM is needed, and the steel pipe is easy to implement for the common 180-200 thick concrete shear wall in China.

According to the invention, the high-strength concrete is used in the steel pipe, the strength which is 4-6 times that of the common concrete can be obtained, the effect is more obvious, the steel quantity of the steel pipe is increased, the diameter of the vertical steel bar (D8-D10) is reduced, and the steel bar is controlled to be the minimum reinforcement ratio. The reserved horizontal concrete cast-in-place strip only needs 200 plus 400mm in height, and the steel bars can be lapped, so that the defect of difficulty in connecting the steel bars of the traditional reinforced concrete shear wall is overcome.

Referring to fig. 7, the shear wall of the invention has flexible forms, can be in a straight shape, an L shape, a T shape, a cross shape, a U shape, a Z shape, a C shape, and can be mutually combined to form a special-shaped column frame structure system or a shear wall system according to requirements; the units and the frame columns are mutually matched and connected to form a frame-shear wall system and a frame-core tube structure system; the unit may also be connected to a support to form a frame-support structure system.

The invention further provides a fabricated steel tube concrete shear wall building structure system, as shown in fig. 8, which is formed by assembling the shear wall 100, the beam 200 and the floor slab 300, wherein the shear wall 100 is the shear wall, the beam 200 is a steel beam or a reinforced concrete beam, and the floor slab 300 is a prefabricated slab.

The connection mode of the shear wall 100 and the steel beam is as follows: the shear wall is connected with the steel beam in the same direction by adopting a rigid joint 21, and is connected with the steel beam in the vertical direction by adopting a hinged joint 22; generally, only the plane internal rigidity of the shear wall is considered, and the plane external rigidity is not considered, the plane internal steel beam adopts rigid connection nodes to improve the integral lateral rigidity, and the plane external steel beam adopts hinged nodes to avoid participating in lateral rigidity.

The connection mode of the shear wall 100 and the reinforced concrete beam is as follows: welding a section of I-shaped steel on the reinforcing steel bar at the end part of the reinforced concrete beam, and connecting the shear wall and the I-shaped steel according to the connection mode with the steel beam;

the connection mode of the shear wall 100 and the floor slab 300 is as follows: the upper and lower ribs of the floor slab penetrate through the gaps between the steel pipes to be connected with each other.

The invention is not limited in particular herein to the specific processes of rigid joints, hinged joints, and connection to reinforced concrete beams and floors.

The assembly type steel tube concrete shear wall building structure system has the following advantages:

the high adaptability can meet the requirement of structural side resistance and improve the flexibility of building layout, the thickness and the shape of the wall column can be flexibly adjusted as required, the requirements of various complex building flat vertical surfaces can be met, the requirements of different building forms and building heights can be met, large indoor space can be realized, the requirements of different groups on the division of the indoor space of the building in different periods can be met, the high-rise and super-high-rise shear wall can be applied to various residential shear walls, public building shear walls, high-rise and super-high-rise shear walls or cylinders, the structural cost can be reduced, the production and construction efficiency can be improved, the building space can be saved, and the building quality can be improved.

The indoor wall and the beam are equal in thickness, so that the problem that the exposed beam and the exposed column affect the indoor space is solved; the wire casing can be reserved for the equipment pipeline, and the building and decoration integrated design and construction are favorably realized.

Thus, it should be understood by those skilled in the art that while exemplary embodiments of the present invention have been illustrated and described in detail herein, many other variations and modifications can be made, which are consistent with the principles of the invention, from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.