CN214144324U - Steel grating support-free superposed dense rib plate - Google Patents

Abstract

The utility model discloses a steel grating exempts from to prop up coincide close floor, many vertical girds and many horizontal girds that are equipped with cross arrangement, the both ends of vertical gird reinforcing bar are the fixed stay end, vertical gird reinforcing bar links to each other by two steel gratings of face-to-face setting and constitutes, during the construction, the die block unit hangs and fixes and form a strip unit between two steel gratings, the die block unit includes the square mould shell that a plurality of buckles put, the bottom four sides of square mould shell are equipped with the flanging, square mould shell is fixed together along longitudinal arrangement and concatenation, steel grating's both ends and top protrusion die block unit, a floor die block is spliced into to all die block units, be formed with the horizontal gird reinforcing bar caulking groove of multichannel along transversely lining up on the floor die block, horizontal gird reinforcing bar sets up in horizontal gird reinforcing bar caulking groove, and link together all vertical gird reinforcing bars. The utility model discloses can make the ribbed floor can use in the prefabricated building.

Description

Steel grating support-free superposed dense rib plate

Technical Field

The utility model belongs to the building engineering field, concretely relates to steel grating exempts from to prop up close floor of coincide.

Background

In recent years, as the prefabricated building is developed, the prefabricated building is in a new period of rapid development. The prefabrication of conventional floor slabs is common, but the dense rib slabs are limited by the technology and are not well combined with fabricated buildings. In order to promote the further development of the fabricated building, the ribbed floor slabs need to be popularized and used in the fabricated building.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the technical problem that exists among the well-known technique and provide a steel grating that can be used for assembly type structure exempts from a close floor of coincide.

The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a steel grating support-free superposed dense rib plate is provided with a plurality of longitudinal rib beams and a plurality of transverse rib beams which are arranged in a crossed manner, two ends of a steel bar of each longitudinal rib beam are fixed supporting ends, the longitudinal rib beam steel bar is formed by connecting two steel gratings which are arranged face to face, when in construction, the bottom die unit is suspended and fixed between the two steel gratings to form a strip-shaped unit, the bottom die unit comprises a plurality of buckled square die shells, the four edges of the bottom of each square die shell are provided with outward turned edges, the square formworks are longitudinally arranged and spliced and fixed together, two ends and the top of the steel grating protrude out of the bottom die units, all the bottom die units are spliced into a floor slab bottom die, and a plurality of transverse rib beam steel bar caulking grooves which are transversely communicated are formed on the floor bottom die, and transverse rib beam steel bars are arranged in the transverse rib beam steel bar caulking grooves and connect all the longitudinal rib beam steel bars together.

The steel grating and the fixed connection structure between the bottom die units adopt a detachable connection structure.

The steel grating is made of open-pore section steel.

The steel grating is made of open-hole H-shaped steel.

The steel grating is made of a planar steel bar truss.

The square formwork is any one of a plastic formwork, a glass fiber reinforced plastic formwork, a metal formwork and a GRC film casing.

And two adjacent square formworks are connected through bolts or buckles.

The strip-shaped units adopt standardized design sizes.

The utility model has the advantages and positive effects that: the strip units of a bottom die unit are hung by two steel grids in a factory, the strip units are spliced into a ribbed slab bottom die on site, and transverse rib beam steel bars are bound on the bottom die to form the ribbed floor with integral bidirectional stress characteristic, so that the ribbed floor can be applied to fabricated buildings. Because the bottom die adopts a factory prefabricated structure, the construction efficiency can be greatly improved, and meanwhile, a support-free system is adopted, the bottom die of the floor slab can not be supported, so that the work efficiency is improved, and the cost of the support can be saved.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1;

fig. 4 is a schematic view of the bottom mold unit suspended and fixed between two steel grids in embodiment 1 of the present invention;

fig. 5 is a schematic structural diagram of embodiment 2 of the present invention;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a cross-sectional view of FIG. 5;

fig. 8 is a schematic view of the bottom mold unit of embodiment 2 of the present invention suspended and fixed between two steel grids.

In the figure: 1. a floor bottom die; 1-1, a bottom die unit; 1-1-1, square mould shell; 2. longitudinal rib beam reinforcing steel bars; 2-1, a plane steel bar truss; 2-2, opening H-shaped steel; 3. and transverse rib beam reinforcing steel bars.

Detailed Description

For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified in conjunction with the accompanying drawings as follows:

referring to fig. 1 to 8, a steel grating support-free overlapped dense rib plate is provided with a plurality of longitudinal rib beams and a plurality of transverse rib beams which are arranged in a crossed manner, two ends of a longitudinal rib beam steel bar 2 are fixed support ends, the longitudinal rib beam steel bar 2 is formed by connecting two steel gratings which are arranged face to face, during construction, a bottom die unit 1-1 is suspended and fixed between the two steel gratings 2-1 to form a strip unit, because the steel grating 2-1 adopts a sheet structure standing mode, the rigidity is higher, no support or a small amount of temporary support can be arranged during construction, the bottom die unit 1-1 comprises a plurality of buckled square formworks 1-1-1, the four sides of the bottom of the square formworks 1-1-1 are provided with flanging, and the square formworks 1-1-1 are arranged in a longitudinal direction and are spliced and fixed together, the two ends and the top of the steel grating protrude out of the bottom die unit 1-1, all the bottom die units 1-1 are spliced into a floor bottom die 1, a plurality of transverse rib beam steel bar caulking grooves which are transversely communicated are formed in the floor bottom die 1, and the transverse rib beam steel bars 1 are arranged in the transverse rib beam steel bar caulking grooves and are connected with all the longitudinal rib beam steel bars 2.

The floor bottom die 1 can be used as a component of the ribbed slab and can also be detached, depending on the structural design. When the floor bottom die 1 needs to be removed in the multi-ribbed plate structure, the fixed connection structure between the steel grating and the bottom die unit 1-1 adopts a detachable connection structure, such as bolt connection, so that the floor bottom die 1 is convenient to remove.

The square formwork 1-1-1 adopts a finished formwork with standard size, and can adopt any one of a reusable plastic formwork, a disposable non-dismantling mould glass steel formwork, a metal formwork and a GRC film casing, but the material of the square formwork 1-1-1 is not limited to the above-mentioned ones, and a finished formwork of other materials can also be adopted. The adjacent two square formworks 1-1-1 are connected through bolts or buckles to ensure that the connection part of the bottom die of the floor slab is firm and tight, so that the connection safety and the integrity of the bottom die are ensured, and the effects of facilitating field construction and avoiding slurry leakage are achieved. The strip-shaped units are recommended to adopt standardized design sizes, so that the mass production is facilitated.

In example 1, the steel grating is made of a planar steel bar truss 2-1. The two ends of the longitudinal rib beam steel bars extend out of the edge of the bottom formwork for at least 5d, d is the diameter of the steel bars so as to be conveniently connected with the edge beam, and the section size of the longitudinal ribs is determined according to strength calculation. The stress of the longitudinal rib beam steel bars is calculated according to the following two stages:

in the first stage, namely before the cast-in-place concrete reaches the designed strength value, the load is borne by the longitudinal rib beam steel bars, and the load comprises the dead weight of a formwork, the dead weight of a reinforced concrete material and the construction live load in the stage; and in the second stage, namely the stage after the post-cast concrete reaches the strength value specified by the design, the ribbed floor slab is calculated according to the whole bidirectional plate, and the load comprises the dead weight of the ribbed floor slab, the dead weight of a surface layer, a suspended ceiling and the like and the larger value of the construction live load in the stage and the variable load in the trial stage.

In example 2, the steel grid was made of open-celled steel sections. More specifically, the steel grating is made of open-cell H-section steel 2-2.

The strip-shaped units are prefabricated parts of a factory, and each strip-shaped unit comprises a bottom die unit 1-1 and steel gratings fixedly connected to two sides of the bottom die unit 1-1. During construction, after splicing the strip-shaped units on site, binding transverse rib beam reinforcing steel bars, laying floor slab distribution reinforcing steel bars and casting concrete in situ are sequentially carried out, and a floor slab bottom die is disassembled after concrete is solidified and formed to form an integral bidirectional stressed concrete dense rib plate. According to actual needs, the bottom die is not disassembled, so that the bottom die becomes a component of the rib plate.

To sum up, the utility model discloses utilize the concatenation of standard size's bar unit to constitute the close rib superstructure of two-way atress.

Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, which is within the scope of the present invention.

Claims (7)

1. The utility model provides a steel grating exempts from to prop up coincide close floor, is equipped with many vertical rib roof beams and many horizontal rib roof beams of cross arrangement, its characterized in that, the both ends of vertical rib roof beam reinforcing bar are the fixed end of supporting, vertical rib roof beam reinforcing bar is linked to each other by two steel grating that face-to-face set up and constitutes, and during the construction, the die block unit hangs to be fixed two form a strip unit between the steel grating, the die block unit includes the square mould shell that a plurality of buckles put, the bottom four sides of square mould shell are equipped with the flanging, square mould shell is fixed together along longitudinal arrangement and concatenation, the both ends and the top protrusion of steel grating the die block unit, all the die block unit splices into a floor die block be formed with the horizontal rib roof beam reinforcing bar caulking groove that the multichannel link up along the horizontal direction on the floor die block, horizontal rib roof beam reinforcing bar sets up in the horizontal rib roof beam caulking groove, and connecting all of the longitudinal rib reinforcing steel bars together.

2. The support-free overlapped ribbed plate of steel grating as claimed in claim 1, wherein the fixed connection structure between the steel grating and the bottom die unit is a detachable connection structure.

3. A steel grid bracing-free laminated dense ribbed slab as claimed in claim 1, wherein the steel grid is made of open-cell steel sections.

4. A steel grid bracing-free laminated dense ribbed slab as claimed in claim 3, wherein the steel grid is made of open-celled H-section steel.

5. A steel grating support-free superimposed dense floor according to claim 1, wherein the steel grating is made of a planar steel bar truss.

6. A steel grid bracing-free overlapped dense ribbed slab as claimed in claim 1, wherein the square formwork is any one of a plastic formwork, a glass reinforced plastic formwork, a metal formwork and a GRC film casing.

7. A steel grating support-free overlapped dense rib plate as claimed in claim 1, wherein two adjacent square formworks are connected by a bolt or a buckle.

Images