Concrete self-waterproof structure of underground superimposed side wall

Abstract

The utility model provides a concrete self-waterproof structure of an underground superimposed side wall. The concrete self-waterproof structure comprises an enclosure structure, cement-based capillary crystalline composite cloth and a self-waterproof concrete inner wall. The cement-based capillary crystalline composite cloth is mounted on the enclosure structure; and the self-waterproof concrete inner wall is poured between the cement-based capillary crystalline composite cloth and the building surface layer. The structure is simple to install, does not need other equipment on site, is convenient to operate, and has good waterproof performance.

Description

Technical Field

[0001] The present application relates to the field of construction, and in particular to a concrete self-waterproof structure of an underground superimposed side wall. Background Art

[0002] With the development of urban construction, more and more projects involve underground space construction, especially in the fields of subways, pipe galleries, tunnels, etc. In order to improve economy and efficiency, the application of underground composite side walls is also increasing. The use of reinforced concrete continuous walls or interlocking piles as a part of the main body of the underground structure in underground composite walls can save resources and speed up the construction period. However, after the composite wall is overlapped with the enclosure structure and the inner wall, due to the steel bar connector in the middle, it is difficult for the waterproof layer to form a continuous and closed whole. In addition, the inner wall is easily constrained by the enclosure structure during the concrete hardening process, resulting in cracks, which is very unfavorable for the waterproofing of underground projects.

[0003] Thin-walled structures such as walls are prone to cracks, and about 80% of underground water seepage is caused by cracks. Ordinary waterproof layers such as waterproof membranes and coatings are difficult to function under such harsh working conditions as composite walls. Ordinary rigid waterproof layers are prone to cracking under such super-constrained structures. Utility Model Content

[0004] One of the purposes of the present application is to provide a concrete self-waterproof structure of an underground composite side wall to solve the problem of poor waterproof performance of existing underground composite walls.

[0005] The technical solution of this application is:

[0006] A concrete self-waterproof structure of an underground superimposed side wall comprises a retaining structure, a cement-based permeable crystallization composite cloth and a self-waterproof concrete inner wall; the cement-based permeable crystallization composite cloth is installed on the retaining structure; the self-waterproof concrete inner wall is cast between the cement-based permeable crystallization composite cloth and the building surface layer.

[0007] As a technical solution of the present application, the cement-based infiltration crystallization composite cloth includes a non-woven fabric layer and a three-dimensional fiber mesh layer; the non-woven fabric layer is wrapped around the periphery of the three-dimensional fiber mesh layer.

[0008] As a technical solution of the present application, a cement-based penetrating crystalline waterproof coating layer is sprayed on the outer surface of the non-woven fabric layer, and the interior of the three-dimensional fiber mesh layer is filled with a powdered cement-based penetrating crystalline coating layer.

[0009] As a technical solution of the present application, the thickness of the cement-based infiltration crystallization composite cloth is 4.8-5.2 mm.

[0010] As a technical solution of the present application, the thickness of the cement-based penetrating crystallization waterproof coating layer is 1.5 mm, and the thickness of the three-dimensional fiber mesh layer is 2 mm.

[0011] As a technical solution of the present application, the cement-based infiltration crystallization composite cloth is installed on the enclosure structure through a plurality of rivets.

[0012] As a technical solution of the present application, the enclosure structure includes an underground continuous wall or a row of piles.

[0013] Beneficial effects of this application:

[0014] In the concrete self-waterproof structure of the underground superimposed side wall of the present application, it can be directly installed through multiple rivets, no other equipment is required on site, it is simple and convenient to operate, and it saves time and effort. At the same time, the cement-based permeable crystallization composite cloth in the structure is rigid and flexible, and will not affect the co-stress of the enclosure structure and the self-waterproof concrete inner wall of the superimposed wall. In addition, the cement-based permeable crystallization waterproof coating layer on the inner and outer surfaces of the cement-based permeable crystallization composite cloth can repair the cracks generated by the adjacent enclosure structure and the self-waterproof concrete inner wall for waterproofing, and the powdered cement-based permeable crystallization coating layer filled inside the cement-based permeable crystallization composite cloth can provide continuous repair materials for cracks that may expand later, so that it can further improve the waterproofness of the structure. In addition, the inner wall of the structure adopts self-waterproof concrete, which can further reduce the possibility of cracks, thereby avoiding water seepage. Thus, the structure can comprehensively improve the waterproof function of the superimposed wall structure from many aspects through the waterproof operation of concrete self-waterproofing-crack repair-reserve repair trinity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of a concrete self-waterproof structure of an underground composite side wall provided in an embodiment of the present application;

[0017] Figure 2 Schematic diagram of the cement-based infiltration crystallization composite cloth provided in an embodiment of the present application.

[0018] Icons: 1-enclosing structure; 2-cement-based penetrating crystallization composite fabric; 3-self-waterproof concrete interior wall; 4-non-woven fabric layer; 5-three-dimensional fiber mesh layer; 6-cement-based penetrating crystallization waterproof coating layer; 7-powdered cement-based penetrating crystallization coating layer; 8-building surface layer. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0023] In addition, in the present application, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] Example:

[0027] Please refer to Figure 1 , with reference Figure 2 The present application provides a concrete self-waterproof structure of an underground superimposed side wall, which mainly includes a retaining structure 1, a cement-based permeable crystallization composite cloth 2 and a self-waterproof concrete inner wall 3; wherein the cement-based permeable crystallization composite cloth 2 is installed on the retaining structure 1; the self-waterproof concrete inner wall 3 is cast between the cement-based permeable crystallization composite cloth 2 and the building surface layer 8.

[0028] It should be noted that the enclosure structure 1 can be made of underground continuous walls or piles, and the waterproof concrete inner wall 3 is made of concrete with good waterproof performance. In addition, the cement-based permeable crystallization composite cloth 2 is installed on the enclosure structure 1 through multiple rivets, and its thickness is 4.8-5.2mm. It mainly includes a non-woven fabric layer 4 and a three-dimensional fiber mesh layer 5. The non-woven fabric layer 4 is wrapped on the periphery of the three-dimensional fiber mesh layer 5. The three-dimensional fiber mesh layer 5 constitutes the skeleton of the cement-based permeable crystallization composite cloth 2. The cement-based permeable crystallization composite cloth 2 with skeleton support is not only convenient for transportation and subsequent construction, but also conducive to spraying cement-based permeable crystallization coating and filling cement-based permeable crystallization powder. At the same time, a cement-based permeable crystallization waterproof coating layer 6 is sprayed on the outer surface of the non-woven fabric layer 4, and the interior of the three-dimensional fiber mesh layer 5 is filled with a powdered cement-based permeable crystallization coating layer 7. In addition, the thickness of the cement-based permeable crystallization waterproof coating layer 6 is 1.5mm, and the thickness of the three-dimensional fiber mesh layer 5 is 2mm.

[0029] Therefore, the use of a 4.8-5.2mm thick cement-based penetrating crystallization composite cloth 2, a 1.5mm thick cement-based penetrating crystallization waterproof coating layer 6, and a 2mm thick three-dimensional fiber mesh layer 5 can not only help improve the waterproof performance and repair performance of the entire structure, but also make the cement-based penetrating crystallization and non-woven fabric composite have the characteristics of combining rigidity and flexibility, without affecting the common force of the enclosing structure 1 and the self-waterproof concrete inner wall 3, and can also resist the constraints during the pouring and hardening process of the inner wall concrete.

[0030] Specifically, in this embodiment, the thickness of the cement-based infiltration crystallization composite cloth 2 can be 5 mm; in other embodiments, the thickness and material of the cement-based infiltration crystallization composite cloth 2 can also be designed accordingly according to the actual use conditions, and are not limited to the thickness and material in this embodiment. The cement-based infiltration crystallization waterproof coating on the upper and lower surfaces of the cement-based infiltration crystallization composite cloth 2 can respectively protect the water seepage generated by the enclosure structure 1 and the self-waterproof concrete inner wall 3, and also has the function of crack repair; in addition, the powder filled inside it serves as a reserve material to provide continuous repair materials during the crack widening and extension process.

[0031] In addition, it should be noted that the non-woven fabric layer 4 is made of non-woven fabric in the prior art, the three-dimensional fiber mesh layer 5 is made of fiber mesh in the prior art, the cement-based penetrating crystalline waterproof coating layer 6 is made of cement-based penetrating crystalline waterproof coating in the prior art, and the powdered cement-based penetrating crystalline coating layer 7 is made of powdered cement-based penetrating crystalline coating in the prior art.

[0032] The self-waterproof concrete inner wall 3 is a concrete wall with self-waterproof function by adding magnesium oxide expansion agent and fiber composite material, regulating hydration temperature rise and compensating concrete shrinkage. Since most underground concrete inner walls are ultra-long thin-walled structures, cracks are easily generated during the cement hardening process. Therefore, by adding magnesium oxide and fiber composite material and compensating shrinkage concrete, cracks of the inner wall can be avoided, thereby further improving its waterproof performance.

[0033] The construction method of the structure is:

[0034] Step 1: clean the surface layer of the enclosure structure 1 to ensure that the surface is flat and clean, and fill the uneven surface with plaster mortar;

[0035] Step 2: Use rivets to tightly fit the cement-based infiltration crystallization composite cloth 2 on the enclosure structure 1;

[0036] Step 3, supporting the self-waterproof concrete inner wall 3;

[0037] Step 4: prepare self-waterproof concrete and pour it on the formwork to form a self-waterproof concrete inner wall 3.

[0038] In summary, in the concrete self-waterproof structure of the underground superimposed side wall of the present application, it can be directly installed through multiple rivets, no other equipment is required on site, it is simple and convenient to operate, and it saves time and effort. At the same time, the cement-based permeable crystallization composite cloth 2 in the structure is rigid and flexible, and will not affect the co-stress of the enclosure structure 1 and the self-waterproof concrete inner wall 3 of the superimposed wall. In addition, the cement-based permeable crystallization waterproof coating layer 6 on the inner and outer surfaces of the cement-based permeable crystallization composite cloth 2 can repair the cracks generated by the adjacent enclosure structure 1 and the self-waterproof concrete inner wall 3 for waterproofing, and the powdered cement-based permeable crystallization coating layer 7 filled inside the cement-based permeable crystallization composite cloth 2 can provide continuous repair materials for cracks that may expand later, so that it can further improve the waterproofness of the structure. In addition, the inner wall of the structure adopts self-waterproof concrete, which can further reduce the possibility of cracks, thereby avoiding water seepage. Therefore, the structure can comprehensively improve the waterproof function of the superimposed wall structure from many aspects through the waterproof operation of concrete self-waterproofing-crack repair-reserve repair trinity.

[0039] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A concrete self-waterproof structure of underground superimposed side walls, characterized in that: It comprises a protective structure, a cement-based permeable crystallization composite cloth and a self-waterproof concrete inner wall; the cement-based permeable crystallization composite cloth is installed on the protective structure; and the self-waterproof concrete inner wall is cast between the cement-based permeable crystallization composite cloth and the building surface layer.

2. The concrete self-waterproof structure of underground superimposed side wall according to claim 1, characterized in that: The cement-based infiltration crystallization composite fabric comprises a non-woven fabric layer and a three-dimensional fiber mesh layer; the non-woven fabric layer is wrapped around the periphery of the three-dimensional fiber mesh layer.

3. The concrete self-waterproof structure of underground superimposed side wall according to claim 2, characterized in that: A cement-based penetrating crystallization waterproof coating layer is sprayed on the outer surface of the non-woven fabric layer, and a powdered cement-based penetrating crystallization coating layer is filled inside the three-dimensional fiber mesh layer.

4. The concrete self-waterproof structure of underground superimposed side wall according to claim 1, characterized in that: The thickness of the cement-based infiltration crystallization composite cloth is 4.8-5.2 mm.

5. The concrete self-waterproof structure of underground superimposed side wall according to claim 3, characterized in that: The thickness of the cement-based penetrating crystallization waterproof coating layer is 1.5 mm, and the thickness of the three-dimensional fiber mesh layer is 2 mm.

6. The concrete self-waterproof structure of underground superimposed side wall according to claim 1, characterized in that: The cement-based infiltration crystallization composite fabric is installed on the enclosure structure through a plurality of rivets.

7. The concrete self-waterproof structure of underground superimposed side wall according to claim 1, characterized in that: The enclosure structure includes an underground continuous wall or a row of piles.

Images