A cap connecting structure suitable for a deviated pipe pile
By using a connector consisting of a slot and a guide tube, the problem of uneven connection between the misaligned pipe pile and the pile cap is solved, achieving precise alignment and tight fixation, and improving the stability and durability of the connection.
Patent Information
- Application Number
- CN202522174410.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-14
AI Technical Summary
In traditional connection methods, it is difficult for the offset pipe pile and the end plate of the pile cap to fit completely, resulting in uneven heating during welding, forming gaps, and affecting welding quality and connection stability.
The connector, consisting of a slot and a guide tube, achieves precise alignment and tight fixation between the pipe pile and the pile cap through the sliding insertion of the guide tube and the support of the support components, ensuring surface contact bearing capacity.
It achieves precise alignment and tight fixation between the offset pipe pile and the pile cap, eliminates the problem of uneven stress caused by point contact and line contact, and improves the stability and durability of the connection.
Smart Images
Figure CN224678730U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of pile cap connection components, and in particular to a pile cap connection structure suitable for offset pipe piles. Background Technology
[0002] In engineering fields such as building foundations, roads and bridges, and port terminals, prestressed concrete pipe piles have become core components in deep foundation engineering due to their advantages of high bearing capacity, fast construction speed, and high cost-effectiveness. They are widely used to bear the vertical and horizontal loads transferred from the superstructure, ensuring the overall stability of the engineering structure. However, during the pile driving process of prestressed concrete pipe piles, the phenomenon of pipe pile misalignment is prone to occur due to multiple factors. If the misaligned pipe piles are directly connected to the pile cap, it will lead to uneven load transfer in the superstructure, causing safety hazards such as pile cap cracking and concentrated stress on the pipe piles. Therefore, pile splicing is necessary. By adjusting the position of the pile head or adding connecting components, the misaligned pipe piles can meet the assembly requirements with the pile cap.
[0003] Currently, the industry commonly uses a direct welding method with beveled outer edges between the end plates for splicing offset pipe piles and pile caps. This method involves creating V- or U-shaped bevels on the outer edges of the steel end plates at both ends of the pipe pile, connecting the two pile heads together, and then performing arc welding or CO2 gas shielded welding along the bevels to form a welded connection between the end plates, thereby assembling the pipe pile and the pile cap. Regarding the aforementioned technologies, the inventors discovered that in traditional connection methods, relying solely on manual adjustment when butt-joining the end plates makes it difficult to achieve a complete fit between the end plate planes, easily resulting in gaps in the middle. This leads to point or line contact rather than the surface contact required by the design for load bearing. This non-surface contact state causes uneven heating of the end plates during welding, and defects such as incomplete penetration, slag inclusion, and porosity are prone to occur in the weld at the gap. At the same time, areas with excessively large gaps require more welding material, which not only increases welding costs but also causes weld cracking due to different shrinkage rates of the welding material, reducing the load-bearing capacity and durability of the joint. Utility Model Content
[0004] In order to overcome the problem that existing end plates rely solely on manual adjustment when connecting them, making it difficult to achieve a complete fit between the end plates and causing gaps that affect the weight of the pile welding, this application provides a pile cap connection structure suitable for offset pipe piles.
[0005] This application provides a pile cap connection structure suitable for offset pipe piles, which adopts the following technical solution: A foundation connection structure for offset pipe piles includes an offset pipe pile, a foundation pipe pile, and connectors. A foundation pipe pile is installed above the offset pipe pile, and the adjacent ends of the foundation pipe pile and the offset pipe pile are fixedly assembled by connectors. Multiple assembly slots are vertically provided at the adjacent ends of both the offset pipe pile and the foundation pipe pile. The connectors include an upper connecting pipe and a guide groove. A guide groove is vertically installed below the upper connecting pipe, and the adjacent ends of the upper connecting pipe and the guide groove are vertically connected and fixed with guide tubes, which are vertically slidably inserted into the guide groove. The upper connecting pipe and the guide groove are vertically connected and fixed with assembly inserts at the adjacent ends of the foundation pipe pile and the offset pipe pile, respectively. The assembly inserts at the ends of the foundation pipe pile and the offset pipe pile are slidably inserted into the assembly slots on the offset pipe pile and the foundation pipe pile. A support is sleeved between the upper connecting pipe and the guide groove, and the support is used to support and maintain the extended insertion height of the upper connecting pipe and the guide groove.
[0006] By adopting the above technical solution, the offset pipe pile, embedded in an irregular position on one side of the foundation, primarily bears the function of transferring loads; the cap pipe pile provides support above the offset pipe pile, and the two pipe piles are fixedly assembled using connectors. The connectors consist of an upper connecting pipe sleeve and a guide groove sleeve. The upper connecting pipe sleeve and the guide groove sleeve are respectively connected and fixed to the adjacent ends of the pipe piles via assembly inserts, enabling precise alignment and fixation of the cap pipe pile and the offset pipe pile. The guide sleeve, nested within the guide groove sleeve, can slide vertically, facilitating adjustment of the connection's support height. A support component is fitted between the upper connecting pipe sleeve and the guide groove sleeve, ensuring a fixed height at different positions and providing a secure connection. The design of the upper connecting pipe sleeve and the guide groove sleeve makes the connection between the cap pipe pile and the offset pipe pile more stable, while the cooperation between the assembly slot and the assembly insert ensures assembly accuracy. By vertically aligning the upper connecting pipe and the guide tube, and slidingly connecting the guide tube and the assembled insert, the pier cap pipe pile and the offset pipe pile are tightly fixed, while the support components further enhance the firmness of the connection and ensure the stability of the overall structure.
[0007] Optionally, the support includes a support ring, which is horizontally sleeved on the outside of the upper connecting pipe and the guide groove, and multiple screws are evenly and vertically arranged on the upper and lower end faces of the support ring.
[0008] By adopting the above technical solution, the main components of the support include a support ring, a screw, a threaded tube, and a support pad. The support ring is horizontally sleeved on the outside of the upper connecting tube and the guide groove tube, serving to support and position them, ensuring the relative position stability of the upper connecting tube and the guide groove tube.
[0009] Optionally, multiple helical tubes are evenly and vertically fixed on the upper and lower end faces of the support ring, and the multiple helical tubes are threadedly assembled with multiple screws in a one-to-one correspondence.
[0010] By adopting the above technical solution, the screw is evenly and vertically arranged on the upper and lower end faces of the support ring, and penetrates the screw tube downwards. The latter is fixed on the support ring, realizing a detachable connection between the two, which is convenient for adjustment and fixation.
[0011] Optionally, a support pad is horizontally fixed at the top of the screw, and the support pad is made of silicone rubber.
[0012] By adopting the above technical solution, the support pad is horizontally fixed at the top of the screw and is made of silicone rubber, which provides soft support and shock absorption for the guide tube, reduces stress concentration, and improves the overall durability and stability of the structure.
[0013] Optionally, an extension slide frame is provided on the top surface of the pile cap, and the extension slide frame is fixed to the top surface of the pile cap.
[0014] By adopting the above technical solution, an extended sliding frame is provided on the top surface of the pier cap pipe pile to provide a guide path for vertical sliding.
[0015] Optionally, the extended slide frame is provided with a support arm, and a fixing plate is fixed to the end of the support arm away from the extended slide frame, and the fixing plate is fixedly assembled on the support platform.
[0016] By adopting the above technical solution, the support arm, which is slidably installed inside the extended sliding frame, can slide along it, thereby adjusting the vertical position of the support arm on the top of the pile cap. A fixing plate is fixed to the end of the support arm away from the extended sliding frame, which can fix it to the pile cap and maintain the positioning of the support arm.
[0017] Optionally, a slider frame is fixed to the other end of the support arm, and the slider frame is slidably assembled in the extension slider frame.
[0018] By adopting the above technical solution, a slider frame is fixed at the other end of the support arm. The slider frame slides up and down in the extended slider frame to adjust the position of the support arm and the height difference between it and the support platform.
[0019] Optionally, the slider frame is internally rotatably connected to a screw cylinder, and both ends of the screw cylinder are threaded with studs, and the ends of the studs are vertically fixed with inserts. Multiple positioning holes are evenly arranged on the extended slider frame, and the positioning holes and inserts are used to limit the position of the slider frame within the extended slider frame.
[0020] By adopting the above technical solution, the studs assembled by the threads at the upper and lower ends of the screw cylinder inside the slider frame can be raised or lowered by rotation. The insertion of the fixed pin at the end of the stud and the positioning hole on the extended slide frame can fix the slider frame in a specific position in the extended slide frame, thereby achieving precise adjustment of the position of the support arm and ultimately adjusting the distance between the support arm and the support platform to meet different installation requirements.
[0021] In summary, this application includes at least one of the following beneficial technical effects: Through a dual positioning structure of a pre-assembled insert and a sliding fit between the guide tube and the guide groove tube, the tight fit between the pipe pile and the connector is ensured. The pre-assembled insert at the end of the guide groove tube of the connector is fitted with a pre-aligned insert at the end of the offset pipe pile, and the pre-assembled insert at the top of the upper connecting pipe tube is fitted with a pre-aligned insert at the end of the pile cap. The inner diameter of the pre-assembled insert precisely matches the outer diameter of the pipe pile end, enabling rapid coaxial positioning of the pipe pile and the connector, avoiding horizontal offset or angular deviation during manual adjustment, and laying the foundation for end plate fitting. The guide tube at the bottom of the upper connecting pipe tube is vertically slidably inserted into the guide groove tube, improving the fitting accuracy between the guide tube and the guide groove tube. The relative position of the pipe pile and the connector can be finely adjusted by sliding, ensuring complete fit between the pipe pile end plate and the connector end face, achieving the surface contact bearing capacity required by the design, and completely eliminating the uneven force distribution caused by point contact and line contact. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the overall structure of the embodiment of this application in an exploded state; Figure 3 This is a schematic diagram of the connector in an exploded state according to an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the support member in the exploded state according to an embodiment of this application; Figure 5 This is a structural schematic diagram of the pile cap pipe pile in the disassembled state according to the embodiment of this application.
[0023] Explanation of reference numerals in the attached drawings: 1. Offset pipe pile; 2. Pipe pile cap; 21. Extended sliding frame; 22. Positioning hole; 23. Support arm; 24. Sliding block frame; 25. Screw barrel; 26. Screw stud; 27. Insert post; 28. Fixing plate; 3. Connector; 31. Upper connecting pipe; 32. Guide tube; 33. Guide groove tube; 34. Assembled insert; 4. Support component; 41. Support ring; 42. Screw tube; 43. Screw rod; 44. Support pad. Detailed Implementation
[0024] The present application will be further described in detail below with reference to the accompanying drawings.
[0025] This application discloses a pile cap connection structure suitable for offset pipe piles. (Refer to...) Figure 1 , Figure 2 , Figure 3 and Figure 4A foundation connection structure for offset pipe piles includes an offset pipe pile 1, a foundation pipe pile 2, and a connector 3. The foundation pipe pile 2 is positioned above the offset pipe pile 1, and the adjacent ends of the foundation pipe pile 2 and the offset pipe pile 1 are fixedly assembled via the connector 3. Multiple assembly slots are vertically provided at the adjacent ends of both the offset pipe pile 1 and the foundation pipe pile 2. The connector 3 includes an upper connecting pipe cylinder 31 and a guide groove cylinder 33. The guide groove cylinder 33 is vertically positioned below the upper connecting pipe cylinder 31, and the adjacent ends of the upper connecting pipe cylinder 31 and the guide groove cylinder 33 are vertically connected. A guide tube 32 is fixedly installed and vertically slidably inserted into a guide groove tube 33. The upper connecting tube 31 and the guide groove tube 33 are vertically connected to the adjacent ends of the foundation pipe pile 2 and the offset pipe pile 1, respectively, and the assembly insert tubes 34 at the ends of the foundation pipe pile 2 and the offset pipe pile 1 are slidably inserted into the assembly slots on the offset pipe pile 1 and the foundation pipe pile 2. A support member 4 is sleeved between the upper connecting tube 31 and the guide groove tube 33, and the support member 4 is used to support and maintain the extended insertion height of the upper connecting tube 31 and the guide groove tube 33.
[0026] By adopting the above technical solution, the offset pipe pile 1 is embedded in an irregular position on one side of the foundation, mainly bearing the function of transferring loads; the cap pipe pile 2 provides support above the offset pipe pile 1, and the two pipe piles are fixedly assembled by a connector 3. The connector 3 consists of an upper connecting pipe cylinder 31 and a guide groove cylinder 33. The upper connecting pipe cylinder 31 and the guide groove cylinder 33 are respectively connected and fixed to the adjacent ends of the pipe piles by an assembly insert 34, so that the cap pipe pile 2 and the offset pipe pile 1 can be accurately aligned and fixed. The guide cylinder 32 is nested inside the guide groove cylinder 33 and can slide vertically, which is beneficial for adjusting the support height of the connection. The support 4 is sleeved between the upper connecting pipe cylinder 31 and the guide groove cylinder 33 to ensure that their height is fixed at different positions and to support and secure the connection. The design of the upper connecting pipe cylinder 31 and the guide groove cylinder 33 makes the connection between the cap pipe pile 2 and the offset pipe pile 1 more stable, while the cooperation between the assembly slot and the assembly insert 34 ensures the assembly accuracy. By vertically aligning the upper connecting pipe 31 and the guide groove 33, and slidingly connecting the guide tube 32 and the assembly insert 34, the pier cap pipe pile 2 and the offset pipe pile 1 are tightly fixed, while the support member 4 further enhances the firmness of the connection and ensures the stability of the overall structure.
[0027] Reference Figure 3 and Figure 4The support component 4 includes a support ring 41, which is horizontally sleeved on the outside of the upper connecting pipe 31 and the guide groove 33. Multiple screws 43 are evenly and vertically arranged on the upper and lower end faces of the support ring 41. The main components of the support component 4 include the support ring 41, screws 43, threaded tubes 42, and support pads 44. The support ring 41, horizontally sleeved on the outside of the upper connecting pipe 31 and the guide groove 33, serves to support and position, ensuring the relative position stability of the upper connecting pipe 31 and the guide groove 33. Multiple threaded tubes 42 are evenly and vertically fixed on the upper and lower end faces of the support ring 41, and each threaded tube 42 is threadedly assembled with a corresponding screw 43. The screws 43, evenly and vertically arranged on the upper and lower end faces of the support ring 41, penetrate downwards through the threaded tubes 42, which are fixed to the support ring 41, achieving a detachable connection for easy adjustment and fixation. A support pad 44, made of silicone rubber, is horizontally fixed to the top of the screw 43. The support 44 is horizontally fixed at the top of the screw 43. It is made of silicone rubber and provides soft support and shock absorption for the guide tube 33, reducing stress concentration and improving the overall durability and stability of the structure.
[0028] Reference Figure 5 An extended sliding frame 21 is provided on the top surface of the pile cap 2, and the extended sliding frame 21 is fixed to the top surface of the pile cap 2. The extended sliding frame 21 on the top surface of the pile cap 2 provides a guide path for vertical sliding. A support arm 23 is slidably provided inside the extended sliding frame 21, and a fixing plate 28 is fixed to the end of the support arm 23 away from the extended sliding frame 21, and the fixing plate 28 is fixedly assembled on the pile cap. The support arm 23 slidably provided inside the extended sliding frame 21 can slide along it, thereby adjusting the vertical position of the support arm 23 on the top of the pile cap 2. The fixing plate 28 is fixed to the end of the support arm 23 away from the extended sliding frame, which can fix it on the pile cap and maintain the positioning of the support arm 23. A slider frame 24 is fixed to the other end of the support arm 23, and the slider frame 24 is slidably assembled in the extended sliding frame 21. A slider frame 24 is fixed to the other end of the support arm 23. The slider frame 24 slides up and down in the extended slide frame 21 to adjust the position of the support arm 23 and its height difference with the support platform. A screw cylinder 25 is rotatably connected inside the slider frame 24, and studs 26 are threaded onto both the upper and lower ends of the screw cylinder 25. A pin 27 is vertically fixed to the end of each stud 26. Multiple positioning holes 22 are evenly distributed on the extended slide frame 21, and these positioning holes 22 are inserted into the pins 27 to limit the position of the slider frame 24 within the extended slide frame 21. The screws 26 threaded onto both the upper and lower ends of the screw cylinder 25 rotatably connected inside the slider frame 24 can raise or lower the support arm 23 by rotation. The pins 27 fixed to the ends of the studs 26 are inserted into the positioning holes 22 on the extended slide frame 21 to fix the slider frame 24 at a specific position within the extended slide frame 21, thereby achieving precise adjustment of the position of the support arm 23 and ultimately adjusting the distance between the support arm and the support platform to meet different installation requirements.
[0029] The implementation principle of a pile cap connection structure applicable to off-center pipe piles in this application embodiment is as follows: First, when splicing the foundation pipe pile 2 and the offset pipe pile 1, the assembly insert 34 of the guide groove cylinder 33 in the connector 3 near the end of the offset pipe pile 1 is inserted into the end of the offset pipe pile 1 for limiting. Then, the support ring 41 in the support 4 is horizontally sleeved outside the guide groove cylinder 33. The guide cylinder 32 at the bottom of the upper connecting pipe cylinder 31 is vertically slidably inserted into the guide groove cylinder 33. Then, the assembly insert 34 at the top of the upper connecting pipe cylinder 31 is inserted into the end of the foundation pipe pile 2 for limiting. Then, the guide groove cylinder 3 is welded and fixed to the contact surface of the offset pipe pile 1 and the upper connecting pipe cylinder 31 and the foundation pipe pile 2. Then, when it is necessary to adjust the support height of the connector 3, rotate the studs 43 in the screw tubes 42 at both ends of the support ring 41 to push the support pad 44 against the upper connecting tube 31 and the guide groove tube 33, so that the guide tube 32 at the bottom of the upper connecting tube 31 slides vertically in the guide groove tube 33, thereby vertically supporting the vertical lifting height of the connector 3. Finally, when adjusting the installation position of the fixing plate 28 at the top of the pile cap 2 and the pile cap, the slider frame 24 at the end of the support arm 23 is pulled to slide in the extension slide frame 21 to adjust the position of the fixing plate 28 supporting the pile cap 2. Then, the screw cylinder 25 in the slider frame 24 is rotated to drive the stud 26 to move vertically, which drives the insert 27 to be inserted into the positioning hole 22 in the extension slide frame 21, thereby expanding the position of the fixing plate 28 supporting the pile cap.
[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A pile cap connection structure suitable for offset pipe piles, characterized in that, The assembly includes an offset pipe pile (1), a foundation pipe pile (2), and a connector (3). The foundation pipe pile (2) is positioned above the offset pipe pile (1), and the adjacent ends of the foundation pipe pile (2) and the offset pipe pile (1) are fixedly assembled via the connector (3). Multiple assembly slots are vertically provided at the adjacent ends of both the offset pipe pile (1) and the foundation pipe pile (2). The connector (3) includes an upper connecting pipe cylinder (31) and a guide groove cylinder (33). The guide groove cylinder (33) is vertically positioned below the upper connecting pipe cylinder (31), and a guide cylinder (32) is vertically connected and fixed at the adjacent ends of both the upper connecting pipe cylinder (31) and the guide groove cylinder (33). The guide tube (32) is vertically slidably inserted into the guide groove tube (33). The upper connecting tube (31) and the guide groove tube (33) are vertically connected and fixed with the adjacent ends of the foundation pipe pile (2) and the offset pipe pile (1) respectively. The assembly insert (34) at the ends of the foundation pipe pile (2) and the offset pipe pile (1) is slidably inserted into the assembly slots on the offset pipe pile (1) and the foundation pipe pile (2). A support member (4) is sleeved between the upper connecting tube (31) and the guide groove tube (33). The support member (4) is used to support and maintain the extension insertion height of the upper connecting tube (31) and the guide groove tube (33).
2. The pile cap connection structure for offset pipe piles according to claim 1, characterized in that: The support member (4) includes a support ring (41), which is horizontally sleeved on the outside of the upper connecting tube (31) and the guide groove tube (33), and multiple screws (43) are evenly and vertically arranged on the upper and lower end faces of the support ring (41).
3. A pile cap connection structure suitable for offset pipe piles according to claim 2, characterized in that: Multiple helical tubes (42) are evenly and vertically fixed on the upper and lower end faces of the support ring (41), and the multiple helical tubes (42) are threadedly assembled with multiple screws (43) in a one-to-one correspondence.
4. A pile cap connection structure suitable for offset pipe piles according to claim 3, characterized in that: The top end of the screw (43) is horizontally fixed with a support (44), and the support (44) is made of silicone rubber.
5. A pile cap connection structure suitable for offset pipe piles according to claim 1, characterized in that: An extension slide frame (21) is provided on the top surface of the pile cap (2), and the extension slide frame (21) is fixed on the top surface of the pile cap (2).
6. A pile cap connection structure suitable for offset pipe piles according to claim 5, characterized in that: The extended slide frame (21) is slidably provided with a support arm (23), and a fixing plate (28) is fixed at the end of the support arm (23) away from the extended slide frame (21), and the fixing plate (28) is fixedly assembled on the support platform.
7. A pile cap connection structure suitable for offset pipe piles according to claim 6, characterized in that: The other end of the support arm (23) is fixed with a slider frame (24), and the slider frame (24) is slidably assembled in the extension slider frame (21).
8. A pile cap connection structure suitable for offset pipe piles according to claim 7, characterized in that: The slider frame (24) is rotatably connected to a screw cylinder (25), and both ends of the screw cylinder (25) are threaded with studs (26), and the end of the stud (26) is vertically fixed with a plug (27). The extended slider frame (21) is evenly provided with multiple positioning holes (22), and the positioning holes (22) and the plugs (27) are inserted to limit the position of the slider frame (24) in the extended slider frame (21).