Tunnel open cut tunnel arch wall deformation joint waterproof structure

Abstract

The utility model relates to the technical field of tunnel open cut tunnel arch wall construction, and discloses a tunnel open cut tunnel arch wall deformation joint waterproof structure which comprises an open cut tunnel arch wall pre-pouring section, an open cut tunnel arch wall post-pouring section and waterproof layers arranged on the surfaces of the open cut tunnel arch wall pre-pouring section and the open cut tunnel arch wall post-pouring section. A deformation joint is formed between the open cut tunnel arch wall pre-pouring section and the open cut tunnel arch wall post-pouring section, the deformation joint is sequentially provided with a sealing layer, a galvanized steel plate water receiving box and a joint filling layer from inside to outside, and a back-attached rubber water stop belt is arranged at the position, corresponding to the deformation joint, of the waterproof layer. According to the tunnel open cut tunnel arch wall deformation joint waterproof structure, the sealing layer, the joint filling layer, the middle-buried type water stop belt, the back-attached type rubber water stop belt and the waterproof layer are arranged, the sealing layer and the joint filling layer block the deformation joint, and water is blocked on the outer side of an arch wall through multiple waterproof measures of the middle-buried type water stop belt, the back-attached type rubber water stop belt and the waterproof layer; the waterproof structure at the deformation joint position is improved, and the safety and durability of the open cut tunnel arch wall structure are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel open hole arch wall construction, in particular to a tunnel open hole arch wall deformation joint waterproof structure. Background Art

[0002] When high-speed railways are laid in mountainous areas or sensitive urban areas, they have to pass through shallow buried strata due to the influence of the terrain and existing ground buildings. When setting up tunnels in shallow buried strata, in order to ensure the safety of tunnel construction and reduce the impact of construction on the surrounding environment, it is usually necessary to adopt an open hole structure.

[0003] The expansion joints of open-cut arch walls are weak spots where cracks occur and are prone to water leakage, which not only directly affects driving safety, but also reduces the working efficiency of tunnel ventilation and lighting systems, induces rust of operating facilities, affects the durability of tunnel structures, and endangers driving safety. Therefore, it is necessary to strengthen the waterproof structural design of expansion joints of open-cut arch walls. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a waterproof structure for deformation joints of an open-cut tunnel arch wall, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solutions: a waterproof structure for deformation joints of open-cut arch walls of tunnels, comprising: an open-cut arch wall first-cast section, an open-cut arch wall later-cast section and a waterproof layer, wherein the waterproof layer is arranged on the surfaces of the open-cut arch wall first-cast section and the open-cut arch wall later-cast section, a deformation joint is formed between the open-cut arch wall first-cast section and the open-cut arch wall later-cast section, the deformation joint is sequentially provided with a sealing layer, a galvanized steel plate water receiving box and a caulking layer from the inside to the outside, and a back-sticking rubber waterstop is arranged on the waterproof layer at a position corresponding to the deformation joint, and the back-sticking rubber waterstop is connected to the surfaces of the open-cut arch wall first-cast section and the open-cut arch wall later-cast section.

[0006] Preferably, the waterproof layer includes a waterproof coating layer, a mortar leveling layer, a waterproof board, a fine stone concrete protective layer and a soil and stone layer. The waterproof coating layer is arranged on the surface of the first cast section of the open hole arch wall and the later cast section of the open hole arch wall. The mortar leveling layer is arranged on the surface of the waterproof coating layer. The waterproof board is connected to the surface of the mortar leveling layer. The fine stone concrete protective layer is connected to the surface of the waterproof board. The soil and stone layer is connected to the surface of the fine stone concrete protective layer.

[0007] Preferably, the sealing layer is made of polysulfide sealant, and the filling thickness of the sealing layer in the deformation joint is 3 cm.

[0008] Preferably, the galvanized steel plate water collecting box is connected to the surface of the sealing layer, and the width of the galvanized steel plate water collecting box is 2 cm, and the bottom end of the galvanized steel plate water collecting box extends to the bottom of the first cast section of the open hole arch wall and the later cast section of the open hole arch wall.

[0009] Preferably, the caulking layer is made of waterproof sealant.

[0010] Preferably, an embedded waterstop is provided in the caulking layer.

[0011] Preferably, the embedded waterstop is a embedded self-adhesive rubber waterstop, the width of the embedded waterstop is 400 mm, the thickness of the embedded waterstop is 10 mm, and both sides of the embedded waterstop extend to the interior of the first cast section of the open hole arch wall and the later cast section of the open hole arch wall respectively.

[0012] Preferably, the width midline of the back-stick rubber waterstop is aligned with the width midline of the deformation joint, the width of the back-stick rubber waterstop is 400 mm, the thickness of the back-stick rubber waterstop is 10 mm, and the convex height of the back-stick rubber waterstop is 40 mm.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The expansion joint waterproof structure of the open-cut arch wall of the tunnel is equipped with a sealing layer, a caulking layer, an embedded waterstop, a back-attached rubber waterstop and a waterproof layer. The sealing layer and the caulking layer are used to seal the expansion joint, and the embedded waterstop, the back-attached rubber waterstop and the waterproof layer are used as multiple waterproof measures to block water on the outside of the arch wall, thereby improving the waterproof structure at the expansion joint position and ensuring the safety and durability of the open-cut arch wall structure.

[0015] 2. The waterproof structure of the expansion joint of the open-cut arch wall of the tunnel is equipped with a galvanized steel plate water collection box, which guides the leaking water from the open-cut arch wall to the bottom of the tunnel to prevent it from dripping into the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a partial enlarged structural schematic diagram of the side section of the waterproof layer of the utility model.

[0018] In the figure: 1. The first poured section of the open hole arch wall; 2. The last poured section of the open hole arch wall; 3. The embedded waterstop; 4. The caulking layer; 5. The galvanized steel plate water collection box; 6. The sealing layer; 7. The back-sticked rubber waterstop; 8. The waterproof coating layer; 9. The mortar leveling layer; 10. The waterproof board; 11. The fine stone concrete protective layer; 12. The soil and stone layer; 13. The expansion joint; 14. The waterproof layer. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-2 A tunnel open hole arch wall deformation joint waterproof structure, comprising: an open hole arch wall first cast section 1, an open hole arch wall post cast section 2 and a waterproof layer 14, the waterproof layer 14 is arranged on the surface of the open hole arch wall first cast section 1 and the open hole arch wall post cast section 2, a deformation joint 13 is formed between the open hole arch wall first cast section 1 and the open hole arch wall post cast section 2, the deformation joint 13 is sequentially provided with a sealing layer 6, a galvanized steel plate water receiving box 5 and a caulking layer 4 from the inside to the outside, and a back-sticking rubber waterstop 7 is arranged on the waterproof layer 14 at a position corresponding to the deformation joint 13, and the back-sticking rubber waterstop 7 is connected to the surface of the open hole arch wall first cast section 1 and the open hole arch wall post cast section 2.

[0021] See also Figure 2 The waterproof layer 14 includes a waterproof coating layer 8, a mortar leveling layer 9, a waterproof board 10, a fine stone concrete protective layer 11 and a soil and stone layer 12. The waterproof coating layer 8 is arranged on the surface of the open hole arch wall first pouring section 1 and the open hole arch wall post pouring section 2, the mortar leveling layer 9 is arranged on the surface of the waterproof coating layer 8, the waterproof board 10 is connected to the surface of the mortar leveling layer 9, the fine stone concrete protective layer 11 is connected to the surface of the waterproof board 10, and the soil and stone layer 12 is connected to the surface of the fine stone concrete protective layer 11.

[0022] The galvanized steel plate water collecting box 5 is connected to the surface of the sealing layer 6, and the width of the galvanized steel plate water collecting box 5 is 2 cm. The bottom end of the galvanized steel plate water collecting box 5 extends to the bottom of the first cast section 1 of the open hole arch wall and the later cast section 2 of the open hole arch wall. The galvanized steel plate water collecting box 5 leads the leakage water from the open hole arch wall to the bottom of the tunnel to prevent it from dripping into the tunnel.

[0023] The sealing layer 6 is filled with polysulfide sealant, and the filling thickness of the sealing layer 6 in the deformation joint 13 is 3 cm. The polysulfide sealant has excellent properties such as oil resistance and weather resistance, and has a good bonding effect with concrete. The caulking layer 4 is filled with waterproof sealant.

[0024] An embedded waterstop 3 is arranged in the caulking layer 4. The embedded waterstop 3 is an embedded self-adhesive rubber waterstop. The width of the embedded waterstop 3 is 400 mm, and the thickness of the embedded waterstop 3 is 10 mm. Both sides of the embedded waterstop 3 extend to the interior of the first cast section 1 of the open hole arch wall and the later cast section 2 of the open hole arch wall respectively.

[0025] The width midline of the back-sticking rubber waterstop 7 is aligned with the width midline of the deformation joint 13, the width of the back-sticking rubber waterstop 7 is 400 mm, the thickness of the back-sticking rubber waterstop 7 is 10 mm, and the convex height of the back-sticking rubber waterstop 7 is 40 mm.

[0026] The sealing layer 6 and the caulking layer 4 seal the deformation joint 13. The multiple waterproof measures of the buried waterstop 3, the back-sticked rubber waterstop 7 and the waterproof layer 14 block the water outside the arch wall, improve the waterproof structure at the deformation joint 13, and ensure the safety and durability of the open hole arch wall structure. The galvanized steel plate water collection box 5 leads the leaking water from the open hole arch wall to the bottom of the tunnel to prevent it from dripping into the tunnel.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof structure for deformation joints of open-cut tunnel arch walls, characterized in that: include: An open hole arch wall first cast section (1), an open hole arch wall post cast section (2) and a waterproof layer (14), wherein the waterproof layer (14) is arranged on the surface of the open hole arch wall first cast section (1) and the open hole arch wall post cast section (2), a deformation joint (13) is formed between the open hole arch wall first cast section (1) and the open hole arch wall post cast section (2), the deformation joint (13) is provided with a sealing layer (6), a galvanized steel plate water receiving box (5) and a caulking layer (4) in sequence from the inside to the outside, and a back-sticking rubber water stop strip (7) is arranged on the waterproof layer (14) at a position corresponding to the deformation joint (13), and the back-sticking rubber water stop strip (7) is connected to the surface of the open hole arch wall first cast section (1) and the open hole arch wall post cast section (2).

2. The waterproof structure of tunnel open arch wall deformation joint according to claim 1 is characterized in that: The waterproof layer (14) comprises a waterproof coating layer (8), a mortar leveling layer (9), a waterproof board (10), a fine stone concrete protective layer (11) and a soil and stone layer (12); the waterproof coating layer (8) is arranged on the surface of the open hole arch wall first pouring section (1) and the open hole arch wall later pouring section (2); the mortar leveling layer (9) is arranged on the surface of the waterproof coating layer (8); the waterproof board (10) is connected to the surface of the mortar leveling layer (9); the fine stone concrete protective layer (11) is connected to the surface of the waterproof board (10); and the soil and stone layer (12) is connected to the surface of the fine stone concrete protective layer (11).

3. The waterproof structure of tunnel open-hole arch wall deformation joint according to claim 1 is characterized in that: The sealing layer (6) is made of polysulfide sealant, and the filling thickness of the sealing layer (6) in the deformation joint (13) is 3 cm.

4. The waterproof structure of tunnel open arch wall deformation joint according to claim 1 is characterized in that: The galvanized steel plate water receiving box (5) is connected to the surface of the sealing layer (6), and the width of the galvanized steel plate water receiving box (5) is 2 cm. The bottom end of the galvanized steel plate water receiving box (5) extends to the bottom of the open hole arch wall first pouring section (1) and the open hole arch wall later pouring section (2).

5. The waterproof structure of tunnel open-hole arch wall deformation joint according to claim 1 is characterized in that: The caulking layer (4) is made of waterproof sealant.

6. The waterproof structure of tunnel open-hole arch wall deformation joint according to claim 5 is characterized in that: An embedded water stop strip (3) is provided in the caulking layer (4).

7. The waterproof structure of tunnel open-hole arch wall deformation joint according to claim 6 is characterized in that: The embedded waterstop (3) is an embedded self-adhesive rubber waterstop, the width of the embedded waterstop (3) is 400 mm, the thickness of the embedded waterstop (3) is 10 mm, and the two sides of the embedded waterstop (3) extend to the interior of the open hole arch wall first cast section (1) and the open hole arch wall later cast section (2), respectively.

8. The waterproof structure of tunnel open arch wall deformation joint according to claim 1 is characterized in that: The width midline of the back-stick rubber waterstop (7) is aligned with the width midline of the deformation joint (13), the width of the back-stick rubber waterstop (7) is 400 mm, the thickness of the back-stick rubber waterstop (7) is 10 mm, and the convex height of the back-stick rubber waterstop (7) is 40 mm.

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