Waterproof structure for rail transit station
By installing embedded and external waterstops at the expansion joints of the structural side walls of rail transit stations, combined with drainage boxes, the problems of durability, drainage and deformation adaptability of waterproof structures were solved, achieving good waterproof effect and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING INVESTMENT CONSULTING CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-04-21
AI Technical Summary
The existing rail transit station structure has poor waterproofing performance at the expansion joints of the side walls. The waterstops are not durable enough, lack drainage capacity, and have poor deformation adaptability, resulting in serious water leakage problems.
The system combines embedded and external waterstops with drainage boxes to form a two-stage waterproof structure. Expansion joint lining provides cushioning and support, enhancing the waterproof capability.
It achieves excellent waterproof performance of the structural side wall expansion joints, can adapt to structural deformation, effectively prevent water leakage and drain accumulated water in a timely manner, thereby improving the safety and operating environment of the station.
Smart Images
Figure CN224148782U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waterproof structure technology, specifically to a waterproof structure for rail transit stations. Background Technology
[0002] With the rapid development of urban rail transit, the waterproofing problem of underground stations has become increasingly prominent, especially at the expansion joints of the structural side walls. Due to long-term exposure to groundwater pressure, structural deformation, and changes in ambient temperature, these areas are highly susceptible to leakage. Traditional waterproofing structures typically use a single waterstop (such as an embedded or externally applied waterstop) for sealing, but this method has the following problems in practical applications:
[0003] 1. Insufficient durability of waterstop: A single waterstop is prone to aging and cracking under long-term deformation or external force, leading to waterproofing failure;
[0004] 2. Inadequate drainage capacity: If the waterstop fails, the leaking water will directly enter the station interior. The lack of effective drainage measures will affect structural safety and the operating environment.
[0005] 3. Poor adaptability to deformation: When the expansion joint is displaced due to structural settlement or expansion, traditional waterproof structures are difficult to adapt and are prone to peeling or breakage. Utility Model Content
[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a waterproof structure for rail transit stations, so as to solve the problem of poor waterproof performance at the deformation joints of the side walls of the structure in the existing technology.
[0007] To achieve the above objectives, this utility model adopts the following technical solution: a waterproof structure for rail transit stations, installed within the expansion joint of the structural side wall of the rail transit station, comprising:
[0008] Expansion joint liner, which fills the expansion joint;
[0009] A centrally embedded waterstop is provided in the middle of the expansion joint and is arranged perpendicular to the expansion joint lining plate.
[0010] An externally attached waterstop is installed on the water-facing side of the structural sidewall and covers the expansion joint.
[0011] A drainage box is installed on the backwater side of the structural sidewall and covers the expansion joint, and it is connected to the drainage system of the rail transit station.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] The waterproof structure of this rail transit station uses a combination of embedded waterstop and external waterstop to form a two-level waterproofing for the expansion joints. The drainage box further waterproofs the expansion joints and collects and discharges the infiltrated water into the drainage system. The expansion joint liner is filled in the expansion joint to provide cushioning and support, adapt to the deformation of the structure, so that the expansion joints of the structural sidewalls have good waterproofing capabilities. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;
[0015] Figure 2 for Figure 1 A schematic diagram showing the partial arrangement of the partition plate within the drainage box.
[0016] The reference numerals in the accompanying drawings include: 1. Expansion joint lining plate; 2. Embedded waterstop; 3. External waterstop; 4. Drainage box; 5. Sealing layer; 6. First anti-permeability coating; 7. Second anti-permeability coating; 8. Partition plate; 81. Inclined block; 82. Horizontal block. Detailed Implementation
[0017] The present invention will be further described in detail below through specific embodiments:
[0018] like Figure 1 As shown in the figure, this utility model embodiment proposes a waterproof structure for rail transit stations, which is installed in the expansion joint of the structural side wall of the rail transit station. It includes an expansion joint liner 1, a centrally embedded waterstop 2, an externally attached waterstop 3, and a drainage box 4. The expansion joint liner 1 fills the expansion joint; the centrally embedded waterstop 2 is located in the middle of the expansion joint and is arranged perpendicular to the expansion joint liner 1; the externally attached waterstop 3 is located on the water-facing side of the structural side wall and covers the expansion joint; the drainage box 4 is located on the water-repellent side of the structural side wall and covers the expansion joint, and it is connected to the drainage system of the rail transit station.
[0019] The waterproof structure of this rail transit station uses a combination of embedded waterstop and external waterstop 3 to form a two-level waterproofing for the expansion joint. The drainage box 4 further waterproofs the expansion joint and collects and discharges the infiltrated water into the drainage system. The expansion joint liner 1 is filled in the expansion joint to provide buffer and support, adapt to the deformation of the structure, so that the expansion joint of the structural side wall has good waterproofing ability.
[0020] In this embodiment, the expansion joint liner 1 can be made of polyethylene foam, rubber or existing rubber-based composite materials, preferably rubber-based composite materials. For example, rubber-based composite materials are made by combining rubber and fiber materials, which can enhance their tensile strength and tear strength, and also have good chemical corrosion resistance and weather resistance.
[0021] like Figure 1 As shown, according to another embodiment of the present invention, the waterproof structure for rail transit stations further includes a sealant layer 5, which is filled in the expansion joint and faces the backwater side of the structure's sidewall.
[0022] In this embodiment, the sealant layer 5 further enhances the waterproofing capability of the expansion joint; wherein, the thickness of the sealant layer 5 can be 10mm, and the sealant layer 5 can be made of silicone sealant, polyurethane sealant or polysulfide rubber sealant, etc., so as to give it properties such as resistance to biological aging, high elasticity or high weather resistance.
[0023] like Figure 1 As shown, according to another embodiment of the present invention, the waterproof structure for rail transit stations further includes a first anti-permeability coating 6, which is applied to the expansion joint and adheres to the inner side of the externally attached waterstop 3.
[0024] In this embodiment, the first anti-permeability coating 6 further enhances the waterproofing capability of the expansion joint; the thickness of the first anti-permeability coating 6 can be 2mm and it can be processed from polyurethane waterproof coating or polymer cement waterproof coating, giving it high strength, toughness, water resistance and weather resistance.
[0025] like Figure 1 As shown, according to another embodiment of the present invention, the waterproof structure for rail transit stations further includes a second anti-permeability coating 7, which is applied to the inner wall of the drainage box 4.
[0026] In this embodiment, the second anti-permeability coating 7 further enhances the waterproofing capability of the expansion joint; the thickness of the second anti-permeability coating 7 can be 1 mm and it can be processed from epoxy resin waterproof coating to form a dense waterproof layer on the inner wall of the drainage box 4.
[0027] To quickly drain the water that has entered the drain box 4, such as Figure 1 and Figure 2 As shown, according to another embodiment of the present invention, in the waterproof structure for rail transit stations, the drainage box 4 is divided by multiple partitions 8 to form multiple liquid guiding chambers from bottom to top, and each liquid guiding chamber is connected to the drainage system.
[0028] In this embodiment, multiple liquid guiding chambers are formed inside the drainage box 4 from bottom to top. Water seeping in from different locations enters different liquid guiding chambers and is then guided into the drainage system to be drained away in time. This prevents water from entering the bottom side of the drainage box 4 and accumulating without being drained away in time, which could cause water to seep into the back side of the structural sidewall.
[0029] Each of the partitions 8 includes an inclined block segment 81 and a horizontal block segment 82. The inclined block segment 81 is inclinedly disposed in the drainage box 4. The horizontal block segment 82 is disposed in the drainage box 4 and connected to the lower end of the inclined block segment 81. The horizontal block segment 82 has a drainage hole connected to the drainage system.
[0030] Here, water entering the liquid guiding chamber is guided by the inclined block 81 to collect above the horizontal block 82, and then discharged from the drain hole into the drainage system for timely removal. In this embodiment, the drain hole and the drainage system can be connected by a pipe for liquid guiding.
[0031] It should be noted that the drainage system mentioned is the existing drainage system in the rail transit station, and will not be described in further detail here.
[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A waterproof structure for a rail transit station, provided in a deformation joint of a structural side wall of a rail transit station, characterized in that, include: Expansion joint liner, which fills the expansion joint; A centrally embedded waterstop is provided in the middle of the expansion joint and is arranged perpendicular to the expansion joint lining plate. An externally attached waterstop is installed on the water-facing side of the structural sidewall and covers the expansion joint. A drainage box is installed on the backwater side of the structural sidewall and covers the expansion joint, and it is connected to the drainage system of the rail transit station.
2. The waterproof structure for a rail transit station according to claim 1, characterized in that, It also includes a sealant layer, which is filled within the expansion joint and faces the backwater side of the structural sidewall.
3. The waterproof structure for rail transit station according to claim 1, characterized in that, It also includes a first anti-permeability coating, which is applied inside the expansion joint and adheres to the inner side of the external waterstop.
4. The waterproof structure for a rail transit station according to claim 1, characterized in that, It also includes a second anti-permeability coating, which is applied to the inner wall of the drainage box.
5. The waterproof structure for a rail transit station according to any one of claims 1-4, characterized in that, The drainage box is divided into multiple liquid guiding chambers from bottom to top by multiple partitions, and each liquid guiding chamber is connected to the drainage system.
6. The waterproof structure for a rail transit station according to claim 5, characterized in that, Each of the aforementioned partitions includes: Inclined block segment, wherein the inclined block segment is inclinedly disposed within the drainage box; A horizontal block segment is provided inside a drainage box and connected to the lower end of an inclined block segment. The horizontal block segment has a drainage hole connected to a drainage system.