A wide-slot connection node structure between composite floor slabs

Abstract

This application discloses a wide-gap connection node structure between composite floor slabs, comprising: two precast composite floor slabs spaced apart; and a cast-in-place composite floor slab located at and above the relative gap between the precast composite floor slabs, with the bottom of the cast-in-place composite floor slab suspended below the gap between the two precast composite floor slabs. Both the precast and cast-in-place composite floor slabs have concave spaces on their bottom surfaces forming grooves, which are filled with a crack-resistant layer. This crack-resistant layer is flush with the bottom surfaces of the precast and cast-in-place composite floor slabs. The fact that the crack-resistant layer is located within the grooves on the bottom surfaces of the precast and cast-in-place composite floor slabs and is horizontally flush solves the problem that when repairing shrinkage wide gaps at the bottom surfaces of the precast and cast-in-place composite floor slabs, the repair layer would protrude from the bottom surfaces of the precast and cast-in-place composite floor slabs.

Description

Technical Field

[0001] This utility model relates to a wide-joint connection node structure between composite floor slabs, belonging to the technical field of composite building construction structure. Background Technology

[0002] In order to reduce the amount of supporting formwork erection during the construction of building floor slabs, composite floor slabs adopt a prefabricated and cast-in-place construction structure.

[0003] The existing technology for constructing building floor slabs using precast composite floor slabs and cast-in-place composite floor slabs is described in Chinese Patent Publication No. CN118756947A. After construction, the bottom surfaces of the precast composite floor slabs and cast-in-place composite floor slabs are flush. When shrinkage gaps appear at the bottom surfaces of the precast composite floor slabs and cast-in-place composite floor slabs for repair, the repair layer will protrude from the bottom surfaces of the precast composite floor slabs and cast-in-place composite floor slabs. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides a wide-slit connection node structure between composite floor slabs.

[0005] This utility model is achieved through the following technical solution.

[0006] This utility model provides a wide-joint connection node structure between composite floor slabs, comprising:

[0007] Precast composite floor slabs, consisting of two precast composite floor slabs spaced apart;

[0008] The cast-in-place composite floor slab is located at the relative intervals and above the precast composite floor slabs, and the bottom of the cast-in-place composite floor slab is suspended at the interval between the two precast composite floor slabs.

[0009] Both the precast composite floor slab and the cast-in-place composite floor slab have concave spaces on their bottom surfaces to form grooves. The grooves are filled with a crack-resistant layer, which is flush with the bottom surfaces of the precast composite floor slab and the cast-in-place composite floor slab.

[0010] The crack-resistant layer in the gap is composed of concrete plaster and crack-resistant mesh.

[0011] The two precast composite floor slabs are spaced apart and contain precast slab horizontal horizontal bars and precast slab longitudinal bars that are perpendicular to the precast slab horizontal horizontal bars. The ends of the precast slab horizontal horizontal bars of the two precast composite floor slabs are each provided with a precast slab horizontal bar hook section. The two precast slab horizontal bar hook sections overlap and are located in the cast-in-place composite floor slab at the interval between the two precast composite floor slabs.

[0012] The precast composite floor slab has truss reinforcement, and the bottom of the truss reinforcement is in contact with the horizontal horizontal reinforcement and the longitudinal reinforcement of the precast slab.

[0013] The top of the truss reinforcement is located within the cast-in-place composite floor slab, and the top of the truss reinforcement has longitudinal truss reinforcement, which is located within the cast-in-place composite floor slab.

[0014] The cast-in-place composite floor slab contains cast-in-place horizontal reinforcement and cast-in-place longitudinal reinforcement that is perpendicular to the cast-in-place horizontal reinforcement.

[0015] The beneficial effects of this utility model are as follows: the crack-resistant layer is located in the groove on the bottom surface of the precast composite floor slab and the cast-in-place composite floor slab and is horizontal and flush, which solves the problem that when a shrinkage crack occurs at the bottom surface of the precast composite floor slab and the cast-in-place composite floor slab, the repair layer will protrude from the bottom surface of the precast composite floor slab and the cast-in-place composite floor slab. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the cross-section of this utility model;

[0017] In the figure: 1-Precast composite floor slab; 11-Horizontal reinforcement of precast slab; 12-Hook section of horizontal reinforcement of precast slab; 13-Longitudinal reinforcement of precast slab; 14-Truss reinforcement; 2-Cast-in-place composite floor slab; 21-Horizontal reinforcement of cast-in-place slab; 22-Longitudinal reinforcement of cast-in-place slab; 23-Longitudinal reinforcement of truss. Detailed Implementation

[0018] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0019] like Figure 1 As shown.

[0020] This application discloses a wide-joint connection node structure between composite floor slabs, comprising:

[0021] Two precast composite floor slabs 1 are spaced apart. A cast-in-place composite floor slab 2 is positioned above and between the precast composite floor slabs 1. The cast-in-place composite floor slab 2 is suspended below its bottom at the interval between the two precast composite floor slabs 1. Both the precast composite floor slabs 1 and the cast-in-place composite floor slab 2 have concave spaces on their bottom surfaces, forming grooves filled with a crack-resistant layer 3. The crack-resistant layer 3 is flush with the bottom surfaces of the precast composite floor slabs 1 and the cast-in-place composite floor slab 2. The crack-resistant layer 3 is constructed by applying concrete plaster and adding crack-resistant mesh fabric.

[0022] The crack-resistant layer 3 is located in the groove on the bottom surface of the precast composite floor slab 1 and the cast-in-place composite floor slab 2 and is horizontal and flush. This solves the problem that when repairing the shrinkage gap at the bottom surface of the precast composite floor slab and the cast-in-place composite floor slab, the repair layer will protrude from the bottom surface of the precast composite floor slab and the cast-in-place composite floor slab.

[0023] The two precast composite floor slabs 1, which are spaced apart, have precast horizontal horizontal reinforcement 11 and precast longitudinal reinforcement 13 that are perpendicular to the precast horizontal horizontal reinforcement 11. The ends of the precast horizontal horizontal reinforcement 11 of the two precast composite floor slabs 1 each have a precast horizontal reinforcement hook section 12. The two precast horizontal reinforcement hook sections 12 overlap and are located in the cast-in-place composite floor slab 2 at the interval between the two precast composite floor slabs 1.

[0024] The precast composite floor slab 1 has truss reinforcement 14, the bottom of which contacts the horizontal cross reinforcement 11 and the longitudinal reinforcement 13 of the precast slab; the top of the truss reinforcement 14 is located within the cast-in-place composite floor slab 2, and the top of the truss reinforcement 14 has truss longitudinal reinforcement 23, which is located within the cast-in-place composite floor slab 2.

[0025] The cast-in-place composite floor slab 2 contains cast-in-place horizontal reinforcing bars 21 and cast-in-place longitudinal reinforcing bars 22 perpendicular to the cast-in-place horizontal reinforcing bars 21. Copper wires for hanging are fixed on the horizontal reinforcing bars 11 of the precast slab. The copper wires are hung inside the crack-resistant layer 3, and the crack-resistant layer 3 is connected to the horizontal reinforcing bars 11 of the precast slab for stress through the copper wires.

Claims

1. A wide-slit connection node structure between composite floor slabs, characterized in that, include: Precast composite floor slab (1), which consists of two precast composite floor slabs spaced apart; The cast-in-place composite floor slab (2) is located at the relative interval and above the precast composite floor slab (1), and the bottom of the cast-in-place composite floor slab (2) is suspended at the interval between the two precast composite floor slabs (1).

2. The composite floor slab inter-story wide joint connection node structure of claim 1, wherein: Both the precast composite floor slab (1) and the cast-in-place composite floor slab (2) have concave spaces on their bottom surfaces to form grooves. The grooves are filled with a crack-resistant layer (3), which is flush with the bottom surfaces of the precast composite floor slab (1) and the cast-in-place composite floor slab (2).

3. The composite floor slab inter-story wide joint connection node structure of claim 2, wherein: The crack-resistant layer (3) is made of concrete plaster and crack-resistant mesh.

4. The composite floor slab inter-story wide joint connection structure of claim 1, wherein: The two precast composite floor slabs (1) are spaced apart and have precast horizontal horizontal bars (11) and precast longitudinal bars (13) that are perpendicular to the precast horizontal horizontal bars (11). The ends of the precast horizontal bars (11) of the two precast composite floor slabs (1) are each precast horizontal bar hook sections (12). The two precast horizontal bar hook sections (12) overlap in the cast-in-place composite floor slab (2) at the interval between the two precast composite floor slabs (1).

5. The composite floor slab inter-story wide joint connection structure of claim 4, wherein: The precast composite floor slab (1) has truss reinforcement (14), and the bottom of the truss reinforcement (14) contacts the horizontal horizontal reinforcement (11) and the longitudinal reinforcement (13) of the precast slab.

6. The composite floor slab inter-story wide joint connection structure of claim 5, wherein: The top of the truss reinforcement (14) is inside the cast-in-place composite floor slab (2), and the top of the truss reinforcement (14) has truss longitudinal reinforcement (23), which is inside the cast-in-place composite floor slab (2).

7. The composite floor deck-to-deck joint structure of claim 1, wherein: The cast-in-place composite floor slab (2) contains cast-in-place horizontal horizontal reinforcement (21) and cast-in-place longitudinal reinforcement (22) perpendicular to the cast-in-place horizontal horizontal reinforcement (21).

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