Tunnel supporting structure

Abstract

The utility model relates to the field of tunnel construction, and provides a tunnel supporting structure which comprises arc-shaped concrete plates, vertical concrete plates are installed at the bottoms of the arc-shaped concrete plates, upper arc-shaped blocks are installed on the inner sides of the two arc-shaped concrete plates, and lower arc-shaped blocks are installed on the inner sides of the arc-shaped concrete plates and the vertical concrete plates. An inserting rod is installed in the middle of each arc-shaped concrete plate, a fixing ring is arranged on the outer side of the circumference of each inserting rod, a fixing plate is installed at the bottom of each vertical concrete plate, and a fixing rod is installed in the middle of each fixing plate. The lower arc-shaped blocks are installed on the inner sides of the arc-shaped concrete plates and the vertical concrete plates, force can be dispersed through the shapes of the upper arc-shaped blocks and the shapes of the lower arc-shaped blocks, the force of the supporting structure is dispersed to the whole structure, powerful supporting can be formed for surrounding rock, and therefore the safety of tunnel construction is improved.

Description

Technical Field

[0001] The utility model belongs to the field of tunnel construction and relates to a tunnel supporting structure. Background Art

[0002] As a conventional railway tunnel construction method, it is simply to carry out initial support, and use secondary lining as the tunnel support structure. The initial support consists of a single layer of sprayed concrete, system anchors and built-in steel frames, which is a flexible support method.

[0003] When encountering poor geological conditions, the initial support pole is prone to deformation and cracking due to increased local pressure, which is likely to cause strong settlement of the surrounding rock and even rock collapse in severe cases. Therefore, it is necessary to transform the existing support structure to reduce the possibility of surrounding rock settlement and thus improve the safety of tunnel construction. Utility Model Content

[0004] The purpose of the utility model is to provide a tunnel support structure, which solves the problem that when encountering poor geological conditions, the initial support pole is prone to deformation and cracking due to increased local pressure, which is likely to cause strong settlement of the surrounding rock and may even cause rock collapse in severe cases. Therefore, it is necessary to transform the existing support structure to reduce the possibility of surrounding rock settlement, thereby improving the safety of tunnel construction.

[0005] The technical solution of the utility model is achieved as follows: it includes an arc-shaped concrete slab, a vertical concrete slab is installed at the bottom of the arc-shaped concrete slab, an upper arc-shaped block is installed on the inner side of the two arc-shaped concrete slabs, a lower arc-shaped block is installed on the inner side of the arc-shaped concrete slab and the vertical concrete slab, an insertion rod is installed in the middle of the arc-shaped concrete slab, a fixing ring is arranged on the outer side of the circumference of the insertion rod, a fixing plate is installed at the bottom of the vertical concrete slab, a fixing rod is installed in the middle of the fixing plate, steel bars are installed on the inner side of the concrete layer of the arc-shaped concrete slab and the vertical concrete slab, the steel bars are crisscrossed, the upper arc-shaped block and the lower arc-shaped block are respectively made of stainless steel materials, and the interior is a hollow structure, and the insertion rod is made of stainless steel materials.

[0006] As a preferred solution of the utility model, a curved steel plate is fixedly installed on the inner side of the curved concrete slab, a rough surface is provided on the outer side of the curved steel plate for connecting the concrete layer, and a steel bar is fixedly installed on the outer side of the curved steel plate.

[0007] As a preferred solution of the utility model, an upper insert block is installed between the two curved concrete slabs, the upper insert block is made of steel material, and a gap is provided between the two curved concrete slabs, so that the two curved concrete slabs can squeeze the upper insert block tightly.

[0008] As a preferred solution of the utility model, a lower insert block is installed between the curved concrete slab and the vertical concrete slab, the lower insert block is made of steel material, and a gap is provided between the curved concrete slab and the vertical concrete slab, so that the curved concrete slab and the vertical concrete slab can squeeze the lower insert block.

[0009] As a preferred solution of the utility model, a vertical steel plate is fixedly installed on the inner side of the vertical concrete slab, a rough surface is provided on the outer side of the force steel plate for connecting the concrete layer, and a steel bar is fixedly installed on the outer side of the force steel plate.

[0010] As a preferred solution of the utility model, a connecting block is fixedly installed on the upper inner side of the arc-shaped steel plate, and a rotating block is rotatably installed on the connecting block through a bolt group. Upper arc blocks are fixedly installed on the outer sides of the two rotating blocks, and the rotating block is fixedly installed on the two outer ends of the upper arc blocks by welding.

[0011] As a preferred solution of the utility model, two connecting blocks are respectively fixedly installed on the upper inner side of the vertical steel plate and the lower inner side of the arc-shaped steel plate. The two connecting blocks are rotatably installed with two rotating blocks through two bolt groups. Lower arc blocks are fixedly installed on the outer sides of the two rotating blocks. The two rotating blocks are fixedly installed on the two outer ends of the lower arc blocks by welding.

[0012] As a preferred solution of the utility model, a mounting block is fixedly installed in the middle of the inner side of the arc-shaped steel plate, a connecting rod is installed in the middle of the mounting block, an insert rod is fixedly installed on the outer side of the connecting rod, a locking block is arranged at the bottom of the connecting rod, and an external thread is arranged at the lower part of the outer side of the circumference of the connecting rod.

[0013] The tunnel support structure of the utility model has beneficial effects: the utility model has upper arc blocks installed on the inner sides of the two arc-shaped concrete slabs, and lower arc blocks installed on the inner sides of the arc-shaped concrete slabs and the vertical concrete slabs. The shapes of the upper arc blocks and the lower arc blocks can disperse the force, so that the force of the support structure is dispersed to the overall structure, which can form a strong support for the surrounding rock, thereby improving the safety of tunnel construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an overall structural diagram of an embodiment of the utility model;

[0015] Figure 2 This is a structural diagram of an upper arc block of an embodiment of the utility model;

[0016] Figure 3 This is a structural diagram of the lower arc block of an embodiment of the utility model;

[0017] Figure 4 This is a diagram of the rod structure of an embodiment of the utility model;

[0018] Figure 5 This is a structural diagram of a fixing rod according to an embodiment of the utility model;

[0019] In the figure: 1. curved concrete slab; 2. vertical concrete slab; 3. lower plug-in block; 4. upper plug-in block; 5. curved steel plate; 6. vertical steel plate; 7. fixing plate; 8. lower curved block; 9. upper curved block; 10. plug-in rod; 11. connecting block 1; 12. bolt group 1; 13. rotating block 1; 14. rotating block 2; 15. bolt group 2; 16. connecting block 2; 17. mounting block; 18. locking block; 19. fixing ring; 20. connecting rod; 21. fixing rod. DETAILED DESCRIPTION

[0020] like Figures 1 to 5 As shown, the utility model discloses a tunnel support structure, and the technical scheme adopted is, comprising an arc-shaped concrete slab 1, a vertical concrete slab 2 is installed at the bottom of the arc-shaped concrete slab 1, an upper arc-shaped block 9 is installed on the inner sides of the two arc-shaped concrete slabs 1, a lower arc-shaped block 8 is installed on the inner sides of the arc-shaped concrete slab 1 and the vertical concrete slab 2, an insertion rod 10 is installed in the middle of the arc-shaped concrete slab 1, a fixing ring 19 is arranged on the outer side of the circumference of the insertion rod 10, a fixing plate 7 is installed at the bottom of the vertical concrete slab 2, and a fixing rod 21 is installed in the middle of the fixing plate 7. The utility model installs an upper arc-shaped block 9 on the inner sides of the two arc-shaped concrete slabs 1, and a lower arc-shaped block 8 is installed on the inner sides of the arc-shaped concrete slab 1 and the vertical concrete slab 2. By utilizing the shapes of the upper arc-shaped block 9 and the lower arc-shaped block 8, the force of the support structure can be dispersed to the overall structure, and the surrounding rock can be effectively supported, thereby improving the safety of tunnel construction. The insertion rod 10 is inserted into the surrounding rock, and the fixing ring 19 increases the friction with the opening of the surrounding rock, thereby improving stability.

[0021] A curved steel plate 5 is fixedly installed on the inner side of the curved concrete slab 1 , and the curved steel plate 5 supports the concrete layer on the outer side of the curved concrete slab 1 .

[0022] An upper insert block 4 is installed between the two curved concrete slabs 1 . The upper insert block 4 can be inserted into the square openings on the upper portions of the two curved concrete slabs 1 to support the two curved concrete slabs 1 .

[0023] A lower insert block 3 is installed between the curved concrete slab 1 and the vertical concrete slab 2. The lower insert block 3 can be inserted into the square opening between the curved concrete slab 1 and the vertical concrete slab 2 to form support between the curved concrete slab 1 and the vertical concrete slab 2.

[0024] A vertical steel plate 6 is fixedly installed on the inner side of the vertical concrete slab 2 , and the vertical steel plate 6 supports the concrete layer on the outer side of the vertical concrete slab 2 .

[0025] A connecting block 11 is fixedly installed on the upper inner side of the arc-shaped steel plate 5, and a rotating block 13 is rotatably installed on the connecting block 11 through a bolt group 12. An upper arc block 9 is fixedly installed on the outer sides of the two rotating blocks 13, and the rotating block 13 is installed on the outer side of the connecting block 11, so that the upper arc block 9 supports the two arc concrete plates 1 and disperses the force.

[0026] A connecting block 2 16 is fixedly installed on the upper inner side of the vertical steel plate 6 and the lower inner side of the arc-shaped steel plate 5 respectively. The connecting block 16 is rotatably installed with a rotating block 14 through a bolt group 15. The lower arc block 8 is fixedly installed on the outer side of the two rotating blocks 14. The rotating block 14 slides on the outer side of the connecting block 2 16, so that the lower arc block 8 supports the arc-shaped concrete plate 1 and the vertical concrete plate 2 and disperses the force.

[0027] A mounting block 17 is fixedly installed in the middle of the inner side of the arc-shaped steel plate 5, a connecting rod 20 is installed in the middle of the mounting block 17, an insertion rod 10 is fixedly installed on the outer side of the connecting rod 20, and a locking block 18 is provided at the bottom of the connecting rod 20. The mounting block 17 is used to fix the connecting rod 20, and the insertion rod 10 is used to be inserted into the surrounding rock.

[0028] The working principle of this tunnel support structure: when the tunnel support structure is in use, the fixing plate 7 is pressed against the ground of the tunnel, the fixing rod 21 is inserted into the ground, the vertical concrete slab 2 is fixed to the bottom of the tunnel, the lower plug block 3 is installed in the opening of the vertical concrete slab 2, the curved concrete slab 1 is installed on the upper part of the vertical concrete slab 2, the upper plug block 4 is installed between the two curved concrete slabs 1, the bolt group 12 is used, the rotating block 13 is installed on the outside of the connecting block 11, so that the upper curved block 9 supports and disperses the force of the two curved concrete slabs 1, and the bolt group 2 15 is used, the rotating block 2 14 slides on the outside of the connecting block 2 16, so that the lower curved block 8 supports and disperses the force of the curved concrete slab 1 and the vertical concrete slab 2.

[0029] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the scope of protection of the present invention.

Claims

1. Tunnel support structure, characterized in that: The invention comprises a curved concrete slab (1), a vertical concrete slab (2) being installed at the bottom of the curved concrete slab (1), upper curved blocks (9) being installed on the inner sides of the two curved concrete slabs (1), lower curved blocks (8) being installed on the inner sides of the curved concrete slab (1) and the vertical concrete slab (2), an insertion rod (10) being installed in the middle of the curved concrete slab (1), a fixing ring (19) being provided on the outer side of the circumference of the insertion rod (10), a fixing plate (7) being installed at the bottom of the vertical concrete slab (2), and a fixing rod (21) being installed in the middle of the fixing plate (7).

2. The tunnel support structure according to claim 1, characterized in that: A curved steel plate (5) is fixedly mounted on the inner side of the curved concrete plate (1).

3. The tunnel support structure according to claim 1, characterized in that: An upper insert block (4) is installed between the two arc-shaped concrete slabs (1).

4. The tunnel support structure according to claim 1, characterized in that: A lower insert block (3) is installed between the curved concrete slab (1) and the vertical concrete slab (2).

5. The tunnel support structure according to claim 2, characterized in that: A vertical steel plate (6) is fixedly mounted on the inner side of the vertical concrete plate (2).

6. The tunnel support structure according to claim 2, characterized in that: A connecting block (11) is fixedly mounted on the upper inner portion of the arc-shaped steel plate (5); a rotating block (13) is rotatably mounted on the connecting block (11) via a bolt group (12); upper arc-shaped blocks (9) are fixedly mounted on the outer sides of the two rotating blocks (13).

7. The tunnel support structure according to claim 5, characterized in that: A second connecting block (16) is fixedly mounted on the upper inner part of the vertical steel plate (6) and the lower inner part of the arc-shaped steel plate (5), respectively. The second connecting block (16) is rotatably mounted with a second rotating block (14) via a second bolt group (15). A lower arc-shaped block (8) is fixedly mounted on the outer sides of the two rotating blocks (14).

8. The tunnel support structure according to claim 7, characterized in that: A mounting block (17) is fixedly mounted in the middle of the inner side of the arc-shaped steel plate (5), a connecting rod (20) is mounted in the middle of the mounting block (17), an inserting rod (10) is fixedly mounted on the outer side of the connecting rod (20), and a locking block (18) is arranged at the bottom of the connecting rod (20).

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