Bridge pile cap and pile foundation connecting structure

Abstract

The utility model discloses a bridge bent cap and pile foundation connecting structure, it includes setting at the bottom of road two symmetries of abutment, the bottom of road is fixedly connected with two symmetries of bent cap through support, the bottom of two bent cap all is provided with bent cap, the bottom fixedly connected with pile foundation of bent cap, the soil inner chamber of the soil in the bottom of water is implanted to pile foundation, the inner chamber of bent cap is provided with a plurality of support rib, the surface fixedly connected with a plurality of first horizontal stirrup of four support rib in rear side, the surface fixedly connected with second horizontal stirrup of four support rib in front side, the bottom fixedly connected with two symmetries of lower steel mesh of a plurality of support rib. The utility model discloses bent cap, pier, bent cap and the cooperation of pile foundation, to the road surface played the support foundation, through the cooperation of support rib, first horizontal stirrup and upper steel mesh, the inside of bent cap is reinforced, guarantees bent cap and bottom pile foundation connection more firm.

Description

Technical Field

[0001] This utility model belongs to the field of bridge steel structure construction technology, and in particular relates to a bridge abutment and pile foundation connection structure. Background Technology

[0002] A pile cap is a concrete platform-shaped component that connects the pile foundation and the pier. It bears the responsibility of load transfer and enhances the overall stability of the pile foundation. The pile foundation is a columnar load-bearing component that penetrates deep into the ground. It transfers the bridge load to the deep stable soil layer through friction with the ground or end bearing force. Together, they constitute the core foundation system of the bridge substructure.

[0003] In bridge engineering, the connection between the abutment and the pile foundation is a crucial link in the transmission of loads in the substructure. It must effectively bear the load from the superstructure and stably transfer it to the foundation. The connection performance between the abutment and the pile foundation directly affects the overall load-bearing capacity, deformation resistance, and long-term service stability of the bridge. Therefore, it is necessary to design a bridge abutment and pile foundation connection structure to reinforce the connection between the abutment and the pile foundation, improve the bridge's load-bearing and deformation resistance, enhance the reliability of the substructure under stress, ensure the long-term service stability of the bridge, reduce maintenance costs, and provide a solid support for the safe, durable, and continuous operation of the bridge. Utility Model Content

[0004] The purpose of this utility model is to provide a bridge abutment and pile foundation connection structure that has the advantages of improving the bridge's load-bearing and deformation resistance, enhancing the reliability of the substructure under stress, ensuring the long-term stability of the bridge, reducing maintenance costs, and providing key support for the safe, durable and continuous operation of the bridge, so as to solve the above-mentioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A bridge abutment and pile foundation connection structure includes two symmetrical abutments set at the bottom of the road surface. Two symmetrical cap beams are fixedly connected to the bottom of the road surface through supports. Abutments are set at the bottom of each of the two cap beams. A pile foundation is fixedly connected to the bottom of the abutment. The pile foundation is implanted into the soil cavity at the bottom of the water. Multiple supporting bars are set in the cavity of the abutment. Multiple first horizontal stirrups are fixedly connected to the surface of the four supporting bars located on the rear side. Second horizontal stirrups are fixedly connected to the surface of the four supporting bars located on the front side. Two symmetrical lower steel meshes are fixedly connected to the bottom of the multiple supporting bars. Two symmetrical upper steel meshes are fixedly connected to the top of the multiple supporting bars.

[0006] Preferably, piers are installed at the bottom of both cap beams, and the bottom of the piers is fixedly connected to the top of the abutment.

[0007] Preferably, a plurality of tie bars are fixedly connected to the surface of the four supporting bars located in the middle, and the tie bars are located above the first horizontal stirrup and the second horizontal stirrup.

[0008] Preferably, the top of each of the two lower steel meshes is fixedly connected with a plurality of reinforcing ribs, and the top of the plurality of reinforcing ribs is fixedly connected to the bottom of the upper steel mesh.

[0009] Preferably, the inner cavity of the tie bar is provided with a first diagonal brace, the top of the first diagonal brace is provided with a second diagonal brace, and the two ends of the first diagonal brace and the second diagonal brace are fixedly connected to the middle support bar.

[0010] The beneficial effects of this utility model are: 1. This utility model provides a supporting foundation for the road surface through the combined use of cap beams, piers, abutments, and pile foundations. By using supporting bars, first horizontal stirrups, and upper steel mesh, the interior of the abutment is reinforced, ensuring a more solid connection between the abutment and the bottom pile foundation. This achieves the purpose of improving the bridge's load-bearing and deformation resistance, enhancing the reliability of the substructure under stress, ensuring the long-term stability of the bridge, reducing maintenance costs, and providing key support for the safe, durable, and continuous operation of the bridge. 2. By setting up tie bars, this utility model can enhance the overall connection and cooperative force-bearing capacity between the first horizontal stirrup and the second horizontal stirrup, transmit tensile force, limit the relative displacement of the first horizontal stirrup and the second horizontal stirrup, improve the crack resistance performance of the pile cap at the top of the pile foundation, reduce the generation of cracks in the pile cap, and stabilize the load-bearing system of the pile cap. 3. By setting up reinforcing ribs, the reinforcing ribs play a supporting role between the second diagonal brace and the upper steel mesh, ensuring that the upper steel mesh will not sink on top of the lower steel mesh, thus improving the stability of the upper steel mesh in the inner cavity of the bearing platform. Attached Figure Description

[0011] The advantages of the present invention, as described above and / or in the following detailed description in conjunction with the accompanying drawings, will become clearer and more readily understood. These drawings are merely illustrative and do not limit the scope of the present invention. Figure 1 This is a front view schematic diagram of one embodiment of the present utility model; Figure 2 This is a three-dimensional schematic diagram of the foundation and supporting ribs according to an embodiment of the present utility model; Figure 3 This is a three-dimensional schematic diagram of a first and second diagonal bracing rib of one embodiment of the present utility model; Figure 4 This is a three-dimensional schematic diagram of the first horizontal stirrup and tie bar in one embodiment of the present invention.

[0012] The attached diagram lists the components represented by each number as follows: 1. Road surface, 2. Bridge abutment, 3. Cap beam, 4. Bridge pier, 5. Pier cap, 6. Pile foundation, 7. Support reinforcement, 8. First horizontal stirrup, 9. Second horizontal stirrup, 10. Tie bar, 11. Lower steel mesh, 12. Reinforcing bar, 13. Diagonal bracing bar one, 14. Diagonal bracing bar two, 15. Upper steel mesh. Detailed Implementation

[0013] In the following description, embodiments of the bridge abutment and pile foundation connection structure of the present invention will be described with reference to the accompanying drawings.

[0014] Figure 1-4 This invention illustrates a bridge abutment and pile foundation connection structure according to an embodiment of the present invention. It includes two symmetrical abutments 2 located at the bottom of a road surface 1. Two symmetrical cap beams 3 are fixedly connected to the bottom of the road surface 1 via supports. Piers 4 are installed at the bottom of each cap beam 3, and the bottom of the piers 4 is fixedly connected to the top of the abutment 5. A pile foundation 6 is fixedly connected to the bottom of each cap beam 3. The pile foundation 6 is embedded in the soil cavity at the bottom of the water level. Multiple supporting reinforcement bars 7 are provided within the cavity of the abutment 5. Multiple first horizontal stirrups 8 are fixedly connected to the surfaces of the four rear supporting reinforcement bars 7, and second horizontal stirrups 9 are fixedly connected to the surfaces of the four front supporting reinforcement bars 7. Multiple tie bars 10 are fixedly connected to the surfaces of the four middle supporting reinforcement bars 7. The tie bars 10 are located above the first horizontal stirrups 8 and the second horizontal stirrups 9. Through the arrangement of the tie bars 10, the tie bars 10 can enhance the overall connection and synergistic effect between the first horizontal stirrups 8 and the second horizontal stirrups 9. The structure has the ability to transmit tensile force, limit the relative displacement of the first horizontal stirrup 8 and the second horizontal stirrup 9, improve the crack resistance of the pile cap 5 at the top of the pile foundation 6, reduce the occurrence of cracks in the pile cap 5, and stabilize the load-bearing system of the pile cap 5. The bottom of multiple supporting bars 7 is fixedly connected to two symmetrical lower steel meshes 11, and the top of each of the two lower steel meshes 11 is fixedly connected to multiple reinforcing bars 12. The top of the multiple reinforcing bars 12 is fixedly connected to the bottom of the upper steel mesh 15. Through the setting of the reinforcing bars 12, the reinforcing bars 12... The diagonal bracing rib 14 and the upper steel mesh 15 provide support, ensuring that the upper steel mesh 15 will not sink on top of the lower steel mesh 11, thus improving the stability of the upper steel mesh 15 within the cavity of the bearing platform 5. The inner cavity of the tie bar 10 is provided with diagonal bracing rib 13, and the top of diagonal bracing rib 13 is provided with diagonal bracing rib 24. The two ends of diagonal bracing rib 13 and diagonal bracing rib 24 are fixedly connected to the middle support rib 7. The tops of the multiple support ribs 7 are fixedly connected to two symmetrical upper steel meshes 15.

[0015] Working Principle: During construction, the pile foundation 6 is first implanted to ensure it reaches the stable soil layer at the bottom of the water column. Then, the pile cap 5 is poured. Inside the pile cap 5, a steel reinforcement system is installed, consisting of support bars 7, first horizontal stirrups 8, second horizontal stirrups 9, tie bars 10, lower steel mesh 11, reinforcing bars 12, diagonal bracing bars 13, diagonal bracing bars 14, and upper steel mesh 15. The support bars 7 serve as the main framework. The first and second horizontal stirrups 8 and 9 provide horizontal restraint to the support bars 7 on the front and rear sides, respectively. The tie bars 10 connect the middle support bars 7, enhancing the synergistic force distribution between the horizontal stirrups. The lower and upper steel mesh 11... 5. A mesh reinforcement is formed at the bottom and top respectively. The reinforcing bar 12 connects the upper and lower steel mesh. The first diagonal bracing bar 13 and the second diagonal bracing bar 14 form diagonal support in the inner cavity of the tie bar 10. After the foundation 5 is poured, the pier 4 is constructed on its top. The cap beam 3 is installed on the top of the pier 4. The cap beam 3 is connected to the road surface 1 through the support. At the same time, the bottom of the road surface 1 is set with symmetrical abutments 2 for auxiliary support. In the whole structure, the pile foundation 6 provides the foundation bearing capacity. The foundation 5 is firmly connected to the pile foundation 6 through the internal reinforcing steel system, which stably transfers the upper structure such as the road surface 1 to the foundation. The cap beam 3 and the pier 4 play the intermediate role of structural support. The abutments 2 help to enhance the overall stability.

[0016] In summary, the bridge abutment and pile foundation connection structure, through the combined use of cap beam 3, pier 4, abutment 5, and pile foundation 6, provides a supporting foundation for the road surface 1. The combined use of support reinforcement 7, first horizontal stirrups 8, and upper steel mesh 15 reinforces the interior of abutment 5, ensuring a more robust connection between abutment 5 and the bottom pile foundation 6. This achieves the goals of improving the bridge's load-bearing and deformation resistance, enhancing the reliability of the substructure, ensuring long-term stable service, reducing maintenance costs, and providing crucial support for the bridge's safe, durable, and continuous operation.

Claims

1. A bridge abutment and pile foundation connection structure, characterized in that, The bridge includes two symmetrical abutments (2) set at the bottom of the road surface (1). The bottom of the road surface (1) is fixedly connected to two symmetrical cap beams (3) by supports. The bottom of each cap beam (3) is provided with a pile cap (5). The bottom of the pile cap (5) is fixedly connected to a pile foundation (6). The pile foundation (6) is implanted into the soil cavity at the bottom of the water. The cavity of the pile cap (5) is provided with multiple support bars (7). The surface of the four support bars (7) located on the rear side is fixedly connected to multiple first horizontal stirrups (8). The surface of the four support bars (7) located on the front side is fixedly connected to second horizontal stirrups (9). The bottom of the multiple support bars (7) is fixedly connected to two symmetrical lower steel meshes (11). The top of the multiple support bars (7) is fixedly connected to two symmetrical upper steel meshes (15).

2. The bridge abutment and pile foundation connection structure according to claim 1, characterized in that, Both of the cap beams (3) are fitted with piers (4) at their bottoms, and the bottoms of the piers (4) are fixedly connected to the top of the abutment (5).

3. The bridge abutment and pile foundation connection structure according to claim 2, characterized in that, Multiple tie bars (10) are fixedly connected to the surfaces of the four supporting bars (7) in the middle, and the tie bars (10) are located above the first horizontal stirrup (8) and the second horizontal stirrup (9).

4. The bridge abutment and pile foundation connection structure according to claim 3, characterized in that, The top of each of the two lower steel meshes (11) is fixedly connected with a plurality of reinforcing ribs (12), and the top of the plurality of reinforcing ribs (12) is fixedly connected to the bottom of the upper steel mesh (15).

5. The bridge abutment and pile foundation connection structure according to claim 4, characterized in that, The inner cavity of the tie bar (10) is provided with a first diagonal brace (13), and the top of the first diagonal brace (13) is provided with a second diagonal brace (14). The two ends of the first diagonal brace (13) and the second diagonal brace (14) are fixedly connected to the middle support bar (7).

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