A large-section tunnel arch support structure

Abstract

The application relates to a large-section tunnel arch support structure and relates to the technical field of tunnel construction, which comprises multiple arch segments, the end of the mutually close end of two adjacent arch segments is fixed with two mounting rings, the mounting rings are located on the two sides of the end of the arch segment and the two mounting rings are simultaneously located on the side close to the inner arc surface of the arch segment, a rotating column is arranged between the two adjacent arch segments, the rotating column passes through the mounting rings and is coaxially arranged with the mounting rings and is rotationally connected, the rotating column is provided with a fixing piece for limiting the position of the mounting ring on the rotating column, an arc-shaped connecting pipe is arranged between the two adjacent arch segments, the arc-shaped connecting pipe is slidingly connected on the arch segment, a driving assembly for driving the sliding of the arc-shaped connecting pipe is arranged between the two adjacent arch segments, and the arc-shaped connecting pipe is provided with a locking assembly for fixing the arc-shaped connecting pipe at the connecting position of the two adjacent arch segments. The application has the effect of improving the convenience of the arch support installation in the tunnel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel construction, and particularly relates to a large-section tunnel arch support structure. BACKGROUND

[0002] The large-section tunnel is a product of the times of rapid development of transportation, and the interaction between the surrounding rock and the support system has been a hotspot and difficulty in the research of tunnel engineering construction.

[0003] Among the many schemes of tunnel support construction, the tunnel arch construction is the most important for the safety of the tunnel, the tunnel arch itself has a certain strength and can resist bending, and the texture is relatively hard, after the tunnel arch construction is formed, the working environment in the tunnel will be significantly improved.

[0004] The cross section of the large-section tunnel is large, in order to meet the requirements, the length of each arch is also large, and in order to facilitate transportation, the arch is generally divided into multiple arch segments, and thus when the arch is erected in the tunnel, multiple arch segments need to be aligned and welded to form a whole.

[0005] According to the related technology in the above, when the arch segments are welded, the two arch segments need to be adjusted in the tunnel, the end portions of the two arch segments are aligned and welded and fixed, but due to the large mass of the arch segment, it is difficult to accurately adjust the position of the end portion of the arch segment during the tunnel butt joint process, and the multiple adjustment and alignment will also increase the labor intensity of the workers. SUMMARY

[0006] In order to facilitate the support and installation of the arch in the tunnel, the present application provides a large-section tunnel arch support structure.

[0007] The large-section tunnel arch support structure provided by the present application adopts the following technical scheme:

[0008] The utility model provides a large section tunnel arch support structure, including a plurality of arch segments, the end of mutual approach of two adjacent arch segments is fixed with two mounting rings, the mounting ring is located the end of two sides of arch segment and two mounting rings are located the side of the inner arc surface of approaching arch segment simultaneously, the rotating column for connecting the mounting ring is equipped between two adjacent arch segments, the rotating column passes through the mounting ring and is coaxial with the mounting ring and is connected, the rotating column is equipped with the fixed part for limiting the position of mounting ring on the rotating column, the arc connecting pipe for fixing two arch segments is equipped between two adjacent arch segments, the arc connecting pipe is connected on the arch segment and the driving assembly for driving the arc connecting pipe is equipped between two adjacent arch segments and is connected on the arch segment, the arc connecting pipe is equipped with the lock assembly for fixing the arc connecting pipe at the connecting place of two adjacent arch segments.

[0009] By adopting the above technical scheme, when erecting the arch, the arch segments can be placed from the ground in the tunnel first, and the mounting rings between the adjacent two arch segments are spaced apart and located in the same axial direction, then the rotating column is inserted into the four mounting rings, and the position of the mounting ring is limited by the fixed part, so that the arch segments are preliminarily connected and the position of the arch segments is preliminarily fixed, then the central arch segment is jacked up to the top of the tunnel by the jacking machine, then the arc connecting pipe can be slid to the connecting place of the two arch segments under the action of the driving assembly, then the connecting place of the two arch segments is fixed by the lock assembly, thereby the process of aligning the end of the arch segment by multiple butt joints when erecting the arch in the tunnel can be omitted, the arch segment is further limited by the arc connecting pipe, and the arc connecting pipe is fixed at the connecting place of the two arch segments by the lock part, so that the connecting place of the arch segment can be quickly fixed and the compressive strength of the connecting place of the arch segment can be improved, thereby the support installation of the arch in the tunnel is more convenient, and the accuracy of the butt joint of the connecting place of the arch segment is improved.

[0010] Optionally, the fixed part is a fixed nut, which is located at the two ends of the rotating column and is threadedly connected with the rotating column.

[0011] By adopting the above technical scheme, after the rotating column passes through the mounting ring, the angle fixed nut can be screwed to the end of the rotating column, thereby quickly limiting the mounting ring on the rotating column.

[0012] Optionally, the end face of one of the two mounting rings at one end of the arch segment is provided with a plug-in hole, and the end face of the other mounting ring is fixedly connected with a plug-in rod, and the plug-in rod is located at the side of the two mounting rings that approaches each other.

[0013] By adopting the technical scheme, when the mounting rings located on different arch frame segments are aligned, the insertion rod on one of the mounting rings is inserted into the insertion hole on the other mounting ring. Thus, the stability of the two mounting rings on the rotating column is improved.

[0014] Optionally, the driving assembly comprises an abutting rod arranged between the two adjacent arch frame segments, the abutting rod is fixed to the end of one of the arch frame segments, the arc-shaped connecting pipe is slidingly connected to the other arch frame segment, the end of the arch frame segment slidingly connected with the arc-shaped connecting pipe is provided with a groove, a cavity is arranged in the side wall of the groove, a pulley is rotatably connected in the cavity, a connecting rope is sleeved on the pulley, a first sliding groove is arranged on the outer wall of the arch frame segment, a second sliding groove is arranged on the inner wall of the groove, one end of the connecting rope is located at the first sliding groove and fixedly connected with a driving plate, the driving plate is slidingly connected in the first sliding groove, the driving plate abuts against the end of the arc-shaped connecting pipe, the other end of the connecting rope is located at the second sliding groove and fixedly connected with a stress plate, the stress plate is slidingly connected in the second sliding groove.

[0015] By adopting the technical scheme, when the ends of the two adjacent arch frame segments are aligned and the ends of the two arch frame segments are moved towards each other, the abutting rod can abut against the stress plate, and the abutting rod drives the driving plate to move away from the connection of the ends of the two arch frame segments, then the driving plate drives the arc-shaped connecting pipe to move towards the connection of the ends of the two arch frame segments under the action of the connecting rope and the pulley, and finally the arc-shaped connecting pipe is located at the connection of the ends of the two arch frame segments. Thus, the arc-shaped connecting pipe can be automatically moved to the connection of the two arch frame segments during the butt joint process, and the position of the butt joint of the two arch frame segments is automatically fixed.

[0016] Optionally, the abutting rod is an arc-shaped rod and the curvature of the abutting rod is the same as the curvature of the arch frame segment.

[0017] By adopting the technical scheme, the movement of the abutting rod driving the driving plate is smoother, and the dynamic friction between the abutting rod and the driving plate is reduced.

[0018] Optionally, the outer wall of the end of the arch frame segment is fixedly connected with a receiving plate for limiting the arc-shaped connecting pipe on the arch frame segment, a clamping groove for clamping the end of the arc-shaped connecting pipe is arranged on the side of the receiving plate facing the arc-shaped connecting pipe.

[0019] By adopting the technical scheme, the arc-shaped connecting pipe can slide to the receiving plate along the arch segment under the driving of the driving plate, and the end of the arc-shaped connecting pipe can be clamped into the clamping groove after the butt joint of the two adjacent arch segments is completed, so that the position of the arc-shaped connecting pipe on the arch segment can be limited by the clamping groove, and the stability of the arc-shaped connecting pipe on the arch segment is further improved.

[0020] Optionally, a limiting groove is formed in the driving plate, and the end of the arc-shaped connecting pipe is fixed to the groove bottom of the limiting groove.

[0021] By adopting the technical scheme, the sliding direction of the arc-shaped connecting pipe can be limited, and the stability of the arc-shaped connecting pipe when moving with the driving plate can be improved.

[0022] Optionally, the locking assembly is provided as a plurality of locking screws, a plurality of threaded holes are formed in the outer wall of the arc-shaped connecting pipe and the end side wall of the two end portions of the arch segments close to each other, and the threaded holes in the arc-shaped connecting pipe and the arch segments are coaxially arranged one by one.

[0023] By adopting the technical scheme, the locking screws can be screwed into the threaded holes of the arc-shaped connecting pipe and the arch segments, so that the arc-shaped connecting pipe can be quickly and stably fixed between the two arch segments, and the number of locking screws can be increased or reduced according to the tunnel rock condition.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] 1. The process of butt joint of the end of the arch segment to the arch segment during the erection of the arch segment in the tunnel can be omitted, the arch segment is further limited by the rear arc-shaped connecting pipe, and the arc-shaped connecting pipe is fixed at the connection of the two arch segments by the locking member, so that the connection of the arch segment can be quickly fixed, the compressive strength of the connection of the arch segment can be improved, the installation of the arch support in the tunnel is more convenient, and the accuracy of the butt joint of the connection of the arch segment is improved.

[0026] 2. The arc-shaped connecting pipe can be automatically moved to the connection of the two arch segments during the butt joint process, so that the position of the butt joint of the two arch segments is automatically fixed.

[0027] 3. The arc-shaped connecting pipe can slide to the receiving plate along the arch segment under the driving of the driving plate, and the end of the arc-shaped connecting pipe can be clamped into the clamping groove after the butt joint of the two adjacent arch segments is completed, so that the position of the arc-shaped connecting pipe on the arch segment can be limited by the clamping groove, and the stability of the arc-shaped connecting pipe on the arch segment is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1is a schematic diagram of the overall structure of an embodiment of the present application;

[0029] Figure 2 is a schematic diagram of the structure of a mounting ring of an embodiment of the present application;

[0030] Figure 3 is a schematic diagram of the structure of a plug-in rod of an embodiment of the present application;

[0031] Figure 4 is a schematic diagram of the structure of an abutting rod of an embodiment of the present application;

[0032] Figure 5 is a schematic diagram of the structure of a cavity of an embodiment of the present application;

[0033] Figure 6 is Figure 1 is a partial enlarged schematic diagram of part A;

[0034] In the figure, 1, arch segment; 11, groove; 12, cavity; 13, first sliding groove; 14, second sliding groove; 2, mounting ring; 21, plug-in hole; 22, plug-in rod; 3, rotating column; 31, fixed nut; 4, arc-shaped connecting pipe; 5, driving assembly; 51, abutting rod; 52, driving plate; 521, limiting groove; 53, force receiving plate; 54, connecting rope; 55, pulley; 6, locking assembly; 61, locking screw; 7, receiving plate; 71, clamping groove. DETAILED DESCRIPTION

[0035] The following will be described in detail below with reference to the accompanying drawings. Figure 1 - the accompanying drawings Figure 6 The present application will be described in further detail.

[0036] An embodiment of the present application is a large-section tunnel arch support structure, which, with reference to Figure 1 and Figure 2 includes three arch segments 1 arranged in a circular arc shape, and two mounting rings 2 are fixedly connected to the end of each of the two adjacent arch segments 1, and the mounting rings 2 are located on both sides of the end face of the arch segment 1 close to the inner arc surface of the arch segment 1. The mounting rings 2 on different arch segments 1 are arranged at intervals, and the four mounting rings 2 are coaxially arranged and a same rotating column 3 is arranged between the four mounting rings 2, the mounting ring 2 and the rotating column 3 are slidingly and rotationally connected, and the rotating column 3 is coaxially arranged with the mounting ring 2. A fixing member for limiting the position of the mounting ring 2 on the rotating column 3 is arranged on the rotating column, the fixing member is arranged as the rotating column 3, a fixed nut 31 is threadedly connected to both ends of the rotating column 3 and is threadedly connected with the rotating column 3, and the fixed nut 31 abuts against the end face of the mounting ring 2.

[0037] With reference to Figure 1 , Figure 2 and Figure 3When the two arch segment 1 are installed, the installation ring 2 on the two adjacent arch segment 1 can be aligned, and the rotating column 3 can pass through the four installation ring 2 at the same time, and then the fixing nut 31 is screwed on both ends of the rotating column 3 and abuts against the end face of the installation ring 2, thereby preliminarily fixing the two arch segment 1 in the tunnel. In order to improve the stability between the two installation ring 2 on different arch segment 1, a plug-in rod 22 is arranged between the two adjacent installation ring 2, the axis of the plug-in rod 22 is parallel to the axis of the installation ring 2, one end of the plug-in rod 22 is fixedly connected to the end face of one of the installation ring 2, and the end face of the other installation ring 2 is provided with a plug-in hole 21, and the plug-in rod 22 is plugged into the plug-in hole 21.

[0038] Referring to Figure 4 , Figure 5 and Figure 6 , the same arc-shaped connecting pipe 4 is arranged between the two adjacent arch segment 1, one end of the arc-shaped connecting pipe 4 is provided with a receiving plate 7, the receiving plate 7 is fixedly connected to one of the two adjacent arch segment 1, the receiving plate 7 is arranged around the end face side wall of the arch segment 1, and the side of the receiving plate 7 facing the arc-shaped connecting pipe 4 is provided with a clamping groove 71 along the end face of the receiving plate 7, and the end of the arc-shaped connecting pipe 4 is clamped in the clamping groove 71. A driving assembly 5 is arranged between the two adjacent arch segment 1 for driving the arc-shaped connecting pipe 4 to slide on the arch segment 1.

[0039] The driving assembly 5 comprises an abutting rod 51 arranged at the end of the arch segment 1 fixedly connected with the receiving plate 7, the abutting rod 51 is arranged as an arc-shaped rod and the curvature of the abutting rod 51 is the same as that of the arch segment 1, one end of the abutting rod 51 is fixedly connected to the end of the end of the two adjacent arch segment 1 close to each other. The end of the arch segment 1 not fixedly connected with the abutting rod 51 among the two adjacent arch segment 1 is provided with a groove 11, cavities 12 are arranged in the side walls on both sides of the groove 11, a first sliding groove 13 is arranged on the outer side wall of the groove 11, the first sliding groove 13 is arranged along the curvature direction of the arch segment 1 and communicates with the cavities 12. A driving plate 52 is slidably connected in the first sliding groove 13, and one end of the driving plate 52 is arranged outside the first sliding groove 13. A second sliding groove 14 is arranged on the inner side wall of the groove 11, the second sliding groove 14 is arranged along the curvature direction of the arch segment 1 and communicates with the cavities 12. A stress plate 53 is slidably connected in the second sliding groove 14, one end of the stress plate 53 is arranged in the groove 11, and the two stress plates 53 abut against the abutting rod 51 at the same time. A pulley 55 is arranged in the cavity 12, the pulley 55 is rotatably connected to the side wall in the cavity 12, and the axis of the pulley 55 is parallel to the axis of the arch segment 1. A connecting rope 54 is wound on the pulley 55, one end of the connecting rope 54 is fixedly connected to the stress plate 53, and the other end of the connecting rope 54 is fixedly connected to the driving plate 52.

[0040] When the two adjacent arch segments 1 are butted and the ends of the two adjacent arch segments 1 are rotated towards each other, the abutting rod 51 on one of the arch segments 1 can move towards the groove bottom of the groove 11 at the end of the other arch segment 1, then the abutting rod 51 abuts against the two force plates 53, and the two force plates 53 move along the second sliding groove 14 towards the groove bottom side of the groove 11, then under the action of the connecting rope 54, the pulley 55 starts to rotate and drives the arc-shaped connecting pipe 4 to move towards the receiving plate 7 side with the driving plate 52, and finally when the ends of the two arch segments 1 completely abut, the end of the arc-shaped connecting pipe 4 is clamped into the clamping groove 71 of the receiving plate 7.

[0041] With reference to Figure 1 and Figure 6 In order to improve the stability of the arc-shaped connecting pipe 4 when it is driven by the driving plate 52 to move on the arch segment 1, a limiting groove 521 is provided on the side of the driving plate 52 facing the end of the arc-shaped connecting pipe 4, and the end of the arc-shaped connecting pipe 4 is fixedly connected in the limiting groove 521.

[0042] In order to improve the stability of the arc-shaped connecting pipe 4 at the butt joint of the two adjacent arch segments 1, a locking assembly 6 is provided on the arc-shaped connecting pipe 4 for fixing the arc-shaped connecting pipe 4 at the butt joint of the two adjacent arch segments 1.

[0043] The locking assembly 6 includes a plurality of locking screws 61 which are threadedly connected to the arc-shaped connecting pipe 4, and in the drawings, the locking screws 61 are provided in four, two on each end of the arc-shaped connecting pipe 4, the rod portions of the locking screws 61 pass through the side walls of the arc-shaped connecting pipe 4 and are placed in the arch segments 1, and the locking screws 61 are threadedly connected with the arch segments 1.

[0044] The implementation principle of the embodiment is as follows: during erection, the mounting rings 2 between the two adjacent arch segments 1 are preliminarily positioned by the insertion rods 22 and the insertion holes 21, then the rotating columns 3 are inserted into the four coaxially arranged mounting rings 2, and the fixing nuts 31 are threadedly connected to the two ends of the rotating columns 3, thereby fixing the positions of the mounting rings 2 on the rotating columns 3, then the arch segments 1 in the middle of the entire arch are jacked up to the top of the tunnel, then the arch segments 1 on both sides of the arch segments 1 in the middle of the entire arch are rotated towards the inner wall of the upper end of the tunnel, thereby the abutting rod 51 abuts against the force plate 53, then under the action of the connecting rope 54 and the pulley 55, the driving plate 52 drives the arc-shaped connecting pipe 4 to move to the butt joint of the two arch segments 1, and finally the end of the arc-shaped connecting pipe 4 is inserted into the clamping groove 71, then a plurality of locking screws 61 are screwed into the outer wall of the arc-shaped connecting pipe 4, thereby fixing the two arch segments 1.

[0045] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same parts are denoted by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A large-section tunnel arch support structure, comprising multiple arch segments (1), characterized in that, Two mounting rings (2) are fixed to the ends of two adjacent arch frame segments (1) that are close to each other. The mounting rings (2) are located on both sides of the end of the arch frame segment (1), and the two mounting rings (2) are located on the side of the inner arc surface of the arch frame segment (1). A rotating column (3) is provided between two adjacent arch frame segments (1) for connecting the mounting rings (2). The rotating column (3) passes through the mounting ring (2) and is coaxially arranged and rotatably connected to the mounting ring (2). The rotating column (3) is provided with a function to limit the mounting ring (2) from rotating. The fixed part on the moving column (3) is provided with an arc-shaped connecting pipe (4) between two adjacent arch frame segments (1) for fixing the two arch frame segments (1). The arc-shaped connecting pipe (4) is slidably connected to the arch frame segment (1), and a driving assembly (5) is provided between two adjacent arch frame segments (1) for driving the arc-shaped connecting pipe (4) to slide on the arch frame segment (1). The arc-shaped connecting pipe (4) is provided with a locking assembly (6) for fixing the arc-shaped connecting pipe (4) at the connection of two adjacent arch frame segments (1). The driving assembly ( 5) Includes an abutment rod (51) disposed between two adjacent arch frame segments (1), the abutment rod (51) being fixed to the end of one of the arch frame segments (1), the arc-shaped connecting pipe (4) being slidably connected to the other arch frame segment (1), the end of the arch frame segment (1) slidably connected to the arc-shaped connecting pipe (4) having a groove (11), a cavity (12) being formed in the side wall of the groove (11), a pulley (55) being rotatably connected in the cavity (12), a connecting rope (54) being sleeved on the pulley (55), the arch frame segment A first groove (13) is provided on the outer wall of the segment (1), and a second groove (14) is provided on the inner wall of the groove (11). One end of the connecting rope (54) is located at the first groove (13) and is fixedly connected to a drive plate (52). The drive plate (52) is slidably connected in the first groove (13). The drive plate (52) abuts against the end of the arc-shaped connecting pipe (4). The other end of the connecting rope (54) is placed at the second groove (14) and is fixedly connected to a force plate (53). The force plate (53) is slidably connected in the second groove (14).

2. The large-section tunnel arch support structure according to claim 1, characterized in that, The fixing component is a fixing nut (31), which is located at both ends of the rotating column (3) and threadedly connected to the rotating column (3).

3. The large-section tunnel arch support structure according to claim 1, characterized in that, The abutment rod (51) is configured as an arc-shaped rod and the arc of the abutment rod (51) is the same as the arc of the arch frame segment (1).

4. The large-section tunnel arch support structure according to claim 3, characterized in that, A receiving plate (7) for limiting the arc-shaped connecting pipe (4) on the outer wall of the end of the arch frame segment (1) is fixedly connected. The receiving plate (7) has a snap-fit ​​groove (71) for snapping the end of the arc-shaped connecting pipe (4) on the side facing the arc-shaped connecting pipe (4).

5. The large-section tunnel arch support structure according to claim 4, characterized in that, A limiting groove (521) is provided on the drive plate (52), and the end of the arc-shaped connecting pipe (4) is fixed to the bottom of the limiting groove (521).

6. The large-section tunnel arch support structure according to claim 1, characterized in that, The locking assembly (6) is provided with multiple locking screws (61). Multiple threaded holes are provided on the outer wall of the arc-shaped connecting pipe (4) and on the end sidewalls of the two arch frame segments (1) that are close to each other. The threaded holes on the arc-shaped connecting pipe (4) and the arch frame segments (1) correspond one-to-one and are coaxially arranged.

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