Waterproof structure for vertical construction joint of underground roof structure
By using embedded steel-edged rubber waterstops and concrete interface agents at the construction joints of the underground roof structure, the waterproofing problem of the construction joints was solved, the waterproofing performance and structural durability were enhanced, and the location of the construction joints was facilitated.
Patent Information
- Application Number
- CN202422994751.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-05
AI Technical Summary
In the long term, the construction joints of existing underground roof structures are prone to degradation of the crack resistance and impermeability of the concrete self-waterproofing layer, leading to leakage. Furthermore, the location of the construction joints is difficult to pinpoint quickly.
The waterproof performance is enhanced by combining the embedded steel-edged rubber waterstop with the concrete interface agent, the waterproof structure inside the slab, the seepage prevention structure on the slab surface, and the waterproof reinforcement layer. The location of the construction joint is marked by the upward protrusion of the seepage prevention structure on the slab surface.
It effectively blocks seepage channels, enhances structural safety and durability, clarifies the location of construction joints, and facilitates maintenance.
Smart Images
Figure CN223577176U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of construction joint technology, and in particular to a waterproof structure for vertical construction joints in underground roof slab structures. Background Technology
[0002] Construction joints refer to the joints formed between concrete poured in stages due to design requirements or construction needs. Waterproofing construction joints in underground structures is crucial for ensuring durability and normal operational performance.
[0003] Currently, construction joints mostly rely on self-waterproofing concrete. However, during long-term use, the crack resistance and impermeability of the self-waterproofing concrete layer inevitably deteriorate, leading to leakage. After the building is put into use, since the location of the construction joint is not clearly marked during construction, it is difficult to quickly locate the source of leakage if leakage occurs at the construction joint. Utility Model Content
[0004] Therefore, it is necessary to provide a waterproofing structure for vertical construction joints in underground roof slab structures to overcome the defects mentioned in the background art.
[0005] A waterproofing structure for vertical construction joints in an underground roof slab includes a panel structure. The construction joint and the structures on both sides of the panel structure are provided with an internal waterproofing structure arranged along the length of the construction joint. The two sides of the internal waterproofing structure extend obliquely upward. The top of the panel structure is provided with a surface waterproofing structure. A first waterproofing reinforcement layer is provided between the surface waterproofing structure and the construction joint and is arranged along the length of the construction joint. The surface waterproofing structure protrudes upward at the corresponding position of the first waterproofing reinforcement layer.
[0006] As a preferred embodiment of the waterproofing structure for vertical construction joints in the underground roof slab structure of this utility model, the waterproofing structure inside the slab includes a centrally embedded steel-edged rubber waterstop and a concrete interface agent. The central part of the centrally embedded steel-edged rubber waterstop is located inside the construction joint, and its ends are located inside the structures on both sides of the construction joint. The concrete interface agent is applied to the connection surface between the structures on both sides of the construction joint and the construction joint.
[0007] As a preferred embodiment of the waterproofing structure for vertical construction joints in the underground roof slab structure of this utility model, the angle between the end of the embedded steel-edged rubber waterstop and the horizontal plane is between 15 and 20 degrees.
[0008] As a preferred embodiment of the waterproofing structure for vertical construction joints in the underground roof slab structure of this utility model, the embedded steel-edged rubber waterstop includes multiple types, and adjacent embedded steel-edged rubber waterstops are interconnected through hot vulcanized butt joints.
[0009] As a preferred embodiment of the waterproofing structure for vertical construction joints of underground roof slab structures in this utility model, the seepage-proof structure of the slab surface includes a waterproof layer, a second waterproof reinforcement layer, and an isolation layer arranged sequentially from bottom to top.
[0010] As a preferred embodiment of the waterproofing structure for vertical construction joints in the underground roof slab structure of this utility model, grouting pipes are provided inside the structures on both sides of the construction joint, and the surface of the grouting pipes is provided with water-swellable sealing adhesive.
[0011] The beneficial effects of this utility model are:
[0012] This utility model effectively enhances the waterproof performance of weak points, blocks seepage channels, and improves structural safety and durability through the arrangement of the internal waterproof structure, the surface seepage prevention structure, and the first waterproof reinforcement layer. The surface seepage prevention structure protrudes upward at the position corresponding to the construction joint, which can clearly mark the location of the construction joint and facilitate construction and maintenance. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a cross-sectional structural diagram of the waterproof structure in the embodiments of this application;
[0015] Explanation of reference numerals in the attached figures:
[0016] 1. Panel structure;
[0017] 2. First waterproof reinforcement layer;
[0018] 3. Embedded steel-edged rubber waterstop;
[0019] 4. Concrete interface agent;
[0020] 5. Waterproof layer;
[0021] 6. Second waterproof reinforcement layer;
[0022] 7. Isolation layer;
[0023] 8. Grouting pipe. Detailed Implementation
[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0025] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0028] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0029] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0030] Example
[0031] This embodiment provides a waterproofing structure for vertical construction joints in underground roof slab structures, such as... Figure 1 As shown, it includes a panel structure 1, an internal waterproof structure disposed inside the panel structure 1, and a surface waterproof structure disposed on the top surface of the panel structure 1. A first waterproof reinforcement layer 2 is provided between the internal waterproof structure and the surface waterproof structure to enhance the waterproof effect and for positioning.
[0032] The panel structure 1 includes a construction joint and structures on both sides thereof. The construction joint is made of post-cast concrete, and the structures on both sides are made of pre-cast concrete.
[0033] The waterproof structure inside the slab includes a centrally embedded steel-edged rubber waterstop 3 and a concrete interface agent 4. The central part of the centrally embedded steel-edged rubber waterstop 3 is located inside the construction joint, and its ends are located inside the structures on both sides of the construction joint and extend obliquely upward. The concrete interface agent 4 is applied to the connection surface between the structures on both sides of the construction joint and the construction joint.
[0034] In this embodiment, the embedded steel-edged rubber waterstop 3 includes a rubber section and steel plates on both sides thereof. It is connected to the structural members within the structures on both sides via the steel plates. When the thickness of the panel structure 1 is no more than 50 cm, the embedded steel-edged rubber waterstop 3 is positioned at the centerline of the structural lining. The thickness difference between the two sides of the embedded steel-edged rubber waterstop 3 should not exceed 1 cm. The longitudinal centerline of the embedded steel-edged rubber waterstop 3 is aligned with the surface of the construction joint, and the distance difference should not exceed 1 cm. When the thickness of the panel structure 1 is greater than 50 cm, the concrete thickness on the side of the waterstop closer to the construction workers is controlled at 25-30 cm to facilitate subsequent maintenance of the waterstop.
[0035] In this embodiment, the embedded steel-edged rubber waterstop 3 includes multiple types, and adjacent embedded steel-edged rubber waterstops 3 are connected to each other through hot vulcanized butt joints to improve waterproof performance.
[0036] In this embodiment, the angle between the end of the embedded steel-edged rubber waterstop 3 and the horizontal plane is between 15 and 20 degrees to enhance the waterproofing effect.
[0037] The construction joint is provided with grouting pipes 8 on both sides of the structure. The surface of the grouting pipes 8 is provided with water-swellable sealing adhesive to facilitate the pouring into the construction joint.
[0038] The first waterproof reinforcement layer 2 is laid close to the panel structure 1 and is laid along the construction joint. It covers the construction joint and the nearby structures on both sides to prevent water that has penetrated into the anti-seepage structure of the panel from entering the panel structure 1.
[0039] The anti-seepage structure of the slab includes a waterproof layer 5, a second waterproof reinforcement layer 6 and an isolation layer 7 arranged sequentially from bottom to top. The anti-seepage structure of the slab protrudes upward at the position corresponding to the first waterproof reinforcement layer 2 to facilitate the positioning of construction joints.
[0040] This utility model, through the arrangement of the internal waterproof structure, the surface seepage prevention structure, and the first waterproof reinforcement layer 2, can effectively enhance the waterproof performance of weak points, block seepage channels, and enhance structural safety and durability; the surface seepage prevention structure protrudes upward at the position corresponding to the construction joint, which can clearly mark the location of the construction joint and facilitate construction and maintenance.
[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0042] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A waterproofing structure for vertical construction joints in underground roof slab structures, comprising a panel structure, characterized in that: The panel structure has an internal waterproof structure installed inside the construction joint and the structures on both sides, which extends obliquely upward on both sides. The top of the panel structure has a surface waterproof structure, and a first waterproof reinforcement layer is installed between the surface waterproof structure and the construction joint, which is installed along the length of the construction joint. The surface waterproof structure and the first waterproof reinforcement layer protrude upward at the corresponding positions.
2. The waterproofing structure for vertical construction joints of underground roof slabs according to claim 1, characterized in that, The waterproof structure inside the slab includes a centrally embedded steel-edged rubber waterstop and a concrete interface agent. The central part of the centrally embedded steel-edged rubber waterstop is located inside the construction joint, and its ends are located inside the structures on both sides of the construction joint. The concrete interface agent is applied to the connection surface between the structures on both sides of the construction joint and the construction joint.
3. The waterproofing structure for vertical construction joints of underground roof slabs according to claim 2, characterized in that, The angle between the end of the embedded steel-edged rubber waterstop and the horizontal plane is between 15 and 20 degrees.
4. The waterproofing structure for vertical construction joints of underground roof slabs according to claim 3, characterized in that, The embedded steel-edged rubber waterstop includes multiple types, and adjacent embedded steel-edged rubber waterstops are connected to each other through hot vulcanized butt joints.
5. The waterproofing structure for vertical construction joints of underground roof slabs according to claim 1, characterized in that, The anti-seepage structure of the panel includes a waterproof layer, a second waterproof reinforcement layer, and an isolation layer arranged sequentially from bottom to top.
6. The waterproofing structure for vertical construction joints of underground roof slabs according to claim 1, characterized in that, Grouting pipes are installed inside the structures on both sides of the construction joint, and the surface of the grouting pipes is covered with water-swellable sealing adhesive.