Steel bar truss floor support plate hollow floor slab core mold connecting structure

Abstract

The utility model discloses a steel bar truss floor support plate hollow floor slab core mold connecting structure which comprises a bottom plate and a plurality of triangular steel bar trusses distributed on the bottom plate at intervals, a core mold is arranged between every two adjacent steel bar trusses, and the core molds are fixedly connected with the steel bar trusses on the two sides of the core molds respectively. The mandrel is fastened on the steel bar truss, the anti-floating problem of the mandrel in concrete pouring construction is effectively solved, and compared with traditional anti-floating measures such as rib pressing and steel wire binding, construction operation is convenient, and process cost is low. The core mold is lapped on the steel bar truss, the height of the core mold is accurately controlled, and the thickness of bottom concrete can be effectively guaranteed. The structure that cushion blocks are placed at the bottom of the core mold can be replaced, bottom cushion blocks are omitted, materials are saved, construction measures are reduced, and construction efficiency is improved. And the core mold can be prevented from being damaged by concentrated counter force at the cushion block, and the engineering quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of building structure technology, and in particular to a core mold connection structure for a steel truss floor deck hollow floor slab. Background Technology

[0002] In the existing engineering technology field, hollow concrete floor slab structures have significant advantages over traditional solid slabs in terms of reducing the self-weight of the floor slab, reducing seismic effects, sound insulation, and energy saving. At the same time, they can reduce overall costs and improve functionality. Currently, they are widely used in public buildings such as large-span office buildings, commercial buildings, large convention centers, libraries, and multi-story parking lots, as well as in large-span residential buildings.

[0003] Cast-in-place hollow core slabs are a type of floor system where embedded inner molds are placed according to specific rules within a cast-in-place concrete floor structure, and concrete is poured on-site to create cavities within the slab. The two main control points for the quality of this type of project are the thickness of the base slab and the anti-buoyancy of the core mold. The base slab thickness is typically achieved using cement blocks; each core mold generally has four blocks. To prevent the blocks from shifting during concrete pouring and vibration, they need to be tied and fixed to the base mold. The anti-buoyancy of the core mold is addressed using reinforcing bars and anti-buoyancy wires, which also require corresponding fixing measures to secure it to the base mold. These construction measures result in disadvantages for cast-in-place hollow core slabs, including increased construction costs, extended construction periods, and lower precision in project quality.

[0004] In addition, with the development of prefabricated buildings, high requirements have been placed on low-carbon and environmentally friendly construction methods in the construction field. The existing extensive process of cast-in-place hollow floor slabs is difficult to meet the requirements of construction efficiency and high quality. Utility Model Content

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a core mold connection structure for hollow floor slabs with steel truss floor decking, which solves the problems of inconvenient core mold installation and fixing and low construction efficiency in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A core mold connection structure for hollow floor slabs with steel trusses includes a base plate and multiple triangular steel trusses spaced apart on the base plate. A core mold is provided between adjacent steel trusses, and the core mold is fixedly connected to the steel trusses on both sides of the core mold.

[0008] As an optimization, the core mold is a solid structure or a hollow structure formed by interlocking upper and lower core molds.

[0009] As optimization, lap reinforcement is arranged in the core mold, and the two ends of the lap reinforcement are respectively lapped with the top chord of the steel bar truss on the two sides.

[0010] As optimization, a lug is arranged on each side of the core mold, and the lug is connected with the top chord of the corresponding side steel bar truss.

[0011] As optimization, the lug comprises a body, a U-shaped groove is formed at one end of the body away from the core mold, thereby forming a U-shaped connecting part, and the body is clamped with the top chord of the steel bar truss through the U-shaped groove.

[0012] As optimization, a plate bottom steel bar is further arranged between the core mold and the bottom plate.

[0013] Compared with the prior art, the present application has the following beneficial effects:

[0014] The utility model discloses,

[0015] 1, fasten the core mold on the steel bar truss, effectively solve the anti-floating problem of core mold in the concrete pouring construction, compared with the traditional pressing rib and steel wire binding etc.

[0016] 2, the core mold is lapped on the steel bar truss, and the height of the core mold is accurately controlled, so that the thickness of the bottom concrete can be effectively guaranteed.

[0017] 3, can replace the structure that the core mold bottom places the cushion block, cancels the setting of bottom cushion block, saves the material, reduces the construction measure, improves construction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is the structural schematic diagram of the utility model,

[0019] Fig. 2 It is the structural schematic diagram of the utility model installation core mold,

[0020] In the drawing, 1 is bottom plate, 2 is steel bar truss, 3 is core mold, 4 is plate bottom steel bar, 5 is lap reinforcement, 6 is lug. DETAILED DESCRIPTION

[0021] The utility model will be further explained in detail in combination with the drawings.

[0022] Specific implementation time: see Figs. 1-2 ,

[0023] In order to solve the problems in the prior art, the utility model provides a kind of steel bar truss floor support plate hollow floor core mould connecting structure, including bottom plate 1 and the multiple triangular steel bar trusses 2 of interval distribution in bottom plate 1, the triangular steel bar truss 2 includes one upper chord and two lower chords of triangular distribution, and web bar is provided between upper chord and lower chord.In adjacent steel bar truss 2 between core mould is established, and the steel bar truss 2 of its two sides is fixedly connected with core mould respectively.Core mould 3 is the solid structure made of light or heat preservation material or the hollow structure formed by upper core mould and lower core mould of mutual buckling, this connecting structure is simple, and core mould 3 is easily assembled in field or factory, and construction efficiency is improved.

[0024] Specifically, lap steel bars 5 are provided in core mould 3 and penetrate through opposite sides thereof, two ends of the lap steel bars 5 are respectively lapped and fixedly bound with the upper chords of the steel bar trusses 2 on the two sides thereof, so as to solve the support problem of core mould 3 and the anti-floating problem in the pouring process, and the structure is simple and convenient for construction.

[0025] Plate bottom steel bars 4 are also provided between core mould and bottom plate 1, and form hollow floor support plate after pouring.

[0026] In embodiment two, different from embodiment one, there are eaves 6 on the two sides of core mould 3, and the eaves 6 are connected with the upper chords of the steel bar trusses 2 on the corresponding sides.Specifically, the eaves 6 include a body, a U-shaped groove is formed on the end of the body away from the core mould, so as to form a U-shaped connecting part, and the body is clamped with the upper chord of the steel bar truss 2 through the U-shaped groove, so as to be clamped into the U-shaped groove through the upper chord of the steel bar truss 2, and the support and anti-floating problems of core mould 3 are solved at the same time, and the structure is simple and convenient for processing and assembly.

[0027] In summary, the utility model fastens core mould on steel bar truss, effectively solves the anti-floating problem of core mould in concrete pouring construction, and compared with traditional anti-floating measures such as pressing rib and steel wire binding, the construction operation is convenient, and the process cost is low.Core mould is lapped on steel bar truss, the height of core mould is accurately controlled, and the thickness of bottom concrete can be effectively ensured.Core mould can replace the structure that pad block is placed at the bottom of core mould, the setting of bottom pad block is cancelled, material is saved, construction measures are reduced, and construction efficiency is improved.Core mould can be prevented from being damaged due to concentrated reaction force at pad block, and engineering quality is improved.

[0028] Although the embodiments of the utility model have been shown and described, for those skilled in the art, various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and basis of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents, so the embodiments of the utility model are only illustrative examples of the utility model, and the embodiments of the utility model do not constitute limitation to the utility model in any aspect.

Claims

1. A core mold connection structure for a hollow core slab with steel truss floor deck, comprising a base plate and a plurality of triangular steel trusses spaced apart on the base plate, characterized in that, A core mold is provided between adjacent steel trusses. The core mold is suspended and fixedly connected to the steel trusses on both sides. The core mold is a solid structure or a hollow structure formed by interlocking upper and lower core molds. Lap bars are provided in the core mold, penetrating the opposite sides. The two ends of the lap bars are respectively lapped with the upper chord bars of the steel trusses on both sides. Alternatively, cantilevers are provided on both sides of the core mold, and the cantilevers are connected to the upper chord bars of the corresponding steel trusses.

2. The core mold connection structure for a steel truss floor deck hollow slab according to claim 1, characterized in that, The hook includes a body, and a U-shaped groove is provided at one end of the body away from the core mold to form a U-shaped connection part. The body is connected to the upper chord of the steel truss through the U-shaped groove.

3. The core mold connection structure for a steel truss floor deck hollow slab according to claim 1, characterized in that, A bottom steel bar is also inserted between the core mold and the base plate.

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