Pipe jacking pipeline connecting structure
By using a metal ring protrusion and groove insertion connection in pipe jacking construction, combined with a flexible sealing ring and a steel cage structure, the problem of easy cracking and leakage of pipe connections during pipe jacking construction is solved, achieving a high-strength and high-sealing pipe connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CCCC THIRD HIGHWAY ENG CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-08
AI Technical Summary
In existing pipe jacking construction, the concrete structure of the annular protrusion and annular groove at the pipe end has limited strength. It is prone to edge cracking and breakage due to uneven stress or external loads, resulting in leakage and misalignment at the connection.
The connection is made by inserting metal ring protrusions and grooves, and the connection strength and sealing performance are enhanced by flexible sealing rings, connecting rings, connecting pipes, annular limiting grooves, annular connecting steel strips and grouting pipes. The connection is fixed by welding with a steel cage structure to increase the stability and sealing performance.
It improves the overall strength and sealing of pipe connections, reduces the risk of cracking and leakage, and enhances the stability and smoothness of the connection.
Smart Images
Figure CN224214935U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of pipe connections, and in particular to a pipe jacking connection structure. Background Technology
[0002] Pipe jacking, as a trenchless underground pipeline construction technology, is widely used in the laying of underground pipelines in densely populated urban areas.
[0003] Currently, during pipe jacking construction, the connection of pipes mainly relies on the interlocking of the annular protrusion (socket) at the end of the pipe with the annular groove (spigot) of the adjacent pipe.
[0004] Regarding the aforementioned technologies, the annular protrusions and annular grooves at the pipe ends are usually integrally formed with the pipe and are themselves concrete structures with relatively limited overall strength. During subsequent jacking in the soil, they are prone to edge cracking and breakage due to uneven stress or external loads, causing damage or even misalignment at the connection points of adjacent pipes, leading to leaks at the pipe connections. Therefore, there is room for improvement. Utility Model Content
[0005] To improve the structural strength of pipe connections during pipe jacking construction, this application provides a pipe connection structure for pipe jacking.
[0006] This application provides a pipe jacking connection structure, which adopts the following technical solution:
[0007] A pipe jacking connection structure includes a pipe body, with a metal annular protrusion and a metal annular groove coaxially connected to both ends of the pipe body; a plurality of flexible sealing rings are sleeved on the outer periphery of the metal annular protrusion, and the adjacent end of the pipe body is inserted and engaged through the metal annular protrusion and the metal annular groove.
[0008] By adopting the above technical solution, during pipe jacking construction, adjacent pipe bodies are connected by inserting a metal annular protrusion and a metal annular groove at their closest ends. Compared with the traditional concrete connection structure, this effectively improves the overall strength of the connection between adjacent pipe bodies and reduces the possibility of cracking and misalignment at the connection during pipe jacking construction. The flexible sealing ring on the outer periphery of the metal annular protrusion also helps to improve the sealing performance of the connection between adjacent pipe bodies, further reducing the risk of cracking and leakage at the pipe joint.
[0009] Preferably, the metal annular protrusion is coaxially connected to a first connecting ring at one end near the pipe body; the metal annular groove is coaxially connected to a second connecting ring at one end near the pipe body; both the first connecting ring and the second connecting ring are welded and fixed to the internal steel cage structure of the pipe body.
[0010] By adopting the above technical solution, it is beneficial to enhance the connection stability between the metal annular protrusions and the metal annular grooves and the pipe body, so that the connection between adjacent pipe bodies can better resist external loads during the jacking process, and reduce the possibility of displacement damage to the metal annular protrusions and metal annular grooves under stress.
[0011] Preferably, the first connecting ring is coaxially connected to a first connecting pipe at one end near the pipe body; the second connecting ring is coaxially connected to a second connecting pipe at one end near the pipe body.
[0012] The first connecting pipe and the second connecting pipe are respectively sleeved on both ends of the pipe body.
[0013] By adopting the above technical solution, on the one hand, it is beneficial to further improve the integration of the metal annular protrusion and the metal annular groove with the pipe body; on the other hand, it is beneficial to improve the sealing performance of the connection between the metal annular protrusion and the metal annular groove and the pipe body.
[0014] Preferably, the outer periphery of the metal annular protrusion has an annular limiting groove corresponding to the flexible sealing ring, and the inner periphery of the flexible sealing ring is embedded in the corresponding annular limiting groove.
[0015] By adopting the above technical solution, the flexible sealing ring is limited by the annular limiting groove, which helps to reduce the displacement or detachment of the flexible sealing ring during the connection and jacking process of the pipeline body. This helps to better ensure the sealing performance of the pipeline connection and reduce the risk of water leakage at the pipeline body connection.
[0016] Preferably, annular connecting steel strips are coaxially embedded in the inner cavities of adjacent pipe bodies at their closest ends; the annular connecting steel strips at the closest ends of adjacent pipe bodies are connected by several connecting steel bars.
[0017] By adopting the above technical solution, the annular connecting steel strip at the near end of the adjacent pipe body is connected by connecting steel bars. The connecting steel bars and the annular connecting steel strip are used to limit the connection of the adjacent pipe bodies, which helps to further improve the connection strength at the pipe body connection.
[0018] Preferably, a plurality of annular reinforcing bars are provided at one end adjacent to the pipe body, and the outer periphery of the annular reinforcing bars is connected and fixed to a plurality of connecting reinforcing bars.
[0019] By adopting the above technical solution, the ring reinforcement is used to strengthen and limit the connection of several connecting steel bars, thereby preventing deformation and damage to the subsequent connecting steel bars.
[0020] Preferably, the annular connecting steel strip is welded and fixed to the internal steel reinforcement cage structure of the pipe body.
[0021] By adopting the above technical solution, it is beneficial to improve the integration of the annular connecting steel strip and the pipeline body, so that the external load on the pipeline body can be better transferred to the annular connecting steel strip.
[0022] Preferably, a grouting pipe is embedded on the outer periphery of one end of the pipe body near the metal annular protrusion, and the first connecting pipe has a grouting port corresponding to the grouting pipe, and the grouting pipe is connected to the grouting pipe.
[0023] By adopting the above technical solution, during the subsequent pipeline jacking process, slurry can be injected into the outer periphery of the pipeline through the grouting pipe to reduce the friction between the pipeline body connection and the soil layer, so as to facilitate the smooth movement of the pipeline body inside the soil.
[0024] In summary, this application includes at least one of the following beneficial technical effects:
[0025] 1. By coaxially connecting metal annular protrusions and metal annular grooves at both ends of the pipe body, compared with the traditional concrete connection structure, it is beneficial to improve the structural strength of the pipe body connection and reduce the possibility of damage and cracking at the connection due to external loads during the jacking process.
[0026] 2. By connecting both the metal annular protrusions and the metal annular grooves to the internal steel cage structure of the pipe body, it is beneficial to further improve the integration of the metal annular protrusions and the metal annular grooves with the pipe body.
[0027] 3. By pre-embedding annular connecting steel strips in the inner cavity of adjacent pipe bodies at one end, and connecting the annular connecting steel strips at the adjacent pipe bodies at one end with connecting steel bars, the structural strength of the connection between adjacent pipe bodies is further enhanced. Attached Figure Description
[0028] Figure 1 This is a structural schematic diagram of the pipeline body used in the embodiments of this application.
[0029] Figure 2 This is a schematic diagram illustrating the splicing of adjacent pipe bodies in an embodiment of this application.
[0030] Figure 3 yes Figure 2 Enlarged schematic diagram of part A in the middle.
[0031] Figure 4 This is a schematic diagram illustrating the internal structure of the pipe body in an embodiment of this application.
[0032] Explanation of reference numerals in the attached figures:
[0033] 1. Pipe body; 10. Reinforcing cage structure; 11. Annular connecting steel strip; 2. Metal annular protrusion; 20. Flexible sealing ring; 21. First connecting ring; 22. First connecting pipe; 23. Annular limiting groove; 3. Metal annular groove; 31. Second connecting ring; 32. Second connecting pipe; 4. Connecting reinforcing bar; 41. Reinforcing bar segment; 42. Annular bar; 5. Grouting pipe. Detailed Implementation
[0034] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.
[0035] This application discloses a pipe jacking connection structure, referring to... Figure 1 and Figure 2 It includes a pipe body 1; the front and rear ends of the pipe body 1 are coaxially connected with a metal annular protrusion 2 and a metal annular groove 3 respectively; the adjacent ends of adjacent pipe bodies 1 are connected and fitted together by the metal annular protrusion 2 and the metal annular groove 3, so as to realize the connection and fit between the pipe bodies 1.
[0036] Reference Figure 3 and Figure 4 The metal annular protrusion 2 and the metal annular groove 3 are coaxially welded to one end of the pipe body 1, respectively, with a first connecting ring 21 and a second connecting ring 31 attached to both ends of the pipe body 1. A reinforcing cage structure 10 is embedded inside the pipe body 1. The ends of the longitudinal ribs of the reinforcing cage structure 10 are welded and fixed to the first connecting ring 21 and the second connecting ring 31, respectively. This arrangement improves the integrity of the connection between the metal annular protrusion 2 and the metal annular groove 3 and the pipe body 1, and restricts displacement and deformation of the metal annular protrusion 2 and the metal annular groove 3 under stress.
[0037] Reference Figure 3 and Figure 4 The first connecting ring 21 and the second connecting ring 31 are coaxially welded to one connecting pipe 22 and the other connecting pipe 32 at their ends closest to the pipe body 1. The first connecting pipe 22 and the second connecting pipe 32 are respectively fitted onto the two ends of the pipe body 1. By fitting the first connecting pipe 22 and the second connecting pipe 32 onto the pipe ends, it is beneficial to further limit and fix the metal annular protrusion 2 and the metal annular groove 3, thereby improving the overall strength of the connection point of the pipe body 1. Simultaneously, it helps to better seal the connection between the metal annular protrusion 2 and the metal annular groove 3 and the pipe body 1, preventing external mud and water from entering the interior of the pipe body 1.
[0038] Reference Figure 2 and Figure 3A plurality of flexible sealing rings 20 are coaxially sleeved on the outer periphery of the metal annular protrusion 2. In this embodiment, the flexible sealing rings 20 are O-ring rubber rings. When the metal annular protrusion 2 and the metal annular groove 3 are interlocked, the flexible sealing rings 20 are squeezed and deformed. The flexible sealing rings 20 fill the gap between the metal annular protrusion 2 and the metal annular groove 3, which limits the seepage of external mud and water into the inner cavity of the pipe body 1 through the connection between the metal annular protrusion 2 and the metal annular groove 3 during the subsequent jacking construction process. This is beneficial to improving the overall sealing effect of the connection structure of the pipe body 1.
[0039] The outer periphery of the metal annular protrusion 2 is provided with several annular limiting grooves 23 corresponding to several flexible sealing rings 20. The inner periphery of the flexible sealing ring 20 is embedded in the corresponding annular limiting groove 23. The annular limiting groove 23 is used to limit the flexible sealing ring 20, so as to restrict the displacement of the flexible sealing ring 20 during the splicing or jacking process of the pipe body 1. This is beneficial to better seal the gap at the connection between the metal annular protrusion 2 and the metal annular groove 3 through the flexible sealing ring 20.
[0040] In this embodiment, the metal annular protrusion 2, the first connecting ring 21, the first connecting tube 22, the metal annular groove 3, the second connecting ring 31, and the second connecting tube 32 are all made of high-strength steel such as alloy steel.
[0041] The end of the metal ring protrusion 2 away from the pipe body 1 is chamfered so that the metal ring protrusion 2 can be inserted into the corresponding metal ring groove 3.
[0042] Reference Figure 3 and Figure 4 Annular connecting steel strips 11 are coaxially embedded in the inner cavity of adjacent pipe bodies 1 at their closest ends. Several connecting steel bars 4 are arranged between the annular connecting steel strips 11 at their closest ends, and the connecting steel bars 4 are evenly distributed around the annular connecting steel strips 11. Specifically, the connecting steel bars 4 are threaded steel bars, and both ends of the connecting steel bars 4 are welded and fixed to the annular connecting steel strips 11 at their closest ends through steel bar segments 41. The connecting steel bars 4, together with the annular connecting steel strips 11, further reinforce the connection between adjacent pipe bodies 1.
[0043] The annular connecting steel strip 11 is welded and fixed to the internal steel cage structure 10 of the pipe body 1, so that the pipe body 1 and the annular connecting steel strip 11 can jointly bear the external load.
[0044] Several annular reinforcing bars 42 are also provided at the adjacent end of the adjacent pipe body 1. The annular reinforcing bars 42 are made of steel bars and have a ring structure. The outer periphery of the annular reinforcing bars 42 is welded and fixed to several connecting steel bars 4. The annular reinforcing bars 42 are used to further reinforce and limit the several connecting steel bars 4, so as to further improve the structural strength of the connection between the adjacent pipe bodies 1.
[0045] A grouting pipe 5 is embedded at one end of the pipe body 1 near the metal annular protrusion 2. The first connecting pipe 22 of the metal annular protrusion 2 has a grouting port corresponding to the grouting pipe 5, and the grouting pipe 5 is connected to the grouting port. During subsequent pipe jacking construction, grout can be injected outward through the grouting pipe 5 to fill the gap between the pipe body 1 and the soil, reduce the friction between the pipe body 1 and the soil, and facilitate the smooth movement of the pipe body 1 in the soil.
[0046] The implementation principle of this application embodiment is as follows: when splicing the pipe body 1 of the pipe jacking construction, after the flexible sealing ring 20 is embedded into the limiting groove on the metal annular protrusion 2 of the pipe body 1, the metal annular protrusion 2 and the metal annular groove 3 at the near end of the adjacent pipe body 1 are inserted and matched to realize the connection between the pipe bodies 1. The metal annular protrusion 2 and the metal annular groove 3 effectively improve the overall structural strength of the connection between adjacent pipe bodies 1.
[0047] 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 pipe jacking connection structure, characterized in that: The system includes a pipe body (1), with a metal annular protrusion (2) and a metal annular groove (3) coaxially connected at both ends of the pipe body (1); a number of flexible sealing rings (20) are sleeved on the outer periphery of the metal annular protrusion (2), and the adjacent end of the pipe body (1) is inserted and engaged with the metal annular protrusion (2) and the metal annular groove (3).
2. The pipe jacking connection structure according to claim 1, characterized in that: The metal annular protrusion (2) is coaxially connected to a first connecting ring (21) at one end near the pipe body (1); the metal annular groove (3) is coaxially connected to a second connecting ring (31) at one end near the pipe body (1); both the first connecting ring (21) and the second connecting ring (31) are welded and fixed to the internal steel cage structure (10) of the pipe body (1).
3. The pipe jacking connection structure according to claim 2, characterized in that: The first connecting ring (21) is coaxially connected to a first connecting pipe (22) at one end near the pipe body (1); the second connecting ring (31) is coaxially connected to a second connecting pipe (32) at one end near the pipe body (1); The first connecting pipe (22) and the second connecting pipe (32) are respectively sleeved on both ends of the pipe body (1).
4. The pipe jacking connection structure according to claim 1, characterized in that: The outer periphery of the metal annular protrusion (2) is provided with an annular limiting groove (23) corresponding to the flexible sealing ring (20), and the inner periphery of the flexible sealing ring (20) is embedded in the corresponding annular limiting groove (23).
5. The pipe jacking connection structure according to claim 1, characterized in that: An annular connecting steel strip (11) is coaxially embedded in the inner cavity of adjacent pipe bodies (1); the annular connecting steel strip (11) at adjacent pipe bodies (1) are connected by several connecting steel bars (4).
6. The pipe jacking connection structure according to claim 5, characterized in that: Several annular reinforcing bars (42) are provided at one end of the adjacent pipe body (1), and the outer periphery of the annular reinforcing bars (42) is connected and fixed to several connecting reinforcing bars (4).
7. A pipe jacking connection structure according to claim 6, characterized in that: The annular connecting steel strip (11) is welded and fixed to the internal steel cage structure (10) of the pipe body (1).
8. The pipe jacking connection structure according to claim 3, characterized in that: A grouting pipe (5) is embedded on the outer periphery of one end of the pipe body (1) near the metal annular protrusion (2). The first connecting pipe (22) has a grouting port corresponding to the grouting pipe (5). The grouting pipe (5) is connected to the grouting pipe (5).