Quick mounting process for main reinforcements of mid-partition wall of multi-arch tunnel

Abstract

The invention discloses a multi-arch tunnel mid-partition main reinforcement rapid installation technology which comprises the following steps that S1, a positioning support is installed on a mid-partition trolley, and the position and angle of the positioning support are adjusted through transverse and longitudinal horizontal bubbles; s2, the U-shaped main reinforcements are inserted into the positioning supports, and the U-shaped main reinforcements are supported through the positioning supports; s3, reinforcing bars are distributed on the U-shaped main bars to form a steel bar framework; and S4, the steel reinforcement framework is connected with an embedded part at the top of the tunnel, and installation of the main reinforcements is completed. By the adoption of the technical scheme, the U-shaped main reinforcement can be supported more stably and more accurately through the positioning support, reinforcement distribution is facilitated, the construction efficiency is improved, meanwhile, the positioning support is installed on the trolley, operators can be protected through safety facilities of the trolley, and the construction safety is improved.

Description

Technical Field

[0001] The present application relates to the technical field of main reinforcement skeleton construction, and in particular to a rapid installation process for main reinforcement of a partition wall in a continuous arch tunnel. Background Art

[0002] At present, standardized steel molds are widely used for concrete pouring in tunnel lining construction. However, in the process of tying and installing steel bars to form the skeleton, no standardized and rapid supporting tooling has been formed.

[0003] Under current construction conditions, most construction workers use rebar of a similar size to the main reinforcement as auxiliary support reinforcement. They use stone pencils to mark the position and spacing of the main reinforcement, and use wire ties to temporarily secure the main reinforcement and stirrups. Furthermore, rebar is a hot-rolled steel bar with good ductility. Compared to aluminum alloy pipes, rebar used as auxiliary support reinforcement is more prone to deformation and instability before the reinforcement skeleton is fully formed. Summary of the Invention

[0004] The purpose of this application is to provide a rapid installation process for the main reinforcement of the partition wall in a continuous arch tunnel, so as to improve the problem that the high-altitude construction of the tie beam is more troublesome and has higher safety hazards.

[0005] In the first aspect, the present application provides a rapid installation process for main reinforcement of a partition wall in a multi-arch tunnel, which adopts the following technical solution: A rapid installation process for main reinforcement of a central partition wall in a continuous arch tunnel comprises the following steps: S1, installing a positioning bracket on a central partition wall trolley, and adjusting the position and angle of the positioning bracket by means of transverse and longitudinal bubbles; S2, inserting a U-shaped main reinforcement on the positioning bracket, and supporting the U-shaped main reinforcement by means of the positioning bracket; S3, arranging reinforcement on the U-shaped main reinforcement to form a reinforcement skeleton; S4, connecting the reinforcement skeleton to the embedded parts at the top of the tunnel, thereby completing the installation of the main reinforcement.

[0006] By adopting the above technical solution, the positioning bracket can support the U-shaped main reinforcement more stably and accurately, facilitate reinforcement arrangement, and improve construction efficiency. At the same time, the positioning bracket is installed on the trolley, and the safety facilities of the trolley can be used to protect the operator, thereby improving the safety of construction.

[0007] Optionally, the positioning bracket includes a first support assembly and a second support assembly, the first support assembly and the second support assembly being respectively used to support the two ends of the U-shaped main reinforcement, and the first support assembly and the second support assembly have the same structure; the first support assembly includes a first steel pipe and a second steel pipe arranged horizontally, the first steel pipe and the second steel pipe being arranged in a vertical direction, both the first steel pipe and the second steel pipe being provided with a limiting hole for inserting the U-shaped main reinforcement, and a lifting self-locking assembly for controlling the distance between the first steel pipe and the second steel pipe being provided between the first steel pipe and the second steel pipe; the lifting assembly includes a first rotating rod and a second rotating rod, the two ends of the first rotating rod and the second rotating rod being slidably connected to the first steel pipe and the second steel pipe respectively, and the first rotating rod and the second rotating rod being able to rotate relative to the first steel pipe and the second steel pipe, the middle parts of the first rotating rod and the second rotating rod being rotatably connected by a rotating shaft, and a locking member for temporarily fixing the first rotating rod and the second rotating rod is provided between the first rotating rod and the second rotating rod.

[0008] By adopting the above technical solution, the first steel pipe and the second steel plate are combined to form a first support assembly or a second support assembly with higher rigidity, and then the first support assembly and the second support assembly are combined to form a stable positioning bracket, so that the U-shaped main reinforcement can be supported more stably and accurately, which is convenient for reinforcement and improves construction efficiency. At the same time, the limiting holes also improve the positioning accuracy of the U-shaped main reinforcement. The positioning bracket is installed on the trolley, and the safety facilities of the trolley can be used to protect the operator, thereby improving the safety of construction. In addition, the first rotating rod and the second rotating rod form an X-shaped support structure, which not only ensures the overall strength to ensure accuracy, but also facilitates storage, improves the convenience of assembly and disassembly and transportation, and is conducive to reuse.

[0009] Optionally, the locking member includes a locking arc plate, a first slider and a first compression spring, the locking arc plate being connected to the side wall of the first rotating rod, the side wall of the second rotating rod being provided with an arc groove for the locking arc plate to pass through, the outer wall of the locking arc plate being provided with a latching tooth, and the latching teeth are arrayed along the bending direction of the locking arc plate, the side wall of the arc groove being provided with a first sliding groove, the first slider sliding in the sliding groove and being used to clamp the latching tooth, the first compression spring being provided in the first sliding groove, one end of the first compression spring abutting against one end of the first slider away from the latching tooth, and the other end abutting against one end of the first sliding groove away from the first latching tooth.

[0010] Through the above technical solution, the cooperation between the first slider and the latch tooth makes it easy to lock the first rotating rod and the second rotating rod when the first rotating rod and the second rotating rod are rotated to a set angle, thereby ensuring the stability between the first steel pipe and the second steel pipe, and the first compression spring can ensure the reliability of the direct engagement between the first slider and the latch tooth.

[0011] Optionally, a first inclined surface is provided on one end of the first sliding block facing the first latching tooth, and the first inclined surface is located on a side of the first sliding block away from the first rotating rod.

[0012] Through the above technical solution, the first inclined surface is convenient for abutting against the latching tooth when the first rotating rod and the second rotating rod rotate along the adjustment direction, so as to press the first slider back into the first sliding groove, thereby facilitating the rotation of the first rotating rod and the second rotating rod. When the first rotating rod and the second rotating rod rotate in opposite directions, the side of the first slider away from the first inclined surface contacts the latching tooth to achieve stable latching.

[0013] Optionally, a first shift rod is connected to the side wall of the first slider, an end of the first shift rod away from the first slider passes through a second rotating rod, and the second rotating rod is provided with a first shift groove for sliding of the first shift rod.

[0014] Through the above technical solution, the first shifting rod can easily drive the first slider to move, so as to release the engagement between the first slider and the locking teeth and facilitate the storage of the first steel pipe and the second steel pipe.

[0015] Optionally, both ends of the first rotating rod or the second rotating rod are hinged with sliding frames, and the side walls of the first steel tube or the second steel tube are connected with sliding rails, and the sliding frames cooperate with the sliding rails to enable the sliding frames to move relative to the sliding rails.

[0016] Through the above technical solution, the cooperation between the sliding frame and the sliding rail improves the stability of the first rotating rod or the second rotating rod sliding relative to the first steel pipe or the second steel pipe.

[0017] Optionally, the slide rail adopts a T-shaped block, and the sliding frame is provided with a T-shaped slot that cooperates with the T-shaped block.

[0018] By adopting the above technical solution, the cooperation between the T-shaped block and the T-shaped slot can further improve the stability of the movement of the sliding frame and the sliding rail.

[0019] Optionally, a locking bolt is threadedly connected to the side wall of the sliding frame, and the head of the locking bolt can be tightly pressed against the T-shaped block.

[0020] By adopting the above technical solution, the locking bolt can lock the sliding frame and the T-shaped block to achieve relative fixation after the relative positions of the T-shaped block and the sliding frame are determined.

[0021] Optionally, the limiting hole is provided along one side in the horizontal direction and passes through the first steel pipe or the second steel pipe, and the first steel pipe or the second steel pipe is provided with a clamping piece for clamping the U-shaped main rib.

[0022] Through the above technical solution, one side of the limiting hole is set to be through, so that the U-shaped main reinforcement can be clamped into the limiting hole from the side, and the U-shaped main reinforcement can be clamped through the clamping piece, thereby improving the accuracy of the U-shaped main reinforcement and facilitating subsequent reinforcement.

[0023] Optionally, the clamping member includes a second slider and a second compression spring, a second sliding groove is opened on the side wall of the limiting hole, the second slider slides in the second sliding groove, the second compression spring is arranged at the end of the second slider and the second sliding groove away from the limiting hole, and a second inclined surface is provided at the end of the second slider away from the compression spring. When the U-shaped main rib enters the limiting hole, the U-shaped main rib abuts against the second inclined surface to press the second slider back into the second sliding groove.

[0024] By adopting the above technical solution, when the U-shaped main rib is inserted into the limiting hole, the U-shaped main rib first abuts against the second inclined surface so that the second slider is pressed back into the second slide groove. When the U-shaped main rib passes over the second slider, the second slider retracts under the action of the second compression spring to lock the U-shaped main rib in the limiting hole.

[0025] Optionally, a third inclined surface is further provided on the second slider, and the third inclined surface is located on the side of the second slider away from the second inclined surface. After the U-shaped steel bar enters the limiting hole, the third inclined surface abuts against the U-shaped steel bar.

[0026] By adopting the above technical solution, when the second slider is reset under the action of the second compression spring, the third inclined surface abuts against the U-shaped main rib, pushing the U-shaped main rib to contact the side wall of the limiting hole, thereby locking the U-shaped main rib and facilitating adaptation to U-shaped main ribs of different sizes.

[0027] In summary, this application includes at least one of the following beneficial technical effects: 1. The first steel pipe and the second steel plate are used to form a first support assembly or a second support assembly with higher rigidity, and the first support assembly and the second support assembly are used to form a stable positioning bracket, which can support the U-shaped main reinforcement more stably and accurately, facilitate reinforcement arrangement, and improve construction efficiency. At the same time, the limit holes also improve the positioning accuracy of the U-shaped main reinforcement. The positioning bracket is installed on the trolley, and the safety facilities of the trolley can be used to protect the operator, thereby improving the safety of construction. In addition, the first rotating rod and the second rotating rod form an X-shaped support structure, which not only ensures the overall strength and accuracy, but also facilitates storage, improves the convenience of assembly, disassembly and transportation, and facilitates reuse. 2. The first slider cooperates with the latching teeth to lock the first and second rotating rods when they rotate to a set angle, thereby ensuring the stability between the first and second steel tubes. The first compression spring ensures the reliability of the direct engagement between the first slider and the latching teeth. 3. The first inclined surface facilitates contact with the latching teeth when the first rotating rod and the second rotating rod rotate in the adjustment direction, thereby pressing the first slider back into the first sliding groove, facilitating the rotation of the first rotating rod and the second rotating rod. When the first rotating rod and the second rotating rod rotate in the opposite direction, the side of the first slider away from the first inclined surface contacts the latching teeth, achieving stable engagement. 4. The cooperation between the sliding frame and the sliding rail improves the stability of the first rotating rod or the second rotating rod sliding relative to the first steel pipe or the second steel pipe; 5. The cooperation between the T-shaped block and the T-shaped slot can further improve the stability of the sliding frame and the sliding rail; 6. The locking bolt is convenient for locking the sliding frame and the T-block to achieve relative fixation after the relative positions of the T-block and the sliding frame are determined; 7. One side of the limiting hole is through-set, so that the U-shaped main reinforcement can be clamped into the limiting hole from the side, and the U-shaped main reinforcement can be clamped by the clamping piece, which improves the accuracy of the U-shaped main reinforcement and facilitates subsequent reinforcement arrangement; 8. When the U-shaped main reinforcement is inserted into the limiting hole, the U-shaped main reinforcement first abuts against the second inclined surface to press the second slider back into the second slide groove. When the U-shaped main reinforcement passes over the second slider, the second slider retracts under the action of the second compression spring to lock the U-shaped main reinforcement in the limiting hole. When the second slider is reset under the action of the second compression spring, the third inclined surface abuts against the U-shaped main reinforcement, pushing the U-shaped main reinforcement to contact the side wall of the limiting hole, thereby locking the U-shaped main reinforcement and facilitating adaptation to U-shaped main reinforcements of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention is a schematic flow chart of a rapid installation process for main reinforcement of a partition wall in a multi-arch tunnel.

[0029] Figure 2 It is a structural schematic diagram of the first supporting assembly in the present invention.

[0030] Figure 3 It is a structural schematic diagram reflecting the installation positions of the trolley, the first support assembly and the second support assembly in the present invention.

[0031] Figure 4 It is a structural schematic diagram showing the installation positions of the first supporting assembly, the second supporting assembly and the U-shaped main reinforcement in the present invention.

[0032] Figure 5 yes Figure 4 A partial enlarged view of part A in the middle.

[0033] Figure 6 yes Figure 4 A partial enlarged view of part B in the middle.

[0034] Figure 7 It is a schematic cross-sectional view of the locking member in the present invention.

[0035] Figure 8 yes Figure 7 A partial enlarged view of part C in the middle.

[0036] Figure 9 It is a structural schematic diagram of the clamping member in the present invention.

[0037] In the figure, 1. trolley; 11. telescopic rod; 12. clamp; 2. first supporting assembly; 21. first steel pipe; 211. limiting hole; 22. second steel pipe; 23. lifting assembly; 231. first rotating rod; 232. second rotating rod; 24. locking piece; 241. locking arc plate; 242. first slider; 243. first compression spring; 244. arc groove; 245. latching tooth I; 246. first slide groove; 247. first inclined surface; 248. first shift rod; 3. second supporting assembly; 4. sliding frame; 41. T-shaped block; 42. T-shaped groove; 43. locking bolt; 5. clamping piece; 51. second slider; 52. second compression spring; 53. second slide groove; 54. second inclined surface; 55. third inclined surface; 56. second shift rod; 6. U-shaped main reinforcement. DETAILED DESCRIPTION

[0038] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0039] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more. In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be broadly understood, for example, to mean fixed, removable, or integral; mechanically or electrically connected; directly or indirectly through an intermediary; or internally connected between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Example 1 In a first aspect, the present application discloses a rapid installation process for main reinforcement of a partition wall in a continuous arch tunnel.

[0041] A rapid installation process for the main reinforcement of the partition wall in a continuous arch tunnel, referring to Figure 1 , including the following steps: S1. Install the positioning bracket on the middle partition wall trolley 1 and adjust the position and angle of the positioning bracket through the horizontal and vertical bubbles; S2. Insert the U-shaped main reinforcement 6 onto the positioning bracket and support the U-shaped main reinforcement 6 through the positioning bracket; S3, reinforcing the U-shaped main reinforcement 6 to form a reinforcement skeleton; S4. Connect the steel skeleton to the embedded parts on the top of the tunnel to complete the installation of the main reinforcement.

[0042] Reference Figures 2 to 9 The positioning bracket includes a first support assembly 2 and a second support assembly 3, which are respectively used to support the two ends of the U-shaped main reinforcement 6, and the first support assembly 2 and the second support assembly 3 have the same structure; the first support assembly 2 includes a first steel pipe 21 and a second steel pipe 22 arranged horizontally, and the first steel pipe 21 and the second steel pipe 22 are arranged in a vertical direction. The first steel pipe 21 and the second steel pipe 22 are both provided with a limiting hole 211 for inserting the U-shaped main reinforcement 6, and a lifting self-locking assembly for controlling the distance between the first steel pipe 21 and the second steel pipe 22 is provided between the first steel pipe 21 and the second steel pipe 22. The lifting assembly 23 includes a first rotating rod 231 and a second rotating rod 232. The two ends of the first rotating rod 231 and the second rotating rod 232 are respectively slidably connected to the first steel pipe 21 and the second steel pipe 22, and the first rotating rod 231 and the second rotating rod 232 can rotate relative to the first steel pipe 21 and the second steel pipe 22. The middle parts of the first rotating rod 231 and the second rotating rod 232 are rotatably connected through a rotating shaft. A locking member 24 is provided between the first rotating rod 231 and the second rotating rod 232 to temporarily fix the first rotating rod 231 and the second rotating rod 232.

[0043] During operation, the first steel pipe 21 and the second steel plate are used to cooperate to form a first support assembly 2 or a second support assembly 3 with higher rigidity, and then the first support assembly 2 and the second support assembly 3 are used to cooperate to form a stable positioning bracket, so that the U-shaped main reinforcement 6 can be supported more stably and accurately, which is convenient for reinforcement and improves construction efficiency. At the same time, the limiting hole 211 also improves the positioning accuracy of the U-shaped main reinforcement 6, and the positioning bracket is installed on the trolley 1, and the safety facilities of the trolley 1 can be used to protect the operator, thereby improving the safety of construction. In addition, the first rotating rod 231 and the second rotating rod 232 form an X-shaped support structure, which not only ensures the overall strength to ensure accuracy, but also facilitates storage, improves the convenience of assembly and disassembly and transportation, and is conducive to reuse.

[0044] It should be noted that the cross-sections of the first steel tube 21 and the second steel tube 22 can be circular or rectangular. The first steel tube 21 and the second steel tube 22 can be made of aluminum alloy, which is lightweight and has high strength. Compared with using threaded steel to support the main reinforcement, the strength is greatly improved.

[0045] A telescopic rod 11 is hinged on the middle partition wall trolley 1, and a clamp 12 for connecting to the first steel pipe 21 or the second steel pipe 22 is hinged on the telescopic rod 11. Both ends of the telescopic rod 11 are hinged, and the telescopic rod 11 itself can be extended and retracted, which facilitates the adjustment of the position angle of the positioning bracket. When positioning the positioning bracket, the angle can be adjusted by the horizontal and vertical bubbles. The hinges at both ends of the telescopic rod 11 can be locked by bolts, and the clamp 12 can use its own elasticity or bolts to clamp the first steel pipe 21 or the second steel pipe 22. The positioning bracket has two first steel pipes 21 and two second steel pipes 22, and the telescopic rod 11 and the clamp 12 structure are also provided with four groups accordingly.

[0046] Specifically, the locking member 24 includes a locking arc plate 241, a first slider 242 and a first compression spring 243. The locking arc plate 241 is connected to the side wall of the first rotating rod 231. The side wall of the second rotating rod 232 is provided with an arc groove 244 for the locking arc plate 241 to pass through. The outer wall of the locking arc plate 241 is provided with a latching tooth. There are several latching teeth arrayed along the bending direction of the locking arc plate 241. The side wall of the arc groove 244 is provided with a first sliding groove 246. The first slider 242 slides in the sliding groove and is used to clamp the latching tooth. The first compression spring 243 is provided in the first sliding groove 246. One end of the first compression spring 243 abuts against the end of the first slider 242 away from the latching tooth, and the other end abuts against the end of the first sliding groove 246 away from the first latching tooth. Through the cooperation between the first slider 242 and the latching teeth, the first rotating rod 231 and the second rotating rod 232 are locked when the first rotating rod 231 and the second rotating rod 232 are rotated to the set angle, thereby ensuring the stability between the first steel tube 21 and the second steel tube 22. The first compression spring 243 can ensure the reliability of the direct engagement between the first slider 242 and the latching teeth.

[0047] More specifically, a first inclined surface 247 is provided on one end of the first slider 242 that faces the first latching tooth. The first inclined surface 247 is located on the side of the first slider 242 that is away from the first rotating rod 231. The first inclined surface 247 facilitates contact with the latching tooth when the first rotating rod 231 and the second rotating rod 232 rotate in the adjustment direction, thereby pressing the first slider 242 back into the first sliding groove 246, facilitating rotation of the first rotating rod 231 and the second rotating rod 232. When the first rotating rod 231 and the second rotating rod 232 rotate in opposite directions, the side of the first slider 242 away from the first inclined surface 247 contacts the latching tooth, achieving a stable latching connection.

[0048] Furthermore, a first lever 248 is connected to the side wall of the first slider 242. The end of the first lever 248, away from the first slider 242, extends through the second rotating rod 232. The second rotating rod 232 defines a first lever slot for the first lever 248 to slide. The first lever 248 facilitates movement of the first slider 242, thereby releasing the engagement between the first slider 242 and the latching teeth and facilitating the storage of the first and second steel tubes 21 and 22.

[0049] Sliding frames 4 are hingedly connected to both ends of the first rotating rod 231 or the second rotating rod 232. Sliding rails are connected to the sidewalls of the first steel tube 21 or the second steel tube 22. The sliding frames 4 cooperate with the rails to enable relative movement of the sliding frames 4. The cooperation between the sliding frames 4 and the rails enhances the stability of the sliding of the first rotating rod 231 or the second rotating rod 232 relative to the first steel tube 21 or the second steel tube 22.

[0050] Specifically, the slide rail utilizes a T-shaped block 41, and the slide frame 4 is provided with a T-shaped slot 42 that mates with the T-shaped block 41. The cooperation between the T-shaped block 41 and the T-shaped slot 42 further enhances the stability of the movement of the slide frame 4 and the slide rail. A locking bolt 43 is threadedly connected to the side wall of the slide frame 4, the head of which is capable of abutting against the T-shaped block 41. Once the relative position of the T-shaped block 41 and the slide frame 4 is determined, the locking bolt 43 facilitates locking the slide frame 4 and the T-shaped block 41 to achieve relative fixation.

[0051] A limiting hole 211 is provided horizontally through one side of the first steel tube 21 or the second steel tube 22. A clamping member 5 is provided on the first steel tube 21 or the second steel tube 22 for clamping the U-shaped main reinforcement 6. The through-hole 211 on one side facilitates the insertion of the U-shaped main reinforcement 6 into the limiting hole 211 from the side. The clamping member 5 secures the U-shaped main reinforcement 6, improving the precision of the U-shaped main reinforcement 6 and facilitating subsequent reinforcement arrangement.

[0052] Specifically, the clamping member 5 includes a second slider 51 and a second compression spring 52. A second chute 53 is defined on the sidewall of the limiting hole 211. The second slider 51 slides within the second chute 53. The second compression spring 52 is disposed at the end of the second slider 51 and the second chute 53 away from the limiting hole 211. A second inclined surface 54 is disposed on the end of the second slider 51 away from the compression spring. When the U-shaped main rib 6 enters the limiting hole 211, the U-shaped main rib 6 abuts against the second inclined surface 54, pressing the second slider 51 back into the second chute 53. A second lever 56 is fixedly connected to the sidewall of the second slider 51. The end of the second lever 56 away from the second slider 51 extends out of the first steel tube 21 or the second steel tube 22, so that the second slider 51 can be moved by shifting the second lever 56. When the U-shaped main rib 6 is inserted into the limiting hole 211, the U-shaped main rib 6 first abuts against the second inclined surface 54 so that the second slider 51 is pressed back into the second slide groove 53. After the U-shaped main rib 6 passes over the second slider 51, the second slider 51 retracts under the action of the second compression spring 52 to lock the U-shaped main rib 6 in the limiting hole 211.

[0053] More specifically, the second slider 51 is further provided with a third inclined surface 55, located on the side of the second slider 51 away from the second inclined surface 54. After the U-shaped bar enters the retaining hole 211, the third inclined surface 55 abuts the U-shaped bar. When the second slider 51 is reset under the action of the second compression spring 52, the third inclined surface 55 abuts the U-shaped main bar 6, pushing the U-shaped main bar 6 into contact with the sidewall of the retaining hole 211, thereby locking the U-shaped main bar 6. This also facilitates the adaptation of U-shaped main bars 6 of different sizes and ensures greater stability for all U-shaped main bars 6 of different sizes. During installation, the U-shaped main bar 6 is tilted and inserted between the first support assembly 2 and the second support assembly 3. One side of the U-shaped main bar 6 is then inserted into the retaining hole 211 of the first support assembly 2. The U-shaped main bar 6 is then rotated about the side of the U-shaped main bar 6 located within the first support assembly 2, so that the other side of the U-shaped main bar 6 is inserted into the retaining hole 211 of the second support assembly 3, completing the installation of the U-shaped main bar 6.

[0054] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A rapid installation process for main reinforcement of partition walls in a multi-arch tunnel, characterized in that: The steps include: S1. Install the positioning bracket on the middle partition wall trolley (1), and adjust the position and angle of the positioning bracket through the horizontal and vertical bubbles; S2, inserting the U-shaped main reinforcement (6) onto the positioning bracket, and supporting the U-shaped main reinforcement (6) through the positioning bracket; S3, providing reinforcement on the U-shaped main reinforcement (6) to form a reinforcement skeleton; S4. Connect the steel skeleton to the embedded parts on the top of the tunnel to complete the installation of the main reinforcement.

2. The rapid installation process for main reinforcement of a partition wall in a multi-arch tunnel according to claim 1 is characterized by: The positioning bracket comprises a first supporting assembly (2) and a second supporting assembly (3), wherein the first supporting assembly (2) and the second supporting assembly (3) are respectively used to support two ends of the U-shaped main reinforcement (6), and the first supporting assembly (2) and the second supporting assembly (3) have the same structure; The first supporting assembly (2) comprises a first steel pipe (21) and a second steel pipe (22) arranged horizontally, the first steel pipe (21) and the second steel pipe (22) being arranged in a vertical direction, the first steel pipe (21) and the second steel pipe (22) being provided with a limiting hole (211) for inserting a U-shaped main reinforcement (6), and a lifting self-locking assembly for controlling the distance between the first steel pipe (21) and the second steel pipe (22); The lifting assembly (23) includes a first rotating rod (231) and a second rotating rod (232), the two ends of the first rotating rod (231) and the second rotating rod (232) are respectively slidably connected to the first steel pipe (21) and the second steel pipe (22), and the first rotating rod (231) and the second rotating rod (232) can rotate relative to the first steel pipe (21) and the second steel pipe (22), the middle parts of the first rotating rod (231) and the second rotating rod (232) are rotatably connected through a rotating shaft, and a locking member (24) is provided between the first rotating rod (231) and the second rotating rod (232) for temporarily fixing the first rotating rod (231) and the second rotating rod (232).

3. The rapid installation process for main reinforcement of a partition wall in a multi-arch tunnel according to claim 2 is characterized by: The locking member (24) includes a locking arc plate (241), a first slider (242) and a first compression spring (243), wherein the locking arc plate (241) is connected to the side wall of the first rotating rod (231), and the side wall of the second rotating rod (232) is provided with an arc groove (244) for the locking arc plate (241) to pass through, and the outer wall of the locking arc plate (241) is provided with a latching tooth, and the latching tooth is arrayed in a plurality of arrays along the bending direction of the locking arc plate (241), and the side wall of the arc groove (244) is provided with a first sliding groove (246), the first slider (242) slides in the sliding groove and is used to clamp the latching tooth, and the first compression spring (243) is provided in the first sliding groove (246), one end of the first compression spring (243) abuts against one end of the first slider (242) away from the latching tooth, and the other end abuts against one end of the first sliding groove (246) away from the first latching tooth.

4. The rapid installation process for main reinforcement of a partition wall in a multi-arch tunnel according to claim 3 is characterized by: A first inclined surface (247) is provided on one end of the first sliding block (242) facing the first latching tooth. The first inclined surface (247) is located on a side of the first sliding block (242) away from the first rotating rod (231).

5. The rapid installation process for main reinforcement of a partition wall in a multi-arch tunnel according to claim 4 is characterized by: A first shifting rod (248) is connected to the side wall of the first slider (242); one end of the first shifting rod (248) away from the first slider (242) passes through the second rotating rod (232); and the second rotating rod (232) is provided with a first shifting groove for the first shifting rod (248) to slide.

6. The rapid installation process for main reinforcement of a partition wall in a multi-arch tunnel according to claim 5 is characterized by: Both ends of the first rotating rod (231) or the second rotating rod (232) are hinged with a sliding frame (4), and the side walls of the first steel tube (21) or the second steel tube (22) are connected with a sliding rail. The sliding frame (4) cooperates with the sliding rail so that the sliding frame (4) can move relative to the sliding rail.

7. The rapid installation process for main reinforcement of a partition wall in a multi-arch tunnel according to claim 6 is characterized by: The slide rail adopts a T-shaped block (41), and the slide frame (4) is provided with a T-shaped groove (42) matched with the T-shaped block (41).

8. The rapid installation process for main reinforcement of a partition wall in a multi-arch tunnel according to claim 7, characterized in that: A locking bolt (43) is threadedly connected to the side wall of the sliding frame (4), and the head of the locking bolt (43) can be tightly pressed against the T-shaped block (41).

9. The rapid installation process for main reinforcement of a partition wall in a multi-arch tunnel according to claim 8, characterized in that: The limiting hole (211) is provided along one side of the horizontal direction and passes through the first steel pipe (21) or the second steel pipe (22); the first steel pipe (21) or the second steel pipe (22) is provided with a clamping piece (5) for clamping the U-shaped main rib (6).

10. The rapid installation process for main reinforcement of a partition wall in a multi-arch tunnel according to claim 9, characterized in that: The clamping member (5) includes a second slider (51) and a second compression spring (52). A second sliding groove (53) is provided on the side wall of the limiting hole (211). The second slider (51) slides in the second sliding groove (53). The second compression spring (52) is provided at one end of the second slider (51) and the second sliding groove (53) away from the limiting hole (211). A second inclined surface (54) is provided at one end of the second slider (51) away from the compression spring. When the U-shaped main rib (6) enters the limiting hole (211), the U-shaped main rib (6) abuts against the second inclined surface (54) so that the second slider (51) is pressed back into the second sliding groove (53). The second slider (51) is further provided with a third inclined surface (55), which is located on a side of the second slider (51) away from the second inclined surface (54). After the U-shaped steel bar enters the limiting hole (211), the third inclined surface (55) abuts against the U-shaped steel bar.

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