阅读说明：本技术 一种采用空心模板的混凝土楼板及其快速施工方法 (Concrete floor slab adopting hollow template and rapid construction method thereof ) 是由 郑芝鑫 曾栋材 于 2021-10-19 设计创作，主要内容包括：本申请涉及一种采用空心模板的混凝土楼板,其包括若干组箱体及钢筋组件,箱体的各组边框为角钢结构,箱体的高度大于芯模的高度；箱体的内底面与各组待安装的芯模的下端面形状配合；箱体下端面的四角位置均固定有支脚,箱体的四组竖直设置的边框上均开设有插孔,各组插孔距离箱体的内底面尺寸与芯模的高度相同；四组竖直设置的竖直边框上固定有基座,各组基座内部均安装有弹簧,插孔内部插接滑动有楔形块；钢筋组件包括分别分布于各组箱体上下端面位置的上层钢筋及下层钢筋。本申请的技术方案相对于现有的捆扎固定的作业方式,在进行芯模安装时的作业效率较高,且芯模安装后的位置稳定性提升。(The application relates to a concrete floor slab adopting a hollow template, which comprises a plurality of groups of box bodies and steel bar assemblies, wherein each group of frames of the box bodies are of an angle steel structure, and the height of each box body is greater than that of a core mold; the inner bottom surface of the box body is matched with the shape of the lower end surface of each group of core moulds to be installed; supporting legs are fixed at four corners of the lower end face of the box body, four groups of vertically arranged frames of the box body are provided with jacks, and the distance between each group of jacks and the inner bottom face of the box body is the same as the height of the core mold; bases are fixed on the four groups of vertically arranged vertical frames, springs are installed inside each group of bases, and wedge-shaped blocks are inserted into the insertion holes in a sliding mode; the reinforcing steel bar assembly comprises upper reinforcing steel bars and lower reinforcing steel bars which are respectively distributed on the upper end face and the lower end face of each group of box bodies. Compared with the existing bundling and fixing operation mode, the technical scheme of the application has the advantages that the operation efficiency is high when the core mold is installed, and the position stability after the core mold is installed is improved.)

1. The utility model provides an adopt concrete floor of hollow template which characterized in that: the steel bar core mould comprises a plurality of groups of box bodies (1) and steel bar assemblies (2) with the same specification, wherein the box bodies (1) are of cuboid structures with openings on the upper end faces, each group of frames of the box bodies (1) are of angle steel structures, and the height of each box body (1) is greater than that of a core mould; the inner bottom surface of the box body (1) is matched with the shape of the lower end surface of each group of core moulds (8) to be installed; supporting legs (11) which are vertically arranged and the lower end surfaces of which are abutted against the template (7) are fixed at four corners of the lower end surface of the box body (1), horizontally extending inserting holes (12) are formed in four groups of vertically arranged frames of the box body (1), and the distance from each group of inserting holes (12) to the inner bottom surface of the box body (1) is the same as the height of the core mold (8); a base (13) is fixed on a wing plate of one side of each group of vertically arranged vertical frames, which is far away from each group of notches, springs (131) are installed inside each group of the base (13), wedge blocks (14) are inserted and slid inside the insertion holes (12), and wedge surfaces of the wedge blocks (14) are obliquely and upwards arranged; the steel bar component (2) comprises upper-layer steel bars (21) and lower-layer steel bars (22) which are respectively distributed on the upper end face and the lower end face of each group of the box body (1).

2. A concrete floor slab using a hollow form according to claim 1, wherein: each group all be fixed with a plurality of first location nest of tubes (15) of group on four groups of frames of terminal surface under box (1), on the same group of frame first location nest of tubes (15) collineation sets up, first location nest of tubes (15) are including two sets of pipes of cross distribution from top to bottom, the reinforcing bar of distribution with great ease and each group in lower floor's reinforcing bar (22) first location nest of tubes (15) are pegged graft the cooperation.

3. A concrete floor slab using a hollow form according to claim 2, wherein: four groups of horizontally arranged supporting plates (3) in an angle steel structure are connected between four groups of frames at the upper end part of each group of the box body (1) in a counter-pulling manner, each group of the supporting plates (3) is positioned between any two adjacent groups of the frames, and a horizontal wing plate of each group of the supporting plates (3) deviates from the center of the upper end surface of the box body (1); a plurality of groups of second positioning pipe groups (32) which are distributed in a collinear manner are fixed on horizontal wing plates of the supporting plates (3), each group of second positioning pipe groups (32) comprises round pipes which are distributed in an up-and-down cross manner, and reinforcing steel bars which are distributed in a longitudinal and transverse manner in the upper layer of reinforcing steel bars (21) are in splicing fit with the second positioning pipe groups (32).

4. A concrete floor slab using a hollow form as claimed in claim 3, wherein: all draw fixed bolster (4) that are connected with the cross structure to four groups of vertical terminal surfaces of box (1), each group the crossing point position of fixed bolster (4) is all integrative to be fixed with socket (41) that the opening is vertical to be set up, and arbitrary adjacent two sets of install connecting rod (42) between the vertical terminal surface of the setting in opposite directions of box (1), the both ends of connecting rod (42) are hook-like, each group the both ends and two sets of connecting rod (42) on box (1) socket (41) are pegged graft fixedly.

5. A concrete floor slab using hollow formwork according to claim 4, wherein: the upper reinforcing steel bar (21) and install the vertical strengthening rib (5) that sets up of a plurality of groups between lower floor's reinforcing steel bar (22), each group strengthening rib (5) will upper reinforcing steel bar (21) and lower floor's reinforcing steel bar (22) realize the connection of drawing.

6. A concrete floor slab using hollow formwork according to claim 5, wherein: each group of the support legs (11) are of an internal thread pipe structure, the interior of each group of the support legs (11) is in threaded connection with a sealing screw (111), and the lower end face of each group of the sealing screw (111) is horizontally coplanar with the lower end face of the support legs (11).

7. A concrete floor slab using hollow formwork according to claim 6, wherein: a plurality of groups of bottom plates (16) are connected between two groups of parallel frames on the lower end surface of each group of the box body (1) in a counter-pulling way.

8. A rapid construction method of a concrete floor slab adopting a hollow template is characterized in that:

a. the template (7) is installed, each group of support rods (6) is erected on the ground, and each group of support rods (6) is vertically arranged; horizontally hoisting the template (7) to each group of supporting rods (6);

b. marking the upper end surface of the template (7) and determining the placement position of each group of box bodies (1); each group of box body (1) is prefabricated, each group of first positioning pipe group (15), each group of second positioning pipe group (32), each group of wedge block (14) and each group of socket (41) are installed on the box body (1), and each group of sealing screws (111) are in threaded connection with the support legs (11); placing each group of box bodies (1) at a scribing position on the template (7);

c. laying lower-layer steel bars, and inserting and fixing the steel bars which are distributed longitudinally and transversely in the lower-layer steel bars and each group of first positioning pipe groups (15) on the lower end surface of the box body (1); each group of connecting rods (42) is installed, and two ends of each connecting rod (42) are fixedly inserted into the sockets (41) on the two adjacent groups of box bodies (1);

d. each group of core moulds (8) are installed in the box body (1), each group of core moulds (8) are inserted from the vertical upper part of the box body (1), the four corners of the core moulds (8) are abutted against each group of wedge blocks (14), and the lower end surfaces of the wedge blocks (14) are abutted against the upper end surface of the core moulds (8);

e. mounting upper-layer steel bars (21), and inserting and fixing each group of steel bars and the second positioning pipe group (32) on each group of supporting plates (3); each group and the reinforcing ribs (5) are installed, and the reinforcing ribs (5) are connected with the upper-layer reinforcing steel bars (21) and the lower-layer reinforcing steel bars (22) in a counter-pulling mode;

f. completing the installation of each group of box bodies (1) on the template (7), installing each group of sockets (41) through a connecting rod (42), and realizing the connection between each group of box bodies (1);

g. enclosing the periphery of the template (7), and performing subsequent pouring and maintenance of concrete mortar; after the concrete mortar loses water and is hardened, the surrounding part of the periphery of the template (7) is dismantled.

Technical Field

The application relates to the field of building construction, in particular to a concrete floor slab adopting a hollow template and a rapid construction method thereof.

Background

The hollow floor slab is formed by placing the embedded internal molds according to a certain rule and then pouring concrete on site to form the floor slab containing the light solid block hollow box body in the floor slab. Compared with solid floor slab, the hollow floor slab with the same thickness can still meet the requirements of bending resistance, shearing resistance, punching resistance, deflection and crack, and because the self weight of the floor slab is reduced by about 40-50%, the internal force of the beam-slab-column wall is reduced, and the foundation load is reduced, thereby saving structural materials and reducing the construction cost.

Because the middle part of the concrete floor slab is replaced by the aluminum foil core die, the self weight of the floor slab is reduced by about 40-50 percent compared with a solid floor slab with the same thickness. Since the displaced concrete is located in the middle of the floor slab, and the concrete does not contribute to the bending resistance of the floor slab, the bending resistance of the hollow floor slab is not reduced compared with that of a solid floor slab with the same thickness. Although the substituted concrete improves the shearing resistance and the impact cutting resistance, the shearing resistance and the impact cutting resistance of the floor slab are usually far greater than the shearing force and the impact cutting force which are applied to the floor slab, in addition, the self weight of the hollow floor slab is greatly reduced, and the shearing force and the impact cutting force in the floor slab are correspondingly reduced, so the shearing resistance and the impact cutting resistance of the hollow floor slab are still greater than the shearing force and the impact cutting force which are applied to the hollow floor slab. The concrete in the tensile area of the hollow floor slab is reduced, the longitudinal reinforcing bar arrangement rate calculated according to the effective section area of the tensile concrete is increased, and the hollow floor slab has smaller cracks compared with a solid floor slab with the same thickness.

When the existing hollow floor slab is constructed, all the core moulds are prefabricated in advance, and the core moulds are of a cuboid structure; after the erection of the bracket is finished on the ground, laying the templates, then bundling the reinforcing steel bars, and installing each group of core moulds after the bundling of the reinforcing steel bars at the bottommost layer is finished; in order to improve the stability of the core mold in the pouring process and reduce the displacement caused by the impact of concrete mortar, the existing fixing mode is mainly bound and fixed by means of steel wires.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: in the existing construction process, constructors fix all core die groups on a template by steel wires in the core die installation process; winding from multiple directions and bypassing the bottom layer of steel bars; in the installation process of the core mold, a large amount of bundling operation causes lower overall construction efficiency, and is difficult to meet engineering projects with shorter construction periods, so that the improvement space exists.

Disclosure of Invention

In order to facilitate the fixed mounting of each group of core moulds above the mould plate and improve the overall efficiency of construction engineering, the application provides a concrete floor slab adopting hollow mould plates and a rapid construction method thereof.

The application provides an adopt concrete floor of hollow template adopts following technical scheme:

a concrete floor slab adopting a hollow template comprises a plurality of groups of box bodies and steel bar assemblies with the same specification, wherein each box body is of a cuboid structure with an opening on the upper end surface, each group of frames of the box bodies are of an angle steel structure, and the height of each box body is greater than that of a core mold; the inner bottom surface of the box body is matched with the shape of the lower end surface of each group of core moulds to be installed; the four corners of the lower end face of the box body are respectively fixed with a vertically arranged support leg, the lower end face of the support leg is abutted against the template, four vertically arranged groups of frames of the box body are respectively provided with a horizontally extending jack, and the distance from each group of jacks to the inner bottom face of the box body is the same as the height of the core mold; a base is fixed on a wing plate of one side of each group of vertically arranged vertical frames, which is far away from each group of notches, springs are arranged in each group of bases, wedge blocks are inserted and slid in the jacks, and wedge surfaces of the wedge blocks are obliquely and upwards arranged; the steel bar assembly comprises upper-layer steel bars and lower-layer steel bars which are distributed on the upper end face and the lower end face of each group of the box body respectively.

By adopting the technical scheme, before the construction process of the hollow floor slab is carried out, constructors design the box bodies, and the specifications of all the groups of box bodies are the same and are prefabricated; during on-site construction, placing each group of boxes on a template, and installing a core mold in each group of boxes; when the core mold is installed, the positions of the four corners of the lower end surface of the core mold are abutted against the wedge surfaces of the wedge blocks, the wedge blocks of each group continuously slide towards the inside of the base along the insertion hole along with the continuous pressing of the core mold, and the spring is pressed and accumulates elastic potential energy; after the core mold is completely inserted into the box body, the lower end face of the core mold is abutted against the inner bottom face of the box body, the wedge blocks of each group are continuously inserted into the box body along the insertion holes under the action of elastic thrust of the springs, the lower end face of each wedge block of each group is abutted against the upper end face of the core mold, the wedge blocks of each group realize the compression and fixation of the core mold, and finally, the upper layer steel bars and the lower layer steel bars in the steel bar assembly are laid; because the mass of each group of boxes is larger, after the core moulds of each group are inserted and fixed into the box body, the core moulds and the boxes are integrally arranged, so that in the later pouring process of concrete mortar, the flowing concrete mortar is not easy to impact the core moulds of each group, the core moulds of each group are not easy to shift, and the core moulds of each group are not easy to float under the action of the wedge blocks of each group; therefore, for the fixed operation mode of current tying up, the operating efficiency when carrying out the mandrel installation is higher for this application's technical scheme, and the position stability after the mandrel installation promotes, has significant meaning to the construction quality who promotes hollow floor.

Preferably, a plurality of first positioning pipe groups are fixed on four groups of frames on the lower end face of each group of box body, the first positioning pipe groups on the same group of frames are arranged in a collinear manner, each first positioning pipe group comprises two groups of round pipes which are distributed in a cross manner from top to bottom, and reinforcing steel bars which are distributed in a longitudinal and transverse manner in the lower layer of reinforcing steel bars are in splicing fit with the first positioning pipe groups.

Through adopting above-mentioned technical scheme, first location nest of tubes is located each group angle steel of terminal surface under the box, the event is when carrying out laying of lower floor's reinforcing bar on the template, the installation of lower floor's reinforcing bar goes on with the help of each first location nest of tubes of group this moment, the setting up of each group's stabilizer blade makes the box by the set-up height, the event has realized being certain clearance between each group's low-rise reinforcing bar and the template, when concreting mortar, the low-rise reinforcing bar is by the complete cladding in concrete mortar, construction quality to guaranteeing hollow floor has the lifting action.

Preferably, four groups of horizontally arranged supporting plates in an angle steel structure are connected between four groups of frames at the upper end part of each group of the box body in a counter-pulling manner, each group of the supporting plates is positioned between any two adjacent groups of the frames, and a horizontal wing plate of each group of the supporting plates deviates from the center of the upper end surface of the box body; and a plurality of groups of second positioning pipe groups which are distributed in a collinear manner are fixed on the horizontal wing plates of the supporting plates, each group of second positioning pipe groups comprises round pipes which are distributed in a cross manner from top to bottom, and the steel bars which are distributed in a longitudinal and transverse manner in the upper layer of steel bars are in splicing fit with the second positioning pipe groups.

By adopting the technical scheme, when the upper-layer steel bars are laid, the second positioning pipe groups are fixed on the supporting plates, and the supporting plates are used for oppositely pulling and connecting the angle steels, so that the structural strength of the box body is improved; inside each group of second locating tube group was inserted to each group's upper reinforcing bar, among the above-mentioned setting, realized the relation of connection between upper reinforcing bar and the box, so the upper reinforcing bar is difficult for taking place to shift after laying, makes the distribution of upper reinforcing bar all even.

Preferably, four groups of vertical end surfaces of the box body are respectively connected with a fixed support with a cross structure in a split-type manner, a socket with a vertically-arranged opening is integrally fixed at the cross point of each group of the fixed supports, any two adjacent groups of the box body are provided with a connecting rod between the vertical end surfaces which are oppositely arranged, two ends of each connecting rod are in a hook shape, and two ends of each group of the connecting rods are fixedly connected with the sockets on the two groups of the box body in an inserted manner.

By adopting the technical scheme, the fixed support is positioned on the vertical end faces around each group of the box body, each group of the sockets is further fixed at the position of the cross point of the fixed support, after the placement of each group of the box body on the template is completed, the connection between the box bodies is carried out by means of each group of the connecting rods, the connection between each group of the box bodies is realized by the arrangement of the connecting rods, and the box body is not easy to shift in the pouring process.

Preferably, a plurality of groups of reinforcing ribs which are vertically arranged are arranged between the upper layer reinforcing steel bars and the lower layer reinforcing steel bars, and the reinforcing ribs of the groups are used for realizing opposite-pulling connection of the upper layer reinforcing steel bars and the lower layer reinforcing steel bars.

Through adopting above-mentioned technical scheme, upper reinforcing bar and lower floor's reinforcing bar in the reinforcing bar subassembly distribute from top to bottom, form the steel reinforcement cage in the hollow floor slab work progress, the vertical setting of each group's strengthening rib, the strengthening rib carries out the split joint to upper reinforcing bar and lower floor's reinforcing bar, and then makes to form integratively between upper reinforcing bar and the lower floor's reinforcing bar, makes between upper reinforcing bar and the lower floor's reinforcing bar compacter.

Preferably, each group of the support legs is of an internal thread tube structure, the inside of each group of the support legs is in threaded connection with a sealing screw, and the lower end face of each group of the sealing screw is horizontally coplanar with the lower end face of the support leg.

Through adopting above-mentioned technical scheme, each group seals screw and stabilizer blade threaded connection, seals the internal thread structure that sets up to the assurance stabilizer blade of screw and can not be irritated by the mortar at the in-process of pouring, and after accomplishing the form removal, the terminal surface is the lower terminal surface of floor under each group's stabilizer blade this moment, will each group seal the screw and take out, can carry out the connection of the relevant part of interior decoration with the help of the internal thread structure of each group's stabilizer blade this moment.

Preferably, a plurality of groups of bottom plates are connected between two groups of parallel frames on the lower end face of each group of the box body in a counter-pulling manner.

By adopting the technical scheme, each group of bottom plates are positioned on the lower end surface of the box body, and after the core die is inserted into the box body, each group of bottom plates form a support for the lower end surface of the core die, so that the stability of the core die in the box body is improved; and when the mortar is poured, the mortar above the core mold is not easy to collapse due to the support of each group of bottom plates.

A rapid construction method of a concrete floor slab adopting a hollow template is characterized in that:

a. installing a template, namely erecting each group of supporting rods on the ground, wherein each group of supporting rods is vertically arranged; horizontally hoisting the template to each group of supporting rods;

b. marking the upper end surface of the template, and determining the placement position of each group of box bodies; each group of box body is prefabricated, each group of first positioning pipe group, each group of second positioning pipe group, each group of wedge block and each group of socket are installed on the box body, and each group of sealing screws are in threaded connection with the support legs; placing each group of boxes at a scribing position on the template;

c. laying lower-layer steel bars, and inserting and fixing the steel bars distributed longitudinally and transversely in the lower-layer steel bars and each group of first positioning pipe groups on the lower end surface of the box body; mounting each group of connecting rods, and inserting and fixing two ends of each connecting rod with sockets on two adjacent groups of box bodies;

d. installing each group of core moulds into the box body, and inserting each group of core moulds from the vertical upper part of the box body to ensure that the four corners of the core moulds are abutted against each group of wedge blocks, and the lower end surfaces of the wedge blocks are abutted against the upper end surfaces of the core moulds;

e. mounting upper-layer steel bars, and inserting and fixing each group of steel bars and the second positioning pipe group on each group of supporting plates; mounting each group and reinforcing ribs, and connecting the upper-layer reinforcing steel bars and the lower-layer reinforcing steel bars by the reinforcing ribs in a counter-pulling manner;

f. the installation of each group of box bodies on the template is completed, each group of sockets are installed through the connecting rods, and each group of box bodies are connected;

g. enclosing the periphery of the template, and performing subsequent pouring and maintenance of concrete mortar; and after the concrete mortar loses water and is hardened, removing the surrounding part of the template.

By adopting the technical scheme, in the construction process of the hollow floor slab, the positioning of each group of core moulds on the template is realized by means of each group of box bodies, the connection between the adjacent groups of box bodies is realized by each group of connecting rods, and the wedge-shaped blocks on each group of box bodies form the limiting effect on the core moulds; the upper layer reinforcing steel bar and the lower layer reinforcing steel bar are connected with the box body through the first positioning pipe groups and the second positioning pipe groups of the groups respectively, the installation of the core moulds on the template is more efficient and the position stability is improved through the arrangement, and the efficiency of the hollow floor slab in the construction process is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by means of placing the box body on the template and inserting the core mold into each group of box bodies, compared with the existing bundling and fixing operation mode, the technical scheme has the advantages that the operation efficiency is high when the core mold is installed, the position stability of the installed core mold is improved, and the method has obvious significance for improving the construction quality of the hollow floor slab;

2. by installing the first positioning pipe group and the second positioning pipe group on the box body, when the upper-layer steel bars are laid, the second positioning pipe groups are fixed on the supporting plates, the supporting plates are used for oppositely pulling and connecting the angle steels, and the structural strength of the box body is improved; each group of upper-layer steel bars are inserted into each group of second positioning pipe groups, and in the arrangement, the connection relationship between the upper-layer steel bars and the box body is realized, so that the upper-layer steel bars are not easy to shift after being laid, and the distribution of the upper-layer steel bars is uniform;

3. the fixed bolster is located each group box vertical terminal surface all around, and each socket of organizing is further fixed on the crossing point position of fixed bolster, after accomplishing to each group box placing on the template, carries out the connection between the box with the help of each group connecting rod, and the setting of connecting rod has realized the connection between each group box this moment, and the box is difficult to take place to shift at the in-process of pouring.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is an exploded view of the box, mandrel and rebar assembly of the present application;

fig. 3 is an enlarged view at a in fig. 2.

Description of reference numerals: 1. a box body; 11. a support leg; 111. a sealing screw; 12. a jack; 13. a base; 131. a spring; 14. a wedge block; 15. a first positioning tube group; 16. a base plate; 2. a reinforcement assembly; 21. upper layer steel bars; 22. lower layer steel bar; 3. a support plate; 32. a second positioning tube group; 4. fixing a bracket; 41. a socket; 42. a connecting rod; 5. reinforcing ribs; 6; a support bar; 7. a template; 8. and (4) forming a core mould.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

Example 1:

the embodiment of the application discloses a concrete floor slab adopting a hollow template. Referring to fig. 1, the ground is horizontally arranged, a plurality of groups of vertically arranged support rods 6 are erected on the ground, and the support rods 6 are made of steel pipes; the vertical upper end surfaces of the groups of support rods 6 are positioned on the same horizontal plane, the upper end surfaces of the groups of support rods 6 jointly support templates 7 horizontally arranged on all planes, and the templates 7 are made of steel plates or wood plates.

The concrete floor comprises a plurality of groups of box bodies 1 and steel bar assemblies 2 with the same specification, and the upper end surfaces of the box bodies 1 are provided with openings; a plurality of groups of core moulds 8 in a cuboid structure are placed on the upper end face of the template 7, each group of core moulds 8 are made of foam materials, and the outer wall of each core mould 8 is wrapped with aluminum foil. The box bodies 1 are placed on the upper end face of the formwork 7, and each group of box bodies 1 is prefabricated before construction. The groups of boxes 1 are arranged in rows and columns after being placed on the template 7. The steel bar component 2 comprises upper steel bars 21 and lower steel bars 22 distributed on the upper end surface and the lower end surface of each group of the box body 1.

Referring to fig. 2, each set of frames of the box body 1 has an angle steel structure such that a horizontal section of the box body 1 is matched with a horizontal section of the core mold 8. The height of the box body 1 is greater than that of the core mold 8, and all the groups of frames are welded and fixed integrally; the inner bottom surface of the box body 1 is matched with the shape of the lower end surface of each group of core moulds 8 to be installed; a plurality of groups of bottom plates 16 are connected between two groups of parallel frames on the lower end surface of each group of box bodies 1 in a counter-pulling manner, wherein 2 groups are preferred; for a box 1 of larger size, the number of floors 16 is increased to ensure strong support for the core mold 8.

The four corners of the lower end face of the box body 1 are fixed with support legs 11 which are vertically arranged, the lower end face of each support leg 11 is abutted against the template 7, each group of support legs 11 are in an internal threaded tube structure (not shown in the figure), the internal threads of each group of support legs 11 are connected with sealing screws 111, and the lower end face of each group of sealing screws 111 is horizontally coplanar with the lower end face of each support leg 11; the sealing screw 111 has an outer-circle and inner-hexagon structure.

Referring to fig. 2 and 3, four groups of vertically arranged angle steels of the box body 1 are all provided with horizontally extending jacks 12, the jacks 12 are of a square structure, and the distance between each group of jacks 12 and the inner bottom surface of the box body 1 is the same as the height of the core mold 8; a base 13 is fixed on a wing plate of one side of each group of notches of the four groups of vertically arranged frames, the base 13 is of a channel steel structure, the notches of the base 13 face the insertion holes 12, and the lower end face of the base 13 is blocked; a spring 131 is arranged in each group of bases 13, and one end of the spring 131 facing the bases 13 is fixedly connected with the bottom of each base 13; the wedge block 14 is inserted and slid in the insertion hole 12, the opening shape of the insertion hole 12 is matched with the maximum vertical section of the wedge block 14, the wedge surface of the wedge block 14 is arranged obliquely upwards, when the core mold 8 is inserted into the box body 1, the corner of the lower end surface of the core mold 8 is abutted and slid with the wedge surface of each group of wedge blocks 14, then each group of springs 131 are compressed, and one side, facing the base 13, of the wedge block 14 is fixedly connected with the end part of each spring 131.

A plurality of groups of first positioning pipe groups 15 are fixed on four groups of angle steels on the lower end surface of each group of box bodies 1, the first positioning pipe groups 15 on the same group of frames are arranged in a collinear manner, each group of first positioning pipe groups 15 comprises two groups of round pipes which are distributed in a crossed manner from top to bottom, and the pipe diameters of the round pipes are not less than the outer diameter of the lower-layer steel bar 22; the vertically and horizontally distributed steel bars in the lower layer of steel bars 22 are in splicing fit with the first positioning pipe groups 15; the height of the lower layer reinforcing steel bars 22 from the plane of the lower end surfaces of the groups of support legs 11 is not less than 10 cm. Four groups of horizontally arranged supporting plates 3 with angle steel structures are connected between four groups of angle steels at the upper end part of each group of box bodies 1 in a counter-pulling manner, each group of supporting plates 3 are positioned between any two adjacent groups of frames, and the horizontal wing plates of each group of supporting plates 3 deviate from the center of the upper end surface of each box body 1; a plurality of groups of second positioning pipe groups 32 which are distributed collinearly are fixed on the horizontal wing plates of each group of supporting plates 3, each group of second positioning pipe groups 32 comprises two groups of round pipes which are distributed in a cross way from top to bottom, and the pipe diameters of the round pipes are not less than the outer diameter of the upper-layer steel bar 21; the vertically and horizontally distributed steel bars in the upper layer of steel bars 21 are in inserted fit with the second positioning pipe groups 32.

Four groups of vertical end surfaces of each group of the box body 1 are respectively fixed with a fixed support 4, the fixed supports 4 are in a cross-shaped structure in a pulling connection mode, a socket 41 (refer to fig. 2) with a vertically arranged opening is integrally fixed at the cross point of each group of the fixed supports 4, and the socket 41 deviates from the interior of the box body 1; connecting rods 42 are arranged between the oppositely arranged vertical end surfaces of any two adjacent groups of the box bodies 1, two ends of each connecting rod 42 are hook-shaped, and two ends of each group of the connecting rods 42 are fixedly inserted into the sockets 41 on the two groups of the box bodies 1.

A plurality of groups of reinforcing ribs 5 which are vertically arranged are arranged between the upper-layer reinforcing steel bars 21 and the lower-layer reinforcing steel bars 22, and the height of each reinforcing rib 5 is matched with the vertical height difference between the upper-layer reinforcing steel bars 21 and the lower-layer reinforcing steel bars 22; the both ends of strengthening rib 5 are crooked to be set up, and each group's strengthening rib 5 realizes drawing the connection with upper reinforcing bar 21 and lower floor's reinforcing bar 22.

Example 2:

a rapid construction method of a concrete floor slab adopting a hollow template comprises the following steps:

a. installing a template 7, namely erecting each group of support rods 6 on the ground, and installing inclined struts when each group of support rods 6 are installed to ensure that each group of support rods 6 are vertically arranged; horizontally hoisting the template 7 to each group of support rods 6; at the moment, the lower end surface of the template 7 is attached to the upper end surfaces of the groups of support rods 6;

b. marking the upper end surface of the template 7, and determining the placement position of each group of box bodies 1; each group of box body 1 is prefabricated, each group of first positioning tube group 15, each group of second positioning tube group 32, each group of wedge block 14 and each group of socket 41 are installed on the box body 1, and each group of sealing screws 111 are in threaded connection with the support leg 11; placing each group of box bodies 1 at a scribing position on the template 7;

c. laying lower-layer steel bars 22, and inserting and fixing the steel bars distributed longitudinally and transversely in the lower-layer steel bars 22 and each group of first positioning pipe groups 15 on the lower end surface of the box body 1; each group of connecting rods 42 is installed, and two ends of each connecting rod 42 are fixedly inserted into the sockets 41 on the two adjacent groups of box bodies 1;

d. installing each group of core moulds 8 into the box body 1, inserting each group of core moulds 8 from the vertical upper part of the box body 1, enabling the four corners of the core moulds 8 to be abutted against each group of wedge blocks 14, and enabling the lower end faces of the wedge blocks 14 to be abutted against the upper end faces of the core moulds 8;

e. installing upper-layer steel bars 21, and fixedly inserting the steel bars in each group into the second positioning tube groups 32 on the support plates 3 in each group; installing each group and the reinforcing ribs 5, and connecting the upper-layer reinforcing steel bars 21 and the lower-layer reinforcing steel bars 22 by the reinforcing ribs 5 in a counter-pulling manner;

f. completing the installation of each group of box bodies 1 on the template 7, installing each group of sockets 41 through connecting rods 42, and realizing the connection among each group of box bodies 1;

g. enclosing the periphery of the template 7, and performing subsequent pouring and maintenance of concrete mortar; and after the concrete mortar loses water and is hardened, removing the surrounding part of the template 7.

By adopting the technical scheme, in the construction process of the hollow floor slab, the positioning of each group of core moulds 8 on the template 1 is realized by means of each group of box bodies 1, the connection between the adjacent groups of box bodies 1 is realized by each group of connecting rods 42, and the wedge blocks 14 on each group of box bodies 1 have a limiting effect on the core moulds 8; upper reinforcing bar 21 and lower floor's reinforcing bar 22 realize being connected with box 1 with the help of each first location nest of tubes 15 of group and second location nest of tubes 32 respectively, and the above-mentioned setting makes each core mould 8 installation on template 1 high efficiency and positional stability promote more, makes the efficiency of hollow floor in the work progress promote.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.