A connecting member for use in a tunnel lining reinforcement structure

Abstract

The present application belongs to the field of tunnel and underground engineering, and discloses a connecting member for reinforcing structure of tunnel lining, to solve the problems existing in the prior art in reinforcing tunnel lining, which comprises first connecting devices arranged between adjacent prefabricated members, and second connecting devices or third connecting devices or both the second and third connecting devices for connecting the end of the prefabricated member with the inner side of the tunnel lining. The present application is detachable, facilitating the detection, maintenance and replacement of the reinforcing structure. The present application is easy to manufacture, and is connected with the tunnel lining through bolts, thus being simple to install on site and reliable in connection with the tunnel lining, and thus solving the connection problems between the adjacent prefabricated members and between the prefabricated member and the tunnel lining.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tunnels and underground engineering, and particularly relates to a connecting component used in a tunnel lining reinforcement structure. BACKGROUND

[0002] The tunnel lining structure is usually reinforced by a sleeve arch reinforcement method. The sleeve arch reinforcement method is further divided into a molded reinforced concrete sleeve arch and a steel frame sprayed concrete sleeve arch. The molded reinforced concrete sleeve arch can greatly improve the bearing capacity of the lining, but the sleeve arch has a long construction time, high cost, is easy to invade the tunnel building limit, and needs to interrupt traffic. The steel frame sprayed concrete sleeve arch is also fast in construction and can greatly improve the bearing capacity of the lining, but also has the problems of high cost, poor durability, easy invasion of the tunnel building limit, and the need to interrupt traffic.

[0003] If prefabricated components are used for reinforcement, the above problems can be solved, but how to connect the prefabricated components is also a problem to be solved. SUMMARY

[0004] The present application aims to solve the problems in the prior art in tunnel lining reinforcement, and provides a connecting component used in a tunnel lining reinforcement structure.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] A connecting component used in a tunnel lining reinforcement structure, comprising a first connecting device arranged between adjacent prefabricated components, and further comprising a second connecting device or a third connecting device or both the second connecting device and the third connecting device for connecting the end of the prefabricated component with the inner side of the tunnel lining; the first connecting device comprises a U-shaped component, the U-shaped component and the prefabricated component are connected through a third connecting piece embedded in the prefabricated component, and the U-shaped component and the inner side of the tunnel lining are connected through a second connecting piece.

[0007] Further, the second connecting device and the inner side of the tunnel lining near the wall foot are connected through a second connecting piece, the second connecting device and the prefabricated component are connected through a third connecting piece, and the second connecting device and the inner wall of the existing cable groove are connected through a fourth connecting piece.

[0008] Further, the third connecting device and the prefabricated component ring end head at the beginning and end positions in the tunnel ring range of the tunnel lining local reinforcement are connected through a third connecting piece, and the third connecting device and the inner side of the tunnel lining are connected through a second connecting piece.

[0009] Further, the middle part of the U-shaped component is provided with a mounting hole for mounting the second connecting piece, and the two sides of the U-shaped component are provided with mounting holes for mounting the third connecting piece.

[0010] Further, a plurality of first stiffening ribs are arranged in the groove of the H-shaped member.

[0011] Further, the second connecting device comprises a H-shaped member, a mounting hole for mounting the second connecting member is arranged in the middle of the H-shaped member, a mounting hole for mounting the third connecting member is arranged in one side of the H-shaped member, and a mounting hole for mounting the fourth connecting member is arranged in the other side of the H-shaped member.

[0012] Further, a plurality of second stiffening ribs are arranged in the groove of the H-shaped member.

[0013] Further, the third connecting device comprises a Z-shaped member, a mounting hole for mounting the second connecting member is arranged in one side plate of the Z-shaped member, a mounting hole for mounting the third connecting member is arranged in the middle plate of the Z-shaped member, and a plurality of third stiffening ribs are arranged in the right angle side of the Z-shaped member.

[0014] Further, the third connecting member is a threaded sleeve embedded in the circumferential end of the prefabricated member, an enlarged head is arranged at one end of the threaded sleeve, and the threaded sleeve is used for mounting the third connecting rod.

[0015] Further, the third connecting member is a foundation bolt embedded in the circumferential end of the prefabricated member, the first connecting member, the second connecting member and the fourth connecting member can be anchor bolts or anchoring bars.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] The present application can be repaired and replaced, since the first connecting member, the second connecting member, the third connecting member and the fourth connecting member are detachably arranged, the first connecting device adopts a H-shaped member, the second connecting device adopts a H-shaped member, and the third connecting device adopts a Z-shaped member, so that the present application can be detachably connected with the lining and the prefabricated member. When the prefabricated member cracks or separates from the tunnel lining, the relevant connecting device and the nut, the gasket and the tray of the connecting member can be removed, the prefabricated member can be replaced, and the relevant connecting device and the nut, the gasket and the tray of the connecting member can be installed again.

[0018] The present application is easy to manufacture, can be simply installed on site through bolt connection, and can be reliably connected with the tunnel lining, thereby solving the connection problems between adjacent prefabricated members and between the prefabricated member and the tunnel lining. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present application.

[0020] Figure 2 It is Figure 1 It is a local enlarged schematic diagram of A in the middle.

[0021] Figure 3 It isFigure 1 Detail view of the middle B.

[0022] Figure 4 Structure three view of the first connecting device of the present application.

[0023] Figure 5 Structure three view of the second connecting device of the present application.

[0024] Figure 6 Sectional view of the third connecting device of the present application after installation by using pre-buried threaded sleeve stud connection mode.

[0025] Figures 7-8 Schematic view of the third connecting device of the present application after installation by using pre-buried (foot bolt) bolt connection mode.

[0026] Figure 9 Schematic view of the arrangement of the reinforcing net, reserved hole and pre-buried part of the present application.

[0027] Figure 10 Schematic view of the present application.

[0028] Figure 11 Schematic view of the present application applied to railway tunnel lining reinforcement.

[0029] Figure 12 Schematic view of the present application applied to shield tunnel lining reinforcement.

[0030] Figures 13-15 Schematic view of the present application applied to shield tunnel lining reinforcement.

[0031] Figure 16 Schematic view of the present application applied to shield tunnel lining reinforcement. Figure 13 Detail view of the middle C.

[0032] Figure 17 Structure three view of the third connecting device of the present application.

[0033] Figure 18 Schematic view of the present application applied to shield tunnel lining reinforcement.

[0034] Figure 19 Schematic view of the present application applied to shield tunnel lining reinforcement.

[0035] The meanings of the reference numerals in the attached drawings are as follows: 1. Precast component; 2. First connector; 21. First connecting rod; 22. First nut; 23. First tray; 3. Reinforcing mesh; 4. First connecting device; 41. Z-shaped component; 42. First stiffening rib; 5. Second connector; 51. Second connecting rod; 52. Second nut; 53. Second tray; 6. Adhesive layer; 7. Grout filling layer; 8. Third connector; 81. Third connecting rod; 82. Third nut; 83. Washer; 84. Threaded sleeve; 85. Enlarged head; 9. Fourth connector; 91. Fourth connecting rod; 92. Fourth nut; 10. Second connecting device; 101. Z-shaped component; 102. Second stiffening rib; 11. Third connecting device; 111. Z-shaped component; 112. Third stiffening rib. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] Example 1: Full-section reinforcement of tunnel lining.

[0038] like Figures 1-10 As shown, a connecting member for a tunnel lining reinforcement structure includes a first connecting device 4 disposed between adjacent precast components 1, and a second connecting device 10 for connecting the end of the precast component 1 to the inner side of the tunnel lining.

[0039] like Figure 3 , 4 As shown, the first connecting device 4 includes a U-shaped component 41, which is connected to the precast component 1 via a third connector 8 embedded in the precast component 1. The U-shaped component 41 is also connected to the inner side of the tunnel lining via a second connector 5. The U-shaped component 41 has a mounting hole in its center for installing the second connector 5, and mounting holes on both sides for installing the third connector 8. Multiple first stiffening ribs 42 are spaced apart within the groove of the U-shaped component 41.

[0040] like Figure 2 As shown, the end of the precast component 1 near the base of the tunnel lining wall is fixed by a second connecting device 10. An adhesive layer 6 is provided between the second connecting device 10 and the tunnel lining, and the second connecting device 10 is connected to the inner side of the tunnel lining by a second connecting member 5. The second connecting device 10 is connected to the precast component 1 by a third connecting member 8, and the second connecting device 10 is connected to the inner wall of the existing cable trough by a fourth connecting member 9. The fourth connecting member 9 can be an anchor bolt or a rebar, and includes a fourth connecting rod 91 and a fourth nut 92 installed on the fourth connecting rod 91.

[0041] like Figure 5As shown, the second connecting device 10 includes a U-shaped component 101 and a second stiffening rib 102. The U-shaped component 101 has a mounting hole in the middle for mounting the second connector 5, a mounting hole on one side for mounting the third connector 8, and a mounting hole on the other side for mounting the fourth connector 9. A plurality of second stiffening ribs 102 are spaced apart inside the groove of the U-shaped component 101.

[0042] The first connector 2 includes a first connecting rod 21, on which a first tray 23 is mounted. The first tray 23 is secured to the free side of the precast component 1 by a first nut 22. The first tray 23 may be omitted. The first connecting rod 21 may be made of metal or non-metal materials. The first connector 2 may be an anchor bolt, rebar, or other connector.

[0043] The second connector 5 includes a second connecting rod 51, on which a second tray 53 is mounted. The second tray 53 is secured in the grooves of the first connecting device 4 and the second connecting device 10 by a second nut 52. The second tray 53 may be omitted. The second connecting rod 51 may be made of metal or non-metal materials. The second connector 5 may be an anchor bolt, rebar, or other connector.

[0044] like Figure 6 As shown, when the precast component 1 is connected to the first connecting device 4 and the second connecting device 10 using a pre-embedded threaded sleeve stud, the third connecting component 8 consists of a third connecting rod 81 (which can be a stud), a third nut 82, a washer 83, and a threaded sleeve 84 with an enlarged head 85 pre-embedded at the end of the precast component 1. The third connecting rod 81 can be a double-ended stud, a fully threaded stud, etc. The threaded sleeve 84 is made of a cylinder by threading. The enlarged head 85 can be a nut or a welding block. The threaded sleeve 84 and the enlarged head 85 can be connected by bolts, welding, locking, tenon joints, etc.

[0045] like Figures 7-8 As shown, when the prefabricated component 1 is connected to the first connecting device 4 and the second connecting device 10 using pre-embedded (anchor) bolts, the third connecting component 8 consists of a third nut 82, a washer 83, and a third connecting rod 81 pre-embedded at the end of the prefabricated component 1. The third connecting rod 81 can be a pre-embedded (anchor) bolt in the form of a hook type 9, a straight hook type L, a bent type, an umbrella handle type, a bent hook type 7, a single ball type, a multi-ball type, a threaded type, a twisted type, a claw type, an end welded plate type, a tail nut type, a tail enlarged type, or a U-type.

[0046] like Figure 9 As shown, the precast component 1 may be equipped with a reinforcing mesh 3. The reinforcing mesh 3 may be made of metal materials, such as welded steel mesh or wire mesh, or it may be made of non-metallic materials, such as geogrid or fiber mesh.

[0047] As Figure 10 shown, the prefabricated component 1 is connected with the tunnel lining through the first connecting members 2 distributed on the prefabricated component 1 at certain intervals. The arrangement of the first connecting members 2 on the prefabricated component 1 can adopt a quincunx shape, a rectangle shape, a straight line shape, etc. The circumferential and longitudinal intervals between the first connecting members 2 should be adjusted according to actual conditions.

[0048] In specific implementation: first, the prefabricated component 1 is produced in a factory. In the embodiment, the prefabricated component 1 is preferably prefabricated by using ultra-high performance concrete (UHPC). The prefabricated component 1 can also be prefabricated by using ordinary concrete, high-strength concrete, ultra-high-strength concrete, high-ductility concrete, resin, asphalt, rubber, etc. The prefabricated component 1 can also be prefabricated by using metal, non-metal, etc. Holes for installing the first connecting members 2 and grouting holes are reserved on the prefabricated component 1 along the circumferential direction and the longitudinal direction of the tunnel. If the existing structure is a reinforced concrete structure, the distribution of the steel bars should be detected in advance by using a steel bar detector, and the hole position can be appropriately moved to avoid the steel bars. When the prefabricated component 1 is prefabricated, the reinforcing mesh 3 can be additionally provided, and the embedded part of the third connecting member 8 for connecting the first connecting device 4 and the second connecting device 10 is embedded at the two ends along the circumferential direction of the tunnel.

[0049] Secondly, the first connecting device 4 and the second connecting device 10 are manufactured in a factory. The first stiffening ribs 42 are welded in the grooves of the U-shaped members 41 at intervals, and holes are drilled at the designed positions of the middle and both sides of the U-shaped members 41 for installing the second connecting members 5 and the third connecting members 8. The second stiffening ribs 102 are welded in the grooves of the U-shaped members 101 at intervals, and holes are drilled at the designed positions of the middle and both sides of the U-shaped members 101 for installing the second connecting members 5, the third connecting members 8 and the fourth connecting members 9. The first connecting device 4 and the second connecting device 10 can be made of metal or non-metal materials.

[0050] Then, the base surface of the tunnel to be reinforced is treated. When the prefabricated component 1 is installed, the structure surface should be ensured to be dry and clean.

[0051] Then, the installation positions of the prefabricated component 1 and the positions corresponding to the holes for installing the first connecting members 2 and the second connecting members 5 on the existing lining structure are calibrated, and the holes are drilled and cleaned. Then, the wall foot is treated and the fourth connecting members 9 are installed.

[0052] Then, the first connecting device 4 and the second connecting device 10 are pasted on the position of the adhesive layer 6 after being coated with glue, and then they are pressed and fixed through the installation of the second connecting members 5, so that the adhesive layer 6 is solidified.

[0053] Then, the prefabricated component 1 is slid into the chute formed by the first connecting device 4, the second connecting device 10 and the tunnel lining through the assembling machine, manpower or other mechanical equipment, and is moved to the predetermined position, and then is fixed at the predetermined position through the first connecting piece 2.

[0054] Then, the prefabricated component 1 is connected with the first connecting device 4 and the second connecting device 10 through the third connecting piece 8. The second connecting device 10 is connected with the inner side wall of the existing cable groove through the fourth connecting piece 9.

[0055] Finally, the gaps between the two adjacent prefabricated components 1 in the longitudinal direction and the gaps between the prefabricated component 1 and the first connecting device 4 and the second connecting device 10 are sealed by using sealing glue, the gaps between the two ends of the prefabricated component 1 along the tunnel direction and the existing lining structure are sealed by using edge sealing glue, and the grouting holes and the air outlet holes are reserved, and then the grouting material is pressed and injected in the reserved grouting holes in the order from bottom to top, until the gaps between the prefabricated component 1 and the existing lining are filled and compacted by the grouting material.

[0056] In order to improve the waterproof performance of the reinforced structure, a water stop strip or other waterproof measures can be arranged at the joint between the two adjacent prefabricated components 1 in the longitudinal direction, a waterproof layer can be arranged at the gap between the prefabricated component 1 and the first connecting device 4 and the second connecting device 10, and a waterproof gasket can be arranged between the nut of the first connecting piece 2, the second connecting piece 5, the third connecting piece 8 and the fourth connecting piece 9 and the component.

[0057] The technical solution provided by the present application is suitable for reinforcing the highway tunnel lining, the railway tunnel lining (such as Figure 11 ) and the shield tunnel lining (such as Figure 12 ).

[0058] Embodiment 2: Local reinforcement of tunnel lining.

[0059] As shown in Figures 13-16 , when the tunnel lining is locally reinforced, the end of the prefabricated component 1 at the starting and ending positions in the reinforcing range along the tunnel ring is fixed through the third connecting device 11. The third connecting device 11 is connected with the inner side of the tunnel lining through the second connecting piece 5, and the third connecting device 11 is connected with the prefabricated component 1 through the third connecting piece 8.

[0060] As shown in Figure 17 , the third connecting device 11 includes a Z-shaped component 111 and a third stiffening rib 112, one edge plate of the Z-shaped component 111 is provided with a mounting hole for mounting the second connecting piece 5, the middle plate of the Z-shaped component 111 is provided with a mounting hole for mounting the third connecting piece 8, and a plurality of third stiffening ribs 112 are arranged at the right angle side of the Z-shaped component 111.

[0061] The technical scheme provided by the application is suitable for partial reinforcement of highway tunnel lining, partial reinforcement of railway tunnel lining (such as Figure 18 ), and partial reinforcement of shield tunnel lining (such as Figure 19 ).

[0062] According to the disclosure of the above description, those skilled in the art can also make appropriate modifications to the above embodiments. Therefore, the application is not limited to the specific embodiments disclosed and described above. Any modifications or equivalent replacements made within the principles of the application shall fall within the protection scope of the application.

Claims

1. A connecting member used in a tunnel lining reinforcement structure, characterized in that: The device includes a first connecting device (4) disposed between adjacent precast components (1), and a second connecting device (10) or a third connecting device (11) or a second connecting device (10) and a third connecting device (11) for connecting the end of the precast component (1) to the inner side of the tunnel lining. The first connecting device (4) includes a U-shaped component (41), which is connected to the precast component (1) by a third connecting piece (8) embedded in the precast component (1), and the U-shaped component (41) is connected to the inner side of the tunnel lining by a second connecting piece (5). The U-shaped component (41) has an installation hole in the middle for installing the second connecting piece (5), and the U-shaped component (41) has installation holes on both sides for installing the third connecting piece (8). The second connecting device (10) is connected to the inner side of the tunnel lining near the foot of the side wall via a second connecting member (5), the second connecting device (10) is connected to the precast component (1) via a third connecting member (8), and the second connecting device (10) is connected to the inner side wall of the existing cable trough via a fourth connecting member (9); the second connecting device (10) includes a U-shaped component (101), the U-shaped component (101) has a mounting hole in the middle for installing the second connecting member (5), the U-shaped component (101) has a mounting hole on one side for installing the third connecting member (8), and the U-shaped component (101) has a mounting hole on the other side for installing the fourth connecting member (9); The third connecting device (11) is connected to the circumferential end of the precast component (1) at the beginning and end positions of the tunnel lining local reinforcement along the tunnel circumferential range via the third connecting piece (8). The third connecting device (11) is connected to the inner side of the tunnel lining via the second connecting piece (5). The third connecting device (11) includes a Z-shaped component (111). One side plate of the Z-shaped component (111) has an installation hole for installing the second connecting piece (5). The middle plate of the Z-shaped component (111) has an installation hole for installing the third connecting piece (8). Multiple third stiffening ribs (112) are spaced apart on the right-angle side of the Z-shaped component (111).

2. A connecting member for use in a tunnel lining reinforcement structure according to claim 1, characterized in that: The groove of the zigzag component (41) is provided with multiple first stiffening ribs (42) at intervals.

3. A connecting member for tunnel lining reinforcement structure according to claim 2, characterized in that: The groove of the zigzag member (101) is provided with a plurality of second stiffening ribs (102) spaced apart.

4. A connecting member for a tunnel lining reinforcement structure according to any one of claims 1-3, characterized in that: The third connector (8) is a threaded sleeve (84) pre-embedded at the circumferential end of the prefabricated component (1). An enlarged head (85) is installed at one end of the threaded sleeve (84), and the third connecting rod (81) is installed inside the threaded sleeve (84).

5. A connecting member for a tunnel lining reinforcement structure according to any one of claims 1-3, characterized in that: The third connector (8) is an anchor bolt pre-embedded at the circumferential end of the precast component (1), and the first connector (2), the second connector (5), and the fourth connector (9) can be anchor bolts or rebar.

Images