Waterproof structure of steel structure roof deformation joint
By setting multiple waterproof layers and deformable drainage channels at the expansion joints of steel structure roofs, the problem of water seepage at the expansion joints of steel structure roofs is solved, achieving effective waterproofing and rapid drainage, adapting to structural deformation, and avoiding sealing failure caused by rigid connections.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN DONGFENG PAINTING EQUIP CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-21
AI Technical Summary
Steel structure roofs are prone to water leakage at expansion joints, especially on equipment platforms with varying heights. Gaps or poor sealing at the connection points can lead to rainwater seepage, and equipment vibrations can exacerbate the loosening and detachment of the sealing material.
A waterproof structure for steel roof expansion joints was designed, including purlins, roof panels, guide plates, support plates, insulation layers, and waterproof layers. Through deformable connectors and guide channels, a multi-layer waterproof barrier is formed to adapt to roof structure deformation and to quickly drain rainwater in case of leakage.
It effectively prevents water seepage at the joint of the expansion joint. Through the design of multiple waterproof layers and diversion channels, it improves the impermeability, prevents rainwater leakage, adapts to structural deformation, and avoids sealing failure caused by rigid connection.
Smart Images
Figure CN224532061U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of expansion joint technology, specifically to a waterproof structure for expansion joints in steel roofs. Background Technology
[0002] Steel structure roofs are widely used in modern buildings, but due to factors such as temperature changes, loads, and structural deformation, water leakage often occurs at the expansion joints of the roof.
[0003] In particular, industrial plants often have varying elevations in their equipment platforms. If gaps or inadequate sealing exist at these joints, and waterproofing is not properly implemented, rainwater can easily accumulate at these points during heavy rainfall, potentially seeping into the plant's interior through these gaps. Furthermore, during the use of the equipment platforms, vibrations and other factors can cause the sealing materials at the joints to loosen or detach, increasing the risk of leaks. Rainwater may then enter the building through these structurally weak points, causing seepage. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a waterproof structure for steel roof expansion joints, effectively preventing water seepage at the expansion joint connections.
[0005] To address the aforementioned technical problems, this utility model provides a waterproof structure for expansion joints in steel roofs, comprising two purlins, on which roof panels are mounted. An expansion joint is provided between two adjacent roof panels, located between the two purlins. A guide plate is provided at the expansion joint, with both sides of the guide plate fixed to the purlins. A deformable guide groove is provided on the portion of the guide plate at the expansion joint. Support plates are provided on both sides of the expansion joint, with one end of each support plate fixed to the purlin and the other end extending upward perpendicularly to the purlin. A first insulation layer is provided on the side of each support plate away from the expansion joint, and a second insulation layer is provided on the top of both support plates. A waterproof layer is provided on the upper surface of both the first and second insulation layers. A connector is provided between the two support plates, and the connector is adaptable to the deformation of the roof structure.
[0006] In some embodiments, the connector includes two overlapping members, one end of which is fixedly connected to a support plate, and the other ends of which are movably overlapping each other.
[0007] In some embodiments, the connector includes a first angle steel and a second angle steel arranged symmetrically at the center. One end of the first angle steel and the second angle steel is provided with an end plate. The first angle steel and the second angle steel are fixed to the support plate by the end plate. The other end of the first angle steel is movably overlapped with the other end of the second angle steel.
[0008] In some embodiments, the connector includes an arc-shaped plate, with its two sides respectively fixedly connected to two support plates.
[0009] In some embodiments, the arc-shaped plate and the support plate are integrally formed.
[0010] In some embodiments, an additional purlin is provided on the side of the support plate away from the expansion joint, the additional purlin is fixed together with the support plate on the purlin, the first insulation layer is provided on the side of the additional purlin away from the support plate, and the second insulation layer is arranged on the top of the additional purlin.
[0011] In some embodiments, the additional purlin is U-shaped, with one side of its opening away from the support plate. A flange is provided at the opening of the additional purlin. The waterproof layer includes a first waterproof layer and a second waterproof layer. One end of the first waterproof layer is fixed to the flange at the top of the additional purlin. The second waterproof layer is laid on the first waterproof layer and covers the second insulation layer.
[0012] In some embodiments, the first waterproof layer, the first thermal insulation layer, and the roof panel are fixedly connected.
[0013] In some embodiments, the upper surface of the second insulation layer is provided with a drainage angle.
[0014] In some embodiments, a third waterproof layer is provided between the deflector and the purlin.
[0015] The beneficial effects of this utility model are as follows:
[0016] 1. This utility model avoids the failure of sealing and waterproofing structures caused by rigid connections between structures by setting up connectors that adapt to the deformation of the roof structure and deformable drainage channels. In case of rainwater leakage, it can be quickly discharged through the drainage channels.
[0017] 2. By setting up a guide plate and a third waterproof layer, this utility model can further block rainwater leakage. By setting up a first waterproof layer (base sealing) and a second waterproof layer (full coverage) to form a redundant barrier, the impermeability of the expansion joint is improved. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;
[0020] Figure 3 This is a schematic diagram of the lap joint when angle steel is used as the connector in this utility model;
[0021] Figure 4This is a structural diagram of the connector of this utility model when an arc-shaped plate is used.
[0022] Reference numerals: 1. Purlin; 2. Roof panel; 3. Baffle plate; 4. Support plate; 5. First angle steel; 6. Second angle steel; 7. Curved plate; 8. Additional purlin; 9. Flanged edge; 10. First waterproof layer; 11. Second waterproof layer; 12. Third waterproof layer; 13. First insulation layer; 14. Second insulation layer; 15. Steel column; 16. Exterior wall panel; 17. Steel beam. Detailed Implementation
[0023] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0024] like Figure 1 As shown, the higher equipment platform (corresponding to) Figure 1 Expansion joints need to be installed at the connection between the steel column 15 and the lower factory roof. If there are gaps or the seal is not tight at this connection, water seepage is likely to occur.
[0025] like Figure 1 As shown, this utility model provides a waterproof structure for expansion joints in steel roofs, including two purlins 1, with roof panels 2 mounted on the purlins 1. An expansion joint is provided between two adjacent roof panels 2, located between the two purlins 1. A guide plate 3 is installed at the expansion joint, with both sides of the guide plate 3 fixed to the purlins 1. The portion of the guide plate 3 located at the expansion joint has a guide channel, which is arc-shaped and connected to the roof drainage system. The inclination angle of the guide channel is not less than 5°. Supports are provided on both sides of the expansion joint. Support plate 4 has an L-shaped cross-section. One end of support plate 4 is fixed to purlin 1 and located between roof panel 2 and purlin 1. The other end of support plate 4 extends upward perpendicularly to purlin 1. A first insulation layer 13 is provided on the side of both support plates 4 away from the expansion joint. A second insulation layer 14 is provided on the top of both support plates 4. A waterproof layer is provided on the upper surface of both the first insulation layer 13 and the second insulation layer 14. A connector is provided between the two support plates 4. The connector can adapt to the deformation of the roof structure.
[0026] It is understood that the connector of this utility model can move with the deformation of the roof, and the guide plate 3 with the guide channel can also deform with the deformation of the roof, which avoids the failure of the sealing and waterproof structure caused by the rigid connection between the structures, and in case of rainwater leakage, it can be quickly discharged through the guide channel.
[0027] In some embodiments, the connector includes two overlapping members, one end of which is fixedly connected to the support plate 4, and the other ends of which are movably overlapping each other.
[0028] like Figure 3 As shown, the connector includes a first angle steel 5 and a second angle steel 6 arranged symmetrically in the center. One end of the first angle steel 5 and the second angle steel 6 is provided with an end plate. The first angle steel 5 and the second angle steel 6 are fixed to the support plate 4 through the end plate. The other end of the first angle steel 5 is movably overlapped with the other end of the second angle steel 6.
[0029] In some embodiments, such as Figure 4 As shown, the connector can also be an arc plate 7. The two sides of the arc plate 7 are fixedly connected to two support plates 4 respectively. The arc plate 7 can also adapt to the deformation of the roof structure. The arc plate 7 and the support plate 4 are integrally formed, that is, when making the support plate 4, the support plate 4 is directly processed into an Ω shape.
[0030] In some embodiments, such as Figure 1 , 2 As shown, an additional purlin 8 is provided on the side of the support plate 4 away from the expansion joint. The additional purlin 8 is fixed together with the support plate 4 on the purlin 1. The first insulation layer 13 is provided on the side of the additional purlin 8 away from the support plate 4, and the second insulation layer 14 is arranged on the top of the additional purlin 8.
[0031] The additional purlin 8 is U-shaped, with one open side away from the supporting plate 4. A flange 9 is provided at the opening of the additional purlin 8. The waterproof layer includes a first waterproof layer 10 and a second waterproof layer 11. One end of the first waterproof layer 10 is fixed to the flange 9 at the top of the additional purlin 8, and the other end of the first waterproof layer 10, near the steel column 15, extends to the outer wall panel 16 of the steel column 15. The second waterproof layer 11 is laid on top of the first waterproof layer 10 and covers the second insulation layer 14. One end of the second waterproof layer 11 also extends to the outer wall panel 16 of the steel column 15. By setting a double waterproof layer that extends to the outer wall panel 16 of the steel column 15, water seepage between the steel column 15 and the supporting plate 4 can be prevented.
[0032] The end plates of the first angle steel 5 and the second angle steel 6, the support plate 4, the additional purlin 8, and the first insulation layer 13 can be fixed with self-tapping screws.
[0033] In some embodiments, the first waterproof layer 10, the first thermal insulation layer 13, and the roof panel 2 are fixedly connected.
[0034] In some embodiments, the upper surface of the second insulation layer 14 is provided with a drainage angle.
[0035] In some embodiments, a third waterproof layer 12 is provided between the guide plate 3 and the purlin 1. This can further prevent water leakage at the expansion joint. The additional purlin 8, support plate 4, guide plate 3, and third waterproof layer 12 can also be fixed together using self-tapping screws.
[0036] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.
Claims
1. A waterproof structure for expansion joints in steel roofs, characterized in that: The roof structure includes two purlins (1), on which roof panels (2) are installed. An expansion joint is provided between two adjacent roof panels (2). The expansion joint is located between the two purlins (1). A guide plate (3) is provided at the expansion joint. The two sides of the guide plate (3) are fixed to the purlins (1). A deformable guide groove is provided on the part of the guide plate (3) located at the expansion joint. Support plates (4) are provided on both sides of the expansion joint. One end of the support plate (4) is fixed to the purlin (1). The other end of the support plate (4) extends upward perpendicular to the purlin (1). A first insulation layer (13) is provided on the side of the two support plates (4) away from the expansion joint. A second insulation layer (14) is provided on the top of the two support plates (4). A waterproof layer is provided on the upper surface of the first insulation layer (13) and the second insulation layer (14). A connector is provided between the two support plates (4). The connector can adapt to the deformation of the roof structure.
2. The waterproof structure for steel roof expansion joints according to claim 1, characterized in that: The connector includes two overlapping members, one end of which is fixedly connected to the support plate (4), and the other ends of which are movably overlapping each other.
3. The waterproof structure for steel roof expansion joints according to claim 2, characterized in that: The connector includes a first angle steel (5) and a second angle steel (6) arranged symmetrically at the center. One end of the first angle steel (5) and the second angle steel (6) is provided with an end plate. The first angle steel (5) and the second angle steel (6) are fixed on the support plate (4) by the end plate. The other end of the first angle steel (5) is movably connected to the other end of the second angle steel (6).
4. The waterproof structure for steel roof expansion joints according to claim 1, characterized in that: The connector includes an arc-shaped plate (7), and the two sides of the arc-shaped plate (7) are fixedly connected to two support plates (4) respectively.
5. The waterproof structure for steel roof expansion joints according to claim 4, characterized in that: The arc-shaped plate (7) and the support plate (4) are integrally formed.
6. The waterproof structure for steel roof expansion joints according to any one of claims 1 to 5, characterized in that: An additional purlin (8) is provided on the side of the support plate (4) away from the expansion joint. The additional purlin (8) is fixed together with the support plate (4) on the purlin (1). The first insulation layer (13) is provided on the side of the additional purlin (8) away from the support plate (4). The second insulation layer (14) is arranged on the top of the additional purlin (8).
7. The waterproof structure for steel roof expansion joints according to claim 6, characterized in that: The additional purlin (8) is U-shaped, with one side of its opening away from the support plate (4). A flange (9) is provided at the opening of the additional purlin (8). The waterproof layer includes a first waterproof layer (10) and a second waterproof layer (11). One end of the first waterproof layer (10) is fixed to the flange (9) at the top of the additional purlin (8). The second waterproof layer (11) is laid on the first waterproof layer (10) and covers the second insulation layer (14).
8. The waterproof structure for steel roof expansion joints according to claim 7, characterized in that: The first waterproof layer (10), the first thermal insulation layer (13), and the roof panel (2) are fixedly connected.
9. The waterproof structure for steel roof expansion joints according to claim 7, characterized in that: The upper surface of the second insulation layer (14) is provided with a drainage angle.
10. The waterproof structure for steel roof expansion joints according to any one of claims 1 to 5, characterized in that: A third waterproof layer (12) is provided between the guide plate (3) and the purlin (1).