CN218911932U - Prefabricated superimposed sheet of indent of no string reinforcing bar of assembled building - Google Patents

Abstract

The utility model discloses a pressing groove prefabricated laminated slab of an assembly type building no-upper chord steel bar, which comprises a concrete slab body, wherein lower chord steel bars are fixedly arranged in the concrete slab body, web member steel bars are fixedly arranged on one surface of the concrete slab body, a plurality of grooves are formed in the edge of one surface of the concrete slab body, which is provided with the web member steel bars, of the concrete slab body, web member-like steel bars are arranged at each groove in the concrete slab body, and the web member-like steel bars are exposed in the grooves. The reinforcing steel bars similar to web members in the grooves are used for preventing the reinforcing steel bars from being discharged from the periphery of the pressing groove prefabricated laminated slab, so that the problems caused by bending the reinforcing steel bars of the beard or prying and shifting the beam reinforcing steel bars in the construction process are solved; the prefabricated laminated slab does not contain the upper chord steel bars, when the electromechanical pipeline is paved, the influence of the web member steel bars and the lower chord steel bars on the pipeline can be ignored, after the electric pipeline is paved, the upper chord steel bars and the web member steel bars are bound and fixed by using the binding wires, so that the deformation of the upper chord steel bars can be avoided, the construction efficiency of the electromechanical pipeline on site is improved, and meanwhile, the influence on the strength of the steel bars is avoided.

Description

Prefabricated superimposed sheet of indent of no string reinforcing bar of assembled building

Technical Field

The utility model belongs to the technical field of building structure engineering, and particularly relates to a pressed groove prefabricated laminated slab of an assembled building without an upper chord steel bar.

Background

The composite floor slab is an assembled integral structure formed by prefabricated components and post-cast concrete composite layers, so that the defects of long construction period, large dead weight and the like of the cast-in-situ floor slab are overcome, the defects of poor integrity and earthquake resistance of the prefabricated assembled floor slab are overcome, and meanwhile, the advantages of cast-in-situ and prefabricated components are maintained. Compared with prefabricated assembled floor, the composite floor has the advantages of high rigidity, good shock resistance, light dead weight, high construction speed, template saving and the like. Based on the advantages of the laminated slab, the application range of the laminated slab in engineering construction at home and abroad is continuously expanded, and the laminated slab is a structural member with the highest application proportion in the current fabricated concrete structure.

The traditional reinforced truss concrete precast laminated slab needs to fully consider the influence of truss reinforcement elevation on pipeline laying during design, especially the thickness of a cast-in-situ layer is increased at the staggered and dense part of pipelines or a cast-in-situ structure is partially designed, if the cast-in-situ structure is a finish-assembled delivery structure, the cast-in-situ structure can be communicated with the finish-assembled design, and part of pipelines are designed as open pipes and buried in a suspended ceiling. In the planning stage before engineering construction, construction units should carry out deepening research on drawings by each construction unit of the tissue engineering, and the mutual influence of the pre-buried space position of the line box and truss steel bars is fully considered. However, in the installation and paving process of the electromechanical pipeline in the construction stage, if the electromechanical pipeline is subjected to cross paving, the winding steel bars are required to be pried, so that the winding steel bars are easy to deform, time and labor are consumed, and the construction efficiency is also influenced while the strength of the steel bars is reduced. The traditional reinforced truss concrete precast composite slab increases the time and labor cost of the design and construction stages.

Disclosure of Invention

The utility model aims to provide a pressing groove prefabricated laminated slab without upper chord steel bars for an assembled building, which can effectively avoid frequent interference between the upper chord steel bars and a pipeline in the process of installing the pipeline by using the traditional steel bar truss concrete prefabricated laminated slab, and simultaneously solves the problem of inconvenience caused by bending the reinforcing bars or prying and shifting the beam bars in the construction process.

The utility model adopts the technical scheme that the pressing groove prefabricated laminated slab without the upper chord steel bars for the fabricated building comprises a concrete slab body, wherein lower chord steel bars are fixedly arranged in the concrete slab body, web member steel bars are fixedly arranged on one surface of the concrete slab body, a plurality of grooves are formed in the edge of one surface of the concrete slab body, which is provided with the web member steel bars, of the concrete slab body, web member steel bars are connected to the positions of the grooves in the concrete slab body, and the web member steel bars are exposed in the grooves.

The utility model is also characterized in that:

the lower chord steel bars and the web member steel bars are bound and connected at the bottom of the concrete slab body.

The lower stress bar is arranged in the concrete slab body.

The plurality of grooves on the edge of one side of the concrete slab body are symmetrically arranged.

The shape of the web member-like steel bars is the same as that of the web member steel bars.

The beneficial effects of the utility model are as follows:

(1) Through the design of web member reinforcing bar in the recess, the indent prefabrication superimposed sheet is not gone out the muscle all around, can not produce the interference with the roof beam reinforcing bar all around when the floor is installed, has optimized construction process, can not consequently cause simultaneously the indentation prefabrication superimposed sheet concrete slab body to lack the arris and fall angle and surface damage yet.

(2) The prefabricated laminated slab does not contain the upper chord steel bars, when the electromechanical pipeline is laid, the influence of the web member steel bars and the lower chord steel bars on the pipeline can be ignored, after the electromechanical pipeline is laid, the upper chord steel bars and the web member steel bars are bound by using binding wires, so that the deformation of the upper chord steel bars can be avoided, and the construction efficiency of the electromechanical pipeline on site is improved without influencing the strength of the steel bars.

Drawings

Fig. 1 is a schematic structural view of a conventional four-side-out steel bar truss concrete composite slab;

FIG. 2 is a schematic diagram of a structure of a pressed groove prefabricated laminated slab without upper chord steel bars for an assembled building;

FIG. 3 is a cross-sectional view of truss reinforcement nodes of a pressed channel prefabricated composite slab without upper chord reinforcement of the fabricated building of the utility model;

FIG. 4 is a cross-sectional view of a concrete slab of a pressed channel precast composite slab without upper chord steel bars for an assembled building according to the present utility model;

fig. 5 is a schematic diagram of the use of the prefabricated laminated slab without the upper chord steel bar in the fabricated building.

In the figure, a concrete plate body 101, a web member reinforcing steel bar 102, a groove 103, a web member reinforcing steel bar 104, a lower chord reinforcing steel bar 105, an upper chord reinforcing steel bar 106, a lower stress reinforcing steel bar 107, a beard reinforcing steel bar 108, a pipeline 109 and a binding wire 110.

Detailed Description

The utility model will be described in detail below with reference to the drawings and the detailed description.

As shown in fig. 1, the hoops 108 of the conventional reinforced truss concrete precast composite slab extend from the four sides of the slab body by the lower stress bars 107 inside the precast composite slab body 101, wherein the hoops 108 with hooks remain on one side of the precast composite slab body 101. At the support of the plate end, the longitudinal stress steel bars in the prefabricated laminated slab are preferably extended from the plate end and anchored into post-cast concrete of the supporting beam or the wall, the anchoring length is not less than 5d (d is the diameter of the longitudinal stress steel bars), and the longitudinal stress steel bars preferably extend through the center line of the support. Because the beam reinforcement is bound first and then the superimposed sheet is hoisted, the problem that the traditional reinforced truss concrete prefabricated superimposed sheet can interfere with the surrounding beam reinforcement by the extending beard reinforcement 108 in the installation process is caused, and therefore, in the installation process, workers have to pry the surrounding beam reinforcement, the smooth installation of the reinforcement-out prefabricated superimposed sheet is ensured, the working efficiency is reduced, and the labor cost is increased.

In order to solve the above problems, the prefabricated laminated slab of the present utility model comprises a concrete slab body 101, wherein a lower chord steel bar 105 is fixedly arranged in the concrete slab body 101, a web member steel bar 102 is fixedly arranged on one surface of the concrete slab body 101, the lower chord steel bar 105 and the web member steel bar 102 are connected through binding at the bottom of the concrete slab body 101, and a plurality of grooves 103 are symmetrically arranged on the edge of one surface of the concrete slab body 101, on which the web member steel bar 102 is arranged, wherein the grooves 103 on the long sides of the prefabricated laminated slab body need to be densely distributed to bear the load from the slab body. The web-like steel bars 104 are connected to the concrete slab 101 at each groove 103, and the web-like steel bars 104 are exposed in the grooves 103, and the web-like steel bars 104 are similar to the web-like steel bars 102 in structure, and are called web-like steel bars only because the dimensions are different from those of the web-like steel bars 102.

The design of the groove 103 can simplify the installation of the prefabricated laminated slab and reduce the labor cost.

Through the design of web member steel bar 104 in recess 103, the indent prefabrication superimposed sheet is not gone out the muscle all around, can not produce the interference with the roof beam steel bar all around when the floor is installed, has optimized construction process, can not consequently cause simultaneously yet that the indent prefabrication superimposed sheet concrete slab body lacks the arris and falls angle and surface damage.

The structure does not contain a winding steel bar, when an electromechanical pipeline is paved, the influence of the web member steel bar and the lower winding steel bar on the pipeline can be ignored, and after the electromechanical pipeline is paved, the winding steel bar and the web member steel bar are bound and connected by using binding wires, so that the winding steel bar can be prevented from being deformed, the construction efficiency of the field electromechanical pipeline is improved, and meanwhile, the strength of the steel bar is not influenced.

Unlike conventional truss-concrete precast composite slabs, the truss reinforcement in the precast composite slab of the present utility model only retains the web members 102 and the lower chord reinforcement 105 of the truss reinforcement, and the web members 102 are exposed on the surface of the concrete slab 101. When the prefabricated laminated slab is used, the prefabricated laminated slab with the pressing groove is placed into a hole of a floor slab in the design, and the beam steel bars and the web member-like steel bars 104 are bound and fixed through binding wires 110, so that the prefabricated laminated slab with the pressing groove is installed.

When the construction is poured, the web member reinforcing steel bars 102 can be used as a 'split heads' for reinforcing steel bar net piece reinforcement, and the reinforcing steel bar protection layer is controlled, so that the effect of bonding concrete and ensuring the structure to be firmer can be achieved when the concrete is poured.

As shown in fig. 3, the truss steel bar node section of the prefabricated composite slab of the prefabricated building without the upper chord steel bar is shown, and according to fig. 3, the truss steel bar structure without the upper chord steel bar can be intuitively seen, the truss steel bar structure is arranged in such a way that 102 web member steel bars are welded into a whole, and 105 lower chord steel bars are binding steel bars at the lower part of the 102 web member steel bars. The method has the advantages that no conflict exists between the winding steel bars and the pipeline, the influence of truss steel bars on the pipeline can be ignored when the pipeline is paved, the possible deformation of the winding steel bars is avoided, the construction efficiency is improved, and meanwhile, the strength of the steel bars is not reduced.

As shown in fig. 4, lower stress bars 107 are provided in the concrete slab 101, and the lower stress bars 107 are located in the prefabricated laminated slab to receive tensile stress from the floor slab and its load.

As shown in fig. 5, the prefabricated laminated slab is a component part of a floor slab structure, and is a permanent template of a cast-in-situ reinforced concrete laminated layer, and horizontal equipment pipelines can be laid in the cast-in-situ laminated layer. Fig. 5 clearly reflects the state of the utility model when in use, the arrangement mode is that after the installation of the pressing groove prefabricated laminated slab without the winding steel bar is finished, the pipeline 109 is arranged on the prefabricated laminated slab, the web steel bar 102 is avoided as much as possible, the pipeline 109 can also pass through the web steel bar 102 under the condition that the diameter of the pipeline 109 allows, and the schematic diagram of the intersection of the pipeline 109 is also illustrated.

After the pipeline is laid, the upper chord steel bars 106 are bound on the web member steel bars 102 by the binding wires 110, binding and fixing are carried out at each web member, so that a complete structure is formed, and only partial nodes are selected for illustration in the figure. The problem that the upper chord steel bar has to be pried up due to the conflict between the pipeline and the upper chord steel bar in the actual construction process is solved, wherein the upper chord steel bar 106 is not a part of the pressing groove prefabricated laminated slab of the no upper chord steel bar of the fabricated building.

In practical use, the following points are notable: firstly, in the installation process, the beam steel bar is not required to be pried by a pry bar, so that the installation process is simplified, the restoration and the rechecking of the longitudinal bar at the upper part of the beam steel bar are prevented, and the mechanical structure of the beam steel bar at the beginning of the design is ensured; secondly, the utility model relates to a pressing groove prefabricated laminated slab, which is characterized in that reinforcing steel bars do not extend out of four side surfaces of the prefabricated laminated slab, and the size of a reserved plate hole is calculated according to a design drawing during construction and installation, so that the pressing groove type prefabricated laminated slab with the corresponding size is directly customized; thirdly, the utility model has no winding steel bar during design production, which can not restrict the height and position of the pipeline 109 and the box, and the problem of prying the winding steel bar is not faced when laying the pipeline on site, thereby improving the construction efficiency and preventing the strength of the steel bar from being reduced; fourth, the prefabricated laminated slab body 101 is made of concrete, the web member reinforcing steel bars 102, the web member-like reinforcing steel bars 104, the lower chord reinforcing steel bars 105, the lower stress bars 107 and the binding wires 110 are made of reinforcing steel bars, and the related materials are not different from the traditional reinforcement-out prefabricated laminated slab, but the installation process is simpler and more convenient than the former.

Claims (5)

1. The utility model provides a prefabricated superimposed sheet of indent of no last chord steel bar of assembled building, includes concrete slab body (101), its characterized in that, concrete slab body (101) internal fixation sets up chord steel bar (105) down, concrete slab body (101) one side is fixed to be set up web member bar (102), a plurality of recess (103) are seted up at the one side edge that is located to set up web member bar (102) on concrete slab body (101), be located every recess (103) department in concrete slab body (101) and connect web member bar (104), web member bar (104) are exposed in recess (103).

2. The prefabricated composite slab of the prefabricated building without the pressing groove of the upper chord steel bar according to claim 1, wherein the lower chord steel bar (105) and the web member steel bar (102) are welded at the bottom part positioned in the concrete slab body (101).

3. The prefabricated composite slab with the pressing groove for the no-upper-chord steel bars of the fabricated building according to claim 1, wherein a lower stress bar (107) is arranged in the concrete slab body (101).

4. The prefabricated laminated slab with the pressing groove for the no-upper-chord steel bars of the fabricated building according to claim 1, wherein a plurality of grooves (103) on one side edge of the concrete slab body (101) are symmetrically arranged.

5. The prefabricated composite slab of the assembled building without the upper chord reinforcement according to claim 1, wherein the web-like reinforcement (104) has the same shape as the web-like reinforcement (102).

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