Prefabricated pavement slab quick connecting structure suitable for pile slab roadbed structure

Abstract

The utility model relates to a prefabricated pavement slab quick connecting structure suitable for a pile slab roadbed structure, which comprises prefabricated pavement slabs provided with an upper layer of prefabricated steel plate and a lower layer of prefabricated steel plate, a cover beam reserved with limiting shear steel nails, a concrete slab strip and steel tie bars, a gap is reserved between every two adjacent prefabricated pavement slabs, the gaps are filled with the concrete slab strips, the adjacent prefabricated pavement slabs are connected through steel tie bars, the prefabricated pavement slabs are connected with the bent cap through limiting shear force steel nails, and after all the prefabricated parts are connected, the bent cap is connected with the concrete slab strips through the limiting shear force steel nails. And concrete is poured between the adjacent prefabricated road plates to form a concrete plate strip. Compared with a connecting device of a traditional pile plate roadbed structure pavement slab, the connecting device is simple in structure, convenient to construct and high in assembly degree, the upper pavement slab and the lower pile column structure are well connected into a whole through the steel tie bars, the limiting shear force steel nails and post-pouring concrete, rapid connection of pile plates is achieved, rigidity is high, and the connecting device is suitable for large-scale popularization and application. And construction requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of pile-slab roadbed technology, and more specifically, to a quick connection structure for prefabricated road panels suitable for pile-slab roadbed structures. Background Technology

[0002] The development of prefabricated pile-slab roadbed structures in my country's highway construction field is becoming increasingly mature. This structure is mainly composed of precast pipe piles, precast slabs, and pile-slab joints. Compared with traditional roadbeds, pile-slab roadbed structures have greater rigidity, eliminate the need for slope protection, save land acquisition area, have a higher degree of prefabrication, shorter construction period, lower cost, and better roadbed settlement control. Under the background of advocating green construction in my country, it has good application prospects.

[0003] Traditional methods of connecting pipe piles and precast slabs using cap beams and supports have many limitations, such as complex temporary works, high labor intensity, high construction technical challenges, limited industrialization levels, and difficulty in guaranteeing connection efficiency. Therefore, this invention provides a rapid connection structure for precast pavement panels suitable for pile-slab roadbed structures, aiming to offer a more reliable and efficient connection solution and further promote the integration and prefabrication of pile-slab roadbed structures. Utility Model Content

[0004] The purpose of this invention is to provide a quick connection structure for prefabricated road panels suitable for pile-slab roadbed structures, so as to solve the above-mentioned problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A quick-connection structure for precast pavement panels suitable for pile-slab roadbeds includes a precast pavement panel with upper and lower layers of precast steel plates, a cap beam with pre-reserved limiting shear studs, a concrete strip, and tie bars. The upper precast steel plate of the pavement panel has one end extending outward and the other end embedded in the pavement panel. It has a first channel on one side for bending and connecting the tie bars, and a second channel on the other side for bending and connecting the longitudinal bars in the precast pavement panel. The lower precast steel plate of the pavement panel is completely embedded in the pavement panel. It has a second channel on one side for bending and connecting the longitudinal bars in the precast pavement panel, and a third channel with multiple rows of limiting shear studs passing through on the other side.

[0007] Preferably, the precast pavement panel is convex in shape, with a rectangular lower end that embeds the lower precast steel plate within it, and a trapezoidal upper end with a gradually decreasing cross-section that extends the upper precast steel plate outward.

[0008] Preferably, the length ratio of the upper and lower precast steel plates is 1:2, and the two steel plates are aligned with the ends of the longitudinal reinforcing bars of the precast pavement panel.

[0009] Preferably, both the upper and lower precast steel plates are pre-bent and connected to the longitudinal reinforcing bars in the precast pavement panel and precast in the pavement panel.

[0010] Preferably, the limiting shear studs are prefabricated in the cap beam.

[0011] Preferably, adjacent precast pavement panels are connected by the tie bars bent in the first duct.

[0012] Preferably, the precast pavement panel and the cap beam are fixedly connected by limiting shear steel nails passing through the third channel.

[0013] Preferably, the concrete slab strip is formed by post-pouring between adjacent precast pavement panels after the installation of the adjacent precast pavement panels.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The structure is mostly prefabricated and highly assembled, which can greatly reduce construction difficulty, shorten the construction period, and save costs.

[0016] 2. By connecting the tie bars to the upper layer of precast steel plates of the precast pavement slab through bending, the upper bending resistance is provided at the connection node of the pavement slab, so that the adjacent pavement slabs are connected as a whole, and the stress at the node is more reasonable.

[0017] 3. By using pre-reserved shear steel nails on the cap beam and a lower steel plate embedded in the precast pavement slab, the connection rigidity between the pavement slab and the cap beam is enhanced, making the pavement slab and the lower pile column structure an integral whole.

[0018] Compared with the traditional pavement slab roadbed structure pavement panel connection device, this utility model has a simple structure, is easy to construct, and has a high degree of assembly. It connects the upper pavement panel and the lower pile column structure into a whole through tie bars, limiting shear nails and post-poured concrete, so as to achieve rapid connection of pile slab with high rigidity and meet construction requirements. Attached Figure Description

[0019] Figure 1 This is an overall structural diagram of the pile-slab connection device of this utility model;

[0020] Figure 2 This is an overall structural diagram of the precast pavement panel of the pile-slab connection device of this utility model.

[0021] The components include: 1. Precast pavement panels; 2. Upper precast steel plates; 3. Lower precast steel plates; 4. Shear studs for limiting the load; 5. Tie bars; 6. Cap beams; 7. Columns; 8. Longitudinal reinforcement; 9. Transverse reinforcement; 10. Concrete slab strips. Detailed Implementation

[0022] 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.

[0023] A quick-connection structure for precast pavement panels suitable for pile-slab roadbed structures, as shown in the figure, includes a precast pavement panel 1 with upper and lower layers of precast steel plates, a cap beam 6 with reserved limiting shear steel nails, a post-cast concrete strip 10, and tie bars 5. The upper precast steel plate 2 of the precast pavement panel extends outward at one end and is embedded in the pavement panel at the other end. It has a first channel (not shown in the figure) on one side for bending and connecting the tie bars 5, and a second channel (not shown in the figure) on the other side for bending and connecting the longitudinal steel bars 8 in the precast pavement panel. The lower precast steel plate 3 of the precast pavement panel is completely embedded in the precast pavement panel 1. It has a second channel (not shown in the figure) on one side for bending and connecting the longitudinal steel bars 8 in the precast pavement panel, and a third channel (not shown in the figure) with multiple rows of limiting shear steel nails 4 passing through on the other side.

[0024] The precast pavement panel 1 is convex in shape, with a rectangular lower end that allows the lower precast steel plate 3 to be embedded within it. The upper side is trapezoidal with a gradually decreasing cross-section, allowing the upper precast steel plate 2 to extend outward and connect with the tie bar 5. The length ratio of the upper and lower precast steel plates is 1:2. The ends of the two steel plates are aligned with the longitudinal reinforcement 8 of the precast pavement panel. Both the upper and lower precast steel plates are pre-bent and connected to the longitudinal reinforcement 8 in the precast pavement panel and precast in the pavement panel 1. The limiting shear steel nails 4 are precast in the cap beam 6. Adjacent precast pavement panels are connected by the tie bar 5 through the first channel. The precast pavement panel 1 and the cap beam 6 are fixedly connected by the limiting shear steel nails 4 passing through the third channel. The concrete strip 10 is formed by post-pouring between adjacent precast pavement panels after their installation is completed.

[0025] The pavement panel connection method in this embodiment has the following advantages: 1. The structure is mostly prefabricated, with a high degree of assembly, which can significantly reduce construction difficulty, shorten the construction period, and save costs. 2. By connecting the tie bars to the upper prefabricated steel plate of the prefabricated pavement panel through bending, the upper bending resistance is provided at the pavement panel connection node, making adjacent prefabricated pavement panels a whole, and the stress at the node is more reasonable. 3. By connecting the limiting shear steel nails reserved on the cap beam and the lower steel plate embedded in the prefabricated pavement panel, the connection rigidity between the pavement panel and the cap beam is enhanced, making the pavement panel and the lower pile column structure a whole. Compared with the traditional pavement panel connection device of pile-slab roadbed structure, this utility model has a simple structure, is convenient to construct, has a high degree of assembly, and effectively connects the upper pavement panel and the lower pile column structure into a whole through tie bars, limiting shear steel nails, and post-poured concrete, so as to achieve rapid connection of pile and slab with high rigidity and meet construction requirements.

[0026] The construction process is as follows: According to the design requirements, a precast pavement panel 1 with upper and lower precast steel plates is made. When the lower pile column is constructed, a limiting shear nail 4 is reserved at the designated position of the cap beam 6 to connect with the third hole of the precast pavement panel. After the precast component is made, the precast pavement panel 1 is hoisted onto the designated cap beam 6, and the limiting shear nail 4 reserved on the cap beam passes through the third hole of the precast pavement panel 1 to temporarily fix and limit the pavement panel. Then, the two ends of the tie steel bar 5 are bent and inserted into the first hole of the upper steel plate 2 of the adjacent precast pavement panel to connect the adjacent pavement panels. Finally, transverse steel bars are arranged in the middle of the adjacent precast pavement panels according to the design requirements and concrete is poured to form a concrete strip 10.

Claims

1. A quick-connection structure for precast pavement panels suitable for pile-slab roadbed structures, characterized in that: The system includes a precast pavement panel with two layers of precast steel plates, a cap beam with pre-reserved shear studs, a concrete strip, and reinforcing bars. The upper precast steel plate of the pavement panel extends outward at one end and is embedded in the pavement panel at the other end. It has a first channel on one side for bending and connecting the reinforcing bars, and a second channel on the other side for bending and connecting the longitudinal reinforcing bars in the pavement panel. The lower precast steel plate of the pavement panel is completely embedded in the pavement panel. It has a second channel on one side for bending and connecting the longitudinal reinforcing bars in the pavement panel, and a third channel with multiple rows of shear studs passing through it on the other side.

2. The quick connection structure for precast pavement panels suitable for pile-slab roadbed structures according to claim 1, characterized in that: The precast pavement panel is convex in shape, with a rectangular lower end that embeds the lower precast steel plate within it, and a trapezoidal upper end with a gradually decreasing cross-section that extends the upper precast steel plate outwards.

3. The quick connection structure for precast pavement panels suitable for pile-slab roadbed structures according to claim 1, characterized in that: The length ratio of the upper and lower precast steel plates is 1:2, and the two steel plates are aligned with the ends of the longitudinal steel bars of the precast pavement panel.

4. The quick connection structure for precast pavement panels suitable for pile-slab roadbed structures according to claim 1, characterized in that: Both the upper and lower precast steel plates are pre-bent and connected to the longitudinal reinforcing bars in the precast pavement panel and precast in the pavement panel.

5. A quick connection structure for precast pavement panels suitable for pile-slab roadbed structures according to claim 1, characterized in that: The limiting shear studs are prefabricated in the cap beam.

6. The quick connection structure for precast pavement panels suitable for pile-slab roadbed structures according to claim 1, characterized in that: The adjacent precast pavement panels are connected by the tie bars bent in the first duct.

7. A quick connection structure for precast pavement panels suitable for pile-slab roadbed structures according to claim 1, characterized in that: The precast pavement panel and the cap beam are fixedly connected by limiting shear steel nails passing through the third channel.

8. A quick connection structure for precast pavement panels suitable for pile-slab roadbed structures according to claim 1, characterized in that: The concrete slab strip is formed by post-pouring between adjacent precast pavement panels after the installation of the adjacent precast pavement panels.

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