Water stop structure used between normal concrete and plastic concrete

Abstract

The utility model provides a waterstop structure used between normal concrete and plastic concrete, which comprises a normal concrete wall and a plastic concrete diaphragm wall, the plastic concrete diaphragm wall is arranged at the lower part of the normal concrete wall, a construction joint is arranged between the plastic concrete diaphragm wall and the normal concrete wall, and the plastic concrete diaphragm wall is arranged in the construction joint. The surface, located in the construction joint, of the plastic concrete diaphragm wall is a plane, a polyurethane adhesive layer is arranged on the plane, and L-shaped water stop strips are laid in the construction joint and on the polyurethane adhesive layer in the extending direction of the construction joint. The utility model has the beneficial effects that under the condition of ensuring that the plastic concrete wall is not subjected to any destructive finishing, the purpose of water stop of a construction joint or a structural joint is achieved, the construction efficiency and quality are improved, and meanwhile, the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy, in particular to a water-stop structure used between normal concrete and plastic concrete. Background Art

[0002] The on-site anti-seepage wall consists of a plastic concrete wall below the dam foundation and a normal rigid concrete thorn wall above ground. A waterstop is required in the construction joint between the main body of the plastic concrete anti-seepage wall and the normal concrete thorn wall to prevent leakage. If expansion waterstops were used for waterstopping, due to the project's heavy rainfall and abundant groundwater at the dam foundation, the expansion waterstops would expand upon contact with water, making them difficult to store and install on site. If not handled properly, the expansion process could end before the thorn wall is poured, creating the risk of leaks from a poorly sealed construction joint. If conventional PVC waterstop is used, since the casting top height of the plastic concrete anti-seepage wall is 2 meters higher than the design top height, it is necessary to chisel out the part higher than the design top height after the casting is completed, and then set an inverted V-shaped keyway on the top of the plastic concrete, and then implant the PVC waterstop into the set keyway, and then seal the keyway with epoxy mortar; since the 28-day strength of plastic concrete is only about 5 MPa, setting a keyway is likely to form a weak link, which in turn causes the wall to crack, and the keyway sealing effect of the epoxy mortar is also questionable, so both installing expansion waterstop strips and setting conventional PCV waterstops cannot achieve the ideal effect. Summary of the Invention

[0003] The problem to be solved by the utility model is to provide a water-stop structure used between normal concrete and plastic concrete, which overcomes the deficiencies in the prior art.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a water-stop structure for use between normal concrete and plastic concrete, comprising a normal concrete wall and a plastic concrete anti-seepage wall, the plastic concrete anti-seepage wall being located at the lower part of the normal concrete wall, a construction joint being provided between the plastic concrete anti-seepage wall and the normal concrete wall, the surface of the plastic concrete anti-seepage wall located in the construction joint being a plane, a polyurethane adhesive layer being provided on the plane, and an L-shaped water-stop strip being laid in the construction joint and on the polyurethane adhesive layer along the extension direction of the construction joint.

[0005] Optionally, the bottom of the L-shaped water stop strip is located in the polyurethane adhesive layer, and the portion of the L-shaped water stop strip other than the portion located in the polyurethane adhesive layer is located in the normal concrete wall.

[0006] Optionally, the L-shaped water stop strip is located in the middle of the normal concrete wall.

[0007] The advantages and positive effects of the utility model are: due to the adoption of the above technical solution, the purpose of water stopping construction joints or structural joints is achieved while ensuring that the plastic concrete wall is not subjected to any destructive repairs, thereby improving construction efficiency and quality and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the utility model;

[0009] Figure 2 is a schematic side cross-sectional view of a specific embodiment;

[0010] In the figure: 1. Normal concrete wall; 2. Plastic concrete anti-seepage wall; 3. Construction joint; 4. L-shaped water stop; 5. Polyurethane adhesive layer; 6. Cushion concrete. DETAILED DESCRIPTION

[0011] The present invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are intended solely to illustrate the present invention and are not intended to limit the present invention. In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can mean fixed, removable, or integral; mechanical or electrical; direct, indirect through an intermediary, or internal communication between two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0012] like Figure 1 、 2 As shown, the utility model provides a water-stop structure for use between normal concrete and plastic concrete, comprising a normal concrete wall 1 and a plastic concrete anti-seepage wall 2, wherein the plastic concrete anti-seepage wall 2 is located at the bottom of the normal concrete wall 1, and a construction joint 3 is provided between the plastic concrete anti-seepage wall 2 and the normal concrete wall 1, wherein the surface of the plastic concrete anti-seepage wall 2 located within the construction joint 3 is a plane having a polyurethane adhesive layer 5 on the plane, and an L-shaped water-stop strip 4 is laid within the construction joint 3 and on the polyurethane adhesive layer 5 along the extension direction of the construction joint 3.

[0013] The bottom of the L-shaped water stop strip 4 is located in the polyurethane adhesive layer 5 , and the portion of the L-shaped water stop strip 4 other than the portion located in the polyurethane adhesive layer 5 is located in the normal concrete wall 1 .

[0014] The L-shaped water stop strip is located in the middle of the normal concrete wall 1.

[0015] The construction method of the above structure is: the part where the water stop strip is required on the top of the plastic concrete wall 2 is leveled, and then polyurethane glue is applied after leveling ( NP 474), after applying the glue, press-fit the L-shaped PVC waterstop onto the glue surface to ensure a dense, gap-free interface. During construction, this structure achieves watertight sealing of construction joints or structural joints while ensuring that the plastic concrete wall 2 is not subjected to any destructive trimming, improving construction efficiency and quality while reducing costs.

[0016] The above embodiments of the present invention are described in detail. However, the above contents are only preferred embodiments of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A water-stop structure used between normal concrete and plastic concrete, characterized by: The invention comprises a normal concrete wall and a plastic concrete anti-seepage wall, wherein the plastic concrete anti-seepage wall is located at the lower part of the normal concrete wall, and a construction joint is provided between the plastic concrete anti-seepage wall and the normal concrete wall. The surface of the plastic concrete anti-seepage wall located in the construction joint is a plane, and a polyurethane adhesive layer is provided on the plane. An L-shaped water stop strip is laid in the construction joint and on the polyurethane adhesive layer along the extension direction of the construction joint.

2. The water-stop structure between normal concrete and plastic concrete according to claim 1, characterized in that: The bottom of the L-shaped water stop strip is located in the polyurethane adhesive layer, and the portion of the L-shaped water stop strip other than the portion located in the polyurethane adhesive layer is located in the normal concrete wall.

3. The water-stop structure between normal concrete and plastic concrete according to claim 2, characterized in that: The L-shaped water stop strip is located in the middle of the normal concrete wall.

Images