Segmental lining reinforcing structure in subway tunnel

Abstract

The utility model discloses a segmental lining reinforcing structure in a subway tunnel, which relates to the field of segmental lining in the subway tunnel, and comprises a plurality of arc-shaped reinforcing sheets, each arc-shaped reinforcing sheet is provided with a through hole structure along the two ends of the arc direction, and ribs are arranged in the through hole structure. The through hole structure is divided into a plurality of grouting cavities through the ribs, the number of the ribs is one, the through hole structure is divided into two grouting cavities, the inner walls of the two grouting cavities face inner side through openings of the arc-shaped reinforcing pieces to form grouting openings, and the two grouting openings penetrate through the two ends of the arc direction of the arc-shaped reinforcing pieces. Each arc-shaped reinforcing piece is detachably connected with a plurality of blocking pieces used for blocking the two grouting openings, and any one grouting opening is provided with at least two blocking pieces in a blocking mode. The segmental lining reinforcing structure has the effect of improving the technical problem that in the prior art, a segmental lining reinforcing structure formed by a plurality of arc-shaped reinforcing sheets may not form an effective supporting effect.

Description

Technical Field

[0001] The present application relates to the technical field of tube segment lining in subway tunnels, and in particular to a tube segment lining reinforcement structure in subway tunnels. Background Art

[0002] Segment lining is the main supporting structure of subway tunnels, usually made of prefabricated reinforced concrete segments connected by bolts. In order to ensure the safety of subway tunnel structures, tunnel segment steel ring reinforcement construction technology can be adopted before subway tunnels are put into operation to eliminate safety hazards of tunnel structures. Usually, subway tunnel lining reinforcement structures generally use Q235 / Q345B steel plates, which are reinforced in the form of a full ring to form a fitting support for the inner wall of the segment.

[0003] A Chinese patent with application number CN202321812668.7 discloses a segment lining reinforcement structure, including an arc-shaped reinforcement plate, a hollow cavity is arranged inside the arc-shaped reinforcement plate, the two circumferential ends of the arc-shaped reinforcement plate are open, a plurality of ribs are arranged inside the hollow cavity, the ribs isolate the interior of the hollow cavity into a plurality of grouting cavities, and a grouting port corresponding to each grouting cavity is also arranged on the inner arc surface of the arc-shaped reinforcement plate.

[0004] The above technology reinforces the segment lining through a ring structure formed by splicing multiple arc-shaped reinforcement pieces and a grouting structure; however, according to its instructions, adjacent arc-shaped reinforcement pieces abut against each other, and the reinforcement support effect formed by its ring-shaped reinforcement structure depends on the ring structure formed by grouting. When the grouting effect in each arc-shaped reinforcement piece is inconsistent and an effective ring-shaped grouting structure is not formed, the reinforcement effect is poor. Utility Model Content

[0005] In order to improve the technical problem in the prior art that the segment lining reinforcement structure formed by multiple arc-shaped reinforcement plates may not form an effective supporting effect, the present application provides a segment lining reinforcement structure in a subway tunnel.

[0006] The present application provides a subway tunnel inner segment lining reinforcement structure, which adopts the following technical solution:

[0007] A tube segment lining reinforcement structure in a subway tunnel comprises a plurality of arcuate reinforcement sheets, each of the arcuate reinforcement sheets having openings passing through at both ends along an arc direction to form a through hole structure, wherein a rib is arranged in the through hole structure, the rib divides the through hole structure into a plurality of grouting cavities, the rib is one, and the through hole structure divides into two grouting cavities, the inner walls of the two grouting cavities both pass through openings toward the inner side of the arcuate reinforcement sheet to form grouting openings, and the two grouting openings both pass through the arcuate ends of the arcuate reinforcement sheet, each of the arcuate reinforcement sheets is detachably connected to a plurality of blocking sheets for blocking the two grouting openings, and any grouting opening is blocked by at least two of the blocking sheets.

[0008] Optionally, the inner walls of the two grouting cavities are opened through the axial side walls of the adjacent arc-shaped reinforcement plates to form a socket, the socket is connected to the grouting port, and each of the sealing plates is simultaneously adapted to and sealed on the socket and the grouting port.

[0009] Optionally, the inner wall of each grouting cavity is provided with a first slot opening toward the socket, and the wall of the socket is also provided with a second slot, and the second slot passes through the axial side wall of the arc-shaped reinforcement plate; one end of the blocking plate is fixed with a first plug plate adapted to and inserted into the first slot, and the other end is fixed with a second plug plate inserted into the second slot.

[0010] Optionally, an embedding groove is provided at the corners of the first slot and the second slot, and an anti-seepage layer is adapted in both embedding grooves.

[0011] Optionally, the anti-seepage layer includes a sealing layer and a water-stopping layer that abut each other, and the water-stopping layer has water absorption and expansion properties.

[0012] Optionally, the sealing layer is closer to the grouting cavity than the water-stop layer.

[0013] Optionally, each of the arc-shaped reinforcement sheets is provided with a plurality of slots, and each of the slots opens toward the axial side wall of the arc-shaped reinforcement sheet, and blocks adapted to and sliding in the slots are fixed at both ends of the blocking sheet.

[0014] Optionally, the slot is a dovetail slot or a stepped slot.

[0015] Optionally, the arc-shaped reinforcement sheet is threadedly connected to a plurality of anchor bolts, and each of the blocking sheets is connected to the arc-shaped reinforcement sheet via at least two of the anchor bolts.

[0016] Optionally, a slide groove is provided at one end of the arc-shaped reinforcement sheet along the arc direction, the slide groove passes through both axial ends of the arc-shaped reinforcement sheet, and a slider adapted to and sliding in the slide groove is fixed at the other end of the arc-shaped reinforcement sheet along the arc direction.

[0017] In summary, this application includes the following beneficial technical effects:

[0018] A grouting cavity is opened on an arc-shaped reinforcement sheet, and an opening is formed on the inner wall of the grouting cavity toward the inner side of the arc-shaped reinforcement sheet to form a grouting port. A plurality of detachably connected sealing sheets are used to seal the grouting port so that grouting and vibration operations can be carried out from the grouting port. As the grouting operation is gradually carried out, a plurality of sealing sheets are installed from bottom to top in sequence, thereby improving the technical problem in the prior art that the segment lining reinforcement structure formed by a plurality of arc-shaped reinforcement sheets may not form an effective supporting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an axonometric diagram of a tube segment lining reinforcement structure in a subway tunnel according to the utility model.

[0020] Figure 2 yes Figure 1 Enlarged view of part A in the middle.

[0021] Figure 3 It is a partial exploded view of the tube segment lining reinforcement structure in a subway tunnel of the utility model.

[0022] Explanation of the reference numerals: 1. Arc-shaped reinforcement plate; 11. Slide groove; 12. Sliding block; 2. Rib; 3. Grouting chamber; 31. First slot; 32. Second slot; 33. Embedded slot; 4. Sealing plate; 41. First plug plate; 42. Second plug plate; 43. Block; 5. Anti-seepage layer; 51. Sealing layer; 52. Water-stop layer; 6. Slot; 7. Anchor bolt. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-3 This application is described in further detail.

[0024] The embodiment of the present application discloses a segment lining reinforcement structure in a subway tunnel.

[0025] Reference Figure 1 and Figure 2 The segment lining reinforcement structure in the subway tunnel includes a plurality of arc-shaped reinforcement pieces 1, each arc-shaped reinforcement piece 1 having openings at both ends along the arc direction to form a through-hole structure, and a rib 2 is arranged in the through-hole structure, and the rib 2 divides the through-hole structure into a plurality of grouting cavities 3. There is one rib 2, and the through-hole structure divides the through-hole structure into two grouting cavities 3. The inner walls of the two grouting cavities 3 are both opened toward the inner side of the arc-shaped reinforcement piece 1 to form a grouting port, and the two grouting ports are both through the arc-shaped reinforcement piece 1 at both ends, and each arc-shaped reinforcement piece 1 is detachably connected to a plurality of sealing pieces 4 for blocking the two grouting ports, and any grouting port is blocked with at least two sealing pieces 4.

[0026] In the process of splicing multiple arc-shaped reinforcement sheets 1 to form an annular structure supported on the segment lining, or after the annular structure is formed, multiple sealing sheets 4 are installed on the arc-shaped reinforcement sheets 1 in sequence. In this process, the lowest sealing sheet 4 can be installed first to form a grouting cavity 3, and pouring is carried out in the grouting cavity 3. When it is full or almost full, the upper sealing sheet 4 is installed, and so on, until the annular grouting body formed by multiple grouting cavities 3 is completed. This continuous grouting method is used to improve the technical problem in the prior art that the segment lining reinforcement structure formed by multiple arc-shaped reinforcement sheets may not form an effective supporting effect.

[0027] Specifically, when multiple arc-shaped reinforcement sheets 1 are spliced ​​to form an annular structure supported on the segment lining, multiple grouting cavities 3 are interconnected, and the end of the lowest arc-shaped reinforcement sheet 1 is closed and abuts against the ballast bed, and the outer side of the arc-shaped reinforcement sheet 1 abuts against the segment lining.

[0028] During the supporting process, the arc-shaped reinforcement sheet 1 is fitted to the inner wall of the segment lining and epoxy resin or concrete is directly grouted between the two; and by grouting between the arc-shaped reinforcement sheet 1 and the inner wall of the segment lining, there is no gap between the reinforcement profile and the tunnel lining, and there will be no displacement.

[0029] Of course, when in use, one of the grouting cavities 3 can be selected for grouting according to the required supporting force to form a primary support. Then, when the reinforcement ring formed by the arc-shaped reinforcement sheet 1 is under too much pressure or produces secondary deformation, the other grouting cavity 3 can be grouted to form a secondary support. In addition, the ungrouted grouting cavity 3 can be broken to observe and maintain the tunnel lining blocked by the reinforcement ring and the grouted arc-shaped reinforcement sheet 1 without removing the entire reinforcement ring.

[0030] The inner walls of the two grouting cavities 3 are both opened toward the axial side walls of the adjacent arc-shaped reinforcement pieces 1 to form a socket, the socket is connected to the grouting port, and each plugging piece 4 is simultaneously adapted to and plugged in the socket and the grouting port, so that each plugging piece 4 can be disassembled and assembled from the axial direction of the arc-shaped reinforcement piece 1, that is, the extension direction of the tunnel, and the disassembly and assembly is convenient.

[0031] On the basis of the above embodiment, a slide groove 11 is provided at one end of the arc-shaped reinforcement sheet 1 along the arc direction (shown as the lower end in the figure), the slide groove 11 passes through both axial ends of the arc-shaped reinforcement sheet 1, and a slider 12 adapted to and sliding in the slide groove 11 is fixed at the other end of the arc-shaped reinforcement sheet 1 along the arc direction.

[0032] Two adjacent arc-shaped reinforcement sheets 1 are connected by sliding the slider 12 into the slide groove 11 , so as to improve the supporting force of the annular support structure formed by the multiple arc-shaped reinforcement sheets 1 .

[0033] Reference Figures 1 to 3 The inner wall of each grouting cavity 3 is provided with a first slot 31 facing the socket opening, and the wall of the socket is also provided with a second slot 32, and the second slot 32 passes through the axial side wall of the arc-shaped reinforcement plate 1; one end of the blocking plate 4 is fixed with a first plug plate 41 adapted to and inserted into the first slot 31, and the other end is fixed with a second plug plate 42 inserted into the second slot 32.

[0034] After the plugging piece 4 is axially inserted into the arc-shaped reinforcing piece 1 , the first plugging plate 41 and the second plugging plate 42 simultaneously form a sealing effect on both ends of the plugging piece 4 relative to the grouting opening to reduce grouting overflow.

[0035] By adopting the above scheme, the sealing piece 4 is overall in an "L" shape, one end of which is directly inserted into the first slot 31 along the extension direction of the tunnel and seals the socket and the opening of the grouting cavity 3, and the other end is bent and sealed in the second slot 32, so that when the slurry in the grouting cavity 3 overflows, it can only seep out along the inner walls of the first slot 31 and the second slot 32, thereby improving the sealing performance.

[0036] An embedding groove 33 is provided at the corners of the first slot 31 and the second slot 32 , and an anti-seepage layer 5 is fitted in each of the two embedding grooves 33 , so as to improve the sealing effect through the anti-seepage layer 5 and further reduce the possibility of grout overflow.

[0037] As one of the parallel solutions, an embedding groove 33 can be opened at the corner of the first plugboard 41 and the second plugboard 42; as the second parallel solution, an embedding groove 33 can be opened at the corner of the first slot 31 and the second slot 32, and the first plugboard 41 and the second plugboard 42.

[0038] The anti-seepage layer 5 includes a sealing layer 51 and a water-stopping layer 52 which are in contact with each other, and the water-stopping layer 52 has the property of swelling upon absorbing water. The sealing layer 51 can be made of nitrile rubber, which has good water resistance, air tightness and excellent bonding performance; the water-stopping layer 52 can be made of polyurethane material, which has better stability, chemical resistance, resilience and mechanical properties than PVC foam material, has smaller compression deformation, and swells when exposed to water, thereby preventing water leakage.

[0039] The sealing layer 51 is closer to the grouting cavity 3 than the water-stopping layer 52, so that the sealing layer 51 blocks the outwardly seeping slurry before the water-stopping layer 52, thereby ensuring the service life of the water-stopping layer 52 and reducing the subsequent sealing pressure of the water-stopping layer 52.

[0040] Reference Figures 1 to 3 Each arc-shaped reinforcing sheet 1 is provided with a plurality of slots 6 , and each slot 6 opens toward the axial side wall of the arc-shaped reinforcing sheet 1 , and blocks 43 adapted to and sliding in the slots 6 are fixed at both ends of the blocking sheet 4 .

[0041] The slot 6 is a dovetail slot or a step slot. In the figure, the slot 6 near one end of the first plug plate 41 is shown as a dovetail slot, and the corresponding block 43 is shown as a dovetail block, and the slot 6 near one end of the second plug plate 42 is shown as a step slot, and the corresponding block 43 is shown as a step block.

[0042] The blocking piece 4 is inserted along the axial direction of the arc-shaped reinforcing piece 1, so that the clamping block 43 slides and is clamped into the clamping groove 6 to complete the rapid installation of the blocking piece 4. The clamping block 43 is clamped in the clamping groove 6 to prevent the blocking piece 4 from being separated from the arc-shaped reinforcing piece 1 along the inner side direction of the arc-shaped reinforcing piece 1.

[0043] The arc-shaped reinforcement sheet 1 is threadedly connected with a plurality of anchor bolts 7, and each blocking sheet 4 is connected to the arc-shaped reinforcement sheet 1 by at least two anchor bolts 7, so that the blocking sheet 4 and the arc-shaped reinforcement sheet 1 are fastened together by the anchor bolts 7 and prevented from being separated from each other.

[0044] Specifically, at least two anchor bolts 7 are evenly distributed at both ends of the arc-shaped reinforcement plate 1, and the anchor bolts 7 at both ends of the arc-shaped reinforcement plate 1 extend in a direction perpendicular to the plate surface, that is, the anchor bolts 7 at both ends of the arc-shaped reinforcement plate 1 are perpendicular to each other.

[0045] During the specific installation, threaded holes can be opened on the inner walls of the first slot 31 and the second slot 32, and corresponding through holes can be opened at the ends of the arc-shaped reinforcement sheet 1, so that after the arc-shaped reinforcement sheet 1 is inserted into place, the arc-shaped reinforcement sheet 1 can be further fixed by the anchor bolts 7.

[0046] On the basis of the above embodiment, at least the anchor bolts 7 extending along the extension direction of the tunnel are countersunk bolts to ensure that along the extension direction of the tunnel, two adjacent arc-shaped reinforcement plates 1 abut against each other to form a tight support for the segment lining.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A tube segment lining reinforcement structure in a subway tunnel, comprising a plurality of arc-shaped reinforcement sheets (1), each of the arc-shaped reinforcement sheets (1) having openings extending through both ends along an arc to form a through-hole structure, wherein a rib (2) is arranged in the through-hole structure, and the rib (2) divides the through-hole structure into a plurality of grouting cavities (3), characterized in that: The rib (2) is one, and the through-hole structure is used to separate and form two grouting cavities (3). The inner walls of the two grouting cavities (3) are both opened toward the inner side of the arc-shaped reinforcement sheet (1) to form grouting openings, and the two grouting openings are both through the arc-shaped reinforcement sheet (1) at both ends. Each arc-shaped reinforcement sheet (1) is detachably connected to a plurality of sealing sheets (4) for sealing the two grouting openings, and any grouting opening is sealed with at least two of the sealing sheets (4).

2. The subway tunnel inner segment lining reinforcement structure according to claim 1 is characterized in that: The inner walls of the two grouting cavities (3) are both opened through the axial side walls of the adjacent arc-shaped reinforcement sheets (1) to form a socket, the socket is connected to the grouting port, and each of the blocking sheets (4) is simultaneously adapted to and blocked at the socket and the grouting port.

3. The subway tunnel inner segment lining reinforcement structure according to claim 2 is characterized in that: The inner wall of each grouting cavity (3) is provided with a first slot (31) opening toward the socket, and the wall of the socket is also provided with a second slot (32), the second slot (32) passing through the axial side wall of the arc-shaped reinforcement sheet (1); a first plug plate (41) adapted to and inserted into the first slot (31) is fixed at one end of the blocking sheet (4), and a second plug plate (42) inserted into the second slot (32) is fixed at the other end.

4. The subway tunnel inner segment lining reinforcement structure according to claim 3 is characterized in that: An embedding groove (33) is provided at the corners of the first slot (31) and the second slot (32), and an anti-seepage layer (5) is fitted in each of the two embedding grooves (33).

5. The subway tunnel inner segment lining reinforcement structure according to claim 4 is characterized in that: The anti-seepage layer (5) comprises a sealing layer (51) and a water-stopping layer (52) which are in contact with each other, and the water-stopping layer (52) has the property of absorbing water and swelling.

6. The subway tunnel inner segment lining reinforcement structure according to claim 5 is characterized in that: The sealing layer (51) is closer to the grouting cavity (3) than the water-stopping layer (52).

7. The subway tunnel inner segment lining reinforcement structure according to any one of claims 2 to 6, characterized in that: Each of the arc-shaped reinforcing sheets (1) is provided with a plurality of slots (6), and each of the slots (6) opens toward the axial side wall of the arc-shaped reinforcing sheet (1), and blocks (43) adapted to and sliding in the slots (6) are fixed at both ends of the blocking sheet (4).

8. The subway tunnel inner segment lining reinforcement structure according to claim 7 is characterized in that: The clamping groove (6) is a dovetail groove or a stepped groove.

9. The subway tunnel inner segment lining reinforcement structure according to any one of claims 1 to 6, characterized in that: The arc-shaped reinforcement sheet (1) is threadedly connected to a plurality of anchor bolts (7), and each of the blocking sheets (4) is connected to the arc-shaped reinforcement sheet (1) via at least two of the anchor bolts (7).

10. The subway tunnel inner segment lining reinforcement structure according to any one of claims 1 to 6, characterized in that: A slide groove (11) is provided at one end of the arc-shaped reinforcement sheet (1) along the arc direction, the slide groove (11) passes through two axial ends of the arc-shaped reinforcement sheet (1), and a slider (12) adapted to and sliding in the slide groove (11) is fixed at the other end of the arc-shaped reinforcement sheet (1) along the arc direction.

Images