Waterproof structure at joint of steel structure building coating veneer outer wall and steel member
By using rock wool, modified silicone building sealant and waterproof sealing tape at the connection between the exterior walls of steel structure buildings and steel components, and combined with the steel wire mesh leveling layer, the waterproof failure problem caused by material deformation is solved, and efficient waterproofing effect is achieved.
Patent Information
- Application Number
- CN202510573268.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2025-08-01
AI Technical Summary
In the prior art, the waterproof design at the connection between the exterior walls of steel structure buildings and steel components has waterproof failure problems caused by material deformation, especially when the sealant is aging or cracking, it is prone to leakage.
Rock wool is used to fill the gaps, combine modified silicone building sealant and waterproof sealing belt, and combine with the wire mesh leveling layer to form a multi-layer sealing structure to adapt to the deformation of the steel components, and surface treatment is carried out through the cement mortar leveling layer.
Effectively prevent leakage, adapt to deformation of steel components, improve the waterproof effect of the exterior wall, and avoid waterproof failure caused by aging of sealant and cracking.
Smart Images
Figure CN120401675A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of waterproofing for the exterior walls of steel structure buildings, and particularly to a waterproof structure at the junction of the exterior wall with a paint finish on a steel structure building and a steel member. Background Art
[0002] The waterproof design of the exterior walls of prefabricated steel structure buildings has always been a key concern. The exterior walls are usually exterior walls with a paint finish. When the exterior wall is connected to a steel column or a steel beam (collectively referred to as a steel member), due to the connection of different materials, the waterproof design at the connection needs to consider the problem of waterproof failure caused by the deformation of different materials. In the prior art, a certain-width gap is usually reserved between the exterior wall and the steel member, a polyethylene foam rod is stuffed in the gap, and a sealant is applied to seal the outer edge end of the gap. For such a waterproof structure, once the outer sealant ages and cracks, leakage points will appear, and the waterproof effect is poor. Summary of the Invention
[0003] The present invention discloses a waterproof structure at the junction of the exterior wall with a paint finish on a steel structure building and a steel member, which takes into account the deformation problem of the steel structure itself and solves the problems of sealing, anti-leakage and cracking of the surface layer at the joint between the steel member and the exterior wall with a paint finish.
[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A waterproof structure at the junction of the exterior wall with a paint finish on a steel structure building and a steel member, comprising an exterior wall with a paint finish and a steel member. A gap is reserved between the side end face of the exterior wall with a paint finish and the steel member. Rock wool is filled in the gap. The indoor end of the gap is sealed with a modified silicone building sealant. At the outdoor end of the gap, a polyethylene rod is first stuffed, and then it is sealed with a modified silicone building sealant. A waterproof seal tape is pasted on the outdoor side of the gap to cover the end of the gap. The waterproof seal tape covers the surface of the modified silicone building sealant at the outdoor end. Cement mortar leveling layers are respectively arranged on the surfaces of the exterior wall with a paint finish and the steel member at the indoor end and the outdoor end of the gap. The cement mortar leveling layers respectively cover the waterproof seal tape and the modified silicone building sealant on the indoor side. Steel wire meshes are respectively arranged in the cement mortar leveling layers at both ends of the gap. The steel wire meshes cover the ends of the gap and extend to both sides of the gap.
[0005] Further, the width of the gap is 15 mm to 20 mm.
[0006] Further, the bulk density of the rock wool is not less than 80 kg / m³.
[0007] Further, the width of the waterproof seal tape is not less than 100 mm.
[0008] Further, the steel wire mesh uses a galvanized steel wire mesh.
[0009] Further, the specification of the wire mesh is φ0.6@10x10.
[0010] Further, the width by which the wire mesh extends from the gap end to both sides is not less than 250 mm.
[0011] Further, the painted exterior wall is composed of any one of autoclaved aerated concrete blocks, autoclaved aerated concrete slabs, concrete hollow blocks, shale bricks, ceramsite concrete blocks, and ceramsite concrete slabs.
[0012] Further, the steel member is a steel column or a steel beam.
[0013] In the waterproof design at the connection between the exterior wall and the steel member of the present invention, the deformation factor of the steel member is fully considered. An elastic and impact-resistant caulking material and a flexible waterproof sealing material are used in combination to seal the gap, and the surface leveling material is treated to prevent cracking. For the design of the waterproof structure at the joint of different materials, the method of the present invention is scientific and reasonable, can well adapt to the displacement and deformation of the steel member, and comprehensively improves the waterproof effect of the exterior wall. Description of the Drawings
[0014] Figure 1 It is a sectional view of the waterproof structure at the connection between the painted exterior wall and the steel beam in the embodiment; Figure 2 It is a plan view of the waterproof structure at the connection between the painted exterior wall and the steel column in the embodiment.
[0015] Reference Signs: 1, rock wool; 2, polyethylene rod; 3, modified silicone building sealant; 4, waterproof sealing tape; 5, wire mesh; 6, steel column; 7, painted exterior wall; 8, steel beam. Detailed Embodiments
[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention.
[0017] This embodiment discloses a waterproof structure at the joint between the painted exterior wall of a steel structure building and a steel member. Here, the steel member refers to the steel beam 8 or the steel column 6, and the painted exterior wall 7 here can be composed of any one of autoclaved aerated concrete blocks, autoclaved aerated concrete slabs, concrete hollow blocks, shale bricks, ceramsite concrete blocks, and ceramsite concrete slabs. For the waterproof structure at the connection between the painted exterior wall 7 and the steel member, reference can be made to Figure 1 and Figure 2 as shown.
[0018] During construction, a gap with a width of 15 mm to 20 mm should be reserved between the side connection end of the painted exterior wall 7 and the steel member. In this embodiment, the width of the gap is 15 mm. First, fill the gap with rock wool 1, and the bulk density of the rock wool 1 is not less than 80 kg / m³. The rock wool 1 is an elastic material, and using it for caulking can buffer the deformation of the steel member. Then, seal and level the gap with modified silicone building sealant 3 at the indoor end of the gap. At the outdoor end of the gap, first stuff a polyethylene rod 2, and then seal and level the gap with modified silicone building sealant 3. The polyethylene rod 2 has good impact resistance and sealing performance and can be used as the first sealing material at the outdoor end, while the modified silicone building sealant 3 has good waterproof performance and can adapt to displacement deformation and can be used as the indoor end sealing material and the second sealing material at the outdoor end. Next, cover the outdoor side of the gap with a waterproof sealing tape 4. The waterproof sealing tape 4 covers the modified silicone building sealant 3 at the outdoor end. The width of the waterproof sealing tape 4 should be greater than the width of the gap, preferably not less than 100 mm. In this embodiment, the width of the waterproof sealing tape 4 is 100 mm. The waterproof sealing tape 4 is an inorganic material with good flexibility and waterproof and breathable performance, and plastering construction can be directly carried out on its surface without additional process treatment. After the above construction is completed, level the surfaces at the indoor end and outdoor end of the gap between the painted exterior wall 7 and the steel member through a cement mortar leveling layer. The cement mortar leveling layer on the outdoor side covers the waterproof sealing tape 4, and the cement mortar leveling layer on the indoor side covers the modified silicone building sealant 3 on the indoor side. And lay an anti-cracking wire mesh 5 in the cement mortar leveling layer on each side. When setting the wire mesh 5, it is necessary to make the wire mesh 5 completely cover the end of the gap and extend a certain width to both sides of the gap. In this embodiment, the wire mesh 5 uses a galvanized wire mesh with a specification of φ0.6@10x10, and the width that the wire mesh 5 extends from the gap end to both sides is not less than 250 mm.
[0019] For the waterproof treatment at the connection between different materials in the present invention, the caulking materials (rock wool 1, polyethylene rod 2, modified silicone building sealant 3) and the waterproof sealing tape 4 used are all commercially available products. The present invention makes full use of the different performances of each material, combines them scientifically, and takes into account the deformation of the steel member itself to handle the sealing, anti-leakage of the joint between the steel member and other materials, and anti-cracking of the cement mortar leveling layer, so as to ensure that no leakage occurs at the joints of different exterior wall materials when other exterior wall structural layers such as waterproofing and painted finishes are made on this basis.
[0020] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A waterproof structure at the junction of a paint-finished exterior wall of a steel structure building and a steel member, comprising a paint-finished exterior wall and a steel member, with a gap reserved between the side end face of the paint-finished exterior wall and the steel member, characterized in that: Rock wool is filled in the gap. The indoor end of the gap is sealed with modified silicone building sealant. At the outdoor end of the gap, a polyethylene rod is first stuffed, and then it is sealed with modified silicone building sealant; the outdoor side of the gap is covered with a waterproof sealing tape at the end of the gap, and the waterproof sealing tape covers the surface of the modified silicone building sealant at the outdoor end; cement mortar leveling layers are respectively set on the surfaces of the painted finish exterior wall at the indoor and outdoor ends of the gap and the steel member. The cement mortar leveling layers respectively cover the waterproof sealing tape and the modified silicone building sealant on the indoor side. Steel wire meshes are respectively set in the cement mortar leveling layers at both ends of the gap. The steel wire meshes cover the ends of the gap and extend to both sides of the gap.
2. The waterproof structure at the junction of the exterior wall with a paint finish of a steel structure building and steel members according to claim 1, characterized in that: The width of the gap is 15 mm to 20 mm.
3. The waterproof structure at the junction of the exterior wall with a paint finish of a steel structure building and steel members according to claim 1, characterized in that: The bulk density of the rock wool is not less than 80 kg / m³.
4. The waterproof structure at the junction of the exterior wall with a paint finish of a steel structure building and steel members according to claim 1, characterized in that: The width of the waterproof sealing tape is not less than 100 mm.
5. The waterproof structure at the junction of the exterior wall with a paint finish of a steel structure building and steel members according to claim 1, characterized in that: The steel wire mesh uses galvanized steel wire mesh.
6. The waterproof structure at the junction of the exterior wall with a paint finish of a steel structure building and steel members according to claim 1, characterized in that: The specification of the steel wire mesh is φ0.6@10x10.
7. The waterproof structure at the junction of the exterior wall with a paint finish of a steel structure building and steel members according to claim 1, characterized in that: The width of the steel wire mesh extending from the end of the gap to both sides is not less than 250 mm.
8. The waterproof structure at the junction of the exterior wall with a paint finish of a steel structure building and steel members according to claim 1, characterized in that: The painted finish exterior wall is composed of any one of autoclaved aerated concrete blocks, autoclaved aerated concrete slabs, concrete hollow blocks, shale bricks, ceramsite concrete blocks, and ceramsite concrete slabs.
9. The waterproof structure at the junction of the painted exterior wall of a steel structure building and steel members according to claim 1, characterized in that: The steel member is a steel column or a steel beam.