Tunnel waterproof structure

Abstract

The utility model relates to the related technical field of tunnel waterproof construction, in particular to a tunnel waterproof structure which comprises a pavement slab base layer, an asphalt pavement and an anti-collision wall, the asphalt pavement is arranged above the pavement slab base layer, and the anti-collision wall is arranged on the side edge of the asphalt pavement. A polyurethane isolating strip is pasted in an expansion joint groove of the pavement slab base layer, a waterproof remolding layer is arranged above the polyurethane isolating strip, a base surface waterproof reinforcing layer is arranged on the surface of the waterproof remolding layer, and a waterproof protective layer is painted on the upper surface of the base surface waterproof reinforcing layer. An asphalt facing is laid on the upper surface of the waterproof protection layer, high-strength anti-corrosion mortar is arranged in a structural joint of the anti-collision wall, then rapid leaking stoppage gel is grouted, and then high-elastic structural adhesive is used for blocking. According to the tunnel waterproof structure, waterproof sealing can be well conducted on the pavement expansion joints, the structure is isolated from water immersion, meanwhile, the connecting elasticity between the structural joints is recovered, and the cracking risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field related to tunnel waterproof construction, in particular to a tunnel waterproof structure. Background Art

[0002] At present, in the expansion joints of tunnels, when the waterproof sealing and waterproof layer of the road slab structural joints have been constructed, the surface is horizontal cracking of the road surface. When rainwater or water used for manual tunnel cleaning or road surface cleaning is generated in the tunnel, it will cause water to flow on the road surface and leak to the lower layer;

[0003] At the same time, the sealing materials of the structural joints of the crash wall adjacent to the road surface are aging and damaged. The structural joints and drainage ditches cause the road surface to crack. When there is water on the road surface, it leaks to the lower layer. The grouting foam materials in the cracks are aging, absorbing and storing water, and have no sealing effect. It is not conducive to the drainage of water, which aggravates the leakage.

[0004] Due to water leakage in the upper level, drainage channels were installed on the top of the lower tunnel to repair the cracks and stop the leaks, which damaged the fire-retardant coating layer. Utility Model Content

[0005] The purpose of the utility model is to provide a tunnel waterproof structure. In order to overcome the problem that cracks occur in the Shangzhong Road Tunnel in the technical background, and the existing crack repair method is not conducive to drainage, and at the same time, water leakage in the upper layer will affect the lower tunnel structure, the utility model proposes a tunnel waterproof structure to alleviate the above-mentioned problems.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a tunnel waterproof structure, including a road panel base, an asphalt pavement and a crash barrier, an asphalt pavement is arranged above the road panel base, a crash barrier is arranged on the side of the asphalt pavement, a polyurethane isolation strip is pasted in the crack groove of the road panel base, a waterproof remodeling layer is arranged above the polyurethane isolation strip, a base waterproof reinforcement layer is arranged on the surface of the waterproof remodeling layer, a waterproof protective layer is painted on the surface above the base waterproof reinforcement layer, and an asphalt finish is laid on the surface above the waterproof protective layer. High-strength anti-corrosion mortar is arranged in the structural seam of the crash barrier, and then rapid plugging gel is grouted, and then sealed with high-elastic structural glue.

[0007] Preferably, the crash barrier and the asphalt pavement are both arranged above the road panel base layer, and the cracks of the road panel base layer, the asphalt pavement and the crash barrier are all chiseled and polished with regular grooves.

[0008] Preferably, the waterproof remodeling layer includes an interface agent layer, a high elastic structural adhesive layer, and a high strength anticorrosive mortar, the upper surface of the polyurethane isolation strip is coated with an interface agent layer, and a high elastic structural adhesive layer is arranged on the surface of the interface agent layer. High strength anticorrosive mortar is arranged in the structural seam of the anti-collision wall.

[0009] Preferably, the expansion area of the interface agent layer is 0.5 kg / ㎡, and the interface agent layer extends to 20 cm from the surface of the asphalt pavement.

[0010] Preferably, the base surface waterproof reinforcement layer is ZNJC high-durable waterproof sealing tape and quick leak-proof gel, and the width of ZNJC high-durable waterproof sealing tape is 5 to 10 cm and the thickness is 2 mm.

[0011] Preferably, the waterproof protective layer includes an elastic polyurea waterproof coating layer and a high-elastic structural adhesive layer. The surface of the base waterproof reinforcement layer is coated with an elastic polyurea waterproof coating layer with a thickness of 1 to 2 mm, and a high-elastic structural adhesive is applied in the structural seam of the anti-collision wall.

[0012] Preferably, the upper surface of the elastic polyurea waterproof coating layer is paved with an asphalt finish, and the height of the asphalt finish is flush with the height of the asphalt pavement.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By adding a polyurethane isolation strip at the bottom of the crack, the base layer can be sealed and strengthened, providing a stable interface for subsequent processes. At the same time, polyurethane has strong weather resistance, high tensile and compressive strength, and good durability.

[0015] 2. High-elastic structural adhesive adopts high viscosity, high elasticity, low modulus, elastic recovery of more than 500%, high weather resistance, mildew-proof and environmentally friendly, weather-resistant for 25 years, can effectively seal the gap, and can resist the vibration of the tunnel pavement;

[0016] 3. The waterproof layer is made of high-elasticity and high-strength waterproof material, which has excellent elasticity, anti-cracking and waterproof effects. On the basis of the waterproof effect, it can also resist the risk of cracking caused by road vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the crack repair structure of the road slab base and crash wall of the utility model tunnel waterproof structure;

[0018] Figure 2 This is a schematic diagram of the utility model tunnel waterproof structure road slab base and asphalt pavement crack repair structure;

[0019] Figure 3 This is a schematic diagram of the waterproof remodeling layer structure of the utility model tunnel waterproof structure;

[0020] Figure 4 It is a schematic diagram of the waterproof protective layer structure of the tunnel waterproof structure of the utility model.

[0021] In the figure: 1, road panel base course; 2, asphalt pavement; 3, anti-collision wall; 4, polyurethane isolation strip; 5, waterproof remodeling layer; 501, primer layer; 502, high-elastic structural adhesive layer; 503, high-strength anti-corrosion mortar; 6, base surface waterproof reinforcement layer; 601, highly durable waterproof sealing tape; 602, quick leak-stopping gel; 7, waterproof protection layer; 701, elastic polyurea waterproof coating layer; 702, high-elastic structural adhesive layer; 8, asphalt finish. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] A tunnel waterproof structure disclosed in this embodiment is as Figures 1-4 , including a road panel base course 1, an asphalt pavement 2 and an anti-collision wall 3. An asphalt pavement 2 is arranged above the road panel base course 1, and an anti-collision wall 3 is arranged on the side of the asphalt pavement 2. A polyurethane isolation strip 4 is pasted in the crack groove of the road panel base course 1. A waterproof remodeling layer 5 is arranged above the polyurethane isolation strip 4. A base surface waterproof reinforcement layer 6 is arranged on the surface of the waterproof remodeling layer 5. A waterproof protection layer 7 is painted on the upper surface of the base surface waterproof reinforcement layer 6. An asphalt finish 8 is laid on the upper surface of the waterproof protection layer 7.

[0024] Furthermore, both the anti-collision wall 3 and the asphalt pavement 2 are arranged above the road panel base course. Regular grooves are chiseled and polished at the cracks of the road panel base course 1, the asphalt pavement 2 and the anti-collision wall 3. By re-chiseling regular grooves at the cracks of the road panel base course 1, the asphalt pavement 2 and the anti-collision wall 3, it is convenient for the subsequent waterproof operation.

[0025] Furthermore, the waterproof remodeling layer 5 includes a primer layer 501, a high-elastic structural adhesive layer 502 and a high-strength anti-corrosion mortar layer 503. The primer layer 501 is painted on the upper surface of the polyurethane isolation strip 4. The high-elastic structural adhesive layer 502 is arranged on the surface of the primer layer 501. High-strength anti-corrosion mortar 503 is arranged in the anti-collision wall structure joint. Through the arrangement of the polyurethane isolation strip 4 and the waterproof remodeling layer 5, first, the polyurethane isolation strip 4 has strong polyurethane weather resistance, high tensile and compressive strength, and can play a role in sealing and strengthening the base course, providing a stable interface for the subsequent process. Secondly, the primer layer 501 selects ZNJC primer, the high-elastic structural adhesive layer 503 uses ZNJC high-elastic structural adhesive, and the high-strength anti-corrosion mortar layer uses ZNJC high-strength anti-corrosion mortar.

[0026] Furthermore, the unfolded area of the interface agent layer 501 is 0.5 kg / ㎡, and the interface agent layer 501 extends to 20 cm from the surface of the asphalt pavement 2. Through the setting of the interface agent layer 501, the coating can be given good adhesion, and the cured coating has good anti-corrosion performance, hardness, toughness and density.

[0027] Furthermore, the base waterproof reinforcement layer 6 is a ZNJC high-durability waterproof sealing tape with a width of 5 to 8 cm and a thickness of 2 mm. A quick leak-proof gel is injected into the inner side of the high-strength anti-corrosion mortar that has been sealed in the crash wall. Through the setting of the base waterproof reinforcement layer 6, the entire waterproof reshaping layer 5 can be waterproofed and reinforced.

[0028] Furthermore, the waterproof protective layer 7 includes an elastic polyurea waterproof coating layer 701 and a high-elastic structural adhesive layer 702. The surface of the base waterproof reinforcement layer 6 is coated with an elastic polyurea waterproof coating 701, and the high-elastic structural adhesive 702 is applied in the structural seam of the crash wall, wherein the polyurea waterproof coating layer 701 uses ZNJC polyurea waterproof coating, and the high-elastic structural adhesive layer 702 uses ZNJC high-elastic structural adhesive. The waterproof protective layer 7 can further enhance the compactness of the finishing structure, isolate the structural seam from water infiltration, and at the same time protect the waterproof reshaping layer 5, thereby increasing the waterproof time after the cracks are repaired.

[0029] Furthermore, the thickness of the elastic polyurea waterproof coating layer 701 is 1-2 mm, and it has excellent elastic crack resistance and waterproof effects. On the basis of the waterproof effect, it can also resist the risk of cracking caused by road vibration.

[0030] Furthermore, the upper surface of the elastic polyurea waterproof coating layer 701 is paved with an asphalt finish 8 , and the height of the asphalt finish 8 is flush with the height of the asphalt pavement 2 .

[0031] Working principle: First, the cracks of the asphalt pavement 2 and the crash barrier 3 are excavated until the road panel base layer 1 is treated in the same way to open regular grooves, and then a layer of polyurethane isolation strip 4 is pasted in the crack grooves, and then a layer of interface agent layer 501 is applied on the surface of the polyurethane isolation strip 4, and then a high-elastic structural adhesive layer 502 is used on the surface of the interface agent layer 501 for waterproof sealing, and a high-strength anti-corrosion mortar 503 is used in the structural joints of the crash wall, and then the base surface waterproof reinforcement layer 6 is laid, and then the surface is polished, and then an elastic polyurea waterproof coating 701 is applied, and a high-elastic structural adhesive layer 702 is used for the structural joints, and finally an asphalt finish 8 is laid on top of the elastic polyurea waterproof coating layer 701 to complete the crack waterproof repair.

[0032] Obviously, the above embodiments are only examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the creation of the present utility model.

Claims

1. A tunnel waterproof structure, comprising a road slab base (1), an asphalt pavement (2) and a crash barrier (3), characterized in that: Above the road panel base layer (1), there is an asphalt pavement (2). On the side of the asphalt pavement (2), there is a crash barrier (3). In the expansion joint groove of the road panel base layer (1), a polyurethane isolation strip (4) is pasted. Above the polyurethane isolation strip (4), there is a waterproof remodeling layer (5). On the surface of the waterproof remodeling layer (5), there is a base surface waterproof reinforcement layer (6). On the upper surface of the base surface waterproof reinforcement layer (6), a waterproof protective layer (7) is painted. On the upper surface of the waterproof protective layer (7), an asphalt finish (8) is laid.

2. The waterproof structure for a tunnel according to claim 1, wherein: Both the crash barrier (3) and the asphalt pavement (2) are arranged above the road panel base layer. Regular grooves are chiseled and polished at the cracks of the road panel base layer (1), the asphalt pavement (2), and the crash barrier (3).

3. The waterproof structure for a tunnel according to claim 1, wherein: The waterproof remodeling layer (5) includes an interface agent layer (501), a high-elastic structural adhesive layer (502), and a high-strength anti-corrosion mortar (503). The interface agent layer (501) is painted on the upper surface of the polyurethane isolation strip (4). The surface of the interface agent layer (501) is provided with a high-elastic structural adhesive. The high-strength anti-corrosion mortar (503) is arranged in the structural joint of the crash barrier (3).

4. A tunnel waterproof structure according to claim 3, characterized in that: The spreading area of the interface agent layer (501) is 0.5 kg / ㎡, and the interface agent layer (501) extends to 20 cm of the surface layer of the asphalt pavement (2).

5. The tunnel waterproof structure according to claim 1, characterized in that: The base surface waterproof reinforcement layer (6) is a ZNJC high-durability waterproof sealing tape (601) and a quick plugging gel (602). The width of the ZNJC high-durability waterproof sealing tape (601) is 5 - 10 cm, and the thickness is 2 mm. The quick plugging gel is injected inside the high-strength anti-corrosion mortar that has been blocked in the crash barrier.

6. The waterproof structure for a tunnel according to claim 1, wherein: The waterproof protective layer (7) includes an elastic polyurea waterproof coating layer (701) and a high-elastic structural adhesive. The elastic polyurea waterproof coating is applied to the surface of the base surface waterproof reinforcement layer (6), and the structural joint of the crash barrier is waterproof sealed with the high-elastic structural adhesive.

7. A tunnel waterproof structure according to claim 6, characterized in that: The thickness of the elastic polyurea waterproof coating layer (701) is 1 - 2 mm.

8. A tunnel waterproof structure according to claim 6, characterized in that: The asphalt finish (8) is laid on the upper surface of the elastic polyurea waterproof coating layer (701), and the height of the asphalt finish (8) is flush with the height of the asphalt pavement (2).

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