Detachable jacking pipe joint structure for lateral holing of tunnel

Abstract

The utility model discloses a detachable jacking pipe joint structure for tunnel lateral holing. The detachable jacking pipe joint structure comprises a plurality of pipe joints which are sequentially sealed and fixedly connected. The connecting structure is characterized in that the pipe joint comprises a second pipe joint, the second pipe joint is provided with a C-shaped pipe piece, transverse steel ring beams and a connecting pipe piece, an opening part is formed in one side face of the C-shaped pipe piece, the transverse steel ring beams are embedded in the two ends of the opening part of the C-shaped pipe piece, and the transverse steel ring beams are further connected with main ribs in the C-shaped pipe piece through welding tie bars; the connecting pipe piece is clamped between the two transverse steel ring beams in a sealed mode. A plurality of corresponding connecting grooves are formed in the inner wall of the transverse steel ring beam and the inner walls of the upper ends and the lower ends of the connecting pipe pieces, and the connecting pipe pieces and the transverse steel ring beam are fixedly connected through bolts inserted into bolt holes in the connecting grooves. According to the utility model, the lateral holing construction of the jacking pipe is facilitated, the construction cost is saved, the construction period is shortened, and the working efficiency and the safety of the holing construction of the jacking pipe are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe jacking hole opening, and particularly relates to a detachable pipe jacking pipe joint structure for lateral hole opening of a tunnel. Background Technique

[0002] During the pipe jacking construction process, it is sometimes necessary to open holes in the pipe segments of the pipe jacking to meet specific engineering requirements. For example, to connect or disconnect other pipelines, set inspection wells, or carry out other maintenance operations, etc. The research on the pipe jacking segment hole opening technology is of great significance for ensuring the quality and safety of pipe jacking construction, and also of great significance for promoting the development of urban underground pipe network construction. By optimizing the hole opening process and technical means, the construction efficiency and safety can be improved, the construction cost and the impact on the surrounding environment can be reduced. At the same time, it also helps to enhance the independent innovation ability and international competitiveness of our country in the field of urban underground pipe network construction.

[0003] The traditional lateral hole opening of concrete pipe joints is generally a monolithic reinforced concrete structure first, and then the reinforced concrete on the pipe jacking at the part where the hole needs to be opened is cut by cutting the concrete. Although this traditional on-site hole opening method of pipe jacking pipe joints has high flexibility, it causes great damage to the existing pipe joints. At the same time, the connection and water stop effect between the original pipe jacking pipe joints and the post-cast auxiliary facilities are poor; moreover, in the case where the hole position or size is uncertain, higher construction techniques and experience are required. Especially when operating in the underground environment, the construction difficulty is large, and the waterproof treatment is more difficult. Effective waterproof measures need to be taken to prevent groundwater from seeping in, the construction progress is slow, and the construction cost is increased. Content of the Utility Model

[0004] In view of the technical problems existing in the lateral hole opening of the existing pipe jacking pipe joint structure, the utility model provides a detachable pipe jacking pipe joint structure for lateral hole opening of a tunnel, which facilitates the construction of lateral hole opening of the pipe jacking, has simple operation, saves costs, reduces the construction period, and improves the work efficiency and safety.

[0005] In order to achieve the above technical effects, the technical solution adopted by the utility model is:

[0006] A detachable jacking pipe segment structure for lateral tunneling, comprising a number of pipe segments that are sequentially sealed and fixedly connected; characterized in that the pipe segment includes one or more second pipe segments arranged side by side in the middle, the second pipe segment is provided with a C-shaped segment, a transverse steel ring beam and a connecting segment, one side of the C-shaped segment is provided with an opening, the transverse steel ring beam is embedded at both ends of the opening of the C-shaped segment, and the transverse steel ring beam is also connected to the main reinforcement in the C-shaped segment by welding tie bars, the connecting segment is hermetically clamped between the two transverse steel ring beams; a plurality of connecting grooves are arranged at intervals on the inner wall of the transverse steel ring beam, and a plurality of connecting grooves are also arranged on the inner walls of the upper and lower ends of the connecting segment, and the connecting grooves at both ends of the connecting segment communicate with the connecting grooves of the corresponding side transverse steel ring beam through bolt holes, and the connecting segment and the transverse steel ring beam are fixedly connected by bolts inserted into the bolt holes.

[0007] Further, the connecting segment is a cast iron segment, and a material-saving groove is also arranged on its inner wall.

[0008] Further, the pipe segment also includes a first pipe segment located on the left side of all the second pipe segments, the first pipe segment is annular, and a notch portion with the same elevation as the opening of the C-shaped segment is provided at its right end, and a longitudinal steel ring beam is embedded at the notch portion of the first pipe segment.

[0009] Further, the upper and lower surfaces and the left side wall of the longitudinal steel ring beam are all connected to the main reinforcement in the first pipe segment by welding tie bars.

[0010] Further, connecting grooves are also arranged on the inner walls of the upper and lower ends of the longitudinal steel ring beam, and the connecting grooves are centered with the connecting grooves on the transverse steel ring beam, and the second pipe segment and the first pipe segment are fixedly connected by bolts inserted into the connecting grooves of the longitudinal steel ring beam and the connecting grooves of the adjacent second pipe segment.

[0011] Further, the pipe segment also includes a third pipe segment located on the right side of all the second pipe segments, the third pipe segment has the same structure as the first pipe segment, and the two are symmetrically installed.

[0012] Further, the first pipe segment, the second pipe segment and the third pipe segment are all rectangular pipe segments.

[0013] Compared with the prior art, in the present utility model, when the pipe segments are prefabricated, the openings for lateral tunneling are pre-retained on the pipe segments in a prefabricated form, the transverse steel ring beam and the longitudinal steel ring beam are embedded in the corresponding pipe segment opening or notch portions in an embedded form, and after the pipe segments are assembled, the transverse steel ring beam and the longitudinal steel ring beam enclose to form the periphery of the opening, and the opening is sealed with a connecting segment, thus facilitating the construction of lateral tunneling of the jacking pipe, with simple operation, cost saving, reduced construction period, improved work efficiency and safety.

[0014] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Brief Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the detachable jacking pipe section of the present utility model;

[0016] Figure 2 It is a schematic transverse structural diagram of the second pipe section of the present utility model;

[0017] Figure 3 It is a schematic longitudinal structural diagram of the second pipe section of the present utility model;

[0018] Figure 4 It is a schematic structural diagram of the first pipe section of the present utility model.

[0019] The reference numerals and their corresponding names in the figure are as follows:

[0020] 1. First pipe section, 11. Longitudinal steel ring beam, 2. Second pipe section,

[0021] 21. C-shaped segment, 22. Transverse steel ring beam, 23. Connecting segment,

[0022] 231. Material-saving groove, 3. Third pipe section, 4. Tie bar,

[0023] 5. Connecting groove, 6. Bolt. Detailed Description of the Embodiments

[0024] As Figure 1 shown, a detachable jacking pipe section structure for lateral opening of a tunnel includes a plurality of pipe sections that are sequentially sealed and fixedly connected to form the pipe body at the lateral opening of the tunnel. Among them, the pipe sections at this location include one or more second pipe sections 2 arranged side by side in the middle, a first pipe section 1 on the left side of all the second pipe sections 2, and a third pipe section 3 on the right side of all the second pipe sections 2. In this embodiment, the first pipe section 1, the second pipe section 2, and the third pipe section 3 are all rectangular pipe sections.

[0025] As Figure 2 , 3As shown in the figure, the second pipe segment 2 is provided with C-shaped segments 21, transverse steel ring beams 22 and connecting segments 23. One side of the C-shaped segment 21 is provided with an opening. The transverse steel ring beams 22 are embedded at both ends of the opening of the C-shaped segment 21. The transverse steel ring beams 22 are also connected to the main reinforcement bars inside the C-shaped segment 21 through welded tie bars 4. The connecting segments 23 are hermetically clamped between the two transverse steel ring beams 22. A plurality of connecting grooves 5 are arranged at intervals on the inner wall of the transverse steel ring beams 22. A plurality of corresponding connecting grooves 5 are also arranged on the inner walls of the upper and lower ends of the connecting segments 23. The connecting grooves 5 at both ends of the connecting segments 23 are communicated with the connecting grooves 5 of the corresponding transverse steel ring beams 22 on the corresponding side through bolt holes 6. The connecting segments 23 and the transverse steel ring beams 22 are fixedly connected by bolts 6 inserted into the bolt holes 6. The connecting segments 23 are cast iron segments, and a material-saving groove 231 is also arranged on the inner wall thereof.

[0026] In the utility model, the upper and lower ends of the connecting segments of the second pipe segment are connected with the embedded transverse steel ring beams by bolts between the connecting grooves, which is convenient for installation and easy to disassemble; the bolt connection can ensure the close contact and sufficient mechanical strength between the segments, meeting the requirements of structural stability and load bearing. The welded tie bars on the transverse steel ring beams of the second pipe segment are connected with the main reinforcement bars inside the pipe segment; the internal steel bars of the pipe jacking pipe segment and the external steel ring beams are closely connected into a whole, improving the integrity and seismic resistance of the structure; at the same time, the tie bars can also disperse and transfer the load to a certain extent, enhancing the load-bearing capacity of the structure. The cast iron segments are used as the connecting segments for plugging the reserved holes, and the material-saving grooves are arranged, which not only reduces the weight of the cast iron segments, but also ensures that they have sufficient strength. The disassembled cast iron segments can also be reused or remade.

[0027] As Figure 4 shown in the figure, both the first pipe segment 1 and the third pipe segment 3 are annular, with the same structure and symmetrically installed with each other. Among them, the right end of the second pipe segment 2 is provided with a notch at the same elevation as the opening of the C-shaped segment 21. A longitudinal steel ring beam 11 is embedded at the notch of the first pipe segment 1. The upper and lower surfaces and the left side wall of the longitudinal steel ring beam 11 are all connected to the main reinforcement bars inside the first pipe segment 1 through welded tie bars 4. Connecting grooves 5 are also arranged on the inner walls of the upper and lower ends of the longitudinal steel ring beam 11, and the connecting grooves 5 are aligned with the connecting grooves 5 on the transverse steel ring beam 22. The second pipe segment 2 and the first pipe segment 1 are fixedly connected by bolts 6 passing through the connecting grooves 5 of the longitudinal steel ring beam 11 and the connecting grooves 5 on the adjacent second pipe segment 2.

[0028] In the utility model, notches are arranged in the first pipe segment and the third pipe segment, and longitudinal steel ring beams are embedded. Connecting grooves are arranged on the inner walls of the upper and lower ends of the longitudinal steel ring beams and are connected to the transverse steel ring beams of the second pipe segment by bolts to form a ring beam, and a reserved hole for lateral opening of the tunnel is formed inside, which facilitates the construction of the lateral opening of the tunnel, avoids or reduces the damage to the existing pipe segments, reduces the construction cost, shortens the construction period, and improves the construction efficiency and safety.

[0029] The utility model is not limited to the above specific embodiments. For those of ordinary skill in the art, various changes made without creative efforts starting from the above concepts fall within the protection scope of the utility model.

Claims

1. A detachable pipe-joint structure for lateral tunnel opening, comprising a plurality of pipe-joints which are sealed and fixedly connected in sequence; characterized in that: The pipe segment includes one or more second pipe segments arranged side by side in the middle, the second pipe segment is provided with a C-shaped pipe segment, a transverse steel ring beam and a connecting pipe segment, an opening is provided on one side of the C-shaped pipe segment, the transverse steel ring beam is pre-buried at both ends of the opening of the C-shaped pipe segment, the transverse steel ring beam is also connected to the main reinforcement in the C-shaped pipe segment through welded tie bars, and the connecting pipe segment sealing clamp is arranged between the two transverse steel ring beams; a plurality of connecting grooves are arranged at intervals on the inner wall of the transverse steel ring beam, and a plurality of connecting grooves are also arranged on the inner wall of the upper and lower ends of the connecting pipe segment, the connecting grooves at both ends of the connecting pipe segment are connected with the connecting grooves of the transverse steel ring beam on the corresponding side through bolt holes, and the connecting pipe segment and the transverse steel ring beam are fixedly connected by bolts inserted in the bolt holes.

2. The detachable jacking pipe segment structure for lateral tunnel opening according to claim 1 is characterized in that: The connecting pipe segment is a cast iron pipe segment, and a material saving groove is arranged on the inner wall of the connecting pipe segment.

3. The detachable pipe jacking section structure for lateral tunnel opening according to claim 1 is characterized in that: The pipe segment also includes a first pipe segment located on the left side of all the second pipe segments. The first pipe segment is annular and has a notch at the right end with the same elevation as the C-shaped pipe segment opening. A longitudinal steel ring beam is pre-buried in the notch of the first pipe segment.

4. The detachable pipe jacking section structure for lateral tunnel opening according to claim 3 is characterized in that: The upper and lower surface walls and the left side wall of the longitudinal steel ring beam are connected to the main reinforcement in the first pipe section through welded reinforcement.

5. The detachable pipe jacking section structure for lateral tunnel opening according to claim 3 is characterized in that: The inner walls of the upper and lower ends of the longitudinal steel ring beam are also provided with connecting grooves, and the connecting grooves are aligned with the center of the connecting grooves on the transverse steel ring beam. The second pipe section is fixedly connected to the first pipe section by bolts passing through the connecting grooves of the longitudinal steel ring beam and the connecting grooves on the adjacent second pipe sections.

6. The detachable pipe jacking section structure for lateral tunnel opening according to claim 3 is characterized in that: The pipe segment also includes a third pipe segment located on the right side of all the second pipe segments. The third pipe segment has the same structure as the first pipe segment, and the two are symmetrically installed.

7. The detachable pipe jacking section structure for lateral tunnel opening according to claim 6 is characterized in that: The first pipe section, the second pipe section and the third pipe section are all rectangular pipe sections.

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