Shield tunnel structure with replaceable duct pieces

Abstract

The utility model relates to the technical field of tunnel maintenance, in particular to a duct piece replaceable type shield tunnel structure which comprises a plurality of standard duct pieces with the inner portions wide and the outer portions narrow, and a plurality of adjacent duct pieces with the outer portions wide and the inner portions narrow are alternately installed between the standard duct pieces with the inner portions wide and the outer portions narrow. The multiple standard pipe pieces with the wide insides and the narrow outsides and the multiple adjacent pipe pieces with the wide outsides and the narrow insides are spliced to form an annular tunnel structure. When the standard duct piece with the wide inside and the narrow outside is taken out inwards, the standard duct piece with the wide inside and the narrow outside cannot abut against the adjacent standard duct piece with the wide inside and the narrow outside, the replaceability of the damaged duct piece is achieved, the damaged duct piece can be directly replaced when the duct piece is damaged, and the safety problem when the duct piece is damaged can be fundamentally solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel maintenance, and particularly relates to a replaceable segment shield tunnel structure. Background Art

[0002] At present, with the improvement of shield technology and equipment and the increasing demand for operation and development, more and more regions are vigorously carrying out tunnel construction. Therefore, the maintenance and safety issues of tunnels need urgent attention. During the operation of tunnels, they may face adverse factors such as severe cold or extreme high temperature, changes in the load of overlying buildings, and disturbances from newly built tunnels, which may cause damage to the segment structure.

[0003] At present, for the damaged segments of the conventional shield tunnel structure, replacement construction cannot be carried out, and only repair and reinforcement can be done. Because the conventional shield tunnel structure is a circular tunnel formed by splicing multiple arc-shaped standard segments. After these arc-shaped standard segments are connected to each other through fixing parts, even if the fixing parts are removed, the standard segments are squeezed against each other and are subject to the extrusion friction force between adjacent segments. As a result, the damaged segments cannot be taken out from the complete circular tunnel structure, and only the damaged segments can be maintained. This maintenance method not only wastes a lot of manpower and material resources but also cannot fundamentally solve the safety problems of the damaged segments. Therefore, the prior art urgently needs a technical solution to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a replaceable segment shield tunnel structure to solve the problems in the prior art.

[0005] To solve the above technical problems, the utility model specifically provides the following technical solutions:

[0006] A segment replaceable shield tunnel structure includes a plurality of inner-wide and outer-narrow standard segments and a plurality of outer-wide and inner-narrow adjacent segments. The plurality of inner-wide and outer-narrow standard segments and the plurality of outer-wide and inner-narrow adjacent segments are alternately installed in sequence. Each inner-wide and outer-narrow standard segment is connected to two adjacent outer-wide and inner-narrow adjacent segments. The plurality of inner-wide and outer-narrow standard segments and the plurality of outer-wide and inner-narrow adjacent segments are spliced with each other to form a circular tunnel structure.

[0007] The inner-wide and outer-narrow standard segment includes a first arc-shaped standard segment. Inner inclined surfaces are provided at both ends of the first arc-shaped standard segment, and the opening of the included angle formed by the two inner inclined surfaces faces away from the axis of the circular tunnel structure. The outer-wide and inner-narrow adjacent segment includes a second arc-shaped standard segment. Outer inclined surfaces for fitting with the inner inclined surfaces are provided at both ends of the second arc-shaped standard segment, and the opening of the included angle formed by the two outer inclined surfaces faces the axis of the circular tunnel structure.

[0008] Based on an optimal solution provided by a segment replaceable shield tunnel structure, the top and bottom of the annular tunnel structure are both composed of standard segments with a wider inner width and a narrower outer width.

[0009] Based on an optimal solution provided by a segment replaceable shield tunnel structure, each of the standard segments with a wider inner width and a narrower outer width and each of the adjacent segments with a wider outer width and a narrower inner width are provided with installation grooves, fixing wire holes are provided in each of the installation grooves, and fixing wires are inserted through the fixing wire holes.

[0010] Based on an optimal solution provided by a segment replaceable shield tunnel structure, bolt holes are provided in each of the installation grooves, and bolts for fixedly connecting the standard segments with a wider inner width and a narrower outer width and the adjacent segments with a wider outer width and a narrower inner width are threadedly connected in the bolt holes.

[0011] Based on an optimal solution provided by a segment replaceable shield tunnel structure, step grooves are provided on the inner wall of each of the installation grooves, and the step grooves are coaxial and communicated with the bolt holes.

[0012] Based on an optimal solution provided by a segment replaceable shield tunnel structure, tenon grooves are provided on both sides of each of the annular tunnel structures, rubber tenon heads are fixedly installed in the tenon grooves, and a plurality of the annular tunnel structures are spliced with each other to form a shield tunnel structure.

[0013] The utility model has the following beneficial effects compared with the prior art: when the standard segment with a wider inner width and a narrower outer width is taken out inward, the standard segment with a wider inner width and a narrower outer width will not be resisted by the adjacent standard segments with a wider inner width and a narrower outer width, realizing the replaceability of damaged segments. When the segments are damaged, the damaged segments can be directly replaced, which can fundamentally solve the safety problem when the segments are damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained according to the provided drawings.

[0015] Figure 1 It is a three-dimensional structure schematic diagram of the present utility model.

[0016] Figure 2 It is a three-dimensional structure schematic diagram of another angle of the present utility model;

[0017] Figure 3 It is a structure schematic diagram of the standard segment with a wider inner width and a narrower outer width of the present utility model;

[0018] Figure 4 is Figure 3 an enlarged schematic view of A in

[0019] Figure 5 a structural schematic diagram of the outer-wide and inner-narrow adjacent segment of the present utility model.

[0020] In the figure: 1. Inner-wide and outer-narrow standard segment; 11. First arc-shaped standard segment; 12. Inner inclined surface; 2. Outer-wide and inner-narrow adjacent segment; 21. Second arc-shaped standard segment; 22. Outer inclined surface; 3. Circular tunnel structure; 4. Installation groove; 5. Fixed wire hole; 6. Bolt hole; 7. Step groove; 8. Rubber tenon; 9. Tenon groove. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Next, the concepts involved in this application will be described first in conjunction with the accompanying drawings. It should be noted here that the following descriptions of each concept are only for making the content of this application easier to understand, and do not represent a limitation on the protection scope of this application; at the same time, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Next, this application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0023] Embodiment

[0024] As Figures 1 to 5 shown, the present utility model provides a segment replaceable shield tunnel structure, including a plurality of inner-wide and outer-narrow standard segments 1 and a plurality of outer-wide and inner-narrow adjacent segments 2, and the plurality of inner-wide and outer-narrow standard segments 1 and the plurality of outer-wide and inner-narrow adjacent segments 2 are alternately installed in sequence. Each inner-wide and outer-narrow standard segment 1 is connected to two adjacent outer-wide and inner-narrow adjacent segments 2, and the plurality of inner-wide and outer-narrow standard segments 1 and the plurality of outer-wide and inner-narrow adjacent segments 2 are spliced with each other to form a circular tunnel structure 3.

[0025] The inner-wide and outer-narrow standard segment 1 includes a first arc-shaped standard segment 11. Both ends of the first arc-shaped standard segment 11 are provided with inner inclined surfaces 12, and the included angle formed by the two inner inclined surfaces 12 opens away from the axis of the circular tunnel structure 3.

[0026] The outer-wide and inner-narrow adjacent segment 2 includes a second arc-shaped standard segment 21. Both ends of the second arc-shaped standard segment 21 are provided with outer inclined surfaces 22 for fitting with the inner inclined surfaces 12, and the included angle formed by the two outer inclined surfaces 22 opens towards the axis of the annular tunnel structure 3.

[0027] The inner-wide and outer-narrow standard segment 1 is arc-shaped, and inner inclined surfaces 12 are formed at both ends thereof. The opening of the included angle formed by the two inner inclined surfaces 12 faces away from the axis of the annular tunnel structure 3. The outer-wide and inner-narrow adjacent segment 2 is arc-shaped, and outer inclined surfaces 22 are formed at both ends thereof. The opening of the included angle formed by the two outer inclined surfaces 22 faces towards the axis of the annular tunnel structure 3. The inner inclined surface 12 and the outer inclined surface 22 are mutually fitted.

[0028] As a further description of this embodiment, in the prior art, for the damaged segments of the conventional shield tunnel structure at present, replacement construction cannot be carried out, and only repair and reinforcement can be carried out. Because such a conventional shield tunnel structure is an annular tunnel formed by splicing a plurality of arc-shaped standard segments. After such arc-shaped standard segments are connected to each other through fixing members, even if the fixing members are removed, the standard segments are mutually extruded and are subject to the extrusion friction force between adjacent segments. As a result, the damaged segment cannot be taken out from the complete annular tunnel structure, and only the damaged segment can be maintained. Such a maintenance method not only wastes a large amount of manpower and material resources, but also cannot fundamentally solve the safety problem of the damaged segment. In this embodiment, a plurality of inner-wide and outer-narrow standard segments 1 and a plurality of outer-wide and inner-narrow adjacent segments 2 are spliced with each other to form an annular tunnel structure 3. When some segments of the annular tunnel structure 3 are damaged, if the damaged one is the inner-wide and outer-narrow standard segment 1, it can be directly removed. If the damaged one is the outer-wide and inner-narrow adjacent segment 2, then after removing the adjacent inner-wide and outer-narrow standard segment 1, the damaged outer-wide and inner-narrow adjacent segment 2 is replaced, and then the replaced new segment is reinstalled. Specifically, because both ends of the inner-wide and outer-narrow standard segment 1 and the outer-wide and inner-narrow adjacent segment 2 are provided with inclined surfaces, and the inner inclined surface 12 and the outer inclined surface 22 are mutually fitted. Therefore, when the inner-wide and outer-narrow standard segment 1 is taken out inward, the inner-wide and outer-narrow standard segment 1 will not be resisted by the adjacent outer-wide and inner-narrow adjacent segment 2, realizing the replaceability of the damaged segment. When the segment is damaged, the damaged segment can be directly replaced, and the safety problem when the segment is damaged can be fundamentally solved.

[0029] Preferably, both the top and the bottom of the annular tunnel structure 3 are composed of inner-wide and outer-narrow standard segments 1.

[0030] As a further explanation of the present embodiment, in the existing tunnel construction, the top and bottom of the annular tunnel are mostly used as the load-bearing body or construction body of the tunnel building. Therefore, the top and bottom of the annular tunnel appear more frequently and are damaged accordingly due to the load or the construction of other buildings. In the present embodiment, the standard inner wide and outer narrow type segment 1 is used as the top and bottom of the annular tunnel to facilitate the direct replacement of the standard inner wide and outer narrow type segment 1 after it is damaged. As a preferred scheme of the present embodiment, a capping block can be set on the top of the annular tunnel to replace the standard inner wide and outer narrow type segment 1, which is used to bear the load or connect the entire annular tunnel structure 3. The capping block has the same structure as the standard inner wide and outer narrow type segment 1, and there is only a difference in size.

[0031] Preferably, each of the standard pipe segments 1 with inner width and outer narrowness and each of the adjacent pipe segments 2 with outer width and inner narrowness are provided with a mounting groove 4, each of the mounting grooves 4 is provided with a fixing wire hole 5, and each of the fixing wire holes 5 is passed through a fixing wire.

[0032] As a further explanation of this embodiment, the fixing wire hole 5 in this embodiment is mainly used for the passage of the fixing wire. The fixing wire is mainly used to connect, support and fix the pipe segment to ensure the stability of the pipe segment structure. During the construction process, the fixing wire needs to connect and support the pipe segment through the fixing wire hole 5.

[0033] Preferably, the mounting grooves 4 are provided with bolt holes 6 , and the bolt holes 6 are threadedly connected with bolts for fixing and connecting the standard inner wide and outer narrow type pipe segment 1 and the outer wide and inner narrow type adjacent pipe segment 2 .

[0034] As a further explanation of this embodiment, the bolt holes 6 in this embodiment are used to further connect and fix the pipe segments. By inserting bolts into the bolt holes 6, the pipe segments are positioned and corrected to ensure the accuracy of the tunnel structure, make the connection between the pipe segments tighter, ensure the sealing between the pipe segments, and avoid water seepage.

[0035] Preferably, a step groove 7 is provided on the inner side wall of the installation groove 4 , and the step groove 7 is coaxial with and connected to the bolt hole 6 .

[0036] Preferably, each of the annular tunnel structures 3 is provided with a mortise and tenon 9 on both sides, and a rubber tenon 8 is fixedly installed in the mortise and tenon 9, and a plurality of the annular tunnel structures 3 are spliced ​​together to form a shield tunnel structure.

[0037] As a further illustration of this embodiment, the mortise and tenon groove 9 in this embodiment is used in conjunction with the rubber tenon 8. When the segment is not cracked by extrusion, the rubber tenon 8 can improve the waterproof effect of the joints between the annular tunnel structures 3, ensuring the dryness and safety inside the tunnel. In addition, when the segment needs to be replaced, the rubber tenon and groove 8 has a certain toughness and will not interfere with the segment during the process of removing or installing the segment, and can also restore the waterproof effect after the segment is installed.

[0038] The above-described embodiments and / or implementation manners are only used to illustrate the preferred embodiments and / or implementation manners for realizing the technology of the present invention, and do not impose any formal restrictions on the implementation manners of the technology of the present invention. Any person skilled in the art, without departing from the scope of the technical means disclosed in the content of the present invention, may make some changes or modifications to other equivalent embodiments, but should still be regarded as the same technology or embodiment as the present invention in essence.

[0039] Specific examples are used in this article to elaborate on the principles and implementation manners of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application. The above are only the preferred implementation manners of this application. It should be noted that due to the limited nature of written expression and the objectively infinite specific structures, for those of ordinary skill in the art, without departing from the principle of this application, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, should all be regarded as the protection scope of this application.

Claims

1. A segment-replaceable shield tunnel structure, comprising a plurality of standard segments (1) with a wide interior and a narrow exterior, and a plurality of adjacent segments (2) with a wide exterior and a narrow interior, characterized in that: A plurality of the inner wide and outer narrow type standard pipe segments (1) and a plurality of the outer wide and inner narrow type adjacent pipe segments (2) are installed alternately in sequence, each of the inner wide and outer narrow type standard pipe segments (1) is connected to two adjacent outer wide and inner narrow type adjacent pipe segments (2), and a plurality of the inner wide and outer narrow type standard pipe segments (1) and a plurality of the outer wide and inner narrow type adjacent pipe segments (2) are spliced ​​together to form an annular tunnel structure (3); The inner wide and outer narrow type standard pipe segment (1) comprises a first arc-shaped standard pipe segment (11), both ends of the first arc-shaped standard pipe segment (11) are provided with inner bevels (12), and the opening of the angle formed by the two inner bevels (12) is away from the axis of the annular tunnel structure (3); the outer wide and inner narrow type adjacent pipe segment (2) comprises a second arc-shaped standard pipe segment (21), both ends of the second arc-shaped standard pipe segment (21) are provided with outer bevels (22) for fitting with the inner bevels (12), and the opening of the angle formed by the two outer bevels (22) is oriented towards the axis of the annular tunnel structure (3).

2. The segment-replaceable shield tunnel structure according to claim 1, characterized in that: The top and bottom of the annular tunnel structure (3) are both composed of standard pipe segments (1) that are wide inside and narrow outside.

3. The segment-replaceable shield tunnel structure according to claim 1, characterized in that: Each of the standard pipe segments (1) with a wide inside and narrow outside and each of the adjacent pipe segments (2) with a wide outside and narrow inside are provided with a mounting groove (4), each of the mounting grooves (4) is provided with a fixing wire hole (5), and each of the fixing wire holes (5) is provided with a fixing wire.

4. The segment-replaceable shield tunnel structure according to claim 3, characterized in that: The mounting grooves (4) are each provided with a bolt hole (6), and the bolt holes (6) are internally threadedly connected with bolts for fixing the inner wide and outer narrow type standard pipe segment (1) and the outer wide and inner narrow type adjacent pipe segment (2).

5. The segment-replaceable shield tunnel structure according to claim 4, characterized in that: A step groove (7) is provided on the inner wall of the installation groove (4), and the step groove (7) is coaxial with and communicates with the bolt hole (6).

6. The segment-replaceable shield tunnel structure according to claim 1, characterized in that: Each of the annular tunnel structures (3) is provided with a mortise and tenon groove (9) on both sides, and a rubber tenon (8) is fixedly installed in each of the mortise and tenon grooves (9). A plurality of the annular tunnel structures (3) are spliced ​​together to form a shield tunnel structure.

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