Waterproof structure penetrating a steel column of a metal roof

Abstract

The utility model relates to a waterproof structure of penetrating metal roof steel column, waterproof sealing is good, its scheme includes metal roof and the steel column of penetrating metal roof, is equipped with upper layer water spreading board, second layer waterproof roll material, lower layer water spreading board, galvanized steel flat plate, first layer waterproof roll material from top to bottom in proper order, wherein first layer waterproof roll material is laid on the heat -preserving cotton around steel column and is fixed on steel column with turning up, galvanized steel flat plate, upper layer water spreading board and lower layer water spreading board all are annular and are set on steel column, and the inner ring of galvanized steel flat plate is welded on steel column, and the inner ring of lower layer water spreading board is bent upwards to form the upper edge of turning up, and the upper edge of turning up is welded on steel column, and second layer waterproof roll material is laid along lower layer water spreading board surface, and second layer waterproof roll material turns up to steel column and covers the upper edge of turning up, and second layer waterproof roll material other side extends to metal roof, Z type aluminium plate is set as the support between upper layer water spreading board and lower layer water spreading board, and the end of waterproof roll material is sealed with sealant.

Description

Technical Field

[0001] This utility model relates to waterproofing treatment of roofs, specifically to a waterproofing structure that penetrates steel columns of a metal roof. Background Technology

[0002] With the widespread application of steel structure buildings, double-layer metal roofs are often used in some large buildings. This involves installing a layer of tall, decorative metal panels or large billboards on top of the metal roof, requiring steel columns to penetrate the metal roof as support for the panels or billboards. Leakage is a common problem in metal roof structures, with openings in the roof being a major source of leaks. Metal panels have a high thermal conductivity; when the external temperature changes significantly, the panels shrink and deform due to the large temperature difference, causing significant displacement at the joints. This makes the joints prone to leaks. Furthermore, since steel structures dominate in metal roof systems, they are susceptible to elastic deformation under temperature changes or external forces such as wind and snow loads, leading to displacement at the connections and potential leaks. The causes of metal roof leaks are multifaceted, but the key lies in the rationality of the design and construction details and the compliance of the construction procedures. Design is the foundation for meeting all safety and functional requirements, and therefore, it is crucial to ensure the safety, applicability, and economic rationality of the structural details during the design phase.

[0003] For waterproofing designs penetrating metal roofs, there are already many existing waterproofing solutions. For example, publication numbers CN115749160A and CN116591406A respectively provide two different waterproofing solutions for penetrating metal roofs. However, both solutions share a common problem: the first layer of waterproofing on the exterior side is isolated from the vertical steel columns using flexible membranes or rubber gaskets, and then fixed with clamps and sealant. Specifically, in CN115749160A, the first layer of waterproofing on the exterior side involves laying a second waterproof membrane on the surface of the steel column, using a second stainless steel clamp to press the second waterproof membrane tightly, and applying silicone weather-resistant sealant to the connection between the second waterproof membrane and the steel column. In CN116591406A, the first layer of waterproofing on the exterior side involves placing rubber gaskets and sealant between the vertically installed panel and the steel frame column, and using clamps to press the vertically installed panel tightly onto the steel frame column. Therefore, it is evident that the first layer of waterproofing on the outdoor side in both of the aforementioned patents relies on the sealing between steel columns and waterproof membranes or rubber gaskets. However, due to the different expansion coefficients of the steel columns and the flexible membranes or rubber gaskets, the steel columns may undergo significant deformation and displacement under extreme weather conditions. This can lead to the flexible membranes or rubber gaskets separating from the steel columns or becoming loose, thus causing the first layer of waterproofing to fail. Therefore, the first layer of waterproofing in the aforementioned prior art is actually not very effective. Utility Model Content

[0004] The present invention discloses a waterproof structure that penetrates steel columns in a metal roof. It features multiple waterproof structures, taking into full account the difference in expansion coefficients between the steel columns and the waterproof materials. The multiple waterproof structures employ an interleaved design of different materials, which effectively improves the waterproof effect of each waterproof structure and ensures that the metal roof has good waterproof sealing as a whole.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A waterproof structure penetrating a metal roof and a steel column includes a metal roof and a steel column penetrating the metal roof. A first layer of waterproof membrane is covered on the metal roof insulation around the steel column. The first layer of waterproof membrane extends from the metal roof insulation to the outer wall of the steel column. The extended portion of the first layer of waterproof membrane is fixed to the steel column with a lower stainless steel clamp. The gap between the end of the first layer of waterproof membrane and the steel column is sealed with sealant. A ring-shaped galvanized steel plate is fitted onto the steel column above the first layer of waterproof membrane. The inner ring of the galvanized steel plate is welded to the steel column. A ring-shaped lower flashing is laid on the top surface of the galvanized steel plate. The inner edge of the lower flashing is bent upwards to form an upturned edge, which is welded to the steel column. The lower flashing is covered with a galvanized steel plate. The galvanized steel flat plate and the lower flashing are fixedly connected with each other using rivets, and the rivet heads are coated with sealant. A second layer of waterproof membrane is laid on the top surface of the lower flashing, and the second layer of waterproof membrane is turned up to the outer wall of the steel column. The other side of the second layer of waterproof membrane extends along the surface of the lower flashing to the metal roof for full adhesion. The turned-up part of the second layer of waterproof membrane covers the turned-up edge of the lower flashing. The turned-up part of the second layer of waterproof membrane is fixed to the steel column with stainless steel clamps. The gap between the turned-up end of the second layer of waterproof membrane and the steel column is filled with sealant. An annular upper flashing is fitted on the steel column above the second layer of waterproof membrane, and the upper flashing covers the lower flashing. The inner ring of the upper flashing is welded to the steel column.

[0007] Furthermore, a Z-shaped aluminum plate is provided between the upper flashing and the lower flashing. The upper flashing is fixed to the upper flange of the Z-shaped aluminum plate by rivets with sealant applied to the nail heads. The lower flange of the Z-shaped aluminum plate is pressed onto the second layer of waterproof membrane. The lower flange of the Z-shaped aluminum plate, the lower flashing, and the galvanized steel plate are fixed together by rivets.

[0008] Furthermore, a waist-shaped hole is formed on the lower flange of the Z-shaped aluminum plate.

[0009] Furthermore, the lower part of the galvanized steel plate is provided with an aluminum alloy support, the lower part of which is fixed to the roof, and the galvanized steel plate is fixed to the upper part of the aluminum alloy support by rivets.

[0010] Furthermore, the outer edge of the lower flashing plate is bent downward to form a lower hanging plate, which is located outside the outer edge of the galvanized steel plate.

[0011] Furthermore, the outer edge of the upper flashing is bent downward to form a lower hanging plate, and the distance from the lower hanging plate of the upper flashing to the outer wall of the steel column is greater than the distance from the lower hanging plate of the lower flashing to the steel column.

[0012] Furthermore, the bottom end of the lower hanging plate of the upper flashing is bent towards the steel column to form a hook shape.

[0013] Furthermore, the upper and lower flashing plates are made of galvanized steel or aluminum.

[0014] The waterproof structure designed in this utility model consists of five layers of waterproofing from top to bottom: an upper flashing, a second layer of waterproof membrane, a lower flashing, a galvanized steel plate, and a first layer of waterproof membrane. As can be seen, these five layers are constructed by interweaving metal sheets and flexible materials, avoiding the waterproofing failure caused by the difference in expansion coefficients between flexible materials and steel columns when using only flexible materials for waterproofing. Compared to existing technologies that directly use waterproof membranes at the top, this utility model achieves waterproofing at the top through an upper flashing. The flashing is typically made of galvanized steel or aluminum, and both the flashing and steel columns are made of metal with very small differences in expansion coefficients, preventing the two from separating due to deformation of the steel column. This makes the waterproof sealing performance of the solution designed in this utility model significantly superior to existing technologies. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the waterproof structure that penetrates the steel column of the metal roof in the embodiment.

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a structural schematic diagram of the aluminum alloy support component.

[0018] Figure label:

[0019] 1. Metal roofing; 2. Waterproof membrane; 3. Stainless steel clamps; 4. Galvanized steel flat sheets; 5. Flashing; 6. Rivets; 7. Aluminum alloy supports; 8. Z-shaped aluminum plates; 9. Sealant; 10. Steel columns. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] This embodiment discloses a waterproof structure that penetrates steel columns in a metal roof, the structure of which is as follows: Figure 1 and Figure 2 As shown, the structure mainly includes a metal roof 1, steel columns 10 penetrating the metal roof 1, waterproof membrane 2, stainless steel clamps 3, galvanized steel plates 4, flashing 5, aluminum alloy supports 7, and Z-shaped aluminum plates 8. In this embodiment, five waterproof structures are set up for the waterproofing treatment at the location where the steel column 10 penetrates the metal roof 1, from top to bottom, representing the first to the fifth waterproof structures.

[0022] The first waterproofing structure is designed as follows: a ring-shaped upper flashing plate 5 is fitted onto the steel column 10. The inner ring of the upper flashing plate 5 is welded to the steel column 10 to avoid gaps between the upper flashing plate 5 and the steel column 10. The outer edge of the upper flashing plate 5 is bent downward to form a lower hanging plate, and the bottom end of the lower hanging plate is bent towards the steel column 10 to form a hook shape. The lower hanging plate can block rainwater on the outside of the lower hanging plate, and the hook-shaped bend can increase the strength of the lower hanging plate and reduce the risk of rainwater backflow.

[0023] The third waterproofing structure is configured as follows: A ring-shaped lower flashing 5 is installed below the upper flashing 5. The inner edge of the lower flashing 5 is bent upwards to form an upturned edge, which is then welded to the outer wall of the steel column 10 for fixation. The outer edge of the lower flashing 5 is also bent downwards to form a lower hanging plate, but the radial width of the upper flashing 5 is greater than that of the lower flashing 5, so that the lower hanging plate of the upper flashing 5 is located outside the lower hanging plate of the lower flashing 5. The lower hanging plate of the upper flashing 5 can block most of the rainwater.

[0024] To strengthen the support of the upper flashing 5, a Z-shaped aluminum plate 8 is provided between the upper and lower flashing 5. The upper flashing 5 is fixed to the upper flange of the Z-shaped aluminum plate 8 with rivets 6. In this embodiment, all rivet heads are coated with sealant for waterproofing. The lower flange of the Z-shaped aluminum plate 8 is fixed to the lower flashing 5 with rivets 6. Both the upper and lower flashing 5 are made of galvanized steel or aluminum plates to avoid gaps at the connection points caused by deformation due to excessive differences in the coefficients of thermal expansion with the steel column 10. A slotted hole is provided on the lower flange of the Z-shaped aluminum plate 8 to facilitate drainage.

[0025] The second waterproofing structure is set up as follows: The upper waterproof membrane 2 is laid along the top surface of the lower flashing 5, with one side of the upper waterproof membrane 2 folded up onto the outer wall of the steel column 10, covering the folded edge of the lower flashing 5. The folded edge of the upper waterproof membrane 2 is then fixed to the steel column 10 using stainless steel clamps 3, and the gap between the folded end and the steel column 10 is sealed with sealant 9. The other side of the upper waterproof membrane 2 is laid evenly along the surface of the lower flashing 5's undercoat and extends to the metal roof 1 for full adhesion, preventing rainwater dripping from the lower flashing 5's undercoat from entering the inner side of the lower flashing 5's undercoat. When laying the upper waterproof membrane 2, the lower flashing 5 is installed first, then the upper waterproof membrane 2 is laid, and finally the Z-shaped aluminum plate 8 is installed, ensuring that the lower flange of the Z-shaped aluminum plate 8 can press down on the upper waterproof membrane 2.

[0026] The fourth waterproofing structure is set as follows: A ring-shaped galvanized steel plate 4 is set at the lower part of the lower flashing 5. The galvanized steel plate 4 is fitted onto the steel column 10. The inner ring of the galvanized steel plate 4 is welded to the steel column 10. The outer edge of the galvanized steel plate 4 is located inside the lower hanging plate of the lower flashing 5. The lower flashing 5, the lower flange of the Z-shaped aluminum plate 8 and the galvanized steel plate 4 are fixedly connected together with rivets 6.

[0027] To strengthen the support for the lower flashing 5 and the galvanized steel plate 4, in this embodiment, a structure is provided below the galvanized steel plate 4 as follows: Figure 3 The aluminum alloy support 7 shown has its lower part fixed to the crest of the metal roof, and its upper part forming a flange plate. The lower flashing plate 5, the lower flange of the Z-shaped aluminum plate 8, and the galvanized steel plate 4 are fixed together to the flange plate of the aluminum alloy support 7 with rivets 6.

[0028] The fifth waterproofing structure is set up as follows: a lower layer of waterproof membrane 2 is laid on the insulation cotton of the metal roof 1 around the steel column 10 under the galvanized steel plate 4. The lower layer of waterproof membrane 2 extends from the upper side of the insulation cotton of the metal roof 1 all the way up to the outer wall of the steel column 10. The upturned part of the lower layer of waterproof membrane 2 is fixed to the steel column 10 with a lower stainless steel clamp 3. The gap between the upturned end of the lower layer of waterproof membrane 2 and the steel column 10 is sealed with sealant 9.

[0029] In the five-layer waterproof structure of this invention, the first layer of waterproofing at the top uses a metal flashing 5 to block rainwater. Since the flashing 5 and the steel column 10 are both made of metal, their coefficients of expansion are very similar. Even if the steel column 10 deforms under extreme weather conditions, no deformation gaps will form at the connection with the flashing 5. This truly achieves the sealing effect of the first layer of waterproofing, unlike existing technologies that directly use flexible materials as the first layer. In this invention, both the upper and lower layers of waterproof membrane 2 are respectively placed under the upper and lower flashing 5. The flashing 5 acts as a flexible waterproof membrane 2 to block rainwater, reducing the possibility of water seepage through the gaps between the steel column 10 and the waterproof membrane 2 due to deformation of the steel column 10.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof structure for steel columns penetrating a metal roof, comprising a metal roof and steel columns penetrating the metal roof, characterized in that: A first layer of waterproof membrane is laid on the metal roof insulation around the steel column. This first layer extends from the metal roof insulation to the outer wall of the steel column, and the upturned portion is secured to the steel column with stainless steel clamps. The gap between the end of the first layer of waterproof membrane and the steel column is sealed with sealant. A ring-shaped galvanized steel plate is fitted onto the steel column above the first layer of waterproof membrane, with its inner ring welded to the column. A ring-shaped lower flashing is laid on top of the galvanized steel plate, with its inner edge bent upwards to form an upturned edge, which is welded to the steel column. The lower flashing covers the galvanized steel plate, and the lower flashing and the galvanized steel plate are connected by… The connection is secured with rivets, and the rivet heads are coated with sealant. A second layer of waterproof membrane is laid on the top surface of the lower flashing, and the second layer of waterproof membrane is turned up onto the outer wall of the steel column. The other side of the second layer of waterproof membrane extends along the surface of the lower flashing to the metal roof for full adhesion. The turned-up part of the second layer of waterproof membrane covers the turned-up edge of the lower flashing. The turned-up part of the second layer of waterproof membrane is fixed to the steel column with stainless steel clamps. The gap between the turned-up end of the second layer of waterproof membrane and the steel column is filled with sealant. An annular upper flashing is fitted on the steel column above the second layer of waterproof membrane, and the upper flashing covers the lower flashing. The inner ring of the upper flashing is welded to the steel column.

2. The waterproof structure for penetrating steel columns in a metal roof according to claim 1, characterized in that: A Z-shaped aluminum plate is provided between the upper flashing and the lower flashing. The upper flashing is fixed to the upper flange of the Z-shaped aluminum plate by rivets with sealant applied to the nail heads. The lower flange of the Z-shaped aluminum plate is pressed on the second layer of waterproof membrane. The lower flange of the Z-shaped aluminum plate, the lower flashing, and the galvanized steel plate are fixed together by rivets.

3. A waterproof structure for penetrating steel columns in a metal roof according to claim 2, characterized in that: The Z-shaped aluminum plate has a waist-shaped hole on its lower flange.

4. A waterproof structure for penetrating steel columns in a metal roof according to claim 1, characterized in that: The lower part of the galvanized steel plate is provided with an aluminum alloy support. The lower part of the aluminum alloy support is fixed to the roof, and the galvanized steel plate is fixed to the upper part of the aluminum alloy support by rivets.

5. A waterproof structure for penetrating steel columns in a metal roof according to claim 1, characterized in that: The outer edge of the lower flashing plate is bent downward to form a lower hanging plate, which is located outside the outer edge of the galvanized steel plate.

6. A waterproof structure for penetrating steel columns in a metal roof according to claim 5, characterized in that: The outer edge of the upper flashing is bent downward to form a lower hanging plate. The distance from the lower hanging plate of the upper flashing to the outer wall of the steel column is greater than the distance from the lower hanging plate of the lower flashing to the steel column.

7. A waterproof structure for penetrating steel columns in a metal roof according to claim 6, characterized in that: The bottom end of the lower hanging plate of the upper flashing is bent towards the steel column to form a hook shape.

8. A waterproof structure for penetrating steel columns in a metal roof according to claim 1, characterized in that: The upper and lower flashing plates are made of galvanized steel or aluminum.

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