Waterproof structure of underground double-connecting wall

Abstract

The waterproof structure comprises an underground continuous outer wall and a reinforced concrete inner wall, a self-adhesive waterproof layer is laid along the inner side wall face of the underground continuous outer wall in an attached mode, an anti-permeability coating layer is arranged along the surface of the self-adhesive waterproof layer in a brushing mode, and the reinforced concrete inner wall is arranged along the surface of the anti-permeability coating layer in a pouring mode. The self-adhesive waterproof layers and the anti-permeability coating layers are adopted to form the two structural waterproof barrier layers of the underground continuous outer wall, and even if the underground continuous outer wall leaks water to the two structural waterproof barrier layers, the reinforced concrete inner wall is adopted for blocking the water seepage; water pressure balance between the underground continuous outer wall and the reinforced concrete inner wall can be kept, external water pressure liquid can be prevented from permeating into a basement building space through the underground continuous wall, the hidden danger of water seepage of the basement continuous wall is solved, and the waterproof construction quality of a basement can be ensured especially for projects with large foundation pit depth and complex surrounding environment.

Description

Technical Field

[0001] The utility model relates to the technical field of underground double-connected wall waterproof engineering, in particular to a waterproof structure of an underground double-connected wall. Background Art

[0002] During the construction of underground continuous walls, slag inclusions, cavities, and misalignment of cross steel plate joints will occur when pouring concrete, and these factors will inevitably reduce the anti-seepage performance of the underground continuous wall, and a waterproof layer cannot be set on the outside of the underground continuous wall. The ordinary waterproofing method is often to install perforated steel plates at the joints to add new seepage paths, and to perform waterproofing treatment on the indoor side of the underground continuous wall, spray cement-based waterproofing materials, polymer waterproof coatings, etc., and design a drainage system at the same time. However, for foundation pits with deeper depths and higher head pressures, concrete self-waterproofing and coating surface layers often have seepage and cannot meet the waterproofing requirements. Utility Model Content

[0003] The utility model aims to provide a waterproof structure of an underground double continuous wall, which is used to solve the problem of poor waterproof construction effect of underground continuous walls in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A waterproof structure of an underground double-connected wall, comprising:

[0006] Underground continuous exterior wall;

[0007] A self-adhesive waterproof layer is laid along the inner wall surface of the underground continuous outer wall;

[0008] An anti-seepage coating layer is applied along the surface of the self-adhesive waterproof layer;

[0009] The reinforced concrete inner wall is cast along the surface of the impermeability coating layer.

[0010] As a further solution of the utility model: the self-adhesive waterproof layer is a self-adhesive waterproof coiled material.

[0011] As a further solution of the utility model: the anti-seepage coating layer is polymer cement mortar.

[0012] As a further solution of the utility model: the coating thickness of the polymer cement mortar along the surface of the self-adhesive waterproof layer is 20 mm.

[0013] As a further solution of the utility model: the thickness of the reinforced concrete inner wall cast along the surface of the anti-permeability coating layer is 250 mm.

[0014] Beneficial effects of the utility model:

[0015] (1) The present application adopts a self-adhesive waterproof layer and an impermeable coating layer to form a structural waterproof barrier layer of two underground continuous outer walls. Even if water seeps from the underground continuous outer wall to the two structural waterproof barrier layers, the reinforced concrete inner wall is used to block the water seepage, thereby maintaining the water pressure balance between the underground continuous outer wall and the reinforced concrete inner wall, and preventing the underground continuous wall from infiltrating the external hydraulic fluid into the basement building space, thereby solving the hidden danger of water seepage in the basement continuous wall. Especially for projects with a large foundation pit depth and a complex surrounding environment, the waterproof construction quality of the basement can be ensured;

[0016] (2) The waterproof structure of the present application is simple in construction, highly flexible in construction, and has significant anti-seepage and sealing effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the underground continuous exterior wall facade construction structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the underground continuous exterior wall plane construction structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure between the underground continuous outer wall and the reinforced concrete inner wall of the utility model.

[0021] In the figure: 1. Underground continuous exterior wall; 2. Self-adhesive waterproof layer; 3. Anti-seepage coating layer; 4. Reinforced concrete interior wall. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; in the description of the present invention, "multiple" and "several" mean at least two, for example two, three, etc., unless otherwise clearly and specifically defined.

[0024] See also Figures 1 to 3As shown, the utility model is a waterproof structure of an underground double-connected wall, comprising an underground continuous outer wall 1, a self-adhesive waterproof layer 2, an impermeable coating layer 3 and a reinforced concrete inner wall 4, the self-adhesive waterproof layer 2 is laid along the inner wall surface of the underground continuous outer wall 1, the impermeable coating layer 3 is brushed along the surface of the self-adhesive waterproof layer 2, and the reinforced concrete inner wall 4 is cast along the surface of the impermeable coating layer 3.

[0025] During the construction of the waterproof structure of the present application, the basement components are constructed by the reverse construction method. First, the underground continuous outer wall 1 is constructed. During the earth excavation process, the self-adhesive waterproof layer 2 is laid on the inner wall surface of the underground continuous outer wall 1, and then the anti-seepage coating layer 3 is applied along the surface of the self-adhesive waterproof layer 2. Finally, the reinforced concrete inner wall 4 is cast and constructed along the surface of the anti-seepage coating layer 3. The present application adopts the self-adhesive waterproof layer 2 and the anti-seepage coating layer 3 to form two structural waterproof barrier layers of the underground continuous outer wall 1. Even if the underground continuous outer wall 1 seeps into the two structural waterproof barrier layers, the reinforced concrete inner wall 4 is used to block the seepage, which can maintain the water pressure balance between the underground continuous outer wall 1 and the reinforced concrete inner wall 4, and can prevent the underground continuous wall from infiltrating the external water pressure liquid into the basement building space, thereby solving the hidden danger of water seepage of the basement continuous wall, especially for projects with a large foundation pit depth and complex surrounding environment, and can ensure the quality of the basement waterproof construction.

[0026] In this specific embodiment, the self-adhesive waterproof layer 2 is a self-adhesive waterproof membrane. The self-adhesive waterproof membrane is used to lay along the inner wall of the underground continuous external wall 1 for easy construction. Even if slag inclusions, cavities, and misaligned cross steel plate joints appear in the underground continuous external wall 1 during pouring, the self-adhesive waterproof membrane laid in a close relationship can block the penetration of water into the construction defective parts of the underground continuous external wall 1. If any local damage occurs to the self-adhesive waterproof membrane, the water will be confined to a very small range and will not jump out. Even if individual leakage occurs, the leakage point will be consistent with the damage point, which is very easy to repair.

[0027] It should be understood that the self-adhesive waterproof layer 2 can be made of other adhesive panels to form a waterproof structural layer of the underground continuous exterior wall 1.

[0028] In this specific embodiment, the anti-seepage coating layer 3 is a polymer cement mortar, which is formed by mixing cement, aggregate and an organic polymer that can be dispersed in water. The polymer can be a homopolymer formed by polymerization of one monomer, or a copolymer formed by polymerization of two or more monomers. The polymer must form a film on the cement particles under environmental conditions and form a strong bond between the cement matrix and the aggregate. The polymer network must have the ability to prevent the occurrence of microcracks and prevent the expansion of cracks. When a layer of polymer cement mortar is applied along the surface of the self-adhesive waterproof layer 2, the self-adhesive waterproof layer 2 can be protected from damage during the construction of the reinforced concrete interior wall 4, and it also has a waterproof function.

[0029] It should be understood that the impermeability coating layer 3 may be made of other polymer coatings to form two waterproof structural layers of the underground continuous exterior wall 1 .

[0030] In this specific implementation manner, the coating thickness of the polymer cement mortar along the surface of the self-adhesive waterproof layer 2 is 20 mm.

[0031] In this specific implementation manner, the thickness of the reinforced concrete inner wall 4 cast along the surface of the anti-permeability coating layer 3 is 250 mm.

[0032] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A waterproof structure of an underground double-wall, characterized in that: include: Underground continuous exterior wall (1); A self-adhesive waterproof layer (2) is laid along the inner wall surface of the underground continuous outer wall (1); An anti-permeability coating layer (3) is applied along the surface of the self-adhesive waterproof layer (2); The reinforced concrete inner wall (4) is cast along the surface of the impermeability coating layer (3).

2. The waterproof structure of an underground double-wall according to claim 1, characterized in that: The self-adhesive waterproof layer (2) is a self-adhesive waterproof coiled material.

3. The waterproof structure of underground double-wall according to claim 1, characterized in that: The anti-permeability coating layer (3) is polymer cement mortar.

4. The waterproof structure of underground double-wall according to claim 3, characterized in that: The coating thickness of the polymer cement mortar along the surface of the self-adhesive waterproof layer (2) is 20 mm.

5. The waterproof structure of underground double-wall according to claim 1, characterized in that: The thickness of the reinforced concrete inner wall (4) cast along the surface of the impermeability coating layer (3) is 250 mm.

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