Pipe piece, pipe piece assembling ring set and tunnel structure

Abstract

The utility model provides a pipe piece, a pipe piece assembling ring set and a tunnel structure, and relates to the technical field of tunnel construction. The pipe piece comprises a pipe piece body and a plurality of pipe pieces, wherein the pipe piece body is used for being spliced to form at least part of a pipe piece splicing ring group; and the splicing protection part is arranged on the edge of the inner arc surface of the duct piece body and is arranged in the axial direction of the duct piece body. The duct piece is convenient to assemble, and is not easy to break when being assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, and in particular to a pipe segment, a pipe segment assembly ring group, and a tunnel structure. Background Art

[0002] With the continuous expansion of urban construction, major cities across China have begun developing subways and urban underground spaces, as well as upgrading their water supply and drainage systems. Shield tunneling technology is a widely used construction method for underground tunnels. Segments are key components in shield construction and serve as the tunnel's inner barrier, resisting soil pressure, groundwater pressure, and certain special loads. As the permanent lining structure of shield tunnels, segments are directly related to the overall quality and safety of the tunnel, impacting its waterproofing and durability.

[0003] Currently, the lining used in existing shield tunneling techniques primarily consists of precast concrete segments. This existing technology presents a problem: the concrete segments can be bumped during assembly, causing cracks and even breakage. In particular, the capping segment is the last piece to be assembled, and the order and angle of assembly make it more susceptible to bumps and dents.

[0004] Therefore, how to provide a pipe segment that is easy to assemble and not easily damaged has become a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] The technical problem solved by the utility model is: how to provide a pipe segment which is easy to assemble and not easy to be damaged.

[0006] In order to solve the above problems, the utility model provides a pipe segment, which includes: a pipe segment body, which is used to be assembled to form at least part of a pipe segment assembly ring group; an assembly protection part, which is arranged on the edge of the inner arc surface of the pipe segment body and arranged along the axial direction of the pipe segment body.

[0007] The utility model installs the assembly protection part on the edge of the inner arc surface of the segment body and arranges it along the axial direction of the segment body. Therefore, whether it is a standard block, a capping block or a connecting block, the assembly protection part can effectively protect the segment body during segment assembly, preventing the concrete structure of the segment body from being broken, chipped or damaged due to collision.

[0008] In any of the above-mentioned technical solutions of the present invention, at least part of the assembled protection part is formed into a strip structure and extends continuously along the axial direction of the tube segment body; or at least part of the assembled protection part is formed into a block structure, and a plurality of assembled protection parts are dispersed and spaced along the axial direction of the tube segment body.

[0009] The assembled protection portion extending continuously along the axial direction of the segment body is more stable and has better structural strength, and can continuously provide protection for the edge of the segment body. Providing multiple assembled protection portions on one edge at dispersed intervals helps reduce costs.

[0010] In any of the above technical solutions of the present invention, the assembled protection part includes: a guard plate, which is attached to the inner arc surface; and a connector, which connects and fixes the guard plate to the pipe segment body.

[0011] The guard plate is used to protect the pipe segment, and the connector is used to install and fix the guard plate.

[0012] In any of the above technical solutions of the present invention, the segment body is formed by casting, and the guard plate and the connecting piece are embedded in the interior of the segment body.

[0013] Such a structure and installation method enables the assembled protection part to be stably connected to the pipe segment body in a simple installation and fixing method.

[0014] In any of the above technical solutions of the present invention, the connecting member is a bolt, and the guard plate and the connecting member are connected to each other by welding.

[0015] The guard plate and the connecting piece are welded to form an integrated assembled protection part. The connection between the guard plate and the connecting piece is firm, and the structural strength of the assembled protection part is higher.

[0016] In any of the above technical solutions of the present invention, the angle between the end face of the segment body and the inner arc surface is greater than or equal to 90°, and the guard plate and the connecting piece are perpendicular to each other.

[0017] The guard plates and connectors that are vertically connected to each other can form an assembled protection part with a more stable structure.

[0018] In any of the above-mentioned technical solutions of the present invention, the angle between the end face and the inner arc surface of the pipe segment body is less than 90°, the guard plate and the connecting piece are inclined to each other, and the connecting piece is tilted away from the end face, and the side of the guard plate close to the end face is provided with a chamfer that is adapted to the pipe segment body.

[0019] The guard plate and the connector are tilted toward each other, with the connector tilted away from the end face, thus preventing the assembled protective portion from colliding with the end face of the segment body. Chamfering can also prevent interference between the segments during assembly, reducing the difficulty of assembly.

[0020] In any of the above technical solutions of the present invention, the material of the assembling protection part is metal.

[0021] The metal assembly protection part has higher strength.

[0022] The utility model also provides a pipe segment assembly ring group, which includes: a pipe segment according to any of the above technical solutions.

[0023] The pipe segment assembly ring group of the present invention includes pipe segments as in any of the above technical solutions, and therefore has all the beneficial effects of the pipe segments as in any of the above technical solutions, which will not be described in detail here.

[0024] The present utility model also provides a tunnel structure, which includes: a plurality of segment assembly ring groups arranged along the axial direction; wherein, at least one of the plurality of segment assembly ring groups is a segment assembly ring group as described in any of the above technical solutions.

[0025] The tunnel structure of the present invention includes the pipe segments of any of the above technical solutions, so it has all the beneficial effects of the pipe segments of any of the above technical solutions, which will not be repeated here.

[0026] Beneficial effects

[0027] The pipe segment of the present invention comprises a pipe segment body for being assembled to form a pipe segment assembly ring group, and an assembly protection portion. Because the assembly protection portion is disposed on the edge of the inner curved surface of the pipe segment body and arranged axially along the pipe segment body, it protects the pipe segment body. This prevents the pipe segment body from being damaged by collisions with other pipe segments during assembly, as well as from chipping, cracking, and other problems. Accordingly, because the assembly protection portion protects the pipe segment body, the pipe segment of the present invention is more easily assembled, reducing the difficulty of assembly operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the cross-sectional structure of a pipe segment according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic structural diagram of one side of the inner curved surface of a tube segment according to an embodiment of the present invention;

[0030] Figure 3 This is one of the structural diagrams of the assembled protection portion of one embodiment of the utility model;

[0031] Figure 4 This is the second structural diagram of the assembled protection portion of one embodiment of the utility model;

[0032] Figure 5 This is a schematic cross-sectional structural diagram of a pipe segment according to another embodiment of the present invention;

[0033] Figure 6 This is a structural schematic diagram of one side of the inner curved surface of a tube segment in another embodiment of the present invention;

[0034] Figure 7 This is a structural diagram of an assembly protection portion according to another embodiment of the present invention.

[0035] Description of reference numerals:

[0036] Segment body: 100; inner arc surface: 110; end face: 120; hand hole: 130; grouting hole: 140; bolt: 150; assembly protection part: 200; guard plate: 210; connecting piece: 220; chamfer: C. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0038] Whether it's a railway tunnel, highway tunnel, underwater tunnel, water conservancy tunnel, mining tunnel, or a tunnel for urban infrastructure construction like water supply, power supply, rail transit, pipeline corridors, and sewage treatment, all tunnels constructed using the shield method require a lining structure. Currently, the lining used in existing technologies for shield tunneling primarily consists of precast concrete or steel segments. Multiple segments are assembled radially to form annular rings, and these rings are then arranged axially to form the tunnel lining structure.

[0039] In the assembly ring group formed by the pipe segments, the various pipe segments including standard blocks, capping blocks and connecting blocks need to be spliced ​​together. Specifically, the standard block is a pipe segment with standard size, generally in multiple numbers, and in the shape of a fan ring, with its two end sections coinciding with the radial direction of the pipe segment. The capping block is the last capping pipe segment to be built in (also called a K block), and its shape is similar to a fan ring. In order to facilitate construction, the cross-sections at both ends are inclined relative to the radial direction of the pipe segment, and the inner periphery extends to both sides, while the outer periphery shrinks and shortens toward the middle. The connecting block is used to connect the standard block and the capping block. The shape of one end of the connecting block is adapted to the standard block, and the shape of the other end is adapted to the capping block. Accordingly, a complete assembly ring group requires a capping block, two connecting blocks located on both sides of the capping block, and several standard blocks.

[0040] During the segment assembly process, adjacent segments are prone to collision. In particular, the capping block, which is installed last, can easily squeeze the surrounding connecting blocks during assembly. Existing segments are often cast in concrete, which can be subject to external forces, causing cracks, chipping, and damage.

[0041] In order to solve the above technical problems, the present invention provides a pipe segment, such as Figure 1 and Figure 2As shown, the segment includes: a segment body 100, which is used to be assembled to form at least part of a segment assembly ring group; an assembly protection part 200, which is arranged on the edge of the inner arc surface 110 of the segment body 100 and is arranged along the axial direction of the segment body 100.

[0042] In the above technical solution, the segments can be standard blocks, capping blocks or connecting blocks. The function of the assembly protection part 200 is to protect the segment body 100 and prevent it from being broken or chipped due to collision with other segments during assembly. The segment body 100 has a ring-sector structure, the inner side of which is formed as an inner arc surface 110, and the two sides of the inner arc surface 110 are formed as end surfaces 120. For adjacent segments, the two segment bodies 100 are connected by bolts 150 and nuts. The inner arc surface 110 of the segment body 100 is provided with a hand hole 130, which is used to provide the space required for installing the nut. The segment cast by materials such as concrete is also provided with a grouting hole 140.

[0043] After the segments are assembled, the end faces 120 of the segment body 100 are in contact with and interconnected with the end faces of other segments, and the inner curved surface 110 forms the inner wall of the tunnel lining. To achieve this protective effect, the present invention provides an assembly protection portion 200 positioned at the edge of the inner curved surface 110 of the segment body 100, arranged axially along the segment body 100. Thus, whether the segment is a standard segment, a capping segment, or a connecting segment, the assembly protection portion 200 effectively protects the segment body 100 during segment assembly, preventing the concrete structure of the segment body 100 from being chipped, chipped, or damaged due to collisions.

[0044] It should be noted that the assembling protection part 200 can be as follows Figure 1 As shown, it is arranged on one side of the tube body 100, or it can be arranged as shown. Figure 5 As shown, they are arranged on both sides of the tube segment body 100.

[0045] In some embodiments of the present invention, Figure 2 and 3 As shown, at least a portion of the assembled protective portion 200 is formed into a strip-shaped structure and extends continuously along the axial direction of the segment body 100. The width of the strip structure can be selected and adjusted by those skilled in the art based on actual needs, while the length of the strip structure is determined by the shape and dimensions of the segment body 100. The assembled protective portion 200 extending continuously along the axial direction of the segment body 100 is more stable and has greater structural strength, providing continuous protection at the edge of the segment body 100.

[0046] In some embodiments of the present invention, at least a portion of the assembly protection portion 200 is formed into a block structure, and a plurality of assembly protection portions 200 are spaced apart axially along the segment body 100. Specifically, the assembly protection portion 200 can be a square block structure, a circular block structure, or other shapes such as an elliptical or polygonal shape. Providing multiple, spaced apart assembly protection portions 200 on one edge can help reduce costs.

[0047] To facilitate installation of the assembled protection part 200, the assembled protection part 200 of the present invention includes: a guard plate 210, which is attached to the inner curved surface 110; and a connector 220, which connects and fixes the guard plate 210 to the segment body 100. The guard plate 210 is used to protect the segment, and the connector 220 is used to install and fix the guard plate 210.

[0048] Preferably, the segment body 100 of the present invention is formed by casting, and it can be cast using materials such as concrete and cement. A steel cage is provided inside the segment body 100 to enhance its strength. During the casting process, the guard plate 210 can be installed and fixed by inserting the connector 220 into the cast body of the segment body 100, so that the guard plate 210 and the connector 220 can be embedded in the interior of the segment body 100. There is a smooth transition between the surface of the guard plate 210 and the inner arc surface 110. Such a structure and installation method enable the assembled protection part 200 to achieve a stable connection with the segment body 100 in a simple installation and fixing method.

[0049] For example, Figure 5 and 7 As shown, the connecting member 220 is specifically a bolt, and the guard plate 210 and the connecting member 220 are connected to each other by welding. As a result, the guard plate 210 and the connecting member 220 are welded to form an integrated assembled protective part 200, and the connection between the guard plate 210 and the connecting member 220 is stable, and the structural strength of the assembled protective part 200 is higher.

[0050] like Figure 1 、 Figure 3 and Figure 4 As shown, in one embodiment of the present invention, the angle between the end surface 120 and the inner arc surface 110 of the segment body 100 is greater than or equal to 90°. In this case, the guard plate 210 and the connector 220 are perpendicular to each other. The perpendicular connection of the guard plate 210 and the connector 220 creates a more stable assembled protective portion 200. It should be understood that the term "perpendicular" refers to nearly perpendicular or near perpendicular, and errors caused by the manufacturing process are within the scope of protection of the present invention.

[0051] like Figure 5 、 Figure 6 and Figure 7As shown, in another embodiment of the present invention, the angle between the end face 120 of the segment body 100 and the inner curved surface 110 is less than 90°. In this case, the guard plate 210 and the connector 220 are inclined relative to each other, and the connector 220 tilts away from the end face 120, thereby preventing the assembled protective portion 200 from colliding with the end face 120 of the segment body 100. Taking a stud as an example, the tilting of the connector 220 away from the end face 120 means that the stud gradually tilts toward the centerline of the segment body 100 from its connection end with the guard plate 210 to its head end, forming a structure with an obtuse angle facing the end face 120 and an acute angle facing away from the end face 120. The tilt angle of the connector 220 matches the angle of the end face 120. "Comparison" means that the tilt angle of the connector 220 is the same as or close to the angle of the end face 120.

[0052] like Figure 7 As shown, in some embodiments of the present invention, a chamfer C is provided on one side of the guard plate 210 close to the end face 120 to match the segment body 100. The chamfer C can avoid interference between the segments during assembly, thereby reducing the difficulty of assembly.

[0053] Preferably, the assembling protection part 200 is made of metal. The assembling protection part 200 made of metal has higher strength. Further preferably, the assembling protection part 200 is made of stainless steel.

[0054] Although the present invention is disclosed as above, it is not limited thereto. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope defined by the claims.

Claims

1. A pipe segment, characterized in that: The pipe segment comprises: A segment body (100), wherein the segment body (100) is used to be assembled to form at least a portion of a segment assembly ring group; An assembling protection portion (200) is provided on the edge of the inner arc surface (110) of the tube segment body (100) and is arranged along the axial direction of the tube segment body (100).

2. The tube segment according to claim 1, characterized in that: At least a portion of the assembly protection portion (200) is formed into a strip-shaped structure and extends continuously along the axial direction of the tube segment body (100); or At least a portion of the assembling protection portion (200) is formed into a block structure, and a plurality of the assembling protection portions (200) are dispersed and spaced along the axial direction of the tube segment body (100).

3. The tube segment according to any one of claims 1 or 2, characterized in that: The assembly protection part (200) comprises: a guard plate (210), the guard plate (210) being attached to the inner curved surface (110); A connecting piece (220) is used to connect and fix the guard plate (210) to the tube segment body (100).

4. The tube segment according to claim 3, characterized in that: The segment body (100) is formed by casting, and the guard plate (210) and the connecting piece (220) are embedded in the segment body (100).

5. The tube segment according to claim 3, characterized in that: The connecting member (220) is a bolt, and the guard plate (210) and the connecting member (220) are connected to each other by welding.

6. The tube segment according to claim 3, characterized in that: The angle between the end surface (120) of the tube segment body (100) and the inner arc surface (110) is greater than or equal to 90 degrees, and the guard plate (210) and the connecting member (220) are perpendicular to each other.

7. The tube segment according to claim 3, characterized in that: The angle between the end face (120) of the tube segment body (100) and the inner arc surface (110) is less than 90 degrees, the guard plate (210) and the connecting piece (220) are inclined to each other, and the connecting piece (220) is tilted in a direction away from the end face (120), and a chamfer (C) adapted to the tube segment body (100) is provided on a side of the guard plate (210) close to the end face (120).

8. The tube segment according to any one of claims 1 or 2, characterized in that: The material of the assembling protection part (200) is metal.

9. A segment assembly ring assembly, characterized in that: The segment assembly ring group includes: the segment according to any one of claims 1 to 8.

10. A tunnel structure, characterized in that: The tunnel structure comprises: Multiple segments assembled in an axial arrangement; Wherein, any at least one of the plurality of segment assembly ring groups is the segment assembly ring group according to claim 9.

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