A waterproof structure for expansion joints of railway platform canopies

Abstract

This application discloses a waterproof structure for expansion joints in railway platform canopies, relating to the field of railway platform canopy construction technology. It includes canopy roof panels with expansion joints between them. Structural beams extend upwards from both sides of the expansion joints, and a cover plate is positioned above the expansion joints. The cover plate extends towards the other structural beam, and a waterproof layer is applied to the cover plate and the outer side of the canopy roof panels. The cover plate shields the expansion joints on the canopy roof panels, preventing direct water ingress and leakage. The waterproof layer, applied to the cover plate, structural beams, and the outer side of the canopy roof panels, provides waterproofing to the area above the cover plate and the canopy roof panels, preventing rainwater from seeping through the cover plate into the expansion joints and causing leaks.

Description

Technical Field

[0001] This application relates to the field of railway platform canopy construction technology, and in particular to a waterproof structure for the expansion joint of a railway platform canopy. Background Technology

[0002] With the large-scale development of railways, the number of railway stations has also increased. In the construction of railway passenger stations, the expansion joint of the platform canopy roof is a crucial part of the design. When waterproofing the expansion joint of the platform canopy, a waterstop is installed in the middle of the expansion joint of the canopy roof slab and waterproof membrane is pasted on the base layer of the roof slab.

[0003] Regarding the aforementioned technologies, the inventors believe that existing waterproofing structures for platform canopies using expansion joints rely on simple waterproofing with waterstops, which are prone to damage, leading to water seepage in the expansion joints after construction. Utility Model Content

[0004] The purpose of this application is to provide a waterproof structure for the expansion joints of railway platform canopies, in order to improve the problem that existing waterproof structures for expansion joints of platform canopies use waterstops for simple waterproofing, which are prone to damage and thus easily lead to water seepage at the expansion joints after construction.

[0005] This application provides a waterproof structure for the expansion joint of a railway platform canopy, employing the following technical solution:

[0006] A waterproof structure for expansion joints in railway platform canopies includes canopy roof panels, expansion joints between the canopy roof panels, structural beams extending upwards on both sides of the expansion joints, and a cover plate covering the expansion joints above the structural beams. A waterproof layer is provided on the cover plate and the outer side of the canopy roof panels.

[0007] By adopting the above technical solution, a cover plate is installed on the structural beam above the expansion joint to cover the expansion joint on the canopy roof panel and prevent water from falling directly into the expansion joint and causing leakage. A waterproof layer is installed on the cover plate, the structural beam and the outside of the canopy roof panel to waterproof the area above the cover plate and the canopy roof panel, preventing rainwater from penetrating the cover plate and flowing into the expansion joint, causing the canopy roof panel to leak.

[0008] Optionally, one end of the cover plate is cast-in-place and fixedly connected to the structural beam located on one side of the expansion joint, and the cover plate extends to the structural beam on the other side of the expansion joint and is separated from the structural beam.

[0009] By adopting the above technical solution, the cover plate is fixedly connected to the structural beam on one side of the expansion joint, and the cover plate extends to the structural beam on the other side of the expansion joint and is separated from the structural beam to prevent the cover plate from being damaged when the expansion joint expands and contracts.

[0010] Optionally, a drip edge is provided at one end of the cover plate away from the connection between the cover plate and the structural beam and on the side closer to the roof panel of the canopy, and the waterproof layer extends along the outer side of the cover plate toward the drip edge.

[0011] By adopting the above technical solution, a drip edge is set at one end of the cover plate away from the connection between the cover plate and the structural beam and on the side closer to the roof panel of the canopy. This allows rainwater flowing down from the cover plate to drip along the drip edge, preventing rainwater from seeping into the inner wall of the cover plate. The waterproof layer extends along the outer wall of the cover plate towards the drip edge, preventing rainwater from seeping into the exposed part of the cover plate and causing water to seep into the expansion joints of the roof panel of the canopy.

[0012] Optionally, a second waterproof layer is provided on the side wall of the structural beam separated from the cover plate and extending toward the canopy roof panel. A second waterproof layer (5) is provided on the side wall of the structural beam (2) separated from the cover plate (3) and extending toward the canopy roof panel (1). The portion of the second waterproof layer (5) above the structural beam (2) extends toward the inner side wall of the cover plate (3).

[0013] By adopting the above technical solution, the second waterproof layer extends along the side wall of the structural beam separated from the cover plate to the canopy roof panel, and the part of the second waterproof layer above the structural beam extends to the inner side wall of the cover plate, thereby blocking the gap between the cover plate and the structural beam and preventing rainwater from seeping into the expansion joint through the gap and causing the canopy roof panel to leak.

[0014] Optionally, the second waterproof layer abuts against the inner wall of the cover plate and the side of the drip edge near the expansion joint.

[0015] By adopting the above technical solution, the second waterproof layer abuts against the side of the drip edge near the expansion joint along the inner wall of the cover plate, so that the drip edge blocks the connection between the second waterproof layer and the inner wall of the cover plate, reducing the possibility of rainwater seeping into the connection between the second waterproof layer and the cover plate.

[0016] Optionally, a pad is provided between the canopy roof panel and the first and second waterproof layers to raise the positions of the first and second waterproof layers near the structural beams.

[0017] By adopting the above technical solution, a pad is installed between the canopy roof panel and the first and second waterproof layers to raise the position of the first and second waterproof layers near the structural beam, so that rainwater can quickly flow out from the connection between the canopy roof panel and the structural beam and prevent rainwater from accumulating.

[0018] Optionally, sealing strips are provided at the connection between the first waterproof layer and the cover plate, and at the connection between the second waterproof layer and the cover plate and the structural beam.

[0019] By adopting the above technical solution, sealing strips are installed at the connection points of waterproof layer one and waterproof layer two with the cover plate and structural beam. The connection ends of waterproof layer one and waterproof layer two are waterproofed to prevent water from seeping in and causing the connection points of waterproof layer one and waterproof layer two with the canopy roof panel to separate, thus preventing water seepage and leakage from the canopy roof panel.

[0020] Optionally, cement nails are provided between the first waterproof layer, the second waterproof layer and the sealing strip, the cover plate and the structural beam to fix the first waterproof layer and the second waterproof layer.

[0021] By adopting the above technical solution, cement nails are driven into the cover plate and structural beam at the position of the sealing strip to fix the connection end of the first waterproof layer and the second waterproof layer, preventing rainwater from soaking and causing the sealing strip to detach and water to seep at the connection of the waterproof layers.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. Install a cover plate on the structural beam on one side of the expansion joint to cover the expansion joint on the canopy roof panel and prevent water from falling directly into the expansion joint and causing leakage. Install a waterproof layer on the cover plate, the structural beam and the outside of the canopy roof panel to waterproof the top of the cover plate and the canopy roof panel and prevent rainwater from seeping into the expansion joint and causing the canopy roof panel to leak.

[0024] 2. Waterproof layer two extends along the side wall of the structural beam separated from the cover plate towards the canopy roof panel. The portion of waterproof layer two above the structural beam extends towards the inner wall of the cover plate, thereby blocking the gap between the cover plate and the structural beam and preventing rainwater from seeping into the expansion joint and causing the canopy roof panel to leak. Waterproof layer two abuts against the drip edge near the expansion joint along the inner wall of the cover plate, so that the drip edge blocks the connection between waterproof layer two and the inner wall of the cover plate, reducing the possibility of rainwater seeping into the connection between waterproof layer two and the cover plate.

[0025] 3. Sealing strips are installed at the connection points of waterproof layer one and waterproof layer two with the cover plate and structural beams to waterproof the joint ends of waterproof layer one and waterproof layer two, preventing water seepage that could cause the joints of waterproof layer one and waterproof layer two to separate from the roof panel, resulting in water leakage. Cement nails are driven into the cover plate and structural beams at the location of the sealing strips to fix the joint ends of waterproof layer one and waterproof layer two, preventing rainwater from soaking and causing the sealing strips to detach, resulting in water leakage at the joints of the waterproof layers. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a waterproof structure at the expansion joint of a railway platform canopy.

[0027] Figure 2 This is a partial cross-sectional view of the waterproof structure in the embodiment;

[0028] Figure 3 This is a magnified view of part A in soil 2.

[0029] In the diagram, 1 is the canopy roof panel; 11 is the expansion joint; 2 is the structural beam; 3 is the cover plate; 31 is the drip edge; 4 is the first waterproof layer; 5 is the second waterproof layer; 6 is the pad; 7 is the sealing strip; and 8 is the cement nail. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 - Appendix Figure 3 This application will be described in further detail below.

[0031] A waterproof structure for expansion joints in railway platform canopies, referring to Figure 1 The system includes a canopy roof panel 1 installed on a railway platform. Expansion joints 11 are provided between the canopy roof panels 1. Structural beams 2, formed of reinforced concrete, extend upwards from both sides of the expansion joints 11 on the canopy roof panels 1. A cover plate 3, with a thickness of not less than 100 mm and a width of not less than 650 mm, is cast from reinforced concrete onto the structural beam 2 located on one side of the expansion joint 11. The cover plate 3 extends downwards by not less than 100 mm on the side of the expansion joint located away from the connection between the structural beam 2 and the cover plate 3. This design allows for the installation of a cover plate 3 on the structural beam 2. Cover the cover plate 3 to fix it to the structural beam 2 on one side of the expansion joint 11, and keep it a certain distance away from the structural beam 2 on the other side of the expansion joint 11 to prevent the expansion and contraction of the expansion joint 11 from damaging the cover plate 3. On the side of the cover plate 3, the structural beam 2 connected to the cover plate 3 and the canopy roof panel 1 away from the expansion joint 11, the waterproof layer 4 is fully laid and bonded. The waterproof layer 4 is a polyethylene polypropylene composite waterproof membrane, which waterproofs the top of the cover plate 3 and the canopy roof panel 1 to prevent rainwater from seeping into the expansion joint 11 and causing the canopy roof panel 1 to leak.

[0032] Reference Figure 2 A drip edge 31 is poured at the end of the cover plate 3 away from the connection between the cover plate 3 and the structural beam 2, and on the side closer to the canopy roof panel 1. This allows rainwater flowing down from the cover plate 3 to drip along the drip edge 31, preventing rainwater from seeping into the inner wall of the cover plate 3. The first waterproof layer 4 extends along the outer wall of the cover plate 3 towards the drip edge 31, preventing rainwater from seeping into the exposed part of the cover plate 3 and causing water to seep into the expansion joint 11 of the canopy roof panel 1. The second waterproof layer 5 is bonded to the side of the cover plate 3 closest to the canopy roof. One end of the second waterproof layer 5 abuts against the side of the drip edge 31 near the expansion joint 11. The second waterproof layer 5 is fully bonded along the inner side of the cover plate 3 towards the side wall of the structural beam 2 located on the side of the expansion joint 11 away from the connection between the cover plate 3 and the structural beam 2. The second waterproof layer 5 is also a polyethylene polypropylene composite waterproof membrane, which blocks the gap between the cover plate 3 and the structural beam 2, preventing rainwater from seeping into the expansion joint 11 through the gap and causing water leakage into the canopy roof panel 1.

[0033] Reference Figure 2 and Figure 3 At the ends where waterproof layers 4 and 5 connect to the cover plate 3 and structural beam 2, EPDM sealing strips 7 are adhered as sealing strips to waterproof the joints of waterproof layers 4 and 5, preventing water from seeping in and causing the joints between waterproof layers 4 and 5 and the canopy roof panel 1 to separate, thus preventing water leakage. Cement nails 8 are driven into the cover plate 3 and structural beam 2 at the location of the sealing strip 7 to fix the joints of waterproof layers 4 and 5, preventing rainwater from soaking and causing the sealing strip 7 to detach and leak at the joints of the waterproof layers. Lightweight pads 6 are installed between the canopy roof panel 1 and waterproof layers 4 and 5 using waterproof bolts to raise the position of waterproof layers 4 and 5 near the structural beam 2, allowing rainwater to flow out quickly from the canopy roof panel 1.

[0034] The implementation principle of this application embodiment is as follows:

[0035] During the construction of the canopy roof panel 1, structural beams 2 are poured on both sides of the expansion joint 11 located on the canopy roof panel 1. A cover plate 3 is poured on the structural beam 2 located on one side of the expansion joint 11, so that the cover plate 3 covers the structural beam 2 on the other side of the expansion joint 11, leaving a gap between the structural beam 2 on the other side of the expansion joint 11 and the cover plate 3, so that the expansion joint 11 will not damage the cover plate 3 when it expands or contracts. A waterproof layer 4 is laid on the outside of the cover plate 3 along the side of the cover plate 3, structural beam 2, and canopy roof panel 1 away from the expansion joint 11, to waterproof the cover plate 3, structural beam 2, and canopy roof panel 1. To prevent water from seeping into the canopy roof panel 1 and causing leakage, a second waterproof layer 5 is laid on the side wall of the two structural beams 2 away from the connection between the cover plate 3 and the cover plate 3, along the inner side of the cover plate 3 towards the side wall of the structural beam 2 located away from the connection between the cover plate 3 and the structural beam 2, as well as the canopy roof panel 1. This blocks the gap between the cover plate 3 and the structural beam 2. The connection between the first waterproof layer 4 and the second waterproof layer 5 is sealed and fixed with sealing strips 7 and cement nails 8 to prevent rainwater from seeping into the expansion joint 11 through the gap and causing the canopy roof panel 1 to leak.

[0036] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A waterproof structure at a deformation joint of a railway platform canopy, comprising canopy roof panels (1) provided with deformation joints (11) between the canopy roof panels (1), characterized in that: The canopy roof panel (1) is provided with structural beams (2) extending upward on both sides of the expansion joint (11). The structural beams (2) are provided with a cover plate (3) above the expansion joint (11) to cover the expansion joint (11). The cover plate (3) and the outer side of the canopy roof panel (1) are provided with a waterproof layer (4).

2. The waterproof structure at the expansion joint of a railway platform canopy according to claim 1, characterized in that: One end of the cover plate (3) is cast-in-place and fixedly connected to the structural beam (2) located on one side of the expansion joint (11). The cover plate (3) extends to the structural beam (2) on the other side of the expansion joint (11) and is separated from the structural beam (2).

3. The waterproof structure at the expansion joint of a railway platform canopy according to claim 2, characterized in that: A drip edge (31) is provided on one end of the cover plate (3) away from the connection between the cover plate (3) and the structural beam (2) and on the side close to the roof panel (1). The waterproof layer (4) extends along the outside of the cover plate (3) toward the drip edge (31).

4. The waterproof structure at the expansion joint of a railway platform canopy according to claim 3, characterized in that: A second waterproof layer (5) is provided on the side wall of the structural beam (2) that is separated from the cover plate (3) and extends toward the canopy roof panel (1). The portion of the second waterproof layer (5) above the structural beam (2) extends toward the inner side wall of the cover plate (3).

5. The waterproof structure at the expansion joint of a railway platform canopy according to claim 4, characterized in that: The second waterproof layer (5) abuts against the side of the drip edge (31) near the expansion joint (11) along the inner wall of the cover plate (3).

6. The waterproof structure at the expansion joint of a railway platform canopy according to claim 5, characterized in that: A pad (6) is provided between the canopy roof panel (1) and the first waterproof layer (4) and the second waterproof layer (5) to raise the position of the first waterproof layer (4) and the second waterproof layer (5) near the structural beam (2).

7. A waterproof structure at the expansion joint of a railway platform canopy according to claim 6, characterized in that: Sealing strips (7) are provided at the connection between the first waterproof layer (4) and the cover plate (3) and at the connection between the second waterproof layer (5) and the cover plate (3) and the structural beam (2).

8. The waterproof structure at the expansion joint (11) of a railway platform canopy according to claim 7, characterized in that: Cement nails (8) are provided between the first waterproof layer (4), the second waterproof layer (5) and the sealing strip (7), the cover plate (3), and the structural beam (2) to fix the first waterproof layer (4) and the second waterproof layer (5).

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