Lightweight tunnel segment support structure

Abstract

The present invention discloses a light tunnel segment support structure, which relates to the field of subway tunnel construction, and comprises: a plurality of gate arch assemblies arranged along the length direction of the tunnel segment, the gate arch assemblies comprising a first upper arc support beam and a first lower arc support beam symmetrically arranged up and down, and the opposite ends of the first upper arc support beam and the first lower arc support beam are respectively connected by a first support structure; a side door assembly arranged at the opening position of the tunnel segment and arranged between two adjacent gate arch assemblies, the side door assembly comprising a second upper arc support beam and a second lower arc support beam symmetrically arranged up and down, and the ends of the second upper arc support beam and the second lower arc support beam away from the opening are connected by a second support structure. Compared with the tic-tac-toe space steel frame, the light tunnel segment support structure is designed and optimized based on the stress characteristics of the tunnel segment, and is more lightweight and easy to assemble while ensuring rigidity and bearing capacity.

Description

Technical Field

[0001] The invention relates to the field of subway tunnel construction, and in particular to a light tunnel segment supporting structure. Background Art

[0002] In order to meet the requirements of subway fire prevention, drainage, personnel evacuation and rescue, a connecting channel is required every 600 meters in the subway shield tunnel section to connect the double-track tunnels. During the construction of the connecting channel, it is necessary to partially cut and remove the existing tunnel segments at the location of the connecting channel to form a hole. This hole-breaking construction process will lead to the redistribution of tunnel segment stress and the reduction of bearing capacity. In order to ensure the force safety of the structure, it is necessary to take support measures for the tunnel segments before the tunnel segment hole construction.

[0003] The current tunnel segment support measures are mainly a crisscross spatial steel frame structure composed of steel sections. In order to have sufficient bearing capacity and rigidity, this structure is often bulky, and the steel sections are not only large in number but also large in size, which makes assembly very inconvenient and affects the construction period.

[0004] Therefore, how to provide a lightweight tunnel segment support structure that is easy and convenient to assemble has become a problem that urgently needs to be solved by technical personnel in this field. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a lightweight tunnel segment support structure which is easy and convenient to assemble.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a light tunnel segment support structure comprising: a plurality of gate arch assemblies arranged along the length direction of the tunnel segment, the gate arch assemblies comprising a first upper arc-shaped support beam, a first lower arc-shaped support beam and two first support structures, the first upper arc-shaped support beam and the first lower arc-shaped support beam are symmetrically arranged up and down, the first upper arc-shaped support beam and the first lower arc-shaped support beam are both in contact with the inner wall of the tunnel segment, the opposite ends of the first upper arc-shaped support beam and the first lower arc-shaped support beam are respectively connected by one of the first support structures, each of the first support structures is against the inner wall of the tunnel segment, and each of the first support structures is connected to the middle part of the first upper arc-shaped support beam; a side door assembly, the side door assembly is arranged between two adjacent The side door assembly is arranged between the gate arch assemblies, and the side door assembly is arranged at the opening position of the tunnel segment, the side door assembly comprises a second upper arc support beam, a second lower arc support beam and a second support structure, the second upper arc support beam and the second lower arc support beam are symmetrically arranged up and down, the second upper arc support beam and the second lower arc support beam are both in contact with the inner wall of the tunnel segment, the second upper arc support beam and the second lower arc support beam are connected at one end away from the opening by the second support structure, the second support structure is against the inner wall of the tunnel segment, and the two first support structures on the same side of the opening in the two gate arch assemblies adjacent to the side door assembly are both connected to the end of the second upper arc support beam close to the opening.

[0008] Preferably, the lightweight tunnel segment support structure also includes a longitudinal beam assembly, which includes a plurality of longitudinal connecting beams, and any two adjacent first upper arc-shaped support beams, any two adjacent first lower arc-shaped support beams, any two adjacent first support structures, between the second support structure and the first support structure adjacent thereto, between the second upper arc-shaped support beam and the first upper arc-shaped support beam adjacent thereto, and between the second lower arc-shaped support beam and the first lower arc-shaped support beam adjacent thereto are all connected by the longitudinal connecting beams.

[0009] Preferably, the first supporting structure includes a first upper column, a first telescopic device and a first lower column connected in sequence, the first upper column is connected to one end of the first upper arc-shaped support beam, and the second lower column is connected to one end of the first lower arc-shaped support beam; the second supporting structure includes a second upper column, a second telescopic device and a second lower column connected in sequence, the second upper column is connected to one end of the second upper arc-shaped support beam, and the second lower column is connected to one end of the second lower arc-shaped support beam.

[0010] Preferably, the first supporting structure also includes a first diagonal bracing beam, one end of which is connected to the first upper column, and the other end is connected to the middle part of the first upper arc-shaped supporting beam; the second supporting structure also includes a second diagonal bracing beam, one end of which is connected to the second upper column, and the other end is connected to the middle part of the second upper arc-shaped supporting beam.

[0011] Preferably, the first supporting structure further includes a first cross beam, one end of which is connected to the upper column and the other end of which is abutted against the inner wall of the tunnel segment; the second supporting structure further includes a second cross beam, one end of which is connected to the upper column and the other end of which is abutted against the inner wall of the tunnel segment.

[0012] Preferably, the lightweight tunnel segment support structure also includes a V-shaped support beam, the tip of the V-shaped support beam is connected to an end of the second upper arc-shaped support beam close to the opening, and the two upper columns on the same side of the opening as the two arch-type assemblies adjacent to the side door assembly are respectively connected to the two free ends of the V-shaped support beam.

[0013] Preferably, the first telescopic device and the second telescopic device are both hydraulic jacks.

[0014] Preferably, the lightweight tunnel segment support structure further comprises a rubber cushion layer, and the rubber cushion layer is arranged between the inner wall of the tunnel segment and the first upper arc-shaped support beam and the second upper arc-shaped support beam.

[0015] Preferably, the first upper arc-shaped support beam comprises a plurality of first upper arc-shaped segments connected in sequence; the first lower arc-shaped support beam comprises a plurality of first lower arc-shaped segments connected in sequence; the second upper arc-shaped support beam comprises a plurality of second upper arc-shaped segments connected in sequence; and the second lower arc-shaped support beam comprises a plurality of second lower arc-shaped segments connected in sequence.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The light tunnel segment support structure provided by the present invention comprises: a plurality of gate arch type components arranged along the length direction of the tunnel segment, the gate arch type components comprising a first upper arc-shaped support beam, a first lower arc-shaped support beam and two first support structures, the first upper arc-shaped support beam and the first lower arc-shaped support beam are symmetrically arranged up and down, the first upper arc-shaped support beam and the first lower arc-shaped support beam are both in contact with the inner wall of the tunnel segment, the opposite ends of the first upper arc-shaped support beam and the first lower arc-shaped support beam are respectively connected by a first support structure, each first support structure is against the inner wall of the tunnel segment, and each first support structure is connected to the middle part of the first upper arc-shaped support beam; a side door component, the side door component is arranged at Between two adjacent arch-type components, the side door component is arranged at the opening of the tunnel segment, the side door component includes a second upper arc-shaped support beam, a second lower arc-shaped support beam and a second support structure, the second upper arc-shaped support beam and the second lower arc-shaped support beam are arranged symmetrically up and down, the second upper arc-shaped support beam and the second lower arc-shaped support beam are both in contact with the inner wall of the tunnel segment, the second upper arc-shaped support beam and the second lower arc-shaped support beam are connected at one end away from the opening through the second support structure, the second support structure is against the inner wall of the tunnel segment, and the two first support structures on the same side of the opening in the two arch-type components adjacent to the side door component are both connected to the end of the second upper arc-shaped support beam close to the opening. Compared with the tic-tac-toe space steel frame, the lightweight tunnel segment support structure is designed and optimized based on the stress characteristics of the tunnel segment, and is lighter and easier to assemble while ensuring rigidity and bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A simplified structural diagram of a lightweight tunnel segment support structure provided in an embodiment of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the door arch assembly provided in an embodiment of the present invention;

[0021] Figure 3 It is a schematic structural diagram of a side door assembly provided in an embodiment of the present invention;

[0022] Figure 4 This is the floor plan of the subway tunnel connection channel.

[0023] Explanation of the reference numerals: 100, light tunnel segment support structure; 1, first upper arc-shaped support beam; 2, first lower arc-shaped support beam; 3, first support structure; 301, first upper column; 302, first telescopic device; 303, first lower column; 304, first diagonal bracing beam; 305, first cross beam; 4, second upper arc-shaped support beam; 5, second lower arc-shaped support beam; 6, second support structure; 601, second upper column; 602, second telescopic device; 603, second lower column; 604, second diagonal bracing beam; 605, second cross beam; 7, longitudinal connecting beam; 8, V-shaped support beam; 9, rubber cushion; 10, first pad; 11, second pad; 12, third pad; 13, fourth pad; 14, fifth pad; 15, tunnel segment; 16, connecting passage; 17, opening. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The purpose of the present invention is to provide a light tunnel segment support structure which is easy and convenient to assemble.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] refer to Figure 1-Figure 4As shown, the light tunnel segment support structure 100 provided in this embodiment includes: a plurality of arch-type components arranged along the length direction of the tunnel segment 15, the arch-type components including a first upper arc-shaped support beam 1, a first lower arc-shaped support beam 2 and two first support structures 3, the first upper arc-shaped support beam 1 and the first lower arc-shaped support beam 2 are symmetrically arranged up and down, the first upper arc-shaped support beam 1 and the first lower arc-shaped support beam 2 are both in contact with the inner wall of the tunnel segment 15, the opposite ends of the first upper arc-shaped support beam 1 and the first lower arc-shaped support beam 2 are respectively connected by a first support structure 3, each first support structure 3 is against the inner wall of the tunnel segment 15, and each first support structure 3 is connected to the middle part of the first upper arc-shaped support beam 1; a side door component, the side door component is arranged The side door assembly is located between two adjacent arch-type components, and the side door assembly is arranged at the opening 17 of the tunnel segment 15. The side door assembly includes a second upper arc-shaped support beam 4, a second lower arc-shaped support beam 5 and a second support structure 6. The second upper arc-shaped support beam 4 and the second lower arc-shaped support beam 5 are arranged symmetrically from top to bottom. The second upper arc-shaped support beam 4 and the second lower arc-shaped support beam 5 are both in contact with the inner wall of the tunnel segment 15. The second upper arc-shaped support beam 4 and the second lower arc-shaped support beam 5 are connected at one end away from the opening 17 by the second support structure 6. The second support structure 6 is against the inner wall of the tunnel segment 15. The two first support structures 3 on the same side of the opening 17 in the two arch-type components adjacent to the side door assembly are both connected to the end of the second upper arc-shaped support beam 4 close to the opening 17. Compared with the tic-tac-toe space steel frame, the light tunnel segment support structure 100 is designed and optimized based on the stress characteristics of the tunnel segment 15. While ensuring the rigidity and bearing capacity, it is more lightweight and easy to assemble.

[0028] Specifically in this embodiment, the number of door arch assemblies is 6, and the side door assembly is arranged between the 3rd and 4th frames.

[0029] In this embodiment, if Figure 1 As shown, the lightweight tunnel segment support structure 100 also includes a longitudinal beam assembly, which includes a plurality of longitudinal connecting beams 7. Any two adjacent first upper arc-shaped support beams 1, any two adjacent first lower arc-shaped support beams 2, any two adjacent first support structures 3, between the second support structure 6 and the first support structure 3 adjacent thereto, between the second upper arc-shaped support beam 4 and the first upper arc-shaped support beam 1 adjacent thereto, and between the second lower arc-shaped support beam 5 and the first lower arc-shaped support beam 2 adjacent thereto are all connected by the longitudinal connecting beams 7.

[0030] In this embodiment, specifically, Figure 2 As shown, the first support structure 3 includes a first upper column 301, a first telescopic device 302 and a first lower column 303 connected in sequence, the first upper column 301 is connected to one end of the first upper arc-shaped support beam 1, and the second lower column 603 is connected to one end of the first lower arc-shaped support beam 2; Figure 3 As shown, the second support structure 6 includes a second upper column 601, a second telescopic device 602 and a second lower column 603 connected in sequence, the second upper column 601 is connected to one end of the second upper arc-shaped support beam 4, and the second lower column 603 is connected to one end of the second lower arc-shaped support beam 5. Correspondingly, longitudinal connecting beams 7 are arranged between two adjacent first upper columns 301, two adjacent first lower columns 303, the second upper column 601 and the adjacent first upper column 301, and the second lower column 603 and the adjacent first lower column 303.

[0031] In this embodiment, if Figure 2 As shown, the first support structure 3 also includes a first diagonal bracing beam 304, one end of the first diagonal bracing beam 304 is connected to the first upper column 301, and the other end is connected to the middle part of the first upper arc-shaped support beam 1; Figure 3 As shown, the second support structure 6 further includes a second diagonal bracing beam 604, one end of the second diagonal bracing beam 604 is connected to the second upper column 601, and the other end is connected to the middle of the second upper arc-shaped support beam 4. With such an arrangement, the light tunnel segment support structure 100 is more stable.

[0032] Furthermore, if Figure 2 As shown, the first upper column 301 and the first arc-shaped upper support beam are respectively provided with a first cushion block 10 and a second cushion block 11, and both ends of the first diagonal support beam 304 are respectively connected to the first cushion block 10 and the second cushion block 11; Figure 3 As shown, the second upper column 601 and the second arc-shaped upper support beam are respectively provided with a third cushion block 12 and a fourth cushion block 13 , and both ends of the second diagonal support beam 604 are respectively connected to the third cushion block 12 and the fourth cushion block 13 .

[0033] In this embodiment, specifically, Figure 2 As shown, the first support structure 3 further includes a first crossbeam 305, one end of which is connected to the upper column, and the other end of which is against the inner wall of the tunnel segment 15; Figure 3 As shown, the second support structure 6 further includes a second cross beam 605 , one end of which is connected to the upper column and the other end of which is abutted against the inner wall of the tunnel segment 15 .

[0034] In this embodiment, specifically, Figure 1 and Figure 3 As shown, the lightweight tunnel segment support structure 100 also includes a V-shaped support beam 8, the tip of the V-shaped support beam 8 is connected to an end of the second upper arc-shaped support beam 4 close to the opening 17, and the two upper columns on the same side of the opening 17 in the two door arch assemblies adjacent to the side door assembly are respectively connected to the two free ends of the V-shaped support beam 8.

[0035] In this embodiment, Figure 3As shown, a fifth pad 14 is provided at one end of the second upper arc-shaped support beam 4 near the opening 17, and the fifth pad 14 is connected to the tip of the V-shaped support beam 8. Further, the first pad 10, the second pad 11, the third pad 12, the fourth pad 13 and the fifth pad 14 are all wedge-shaped pads. It should be noted that the V-shaped support beam 8 is composed of two connecting beams, one end of the two connecting beams is connected, and the connection position forms the tip of the V-shaped support beam 8, and the other ends of the two connecting beams are the two free ends of the V-shaped support beam 8.

[0036] In this embodiment, the first telescopic device 302 and the second telescopic device 602 are both hydraulic jacks. It should be noted that the first telescopic device 302 and the second telescopic device 602 are not limited to hydraulic jacks, which are only used as examples.

[0037] In this embodiment, if Figure 2 and Figure 3 As shown, the lightweight tunnel segment support structure 100 further includes a rubber cushion layer 9 , and the rubber cushion layer 9 is disposed between the inner wall of the tunnel segment 15 and the first upper arc-shaped support beam 1 and the second upper arc-shaped support beam 4 .

[0038] In this embodiment, the first upper arc-shaped support beam 1 includes a plurality of first upper arc-shaped segments connected in sequence; the first lower arc-shaped support beam 2 includes a plurality of first lower arc-shaped segments connected in sequence; the second upper arc-shaped support beam 4 includes a plurality of second upper arc-shaped segments connected in sequence; and the second lower arc-shaped support beam 5 includes a plurality of second lower arc-shaped segments connected in sequence. With such an arrangement, the light tunnel segment support structure 100 is more convenient to assemble.

[0039] Specifically in this embodiment, the first upper arc-shaped support beam 1, the first lower arc-shaped support beam 2, the second upper arc-shaped support beam 4, the second lower arc-shaped support beam 5, the first upper column 301, the first lower column 303, the second upper column 601, the second lower column 603, the upper column, the lower column, the longitudinal connecting beam 7, the first diagonal bracing beam 304, the second diagonal bracing beam 604, the first cross beam 305, the second cross beam 605 and the V-shaped support beam 8 are all made of H-shaped steel.

[0040] In this embodiment, all components of the arch assembly and the side door assembly are manufactured in the factory and assembled after being transported to the construction site. The assembly order of the entire support structure is the arch assembly, the side door assembly, the rubber cushion layer 9, and the longitudinal beam assembly. After the assembly is completed, the first hydraulic jack and the second hydraulic jack are used to apply the supporting force according to the calculation results. After the support is completed, the tunnel segment 15 hole construction and the communication channel 16 construction are carried out.

[0041] The connections in this embodiment all refer to detachable connections, specifically bolt connections. It should be noted that the "connection" in this embodiment is not limited to detachable connections, and "connection" should be understood in a broad sense, for example, it can also be a fixed connection, or an integral connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium.

[0042] In the description of the present invention, it should be noted that certain words indicating orientation or positional relationships are only for the purpose of facilitating the description of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A lightweight tunnel segment support structure, characterized in that: include: A plurality of portal arch assemblies arranged along the length direction of the tunnel segment, the portal arch assemblies comprising a first upper arc-shaped support beam, a first lower arc-shaped support beam and two first support structures, the first upper arc-shaped support beam and the first lower arc-shaped support beam are symmetrically arranged up and down, the first upper arc-shaped support beam and the first lower arc-shaped support beam are both in contact with the inner wall of the tunnel segment, the first upper arc-shaped support beam and the first lower arc-shaped support beam have opposite ends connected by one of the first support structures, each of the first support structures abuts against the inner wall of the tunnel segment, and each of the first support structures is connected to the middle portion of the first upper arc-shaped support beam; A side door assembly, wherein the side door assembly is arranged between two adjacent door arch assemblies, and the side door assembly is arranged at the opening position of the tunnel segment, the side door assembly comprises a second upper arc-shaped support beam, a second lower arc-shaped support beam and a second supporting structure, the second upper arc-shaped support beam and the second lower arc-shaped support beam are symmetrically arranged up and down, the second upper arc-shaped support beam and the second lower arc-shaped support beam are both in contact with the inner wall of the tunnel segment, the second upper arc-shaped support beam and the second lower arc-shaped support beam are connected at one end away from the opening by the second supporting structure, the second supporting structure is against the inner wall of the tunnel segment, and the two first supporting structures on the same side of the opening in the two door arch assemblies adjacent to the side door assembly are both connected to the end of the second upper arc-shaped support beam close to the opening.

2. The lightweight tunnel segment support structure according to claim 1, characterized in that: It also includes a longitudinal beam assembly, which includes a plurality of longitudinal connecting beams, and any two adjacent first upper arc-shaped support beams, any two adjacent first lower arc-shaped support beams, any two adjacent first support structures, between the second support structure and the first support structure adjacent thereto, between the second upper arc-shaped support beam and the first upper arc-shaped support beam adjacent thereto, and between the second lower arc-shaped support beam and the first lower arc-shaped support beam adjacent thereto are all connected by the longitudinal connecting beams.

3. The lightweight tunnel segment support structure according to claim 1, characterized in that: The first supporting structure includes a first upper column, a first telescopic device and a first lower column connected in sequence, the first upper column is connected to one end of the first upper arc-shaped support beam, and the first lower column is connected to one end of the first lower arc-shaped support beam; the second supporting structure includes a second upper column, a second telescopic device and a second lower column connected in sequence, the second upper column is connected to one end of the second upper arc-shaped support beam, and the second lower column is connected to one end of the second lower arc-shaped support beam.

4. The lightweight tunnel segment support structure according to claim 3, characterized in that: The first supporting structure also includes a first diagonal bracing beam, one end of which is connected to the first upper column and the other end is connected to the middle part of the first upper arc-shaped supporting beam; the second supporting structure also includes a second diagonal bracing beam, one end of which is connected to the second upper column and the other end is connected to the middle part of the second upper arc-shaped supporting beam.

5. The lightweight tunnel segment support structure according to claim 3, characterized in that: The first supporting structure also includes a first cross beam, one end of which is connected to the first upper column and the other end of which is abutted against the inner wall of the tunnel segment; the second supporting structure also includes a second cross beam, one end of which is connected to the second upper column and the other end of which is abutted against the inner wall of the tunnel segment.

6. The lightweight tunnel segment support structure according to claim 3, characterized in that: It also includes a V-shaped support beam, the tip of which is connected to one end of the second upper arc-shaped support beam close to the opening, and the two first upper columns on the same side of the opening in the two door arch assemblies adjacent to the side door assembly are respectively connected to the two free ends of the V-shaped support beam.

7. The lightweight tunnel segment support structure according to claim 3, characterized in that: The first telescopic device and the second telescopic device are both hydraulic jacks.

8. The lightweight tunnel segment support structure according to claim 1, characterized in that: It also includes a rubber cushion layer, which is arranged between the inner wall of the tunnel segment and the first upper arc-shaped support beam and the second upper arc-shaped support beam.

9. The lightweight tunnel segment support structure according to claim 1, characterized in that: The first upper arc-shaped support beam includes a plurality of first upper arc-shaped segments connected in sequence; the first lower arc-shaped support beam includes a plurality of first lower arc-shaped segments connected in sequence; the second upper arc-shaped support beam includes a plurality of second upper arc-shaped segments connected in sequence; the second lower arc-shaped support beam includes a plurality of second lower arc-shaped segments connected in sequence.

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