A composite panel splicing structure

Abstract

This utility model discloses a composite slab joint structure, including precast slabs, cast-in-place layers, and strip joints fixedly connected at the top and bottom; it also includes a template, tie bars, and a reinforcing structure; the template is located below the strip joint; multiple tie bars are arranged and connected between two adjacent precast slabs; the reinforcing structure includes several fixed piles on adjacent precast slabs, the fixed piles extending to the cast-in-place layer, each fixed pile having a square steel block, and a fixed steel plate supporting opposite square steel blocks; a threaded rod is threaded between the fixed steel plate and the template, with wing nuts threaded to both ends of the threaded rod. This utility model uses the reinforcing structure to hoist the template used to support concrete in the strip joint, making its connection with the precast slab more stable, reducing gaps, and thus reducing grout leakage.

Description

Technical Field

[0001] This utility model relates to the field of building technology, specifically to a composite panel splicing structure. Background Technology

[0002] Composite slabs are prefabricated monolithic floor slabs made by combining precast slabs and cast-in-place reinforced concrete. The precast slabs are both part of the floor slab structure and serve as permanent formwork for the cast-in-place layer, where horizontal equipment pipelines can be laid. During the hoisting and assembly of composite slabs on the construction site, there is always a 10mm through gap between the precast composite slabs. The most common type of joint in composite slabs is the horizontal joint, which mainly occurs at the horizontal splicing points of the composite slabs.

[0003] Improper joint treatment can lead to insufficient tightness between composite slabs, affecting the overall structural performance and reducing the structure's load-bearing capacity and seismic resistance. Inadequate waterproofing at the joints can easily cause leakage, affecting the building's usability. Current technology uses cast-in-place concrete to seal the joints of composite slabs, ensuring structural stability. However, due to technological limitations, this joint is prone to grout leakage during construction, resulting in a poor appearance after demolding and requiring post-construction treatment, increasing subsequent costs. Therefore, there is room for technological improvement. Utility Model Content

[0004] This utility model aims to solve the above-mentioned technical problems of easy grout leakage during the construction of composite slab joints and poor appearance after demolding, and provides a composite slab joint structure.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a composite slab joint structure, comprising precast slabs and cast-in-place layers fixedly connected at the top and bottom, wherein the precast slabs are provided with a plurality of steel trusses; a strip joint is formed between two adjacent sets of precast slabs and cast-in-place layers; the steel trusses include one upper chord bar near the upper side and two lower chord bars near the lower side, and S-shaped bars are provided between the upper chord bar and each lower chord bar; further comprising:

[0006] Template; located below the seam; the top surface of the template and near both ends are connected to the corresponding precast slabs respectively;

[0007] Tie bars; multiple bars are provided and arranged to connect between two adjacent precast slabs;

[0008] The reinforcement structure includes several fixed piles on adjacent precast slabs, the fixed piles being able to extend into the cast-in-place layer, each fixed pile having a square steel block, and a fixed steel plate being supported on opposite square steel blocks; the fixed steel plate and the template are threadedly connected by a screw rod, and both ends of the screw rod are threadedly connected with a wing nut.

[0009] Furthermore, the upper ends of the upper chord rib and the S-rib extend out of the precast slab.

[0010] Furthermore, the top surface of the template and near both ends are provided with sealing strips.

[0011] Furthermore, the two ends of the tie bar are respectively tied to the upper chord bar on the corresponding precast slab.

[0012] Furthermore, the template is provided with wooden strips below and near both sides, and several horizontal strips are fixedly connected across the wooden strips; the lower end of the screw extends out with horizontal strips.

[0013] Furthermore, the portion of the screw located within the slot is wrapped with transparent tape.

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] By reinforcing the structure, the formwork used to support the concrete in the joints is hoisted, making the connection between it and the precast slab more stable, reducing gaps, and thus reducing grout leakage;

[0016] The installation of tie bars improves the stability between adjacent precast slabs, thereby further enhancing the stability of the joints after grouting. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is an exploded view of this utility model.

[0019] Figure 3 This is a schematic diagram of the precast slab and steel truss structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the reinforcement structure of this utility model.

[0021] As shown in the figure: 1. Precast slab, 2. Cast-in-place layer, 3. Steel truss, 4. Top chord bar, 5. Bottom chord bar, 6. S-bar, 7. Strip joint, 8. Formwork, 9. Sealing strip, 10. Tie bar, 11. Fixing pile, 12. Square steel block, 13. Fixing steel plate, 14. Screw rod, 15. Wing nut, 16. Wooden strip, 17. Horizontal bar. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings.

[0023] Example 1, in conjunction with Appendix Figure 1 , 2 A composite slab joint structure includes a precast slab 1 and a cast-in-place layer 2 fixedly connected at the top and bottom, with a strip joint 7 formed between two adjacent sets of precast slabs 1 and cast-in-place layers 2; the cast-in-place layer 2 is where concrete is poured on the precast slab 1.

[0024] Combined with appendix Figure 2 ,3 The precast slab 1 is provided with several steel trusses 3; the steel trusses 3 include an upper chord 4 near the top and two lower chord 5 near the bottom, and S-bars 6 are provided between the upper chord 4 and each lower chord 5; the upper ends of the upper chord 4 and S-bars 6 extend out of the precast slab 1; the steel trusses 3 are used to improve the structural strength of the precast slab 1.

[0025] Combined with appendix Figure 1 , 2 4. It also includes a template 8; located below the joint 7, it is used to form a seal at the lower end of the joint 7 to facilitate grouting; the top surface of the template 8 and near both ends are connected to the corresponding precast slab 1 respectively, and the top surface of the template 8 and near both ends are provided with sealing strips 9. The sealing strips 9 can improve the sealing between the template 8 and the joint 7 and further reduce grout leakage.

[0026] Combined with appendix Figure 2 It also includes tie bars 10; multiple tie bars are provided and arranged between two adjacent precast slabs 1; the two ends of the tie bars 10 are respectively tied to the upper chord bars 4 on the corresponding precast slab 1; the tie bars 10 can improve the stability between adjacent precast slabs 1, thereby further improving the stability of the joint 7 after grouting.

[0027] Combined with appendix Figure 1 , 2 3, 4, also include a reinforcement structure; including several fixed piles 11 provided on adjacent precast slabs 1, the fixed piles 11 can extend to the cast-in-place layer 2, each fixed pile 11 is provided with a square steel block 12, and a fixed steel plate 13 is jointly supported on the opposite square steel block 12.

[0028] Based on the above structure, a screw rod 14 is threadedly connected between the fixed steel plate 13 and the template 8, and both ends of the screw rod 14 are threadedly connected with wing nuts 15; wooden strips 16 are provided below the template 8 and near both sides, and several horizontal strips 17 are fixedly connected across the wooden strips 16; the lower end of the screw rod 14 extends out of the horizontal strips 17; the screw rod 14 passes through the fixed steel plate 13, the template 8, and the horizontal strips 17 in sequence and is locked by the wing nuts 15, which further improves the stability of the template 8 and makes it less prone to grout leakage; the addition of wooden strips 16 can evenly distribute the force at the horizontal strips 17 to the two precast slabs 1;

[0029] In addition, the portion of the screw 14 located inside the slot 7 is wrapped with transparent tape to reduce the bond strength with the grout, making it easier to remove the fixed structure after the slot 7 has been grouted and formed.

[0030] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A composite slab joint structure, comprising precast slabs (1) and cast-in-place layers (2) fixedly connected vertically, wherein the precast slabs (1) are provided with a plurality of steel trusses (3); a strip joint (7) is formed between two adjacent sets of precast slabs (1) and cast-in-place layers (2); characterized in that: The steel truss (3) includes one upper chord bar (4) near the top and two lower chord bars (5) near the bottom, with S-shaped bars (6) provided between the upper chord bar (4) and each lower chord bar (5); it also includes: Template (8); located below the seam (7); the top surface of the template (8) and near both ends are connected to the corresponding precast slab (1); Tie bars (10); multiple ones are provided and arranged to connect between two adjacent precast slabs (1); The reinforcement structure includes several fixed piles (11) on adjacent precast slabs (1), the fixed piles (11) can extend to the cast-in-place layer (2), each fixed pile (11) is provided with a square steel block (12), and a fixed steel plate (13) is jointly supported on the opposite square steel block (12); the fixed steel plate (13) and the template (8) are threadedly connected by a screw (14), and both ends of the screw (14) are threadedly connected with a wing nut (15).

2. The composite panel joint structure according to claim 1, characterized in that: The upper ends of the upper chord (4) and S-rib (6) extend out of the precast slab (1).

3. The composite panel joint structure according to claim 1, characterized in that: The top surface of the template (8) and near both ends are provided with sealing strips (9).

4. The composite panel joint structure according to claim 1, characterized in that: The two ends of the tie bar (10) are respectively tied to the upper chord bar (4) on the corresponding precast slab (1).

5. The composite panel joint structure according to claim 1, characterized in that: The template (8) is provided with wooden strips (16) on the bottom and near both sides, and several horizontal strips (17) are fixed across the wooden strips (16); the lower end of the screw (14) extends out of the horizontal strips (17).

6. The composite panel joint structure according to claim 1, characterized in that: The portion of the screw (14) located within the slot (7) is wrapped with transparent tape.

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