Subway tunnel lining ring steel pipe piece

Abstract

The utility model provides a subway tunnel lining ring steel pipe piece which comprises a steel pipe piece body, a supporting assembly is arranged on the outer side of the steel pipe piece body, one end of the supporting assembly is hinged to the outer side of the steel pipe piece body, and a pushing assembly is arranged on the steel pipe piece body and corresponds to the middle of the supporting assembly. The end of the pushing assembly is rotationally and slidably connected with the supporting assembly. The pushing assembly is provided with an adjusting bolt arranged in the radial direction of the steel pipe piece body, the adjusting bolt is in threaded connection with the steel pipe piece body, and the end of the adjusting bolt is rotationally and slidably connected with the supporting assembly. According to the utility model, after the steel pipe sheet is installed in the tunnel, the adjusting bolt is screwed, the adjusting bolt is matched with the thread structure between the steel pipe sheet body, the adjusting bolt is driven to move along the axial direction of the steel pipe sheet body, the end part of the adjusting bolt pushes the supporting assembly to swing, and the end part of the supporting assembly abuts against the hard rock of the tunnel; and a support is formed between the steel pipe sheet body and tunnel hard rock.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel lining technology, specifically relating to a ring steel pipe segment for subway tunnel lining. Background Technology

[0002] When the tunnel boring machine (TBM) excavates with a diameter larger than the outer diameter of the tunnel segments, a tail gap (typically 100-200mm) is created. If the grouting during simultaneous injection is not dense enough or the grout has poor fluidity, it cannot fill the gap in time, resulting in a space where buoyancy exists between the tunnel segments and the ground. The buoyancy generated by groundwater or the grout itself will push the tunnel segments upward, causing the misalignment between adjacent rings to exceed the limit, forming a longitudinal stress concentration zone, which can lead to the opening of the ring joints or concrete collapse, weakening the overall stability of the tunnel.

[0003] In the prior art, Chinese utility model patent document with authorization announcement number CN222772226U discloses a shield tunnel segment anti-floating structure. It fixes the segment underground by installing a sleeve valve pipe with a bolt head at a suitable position at the bottom of the tunnel segment before secondary grouting. The grout is then diffused through the pipe wall holes of the sleeve valve pipe. After the grout solidifies, it can bond the outer wall of the sleeve valve pipe with the soft soil layer of the surrounding annular area, thus preventing the segment from floating. However, this method is relatively cumbersome to construct, the grout requires time to solidify, and the construction efficiency is low.

[0004] Therefore, it is necessary to design a type of ring steel segment for subway tunnel lining that can prevent the segments from floating and facilitate construction in order to solve the current technical problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a ring steel segment for subway tunnel lining that can prevent segments from floating and facilitate construction.

[0006] The technical solution of this utility model is as follows: a ring steel pipe segment for subway tunnel lining, comprising a steel pipe segment body, a support assembly provided on the outer side of the steel pipe segment body, one end of the support assembly being hinged to the outer side of the steel pipe segment body, a pushing assembly provided on the steel pipe segment body corresponding to the middle of the support assembly, the end of the pushing assembly being rotatably and slidably connected to the support assembly; the pushing assembly having an adjusting bolt provided radially along the steel pipe segment body, the adjusting bolt being threadedly connected to the steel pipe segment body, and the end of the adjusting bolt being rotatably and slidably connected to the support assembly.

[0007] Furthermore, the support assembly has two parallel support arms, each with a sliding groove. One end of each support arm is hinged to the outer side of the steel pipe body, and a support rod is fixedly disposed between the other ends of the two support arms. A push block is rotatably disposed at the end of the adjusting bolt, and sliding rods corresponding to the sliding grooves are disposed on both sides of the push block. The sliding rods are slidably disposed inside the sliding grooves.

[0008] Furthermore, a limiting plate is fixedly provided at the end of the slide bar, and the limiting plate is a circular plate with a diameter greater than the width of the slide groove.

[0009] Furthermore, an abutment sleeve is fixedly provided on the outer side of the support rod.

[0010] Furthermore, end plates are fixedly installed at both ends of the steel pipe body in the circumferential direction, and connection holes are evenly opened on the end plates.

[0011] Furthermore, side plates are fixedly provided at both ends of the steel tube segment body, and docking posts are evenly provided on the side plate at one end of the steel tube segment body along the axial direction, while docking holes matching the docking posts are provided on the side plate at the other end of the steel tube segment body along the axial direction.

[0012] Furthermore, the outer side of the mating post is provided with external threads, and the end of the mating post has a chamfer.

[0013] Furthermore, an axial support plate is uniformly arranged on the inner side of the steel pipe segment body along its axial direction, and a circumferential support plate is uniformly arranged on the inner side of the steel pipe segment body along its circumferential direction.

[0014] The beneficial effects of this utility model are:

[0015] (1) In this utility model, after the steel pipe segment is installed inside the tunnel, the adjusting bolt is screwed on. The thread structure between the adjusting bolt and the steel pipe segment body is matched, driving the adjusting bolt to move along the axial direction of the steel pipe segment body. The end of the adjusting bolt pushes the support component to swing. The end of the support component abuts against the tunnel hard rock, forming a support between the steel pipe segment body and the tunnel hard rock.

[0016] (2) The end of the push component makes line contact with the tunnel hard rock, forming a stable support between the steel pipe body 1 and the tunnel hard rock. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0018] Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 2 .

[0019] Figure 3 This is a schematic diagram of the support component in this utility model. Detailed Implementation

[0020] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are not intended to limit the present invention or its application or use in any way. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0021] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figures 1 to 3 As shown, a subway tunnel lining ring steel segment includes a steel segment body 1. A support assembly 2 is provided on the outer side of the steel segment body 1, and one end of the support assembly 2 is hinged to the outer side of the steel segment body 1. A pushing assembly 3 is provided on the steel segment body 1 corresponding to the middle of the support assembly 2. The end of the pushing assembly 3 is slidably connected to the support assembly 2. The pushing assembly 3 has an adjusting bolt 34 arranged radially along the steel segment body 1. The adjusting bolt 34 is threadedly connected to the steel segment body 1, and the end of the adjusting bolt 34... The part is rotatably and slidably connected to the support assembly 2. In this embodiment, after the steel pipe segment is installed inside the tunnel, the adjusting bolt 34 is screwed on. The threaded structure between the adjusting bolt 34 and the steel pipe segment body 1 is engaged, driving the adjusting bolt 34 to move along the axial direction of the steel pipe segment body 1. The end of the adjusting bolt 34 pushes the support assembly 2 to swing. The end of the support assembly 2 abuts against the tunnel hard rock, forming a support between the steel pipe segment body 1 and the tunnel hard rock. The end 3 of the pushing assembly makes line contact with the tunnel hard rock, forming a stable support between the steel pipe segment body 1 and the tunnel hard rock.

[0023] In some embodiments, the support assembly 2 has two parallel support arms 21, each with a groove 22. One end of each support arm 21 is hinged to the outer side of the steel pipe segment body 1, and a support rod 23 is fixedly provided between the other ends of the two support arms 21. The two support arms 21 are fixedly connected together by the support rod 23, ensuring the stability of the two support arms 21. A push block 33 is rotatably provided at the end of the adjusting bolt 34. A slide rod 31 corresponding to the groove 22 is provided on both sides of the push block 33. The slide rod 31 is slidably disposed inside the groove 22. Tightening the adjusting bolt 34 engages with the threaded structure between the adjusting bolt 34 and the steel pipe segment body 1, causing the adjusting bolt 34 to move axially along the steel pipe segment body 1. The adjusting bolt 34 drives the push block 33 to move, and the push block 33 drives the support arm 21 to swing through the slide rod 31, so that one end of the support arm 21 abuts against the hard rock of the tunnel for support.

[0024] In some embodiments, a limiting plate 32 is fixedly provided at the end of the slide rod 31. The limiting plate 32 is a circular plate with a diameter greater than the width of the slide groove 22. The limiting function of the limiting plate 32 can prevent the end of the slide rod 31 from slipping out of the interior of the slide groove 22 and ensure the stability of the movement of the slide rod 31. Specifically, the outer diameter of the limiting plate 32 is 1 to 3 cm larger than the width of the slide groove 22.

[0025] In some embodiments, an abutment sleeve 24 is fixedly provided on the outer side of the support rod 23, and the abutment sleeve 24 is used to abut against the hard rock of the tunnel.

[0026] In some embodiments, end plates 12 are fixedly provided at both ends of the steel pipe body 1 in the circumferential direction. Connection holes 17 are evenly provided on the end plates 12. The end plates 12 of two adjacent steel pipe bodies 1 are assembled and fixed by a bolt and nut mechanism.

[0027] In some embodiments, side plates 11 are fixedly provided at both ends of the steel tube body 1 along the axial direction. A butt joint post 16 is uniformly provided on the side plate 11 at one end of the axial direction of the steel tube body 1, and a butt joint hole 15 matching the butt joint post 16 is provided on the side plate 11 at the other end of the axial direction of the steel tube body 1. When two adjacent steel tube bodies 1 are butted together, the butt joint post 16 and the butt joint hole 15 are inserted together.

[0028] In some embodiments, the outer side of the docking post 16 is provided with external threads, and the end of the docking post 16 is chamfered. The chamfer facilitates the insertion of the docking post 16 into the docking hole 15. Then, a nut is installed on the docking post 16 to fix the connection between the two steel pipe sections.

[0029] In some embodiments, an axial support plate 14 is uniformly arranged on the inner side of the steel pipe segment body 1 along its axial direction, and a circumferential support plate 13 is uniformly arranged on the inner side of the steel pipe segment body 1 along its circumferential direction. The axial support plate 14 and the circumferential support plate 13 are both welded and fixed to the inner side of the steel pipe segment body 1, thereby improving the strength of the steel pipe segment.

[0030] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0031] The embodiments described above only illustrate some implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A metro tunnel lining ring steel segment, characterized in that: The device includes a steel pipe segment body, a support assembly is provided on the outer side of the steel pipe segment body, one end of the support assembly is hinged to the outer side of the steel pipe segment body, a pushing assembly is provided on the steel pipe segment body corresponding to the middle of the support assembly, the end of the pushing assembly is rotatably and slidably connected to the support assembly; the pushing assembly has an adjusting bolt provided radially along the steel pipe segment body, the adjusting bolt is threadedly connected to the steel pipe segment body, and the end of the adjusting bolt is rotatably and slidably connected to the support assembly.

2. The subway tunnel lining ring steel segment according to claim 1, characterized in that: The support assembly has two parallel support arms with grooves on them. One end of each support arm is hinged to the outside of the steel pipe body, and a support rod is fixedly installed between the other ends of the two support arms. A push block is rotatably installed at the end of the adjusting bolt, and slide rods corresponding to the grooves are installed on both sides of the push block. The slide rods are slidably installed inside the grooves.

3. The subway tunnel lining ring steel segment according to claim 2, characterized in that: A limiting plate is fixedly provided at the end of the slide bar. The limiting plate is a circular plate with a diameter greater than the width of the slide groove.

4. The subway tunnel lining ring steel segment according to claim 2, characterized in that: An abutment sleeve is fixedly installed on the outer side of the support rod.

5. The subway tunnel lining ring segment of steel pipe as claimed in claim 1, characterized in that: Both ends of the steel pipe body are fixedly provided with end plates, and the end plates are evenly provided with connection holes.

6. The subway tunnel lining ring steel segment according to claim 1, characterized in that: Side plates are fixedly provided at both ends of the steel pipe segment body. A butt joint post is evenly provided on the side plate at one end of the steel pipe segment body along the axial direction. A butt joint hole matching the butt joint post is provided on the side plate at the other end of the steel pipe segment body along the axial direction.

7. The subway tunnel lining ring steel segment according to claim 6, characterized in that: The outer side of the mating post is provided with external threads, and the end of the mating post is chamfered.

8. The ring steel segment lining for subway tunnels according to claim 1, characterized in that: An axial support plate is uniformly arranged along the axial direction on the inner side of the steel pipe segment body, and a circumferential support plate is uniformly arranged along the circumferential direction on the inner side of the steel pipe segment body.

Images