Steel bar truss concrete composite floor slab structure
By setting clips and mortar layers on precast concrete slabs, the stability problem at the joints of reinforced concrete composite floor slabs was solved, enhancing the overall stability and adhesion of the concrete slabs.
Patent Information
- Application Number
- CN202520040671.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-08
AI Technical Summary
Existing reinforced concrete composite floor slab structures are prone to cracking at the joints, exhibiting poor stability and posing safety hazards.
Equally spaced concrete slab bottom reinforcement and steel truss body are set on the precast concrete slab, and a mortar layer is laid on the joint surface of the slab. The interlocking blocks are used to improve the splicing stability, and the same proportion of mortar is used to bond with the concrete to enhance the adhesion.
The design of the interlocking blocks and mortar layer improves the installation stability of the concrete slab and the strength of the joints, thereby enhancing the overall stability.
Smart Images
Figure CN223723976U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to concrete composite floor technology field, concretely is a kind of steel bar truss concrete composite floor structure. BACKGROUND
[0002] Concrete composite floor is a kind of assembly monolithic floor by precast slab and cast-in-place reinforced concrete layer superposition, precast slab is one of the components of floor structure, and is the permanent formwork of cast-in-place reinforced concrete superposition layer, cast-in-place superposition layer can be laid horizontal equipment pipeline, the integrity of this floor is good, rigidity is big, can save formwork, and the upper and lower surface of slab is flat, convenient for finishing, it is applicable to the high-rise building and large bay building of higher overall rigidity requirement.
[0003] Some steel bar truss concrete composite floor structures are simple, and only rely on cast-in-place concrete and reserved steel bars between the bonding surfaces of adjacent two steel bar truss concrete composite floors to connect when installing and splicing steel bar truss concrete composite floor, so that the joints of the two steel bar truss concrete composite floors are prone to cracking in later use, the stability is poor, and there is a certain safety hazard, and the steel bar truss concrete composite floor structure is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0004] To solve the problems of some steel bar truss concrete composite floor structures being simple, the joints of the two steel bar truss concrete composite floors being prone to cracking in later use, and the stability being poor, the utility model aims to provide a steel bar truss concrete composite floor structure.
[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a steel bar truss concrete composite floor structure, comprising a precast concrete slab, a plurality of concrete slab lower bars are fixedly arranged in the precast concrete slab at equal intervals, a plurality of steel bar truss bodies are fixedly arranged on the precast concrete slab at equal intervals, a plurality of steel bar truss bodies located on the same straight line are each fixedly provided with a concrete slab upper bar, two first clamping blocks and two second clamping blocks are symmetrically arranged on the two sides of the precast concrete slab, and two third clamping blocks and two fourth clamping blocks are symmetrically arranged on the two ends of the precast concrete slab.
[0006] Preferably, the steel bar diameters of the plurality of concrete slab lower bars and the concrete slab upper bars are not less than 8 mm, the steel bar diameters of the plurality of steel bar truss bodies are not less than 4 mm, the plurality of steel bar truss bodies are arranged along the main stress direction of the precast concrete slab, the distance between the steel bar truss body located at the edge of the precast concrete slab and the edge of the slab is not greater than 300 mm, and the distance between the adjacent two steel bar truss bodies is not greater than 600 mm.
[0007] Preferably, the four edges and the upper surface of the precast concrete slab are provided with mortar layers at the bonding surfaces with the cast-in-place layer, and the mortar layers are of the same proportion as the cast concrete, and the mortar layers on the precast concrete slab must be provided with rough surfaces, and the area of the rough surfaces should not be less than 80% of the bonding surface, and the roughness of the mortar layers on the precast concrete slab should not be less than 4mm.
[0008] Preferably, the first clamping block on the precast concrete slab can be clamped with the corresponding second clamping block on the adjacent precast concrete slab, and the third clamping block on the precast concrete slab can be clamped with the corresponding fourth clamping block on the adjacent precast concrete slab.
[0009] Compared with the prior art, the precast concrete slab has the advantages that:
[0010] 1. In the precast concrete slab installation and splicing, the first clamping block and the third clamping block can be clamped with the corresponding second clamping block and the fourth clamping block on the adjacent precast concrete slab, so that the overall stability of the precast concrete slab after installation and splicing is improved, and the strength of the joint between the two adjacent precast concrete slabs is improved.
[0011] 2. In the precast concrete slab, the four edges and the upper surface of the precast concrete slab are provided with mortar layers at the bonding surfaces with the cast-in-place layer, and the mortar layers are of the same proportion as the cast concrete, and the mortar layers on the precast concrete slab must be provided with rough surfaces, and the area of the rough surfaces should not be less than 80% of the bonding surface, and the roughness of the mortar layers on the precast concrete slab should not be less than 4mm. BRIEF DESCRIPTION OF DRAWINGS
[0012] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0013] Fig. 1 It is a schematic diagram of the overall structure of the present application;
[0014] Fig. 2 It is a schematic diagram of the transverse splicing structure of the present application;
[0015] Fig. 3 It is a schematic diagram of the longitudinal splicing structure of the present application.
[0016] In the drawing: 1, precast concrete slab; 2, lower concrete slab rib; 3, upper concrete slab rib; 4, steel truss body; 5, first clamping block; 6, second clamping block; 7, third clamping block; 8, fourth clamping block; 9, mortar layer. DETAILED DESCRIPTION
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Example: Figs. 1-3 As shown, this utility model provides a reinforced concrete composite floor slab structure, including a precast concrete slab 1, which is an existing precast reinforced concrete composite floor slab. Multiple equidistantly distributed concrete slab bottom reinforcement bars 2 are fixedly installed inside the precast concrete slab 1. Multiple equidistantly distributed steel truss bodies 4 are fixedly installed on the precast concrete slab 1. During the precasting of the precast concrete slab 1, the concrete slab bottom reinforcement bars 2 and the steel truss bodies 4 are combined with the precast slab to form an integral structure. Multiple steel truss bodies 4 located on the same straight line are all fixedly installed with… The precast concrete slab 1 has a reinforcing bar 3. Two first locking blocks 5 and a second locking block 6 are fixedly fixed on both sides of the precast concrete slab 1, and two third locking blocks 7 and a fourth locking block 8 are fixedly fixed at both ends of the precast concrete slab 1, respectively. When the precast concrete slab 1 is installed and spliced, the first locking blocks 5 and the third locking blocks 7 can be used to engage with the corresponding second locking blocks 6 and the fourth locking blocks 8 on the adjacent precast concrete slab 1, thereby improving the overall stability of the precast concrete slab 1 after installation and splicing, and improving the strength of the joint between two adjacent precast concrete slabs 1.
[0019] The diameter of the reinforcing bars 2 and 3 on the bottom of the concrete slab should be no less than 8 mm, and the diameter of the reinforcing bars 4 on the main body of the multiple steel trusses should be no less than 4 mm.
[0020] By adopting the above technical solution, when pouring precast concrete slab 1, the diameter of the steel bars used for the bottom reinforcement 2 and the top reinforcement 3 of the concrete slab should not be less than 8mm, and the diameter of the steel bars used for the steel truss body 4 should not be less than 4mm.
[0021] The multiple steel truss bodies 4 shall be arranged along the main stress direction of the precast concrete slab 1, and the steel truss body 4 located at the edge of the precast concrete slab 1 shall be no more than 300mm away from the edge of the slab, and the distance between two adjacent steel truss bodies 4 shall be no more than 600mm.
[0022] By adopting the above technical solution, the steel truss body 4 is arranged on the precast concrete slab 1 along the main stress direction, which can improve the load-bearing capacity of the steel truss body 4, make each steel truss body 4 bear the force evenly, and thus improve the service life of the precast concrete slab 1.
[0023] The four edges and the upper surface of the prefabricated concrete slab 1 are provided with mortar layers 9, and the mortar used in the mortar layers 9 is of the same proportion as the cast concrete.
[0024] By using the above technical scheme, the four edges and the upper surface of the prefabricated concrete slab 1 are provided with mortar layers 9 of the same proportion as the cast concrete, which can improve the adhesion of the cast concrete to the prefabricated concrete slab 1.
[0025] The mortar layer 9 on the prefabricated concrete slab 1 must be provided with a rough surface, and the area thereof should not be less than 80% of the bonding surface, and the rough concave-convex depth of the mortar layer 9 on the prefabricated concrete slab 1 should not be less than 4 mm.
[0026] By using the above technical scheme, the mortar layer 9 on the bonding surface between the prefabricated concrete slab 1 and the cast-in-place layer must be provided with a rough surface, which can improve the adhesion of the cast concrete to the prefabricated concrete slab 1.
[0027] The first clamping block 5 on the prefabricated concrete slab 1 can be clamped with the corresponding second clamping block 6 on the adjacent prefabricated concrete slab 1.
[0028] By using the above technical scheme, when the prefabricated concrete slab 1 is transversely spliced and installed, the first clamping block 5 on the prefabricated concrete slab 1 can be clamped with the corresponding second clamping block 6 on the adjacent prefabricated concrete slab 1.
[0029] The third clamping block 7 on the prefabricated concrete slab 1 can be clamped with the corresponding fourth clamping block 8 on the adjacent prefabricated concrete slab 1.
[0030] By using the above technical scheme, when the prefabricated concrete slab 1 is longitudinally spliced and installed, the third clamping block 7 on the prefabricated concrete slab 1 can be clamped with the corresponding fourth clamping block 8 on the adjacent prefabricated concrete slab 1.
[0031] Working principle: The lower concrete slab rib 2 and the steel bar truss body 4 are combined with the prefabricated slab to form an integral structure when the prefabricated concrete slab 1 is prefabricated, the steel bar diameter of the lower concrete slab rib 2 and the upper concrete slab rib 3 should not be less than 8 mm, the steel bar diameter of the steel bar truss body 4 should not be less than 4 mm, and the steel bar truss body 4 should be arranged along the main stress direction, which can improve the weight capacity of the steel bar truss body 4, make the stress of each steel bar truss body 4 uniform, and further improve the service life of the prefabricated concrete slab 1, the four edges and the upper surface of the prefabricated concrete slab 1 are provided with mortar layers 9 of the same proportion as the cast concrete, and the mortar layers 9 are provided with rough surfaces, which can improve the adhesion of the cast concrete to the prefabricated concrete slab 1.
[0032] When the prefabricated concrete slab 1 is transversely spliced and installed, the first clamping block 5 on the prefabricated concrete slab 1 can be clamped with the corresponding second clamping block 6 on the adjacent prefabricated concrete slab 1, and when the prefabricated concrete slab 1 is longitudinally spliced and installed, the third clamping block 7 on the prefabricated concrete slab 1 can be clamped with the corresponding fourth clamping block 8 on the adjacent prefabricated concrete slab 1, thereby improving the overall stability of the prefabricated concrete slab 1 after installation and splicing, and improving the strength of the joint between the two adjacent prefabricated concrete slabs 1.
[0033] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.
Claims
1. A steel trussed concrete composite floor structure comprising a precast concrete slab (1) characterised in that: The prefabricated concrete slab (1) is internally fixed with a plurality of concrete slab lower ribs (2) distributed at equal intervals, and is externally fixed with a plurality of steel bar truss bodies (4) distributed at equal intervals, a plurality of concrete slab upper ribs (3) are fixedly installed on the steel bar truss bodies (4) located on the same straight line, two first clamping blocks (5) and two second clamping blocks (6) are symmetrically arranged on the two sides of the prefabricated concrete slab (1), and two third clamping blocks (7) and two fourth clamping blocks (8) are symmetrically arranged on the two ends of the prefabricated concrete slab (1).
2. The steel trussed concrete composite floor structure as claimed in claim 1, wherein, The steel bar diameters of the plurality of concrete slab lower ribs (2) and the plurality of concrete slab upper ribs (3) should be not less than 8 mm, and the steel bar diameters of the plurality of steel bar truss bodies (4) should be not less than 4 mm.
3. The steel truss concrete composite floor structure according to claim 1, wherein The plurality of steel bar truss bodies (4) should be arranged along the main stress direction of the prefabricated concrete slab (1), the distance between the steel bar truss body (4) located at the edge of the prefabricated concrete slab (1) and the slab edge should be not greater than 300 mm, and the distance between the two adjacent steel bar truss bodies (4) should be not greater than 600 mm.
4. The steel truss concrete composite floor structure according to claim 1, wherein The four edges and the upper surface of the prefabricated concrete slab (1) are all paved with a mortar layer (9), and the mortar used in the mortar layer (9) should be of the same proportion as the cast concrete.
5. The steel truss concrete composite floor structure according to claim 1, wherein The mortar layer (9) on the prefabricated concrete slab (1) must be provided with a rough surface, and the area thereof should be not less than 80% of the bonding surface.
6. A steel trussed concrete composite floor structure as claimed in claim 5, wherein, The rough concave-convex depth of the mortar layer (9) on the prefabricated concrete slab (1) should be not less than 4 mm.
7. The steel trussed concrete composite floor structure as claimed in claim 1, wherein, The first clamping block (5) on the prefabricated concrete slab (1) can be clamped with the corresponding second clamping block (6) on the adjacent prefabricated concrete slab (1).
8. The steel trussed concrete composite floor structure as claimed in claim 1, wherein, The third clamping block (7) on the prefabricated concrete slab (1) can be clamped with the corresponding fourth clamping block (8) on the adjacent prefabricated concrete slab (1).