Waterproof structure for vertical joint of precast concrete stand plate in venue
By adopting a combined waterproof structure of the outer waterproof structure layer, hydrophobic cavity and inner waterproof structure layer in the vertical joints of the precast concrete stand slabs of the venue, the problems of poor waterproof performance, poor durability and high repair costs in the prior art are solved, and higher waterproof performance and shorter maintenance cycles are achieved.
Patent Information
- Application Number
- CN202421768297.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-24
AI Technical Summary
The prior art In the waterproof structure of vertical joints of precast concrete stand slabs in the venue, the waterproof performance is poor, the durability is poor, the easy to be stepped through, and the repair cost is high and the construction period is long.
A waterproof structure consisting of an outer waterproof structure layer, a hydrophobic cavity and an inner waterproof structure layer is adopted. Two waterproof channels are formed through the inner and outer waterproof structure layer to increase waterproof performance and durability, and drain water through the hydrophobic cavity to reduce the damage to the inner waterproof structure.
The waterproof performance, durability and structural strength of the vertical joints of the precast concrete stand slabs in the venue are improved, the probability of the waterproof structure being stepped through is reduced, and maintenance costs are reduced, and the maintenance cycle is short.
Smart Images
Figure CN222822558U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building engineering, in particular to a vertical joint waterproof structure of a prefabricated concrete stand slab in a stadium. Background Art
[0002] During the construction of precast concrete stands in large venues, waterproofing the vertical joints of the stands is a crucial link. The precast concrete stands in the venue are formed by the upper precast concrete stands and the lower precast concrete stands. The vertical joints of the two adjacent rows of precast concrete stands are between the upper precast concrete stands that are spliced together. The width of the vertical joints is generally 20 mm. The waterproof structure of the vertical joints is usually made of a single layer of waterproof sealant. The disadvantage is that over time, the waterproof sealant will age and have adhesion problems, which will lead to deterioration of the waterproof performance on the one hand, and on the other hand, it may be stepped on by spectators wearing high heels, resulting in deterioration of the waterproof performance. After the waterproof sealant is damaged, when it is replaced and repaired, the adhesion between the newly repaired waterproof material and the old waterproof material is poor, resulting in poor waterproof effect. If the entire vertical joint is reconstructed, it will lead to high repair costs and long construction period. Utility Model Content
[0003] The purpose of the utility model is to provide a vertical joint waterproof structure for precast concrete stand panels in a stadium to solve the problems of poor waterproof performance, poor durability, low strength, easy penetration, poor waterproof performance when repairing damaged parts with waterproof sealants, and high repair costs caused by re-constructing the entire vertical joint with waterproof sealants.
[0004] In order to solve the above technical problems, the technical solution provided by the utility model is: a vertical joint waterproof structure of precast concrete stand slabs in a stadium, comprising an inner waterproof structure layer and an outer waterproof structure layer which are filled in the vertical joints of two adjacent rows of precast concrete stand slabs in the stadium from the upper surface downward, and a hydrophobic cavity arranged between the inner and outer waterproof structure layers, the outer waterproof structure layer, the hydrophobic cavity and the inner waterproof structure layer are distributed in the vertical joints from top to bottom, the inner and outer waterproof structure layers both include a waterproof sealant layer and a waterproof backing layer in sequence from top to bottom, and the waterproof sealant layer of the outer waterproof structure layer is aligned with the upper surface of the precast concrete stand slabs in the stadium.
[0005] Furthermore, the utility model provides a waterproof structure for the vertical joints of precast concrete stand slabs in a stadium, wherein the inner and outer waterproof structural layers and the hydrophobic cavity extend along the length direction of the vertical joints of two adjacent rows of precast concrete stand slabs in the stadium to the vertical end surface, and the hydrophobic cavity has a downwardly inclined drainage outlet at the vertical end surface.
[0006] Furthermore, the utility model provides a vertical joint waterproof structure for precast concrete stand panels in a stadium, wherein the waterproof backing layer is a polyethylene rod.
[0007] Furthermore, in the vertical joint waterproof structure of the precast concrete stand slab of the stadium provided by the utility model, the waterproof sealant layer of the outer waterproof structure layer is a two-component epoxy adhesive.
[0008] Furthermore, in the vertical joint waterproof structure of the precast concrete stand slab of the stadium provided by the utility model, the waterproof sealant layer of the inner waterproof structure layer is silicone sealant.
[0009] Furthermore, in the vertical joint waterproof structure of the precast concrete stand slab of the stadium provided by the utility model, the thickness of the inner waterproof structure layer and the outer waterproof structure layer are the same, and the thickness of the waterproof sealant layer and the waterproof backing layer are the same.
[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0011] The utility model provides a vertical joint waterproof structure for precast concrete grandstand slabs in a stadium, which is composed of an outer waterproof structure layer, a hydrophobic cavity and an inner waterproof structure layer. Two waterproof layers are formed by the inner and outer waterproof structure layers, thereby improving the waterproof performance, durability and structural strength of the vertical joints of the precast concrete grandstand slabs in the stadium, thereby reducing the probability of the waterproof structure being stepped through by high heels. When the outer waterproof structure layer is aged or damaged, the inner waterproof structure layer is used for waterproofing, thereby improving the waterproof performance; when the outer waterproof structure layer is aged or damaged and water leakage occurs, the leaking water is gathered and discharged through the hydrophobic cavity, thereby reducing or avoiding the damage of the inner waterproof structure to the leaking water, improving the durability of the inner waterproof structure, thereby improving the waterproof performance; when the outer waterproof structure layer is aged or damaged, the outer waterproof structure layer is replaced and repaired, and when the adhesion at the junction of the new and old outer waterproof structure layers at the repair node deteriorates and affects the waterproof performance, the inner waterproof structure layer is used for waterproofing, and the water is drained through the hydrophobic cavity to improve the waterproof performance, avoiding the replacement of the waterproof structure of the entire vertical joint, while ensuring the waterproof performance. Reduce maintenance costs and have the effect of a short maintenance cycle. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the vertical joints of the precast concrete stand panels and their waterproof structure in perspective elevation;
[0013] Figure 2 It is an enlarged view of the cross section at AA;
[0014] As shown in the figure:
[0015] 100. Waterproof structure of construction joints, 110. Upper precast concrete stand slab, 120. Lower precast concrete stand slab;
[0016] 200, vertical joints;
[0017] 300. Vertical joint waterproof structure of precast concrete stand slabs in the stadium, 301. Waterproof sealant layer, 302. Waterproof backing layer, 303. Hydrophobic cavity, 304. Drain, 310. External waterproof structural layer, 320. Internal waterproof structural layer. DETAILED DESCRIPTION
[0018] The utility model is described in detail below in conjunction with the accompanying drawings: According to the following description, the advantages and features of the utility model will be more clearly understood. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.
[0019] Please refer to Figure 1 to Figure 2 The embodiment of the utility model provides a vertical joint waterproof structure 300 of a precast concrete stand slab in a stadium, comprising an inner waterproof structure layer 320 and an outer waterproof structure layer 310 which are filled in the vertical joint 200 of two adjacent rows of precast concrete stand slabs in the stadium from the upper surface of the precast concrete stand slab downward, and a hydrophobic cavity 303 arranged between the inner and outer waterproof structure layers 310. The outer waterproof structure layer 310, the hydrophobic cavity 303 and the inner waterproof structure layer 320 are distributed in the vertical joint 200 from top to bottom. The inner and outer waterproof structure layers both include a waterproof sealant layer 301 and a waterproof backing layer 302 in sequence from top to bottom. The waterproof sealant layer 301 of the outer waterproof structure layer 310 is aligned with the upper surface of the precast concrete stand slab in the stadium.
[0020] The precast concrete stand panels of the stadium can be assembled by upper precast concrete stand panels 110 and lower precast concrete stand panels 120. In order to improve the waterproof effect, the horizontal joints between the upper precast concrete stand panels 110 and the lower precast concrete stand panels 120 can be filled with polyethylene rods. At this time, the vertical joints 200 of two adjacent rows of precast concrete stand panels of the stadium refer to the vertical joints 200 of two adjacent rows of upper precast concrete stand panels 110. The precast concrete stand panels of the stadium can be other assembled structures.
[0021] The vertical joint waterproof structure 300 of the precast concrete stand slab in a stadium provided by the embodiment of the utility model is composed of an outer waterproof structure layer 310, a hydrophobic cavity 303 and an inner waterproof structure layer 320. Two waterproof layers are formed by the inner and outer waterproof structure layers, thereby improving the waterproof performance, durability and structural strength of the vertical joint 200 of the precast concrete stand slab in the stadium, thereby reducing the probability of the waterproof structure being stepped through by high heels. When the outer waterproof structure layer 310 is aged or damaged, waterproofing is performed through the inner waterproof structure layer 320, thereby improving the waterproof performance; when water leakage occurs when the outer waterproof structure layer 310 is aged or damaged, the leaking water is gathered and discharged through the hydrophobic cavity 303, thereby reducing or avoiding the damage of the inner waterproof structure to the leaking water, improving the durability of the inner waterproof structure, and thus improving the waterproof performance; when the outer waterproof structure layer 310 is aged or damaged, the outer waterproof structure layer 310 is replaced and repaired, and when the adhesion at the junction of the new and old outer waterproof structure layers 310 at the repair node deteriorates and affects the waterproof performance, waterproofing is performed through the inner waterproof structure layer 320, and drainage is performed through the hydrophobic cavity 303 to improve the waterproof performance, avoiding the replacement of the waterproof structure of the entire vertical joint 200, while ensuring the waterproof performance. Reduce maintenance costs and have the effect of a short maintenance cycle.
[0022] Please refer to Figure 1 In order to facilitate drainage, the vertical joint waterproof structure 300 of the precast concrete stand slabs of the stadium provided by the embodiment of the utility model, the inner and outer waterproof structural layers and the hydrophobic cavity 303 extend along the length direction of the vertical joint 200 of the two adjacent rows of precast concrete stand slabs of the stadium to the vertical end surface, and the hydrophobic cavity 303 has a downwardly inclined drainage port 304 at the vertical end surface. The vertical end surface refers to the vertical surface in the step surface of the two adjacent precast concrete stand slabs of the stadium, that is, Figure 1 The side where the drain outlet 304 is located.
[0023] In order to improve the waterproof performance, in the vertical joint waterproof structure 300 of the precast concrete stand slab of the stadium provided by the embodiment of the utility model, the waterproof backing layer 302 can be a polyethylene rod.
[0024] In order to improve the strength and reduce the probability of the waterproof sealant layer 301 of the outer waterproof structure layer 310 being stepped through by high heels, the vertical joint waterproof structure 300 of the precast concrete stand board of the stadium provided by the embodiment of the utility model, the waterproof sealant layer 301 of the outer waterproof structure layer 310 is a two-component epoxy adhesive. That is, an ultra-high modulus epoxy two-component MS high-strength building joint adhesive (HM) can be used to prevent being stepped through, thereby preventing the audience from falling.
[0025] In order to improve durability and adapt to the structural deformation of the vertical joint 200, the vertical joint waterproof structure 300 of the precast concrete stand slab in the stadium provided by the embodiment of the utility model, the waterproof sealant layer 301 of the inner waterproof structure layer 320 is silicone sealant, that is, low modulus JS-902LM two-component MS sealant (MS-2-25LM) can be used, which can withstand the changes in the joints caused by thermal expansion and contraction and vibration of the stand slab.
[0026] Please refer to Figure 2 In order to improve the structural stability of the waterproof structure 300, the vertical joint waterproof structure 300 of the precast concrete stand slab provided by the utility model embodiment has the same thickness of the inner waterproof structure layer 320 and the outer waterproof structure layer 310, and the same thickness of the waterproof sealant layer 301 and the waterproof backing layer 302. The thickness of each layer can be 10mm.
[0027] The present utility model is not limited to the above-mentioned specific implementation modes. Obviously, the above-mentioned embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the described embodiments of the present utility model belong to the scope of protection of the present utility model. Those skilled in the art can make other levels of modifications and changes to the present utility model. In this way, if these modifications and changes of the present utility model fall within the scope of the claims of the present utility model, the present utility model is also intended to include these changes and changes.
Claims
1. A vertical joint waterproof structure of a precast concrete stand slab in a stadium, characterized in that: It includes an inner waterproof structure layer and an outer waterproof structure layer which are filled in the vertical joints of two adjacent rows of precast concrete stand slabs along the upper surface of the stadium precast concrete stand slab downward, and a hydrophobic cavity arranged between the inner and outer waterproof structure layers. The outer waterproof structure layer, the hydrophobic cavity and the inner waterproof structure layer are distributed in the vertical joints from top to bottom. The inner and outer waterproof structure layers include a waterproof sealant layer and a waterproof backing layer in sequence from top to bottom. The waterproof sealant layer of the outer waterproof structure layer is aligned with the upper surface of the precast concrete stand slab.
2. The vertical joint waterproof structure of the precast concrete stand slab of the stadium according to claim 1 is characterized in that: The inner and outer waterproof structural layers and the hydrophobic cavity extend along the length direction of the vertical joints of the precast concrete stand panels of two adjacent rows of venues to the vertical end surface, and the hydrophobic cavity has a downwardly inclined drainage outlet at the vertical end surface.
3. The vertical joint waterproof structure of the precast concrete stand slab of the stadium according to claim 1 is characterized in that: The waterproof backing layer is a polyethylene rod.
4. The vertical joint waterproof structure of the precast concrete stand slab of the stadium according to claim 1 is characterized in that: The waterproof sealant layer of the outer waterproof structural layer is a two-component epoxy adhesive.
5. The vertical joint waterproof structure of the precast concrete stand slab of the stadium according to claim 1 is characterized in that: The waterproof sealant layer of the inner waterproof structure layer is silicone sealant.
6. The vertical joint waterproof structure of the precast concrete stand slab of the stadium according to claim 1 is characterized in that: The inner waterproof structure layer and the outer waterproof structure layer have the same thickness, and the waterproof sealant layer and the waterproof backing layer have the same thickness.