Prefabricated concrete composite floor structure

Abstract

The utility model provides a kind of assembled concrete composite floor structure, it is related to concrete composite floor technical field, including: prefabricated slab and concrete cast-in-place layer, the prefabricated slab upper end is poured with concrete cast-in-place layer, the prefabricated slab left and right side end is symmetrically provided with first component and second component, the first component and second component side end face are provided with filling cavity, the filling cavity is injected with anti-seepage filler layer, the first component and second component are fixed with the side end face of prefabricated slab by anti-seepage filler layer and are bonded, the first component and second component side end are correspondingly spliced by arc splicing surface each other, the prefabricated slab upper surface is combined with concrete cast-in-place layer by polypropylene fiber web.The utility model solves the problem that the concrete layer poured on the existing prefabricated slab is easy to seep from joint and affect the construction quality of composite floor.

Description

Technical Field

[0001] This utility model relates to the field of concrete composite floor slab technology, specifically to a prefabricated concrete composite floor slab structure. Background Technology

[0002] Composite floor slabs are assembled monolithic floor slabs made by stacking precast slabs and cast-in-place reinforced concrete layers. Composite floor slabs have good integrity, and the upper and lower surfaces of the slab are flat, which facilitates the finishing layer decoration. They are suitable for high-rise buildings and large-span buildings with high requirements for overall rigidity. However, the concrete layer cast on the existing precast slabs is prone to leakage from the joints, which affects the construction quality of composite floor slabs. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a prefabricated concrete composite floor slab structure is provided to solve the problem that the concrete layer poured on existing precast slabs is prone to leakage from the joints, affecting the construction quality of the composite floor slab.

[0004] To achieve the above objectives, a prefabricated concrete composite floor slab structure is provided, comprising: a precast slab and a cast-in-place concrete layer, wherein the cast-in-place concrete layer is poured on the upper end of the precast slab.

[0005] The precast slab is symmetrically provided with a first component and a second component on its left and right sides. The first and second components have filling cavities on their side faces. The filling cavities are filled with an impermeable filler layer. The first and second components are bonded and fixed to the side faces of the precast slab through the impermeable filler layer. The side faces of the first and second components are spliced ​​together with each other through arc-shaped splicing surfaces. The upper surface of the precast slab is combined with the cast-in-place concrete layer through a polypropylene fiber mesh.

[0006] Furthermore, the precast slab is provided with extending steel bars through its left and right ends, and the extending steel bars are inserted into the steel bar holes located on the side walls of the first and second components.

[0007] Furthermore, the upper end of the precast slab is connected to the cast-in-place concrete layer by triangular reinforcing bars, and a positioning pin is embedded and fixed on the upper surface of the precast slab.

[0008] Furthermore, a polypropylene fiber mesh is laid on the upper surface of the precast panel through a positioning pin.

[0009] Furthermore, the upper slope surfaces of the first and second components are provided with filling holes; and the filling holes are connected to the filling cavity.

[0010] Furthermore, the cavity wall of the filling cavity is provided with reinforcing bar holes and fixing holes; and bolts are connected in the fixing holes.

[0011] Furthermore, a sealing strip is adhered to the outer edge of the cavity wall, and the cavity is L-shaped.

[0012] Furthermore, the arc-shaped splicing surface is S-shaped, and the cast-in-place concrete layer is cast and bonded to the slopes of the first and second components.

[0013] The beneficial effects of this utility model are as follows: the prefabricated concrete composite floor slab structure of this utility model utilizes a first component, a second component, and an anti-seepage filler layer to form a leak-proof splicing structure. The components at both ends of adjacent precast slabs are joined and fixed together. The injected and cured anti-seepage filler layer ensures that the first component, the second component, and the side of the precast slab are tightly attached and fixed, which facilitates the reinforcement of the strength of the prefabricated concrete composite floor slab assembly splicing joint, effectively reduces the occurrence of grout seepage and cracks at the splicing joints of the precast concrete slabs, and ensures that the cast-in-place concrete layer can be stably poured onto the surface of the precast slab, thereby improving the construction quality of the prefabricated concrete composite floor slab. Attached Figure Description

[0014] Figure 1 This is a front view cross-sectional structural diagram of the prefabricated concrete composite floor slab structure according to an embodiment of the present utility model.

[0015] Figure 2 This is a top view of the prefabricated slab structure according to an embodiment of the present invention.

[0016] Figure 3 This is a three-dimensional structural diagram of the second component in an embodiment of the present utility model.

[0017] Figure 4 This is a three-dimensional cross-sectional structural diagram of the first component in an embodiment of the present utility model.

[0018] In the diagram: 1. Precast slab; 11. Extended reinforcing bar; 12. Triangular reinforcing bar; 13. Positioning pin; 2. Cast-in-place concrete layer; 3. First component; 31. Arc-shaped splice surface; 32. Fixing hole; 4. Second component; 41. Sealing strip; 42. Filling cavity; 43. Reinforcing bar hole; 44. Filling hole; 5. Impermeable filler layer; 6. Polypropylene fiber mesh. Detailed Implementation

[0019] Reference Figures 1 to 4 As shown, this utility model provides a prefabricated concrete composite floor slab structure, including: a precast slab 1 and a cast-in-place concrete layer 2, wherein the cast-in-place concrete layer 2 is poured on the upper end of the precast slab 1.

[0020] The precast slab 1 is symmetrically provided with a first component 3 and a second component 4 on its left and right sides. The side faces of the first component 3 and the second component 4 are provided with filling cavities 42, and the filling cavities 42 are filled with an impermeable filler layer 5. The first component 3 and the second component 4 are bonded and fixed to the side faces of the precast slab 1 through the impermeable filler layer 5. The side faces of the first component 3 and the second component 4 are spliced ​​together with each other through an arc-shaped splicing surface 31. The upper surface of the precast slab 1 is combined with the cast-in-place concrete layer 2 through a polypropylene fiber mesh 6.

[0021] First, the arc-shaped splicing surfaces 31 of the first component 3 and the second component 4 are joined together and fixed with bolts. Then, the first component 3 and the second component 4 are respectively attached to the side ends of two adjacent precast slabs 1. The cured anti-seepage filler layer 5 is injected to make the first component 3 and the second component 4 tightly attached to the side of the precast slab 1. After the precast slab 1 is assembled and installed, it is supported at the lower end of the precast slab 1 by a support device. Then, the cast-in-place concrete layer 2 is poured to strengthen the strength of the splicing joint of the precast concrete slab, effectively reduce the occurrence of grout seepage and cracks at the splicing joint of the precast concrete slab, and ensure that the cast-in-place concrete layer can be stably poured on the surface of the precast slab, thereby improving the construction quality of the precast concrete composite slab.

[0022] In this embodiment, extended reinforcing bars 11 are provided through the left and right ends of the precast slab 1, and the extended reinforcing bars 11 are inserted into the reinforcing bar holes 43 located on the side walls of the first component 3 and the second component 4. The upper end of the precast slab 1 is connected to the cast-in-place concrete layer 2 through triangular reinforcing bars 12, and positioning pins 13 are embedded and fixed on the upper surface of the precast slab 1. Polypropylene fiber mesh 6 is laid on the upper surface of the precast slab 1 through the positioning pins 13.

[0023] As a preferred embodiment, the extended reinforcing bar 11 facilitates the connection between the first component 3 and the second component 4, distributing the concentrated load to the surrounding reinforcing bars and enhancing the overall load-bearing capacity and stability of the precast slab 1. The triangular reinforcing bar 12 reinforces the cast-in-place concrete layer 2, making the assembly of the cast-in-place concrete layer 2 and the precast slab 1 more secure. The polypropylene fiber mesh 6 effectively disperses the pressure, enhancing the load-bearing strength of the precast slab 1.

[0024] In this embodiment, the upper slope surfaces of the first component 3 and the second component 4 are provided with filling holes 44, which are connected to the filling cavity 42. The cavity wall of the filling cavity 42 is provided with reinforcing bar holes 43 and fixing holes 32, and bolts are connected within the fixing holes 32. A sealing strip 41 is adhered to the outer edge of the cavity wall of the filling cavity 42, and the filling cavity 42 is L-shaped. The arc-shaped splicing surface 31 is S-shaped, and the cast-in-place concrete layer 2 is cast and bonded to the slope surfaces of the first component 3 and the second component 4.

[0025] As a preferred embodiment, an epoxy resin mortar anti-seepage filler layer 5 is injected into the filling cavity 42 through the filler hole 44. This ensures the epoxy resin mortar anti-seepage filler layer 5 fully fills the gaps at the side ends of the precast slab 1, preventing the grout from the upper cast-in-place concrete layer 2 from seeping out of the joints of the precast slab 1. This effectively reduces grout seepage and cracking at the joints of the precast concrete slabs, ensuring the cast-in-place concrete layer can be firmly cast onto the surface of the precast slab, thus improving the construction quality of the precast concrete composite floor slab. The S-shaped arc splicing surface 31 makes the splicing of the first component 3 and the second component 4 smoother and tighter, improving the sealing effect of the splicing between the first component 3 and the second component 4.

[0026] This utility model of prefabricated concrete composite floor slab structure can effectively solve the problem that the concrete layer poured on the existing precast slab is prone to leakage from the joints, affecting the construction quality of the composite floor slab. It facilitates the reinforcement of the strength of the assembled splice of the concrete composite floor slab, effectively reduces the occurrence of grout leakage and cracks at the splice of the precast concrete slab, and ensures that the cast-in-place concrete layer can be stably poured on the surface of the precast slab, thereby improving the construction quality of the prefabricated concrete composite floor slab. It is applicable to prefabricated concrete composite floor slab structures.

Claims

1. A fabricated concrete composite floor structure comprising: A precast slab (1) and a cast-in-place concrete layer (2), wherein the precast slab (1) has a cast-in-place concrete layer (2) poured on its upper end, characterized in that: The precast slab (1) is symmetrically provided with a first component (3) and a second component (4) on its left and right sides. The first component (3) and the second component (4) have filling cavities (42) on their side faces. The filling cavities (42) are filled with an impermeable filler layer (5). The first component (3) and the second component (4) are bonded and fixed to the side faces of the precast slab (1) through the impermeable filler layer (5). The side faces of the first component (3) and the second component (4) are spliced ​​to each other through an arc-shaped splicing surface (31). The upper surface of the precast slab (1) is combined with the cast-in-place concrete layer (2) through a polypropylene fiber mesh (6).

2. The prefabricated concrete composite floor slab structure according to claim 1, characterized in that, The precast slab (1) is provided with an extension steel bar (11) through the left and right ends, and the extension steel bar (11) is inserted into the steel bar hole (43) located on the side wall of the first component (3) and the second component (4).

3. The prefabricated concrete composite floor slab structure according to claim 1, characterized in that, The upper end of the precast slab (1) is connected to the cast-in-place concrete layer (2) by a triangular reinforcing bar (12), and a positioning pin (13) is embedded and fixed on the upper surface of the precast slab (1).

4. The prefabricated concrete composite floor slab structure according to claim 3, characterized in that, The upper surface of the precast slab (1) is covered with a polypropylene fiber mesh (6) by means of a positioning pin (13).

5. The prefabricated concrete composite floor slab structure according to claim 1, characterized in that, The first component (3) and the second component (4) have filling holes (44) on their upper slope surfaces; and the filling holes (44) are connected to the filling cavity (42).

6. The prefabricated concrete composite floor slab structure according to claim 1, characterized in that, The filling cavity (42) has a steel bar hole (43) and a fixing hole (32) in its cavity wall; and a bolt is connected in the fixing hole (32).

7. The prefabricated concrete composite floor slab structure according to claim 1, characterized in that, A sealing strip (41) is bonded to the outer edge of the cavity wall of the filling cavity (42), and the filling cavity (42) is in the shape of an L-shaped groove.

8. The prefabricated concrete composite floor slab structure according to claim 1, characterized in that, The arc-shaped splicing surface (31) is S-shaped, and the cast-in-place concrete layer (2) is cast and bonded to the slope of the first component (3) and the second component (4).

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