Pipe pile and bearing platform connecting structure
By introducing steel cages and stops into the connecting structure of the pipe piles and the support, the problem of the pipe piles being accidentally pulled out of the pipe piles when the loading concrete is subjected to tension, which significantly improves the tension resistance.
Patent Information
- Application Number
- CN202421831346.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-30
AI Technical Summary
When the existing connecting structure of the pipe pile and the support platform is subjected to a large upward tension, the adhesion between the core-filled concrete and the pipe pile is easily damaged, resulting in the core-filled concrete being accidentally pulled out of the pipe pile, and the pull-resistant performance is poor.
The steel cage structure is adopted, the bottom is inserted into the pipe pile, the top is cast in the support platform, the core pouring concrete is poured into the pipe pile, and a stop is arranged on the top of the pipe pile to prevent the core pouring concrete from moving out.
Through the design of the stop, the core-filled concrete is effectively prevented from being accidentally pulled out of the pipe pile when subjected to the pulling force, which improves the tensile resistance of the pipe pile and the bearing table.
Smart Images
Figure CN222796496U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of pipe pile construction, and in particular to a pipe pile and cap connection structure. Background Art
[0002] Prestressed reinforced concrete pipe piles have been widely used in recent years because of their advantages such as stable quality, high pile body strength, high single pile bearing capacity, low cost, short construction period and easy quality assurance.
[0003] Conventional pipe piles and capping connections are constructed using reinforced concrete core pouring. In order to ensure that there is sufficient friction between the core pouring concrete and the inner wall of the pipe pile, the core pouring length must be more than 2.5m, and the construction quality is difficult to guarantee.
[0004] When the foundation is subjected to a large upward pulling force, the adhesion between the core concrete and the pipe piles will be destroyed, causing the core concrete to be accidentally pulled out of the pipe piles, which is an obvious drawback. Utility Model Content
[0005] In order to improve the problem that the core-cast concrete may be pulled out of the pipe pile due to its poor tensile strength, the present application provides a pipe pile and a cap connection structure.
[0006] The present application provides a pipe pile and abutment connection structure that adopts the following technical solution:
[0007] A pipe pile and pedestal connection structure includes a steel cage with a bottom inserted into the pipe pile and a top cast in the pedestal, core concrete is cast in the pipe pile at a position relative to the steel cage, and a stopper is arranged on the top of the pipe pile to prevent the core concrete from moving out of the pipe pile, and the stopper is cast in the pedestal.
[0008] By adopting the above technical solution, since the baffle is arranged at the top of the pipe pile, when the core concrete is subjected to a pulling force, the baffle can prevent the core concrete from moving out of the pipe pile, thereby reducing the possibility of the core concrete being accidentally pulled out of the pipe pile and improving the pull-out resistance of the pipe pile and the pedestal.
[0009] Optionally, a plurality of protruding teeth are axially arranged on the inner wall of the pipe pile.
[0010] By adopting the above technical solution, after the core-casting concrete is solidified and formed, the core-casting concrete and the convex teeth on the inner wall of the pipe pile cooperate with each other, further reducing the possibility of the core-casting concrete being accidentally pulled out of the pipe pile.
[0011] Optionally, an end plate is arranged on the top of the pipe pile, and the stopper is arranged on the end plate.
[0012] By adopting the above technical solution, the arrangement of the end plate provides a stable installation base for the stopper to be installed on the top of the pipe pile.
[0013] Optionally, a plurality of prestressed steel rods are pre-embedded in the circumferential direction of the side wall of the pipe pile, and the end plate is threadedly connected to the prestressed steel rods via tension bolts.
[0014] By adopting the above technical solution, workers place the end plate on the top of the pipe pile, and then stabilize the end plate by threading the tension bolts with the prestressed steel rods.
[0015] Optionally, the baffle is made of a long steel section, which is bolted and welded to the end plate.
[0016] By adopting the above technical solution, workers first bolt the steel section to the end plate, and then weld the steel section to the end plate, so as to improve the connection strength between the end plate and the steel section.
[0017] Optionally, the blocking member is a cover plate, and the cover plate is provided with an avoidance hole for the steel cage to pass through.
[0018] By adopting the above technical solution, the cover plate plays a limiting role on the core-cast concrete, thereby reducing the possibility of the core-cast concrete being pulled out of the pipe pile.
[0019] Optionally, the cover plate and the end plate are bolted together by fastening bolts.
[0020] By adopting the above technical solution, the cover plate can be easily disassembled and assembled with the end plate.
[0021] Optionally, two semi-annular bolted clamps are commonly sleeved on the circumferential outer side walls of the cover plate and the end plate, and the cross-section of the clamps is C-shaped and clamps the opposite sides of the cover plate and the end plate.
[0022] By adopting the above technical solution, workers place the cover plate on the end plate, then put two clamps on the circumferential outer walls of the cover plate and the end plate, and then bolt the two clamps together to achieve a stable connection between the cover plate and the end plate.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. Since the stopper is arranged at the top of the pile, when the core concrete is subjected to a pulling force, the stopper can prevent the core concrete from moving out of the pile, thereby reducing the possibility of the core concrete being accidentally pulled out of the pile and improving the pull-out resistance of the pile and the cap;
[0025] 2. After the core concrete is solidified and formed, the core concrete and the convex teeth on the inner wall of the pile match each other, further reducing the possibility of the core concrete being accidentally pulled out of the pile;
[0026] 3. The worker places the cover plate on the end plate, then sets two clamps on the circumferential outer walls of the cover plate and the end plate, and then bolts the two clamps together to achieve a stable connection between the cover plate and the end plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a cross-sectional view of Example 1 of the present application.
[0028] Figure 2 It is a cross-sectional view of the positional relationship between the cover plate, the end plate and the pipe piles in Example 2 of the present application.
[0029] Figure 3 It is a cross-sectional view of the positional relationship between the clamp, the end plate and the cover plate in Example 2 of the present application.
[0030] Explanation of the reference numerals: 1. pipe pile; 2. steel cage; 3. core concrete; 6. end plate; 7. prestressed steel rod; 8. tension bolt; 9. steel section; 10. cover plate; 101. avoidance hole; 12. fastening bolt; 13. clamp. DETAILED DESCRIPTION
[0031] The following is combined with Figure 1-3 This application is described in further detail.
[0032] The embodiment of the present application discloses a pipe pile and a cap connection structure.
[0033] Example 1
[0034] Reference Figure 1 The connection structure between the pipe pile and the cap includes a steel cage 2 with the bottom inserted into the pipe pile 1 and the top cast in the cap. The core concrete 3 is cast in the pipe pile 1 at a position relative to the steel cage 2.
[0035] A plurality of convex teeth (not shown in the figure) are axially welded on the inner wall of the pipe pile 1. When the core concrete 3 poured in the pipe pile 1 is solidified, the circumferential outer wall of the core concrete 3 fits with the convex teeth, thereby reducing the possibility of the core concrete 3 being accidentally pulled out of the pipe pile 1 due to force.
[0036] Reference Figure 1 An end plate 6 is placed on the top of the pipe pile 1, and a plurality of prestressed steel rods 7 are pre-buried in the inner circumference of the side wall of the pipe pile 1. The end plate 6 is threadedly connected to the prestressed steel rods 7 through tension bolts 8.
[0037] Reference Figure 1 A stopper is arranged on the end plate 6 to prevent the core concrete 3 from moving out of the pipe pile 1. The stopper is cast in the cap, and the end plate 6 provides a stable and firm installation reference for the installation of the stopper.
[0038] The baffle adopts a long strip of steel 9 in the prior art. The steel 9 is radially arranged on the end plate 6 and passes through the center of the end plate 6. The steel 9 is bolted to the end plate 6 and welded thereto.
[0039] Reference Figure 1When the core-cast concrete 3 is subjected to an upward pulling force, the steel section 9 can prevent the core-cast concrete 3 from moving out of the pipe pile 1, thereby improving the pull-out resistance of the pipe pile 1 and the foundation, reducing the construction difficulty and providing a firm and reliable connection.
[0040] The implementation principle of Example 1 is as follows: since the steel section 9 is fixedly arranged on the top of the pipe pile 1, when the core concrete 3 is subjected to a tensile force, the steel section 9 can prevent the core concrete 3 from moving out of the pipe pile 1, thereby reducing the possibility of the core concrete 3 being accidentally pulled out of the pipe pile 1, and improving the tensile resistance of the pipe pile 1 and the foundation.
[0041] Example 2
[0042] Reference Figure 2 The difference between this embodiment and the embodiment 1 is that the stopper adopts a cover plate 10, and the cover plate 10 is bolted to the end plate 6. The cover plate 10 is provided with a plurality of avoidance holes 101, and the avoidance holes 101 are used for the steel cage 2 to pass through.
[0043] Reference Figure 3 In actual use, the end plate 6 and the cover plate 10 can not only be bolted together, but also can be firmly connected in other ways, such as jointly setting two semi-annular clamps 13 on the circumferential outer walls of the cover plate 10 and the end plate 6, the two clamps 13 are assembled into a full ring and bolted together, the cross-section of the clamps 13 is C-shaped and clamps the opposite sides of the cover plate 10 and the end plate 6.
[0044] The worker places the cover plate 10 on the end plate 6 , and then sleeves the two clamps 13 on the circumferential outer walls of the cover plate 10 and the end plate 6 , and then bolts the two clamps 13 together, thereby achieving a stable connection between the cover plate 10 and the end plate 6 .
[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A pipe pile and cap connection structure, characterized in that: The invention comprises a steel cage (2) with its bottom inserted into a pipe pile (1) and its top cast in a cap, core-cast concrete (3) is cast in the pipe pile (1) at a position relative to the steel cage (2), and a stopper is arranged at the top of the pipe pile (1) to prevent the core-cast concrete (3) from moving out of the pipe pile (1), and the stopper is cast in the cap.
2. The pipe pile and cap connection structure according to claim 1, characterized in that: A plurality of convex teeth are axially arranged on the inner wall of the pipe pile (1).
3. The pipe pile and cap connection structure according to claim 1, characterized in that: An end plate (6) is arranged on the top of the pipe pile (1), and the stopper is arranged on the end plate (6).
4. The pipe pile and cap connection structure according to claim 3, characterized in that: A plurality of prestressed steel rods (7) are pre-buried in the inner circumferential direction of the side wall of the pipe pile (1), and the end plate (6) is threadedly connected to the prestressed steel rods (7) via tension bolts (8).
5. The pipe pile and cap connection structure according to claim 3, characterized in that: The blocking member is made of a long strip of steel (9), and the steel (9) is bolted and welded to the end plate (6).
6. The pipe pile and cap connection structure according to claim 1, characterized in that: The blocking member is a cover plate (10), and the cover plate (10) is provided with an avoidance hole (101) for the steel cage (2) to pass through.
7. The pipe pile and cap connection structure according to claim 6, characterized in that: The cover plate (10) is bolted to the end plate (6) via fastening bolts (12).
8. The pipe pile and cap connection structure according to claim 7, characterized in that: Two semi-annular bolted clamps (13) are sleeved on the circumferential outer walls of the cover plate (10) and the end plate (6); the cross section of the clamps (13) is C-shaped and clamps the opposite sides of the cover plate (10) and the end plate (6).