A wall structure at the waterproof end of an underground building

Abstract

The utility model provides a wall structure at the waterproof end of an underground building, including a basement structure body, a concrete counter-ridge is arranged above the basement structure body, U-shaped stirrups and horizontal longitudinal bars are arranged in the concrete counter-ridge, the upper part of the concrete counter-ridge is the outer masonry wall of the above-ground building, a waterproof roll is arranged on the outside of the basement structure body, the top of the waterproof roll is flush with the top of the concrete counter-ridge, and an insulation layer and an outer decorative layer are arranged on the outside of the waterproof roll, and the height of the insulation layer and the outer decorative layer are adapted to the outer masonry wall of the above-ground building. The utility model utilizes the high bonding degree between the waterproof roll and the concrete, and the friction bond between the structure of the expansion screw itself and the reinforced concrete layer to better fix the galvanized metal strip and prevent the waterproof roll from falling off. By setting the concrete counter-ridge, the anti-seepage requirements of the building are met, the purpose of waterproofing is achieved, and the construction workload can be greatly reduced, which can speed up the construction progress.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a wall structure at a waterproof end of an underground building. Background Art

[0002] The waterproofing project of underground buildings is a systematic project with strong comprehensiveness and practicality. Among the many factors involved, the construction technology requirements of waterproofing projects are relatively high and the construction difficulty is relatively large. This puts higher requirements on the construction of building basement waterproofing projects, and the waterproofing end method is more important. If it falls off or the waterproof membrane is not tightly connected to the wall, water will flow back into the wall, which can easily cause leakage, seepage, and wall cracking. Once water seeps into the outer wall, it cannot be repaired from the root, affecting the durability of the building structure and posing a safety hazard. Against this background, the industry is in urgent need of a simpler and more durable wall structure for the waterproofing end of underground buildings to improve construction efficiency and reduce later maintenance.

[0003] The National Building Standard Atlas "Waterproof Structure of Underground Buildings" 10J301 points out that the end of the waterproof layer is on the concrete outer wall of the basement. Existing patents such as CN206091106U underground side wall waterproof end structure use two layers of waterproof membranes with different thicknesses to ensure the strength of the waterproof membrane and use layer-by-layer leak-proofing to reduce the potential leakage of the membrane joints. The end of the waterproof layer is first sealed with a metal strip, and then the sealant is poured for further sealing. The layer-by-layer progressive method has a good waterproof effect, but no measures are taken for the wall itself, and it is still impossible to guarantee whether the building body itself has its own waterproofness once the waterproof material fails. Utility Model Content

[0004] According to the technical problems raised above, a wall structure for waterproofing ends of underground buildings is provided, which can effectively solve the potential safety hazards in the above-mentioned background technology and affect the service life of the main building. A reinforced concrete wall with the same width as the outer wall of the above-ground building is adopted, which is a simple implementation plan for improving the durability of the components. It effectively solves the problems of water leakage, water seepage and wall cracking caused by the loose bonding between the waterproof membrane and the block wall, and can speed up the construction progress, improve the construction quality and the durability of the building. The technical means adopted by the utility model are as follows:

[0005] A wall structure at the waterproof end of an underground building comprises a basement structure body, a concrete counter-slope is arranged above the basement structure body, U-shaped stirrups and horizontal longitudinal reinforcements are arranged in the concrete counter-slope, the upper part of the concrete counter-slope is the outer masonry wall of the above-ground building, a waterproof membrane is arranged on the outside of the basement structure body, the top of the waterproof membrane is flush with the top of the concrete counter-slope, an insulation layer and an outer decorative layer are arranged on the outside of the waterproof membrane, and the heights of the insulation layer and the outer decorative layer are adapted to the outer masonry wall of the above-ground building.

[0006] Furthermore, the waterproof coiled material is fixed to the outer wall of the concrete counter-ridge by expansion screws and galvanized metal strips.

[0007] Furthermore, the connection between the waterproof membrane and the concrete counter-ridge is sealed by sealing paste.

[0008] Furthermore, the U-shaped stirrup is an inverted U-shaped structure, and its bottom extends into the top plate of the underground building by a preset distance.

[0009] The utility model has the following advantages: compared with the practice in the national standard atlas, the utility model adopts on-site cast concrete walls to replace masonry walls of the same height, thereby increasing the adhesion between the waterproof membrane and the main body of the building, and utilizing the structure of the reinforced concrete itself and the expansion screws to generate frictional bonding force, thereby better fixing the galvanized metal strips, preventing the waterproof membrane from falling off due to the expansion and contraction of different materials, and extending the service life of the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0011] Figure 1 It is a vertical cross-sectional schematic diagram of the overall structure of the utility model.

[0012] In the figure: 1. Sealing paste; 2. Expansion screws, galvanized metal strips; 3. External insulation board and external decorative layer; 4. Waterproof membrane; 5. Main body of basement structure; 6. Masonry exterior wall of above-ground building; 7. Concrete counter-slope; 8. Horizontal longitudinal reinforcement; 9. U-shaped stirrups. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment 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.

[0014] like Figure 1 As shown, the embodiment of the utility model discloses a wall structure at the waterproof end of an underground building, including a basement structure body 5, a concrete counter-ridge 7 is arranged above the basement structure body, U-shaped stirrups 9 and horizontal longitudinal bars 8 are arranged in the concrete counter-ridge, the upper part of the concrete counter-ridge is the outer wall 6 of the above-ground building masonry, a waterproof roll 4 is arranged outside the basement structure body, the top of the waterproof roll is flush with the top of the concrete counter-ridge, and an insulation layer and an outer decorative layer 3 are arranged outside the waterproof roll, and the height of the insulation layer and the outer decorative layer are adapted to the outer wall of the above-ground building masonry. When pouring the basement main structure, the concrete wall can be poured together with it, and formed at one time, and there will be no cracking caused by the difference between the two materials, which can greatly reduce the construction workload and speed up the construction progress.

[0015] By adjusting the mix ratio of concrete or adding admixtures, the density, impermeability and corrosion resistance of concrete can be improved to meet the anti-seepage requirements of the building, achieve the purpose of waterproofing, and reduce water seepage caused by siphon effect caused by capillary channels in the masonry.

[0016] Furthermore, the waterproof membrane is fixed to the outer wall of the concrete counter-ridge by expansion screws and a galvanized metal strip 2 .

[0017] Furthermore, the connection between the waterproof membrane and the concrete counter-ridge is sealed by a sealing paste 1.

[0018] The U-shaped stirrups 9 and horizontal longitudinal bars are used to improve the connection strength between the concrete counter-slope and the main body of the basement structure. Furthermore, the U-shaped stirrups are inverted U-shaped structures, and their bottoms extend into the top plate of the underground building by a preset distance. The horizontal longitudinal bars are used to form a mesh reinforcement structure. In this embodiment, there are three bars on the top of the pier and one on each side.

[0019] The utility model sets a C20 fine stone concrete counter-ridge with the same width as the wall on the ground, and is equipped with U-shaped stirrups and horizontal longitudinal reinforcements. A waterproof membrane is then pasted on the outside to the same height as the concrete counter-ridge, and is nailed with expansion screws and galvanized metal strips, and sealed with sealing paste. The high adhesion between the waterproof membrane and the concrete, and the friction and bond force generated by the structure of the expansion screws themselves and the reinforced concrete layer can be used to better fix the galvanized metal strip, prevent the waterproof membrane from falling off, and extend the service life of the components. At the same time, through the compactness, impermeability, corrosion resistance and other properties of the concrete, the impermeability requirements of the building are met, the purpose of waterproofing is achieved, and the construction workload can be greatly reduced, and the construction progress can be accelerated.

[0020] The specific construction process of this utility model is as follows:

[0021] (1) When the height difference between the underground building top plate 5 and the outdoor floor is less than 500mm, a concrete counter-embankment 7 with the same width as the wall shall be set on the masonry outer wall 6 of the above-ground building. The concrete strength grade shall be C20 fine stone concrete, and the height of the counter-embankment shall be 500mm higher than the outdoor floor. U-shaped stirrups shall be provided inside and extend 300mm into the underground building top plate; horizontal longitudinal reinforcements shall be set, including 3 at the top of the pier and one on each side.

[0022] (2) After the concrete counter-bend is poured, clean it up and apply the waterproof membrane to the same height as the concrete wall. Use expansion screws and galvanized metal strips to nail it firmly and seal it with sealant.

[0023] (4) The waterproof membrane is protected by cement mortar and has an insulation layer and an external decorative layer.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A wall structure at the waterproof end of an underground building, characterized in that: It includes a basement structure body, a concrete counter-slope is arranged above the basement structure body, U-shaped stirrups and horizontal longitudinal bars are arranged in the concrete counter-slope, the upper part of the concrete counter-slope is the outer masonry wall of the above-ground building, a waterproof membrane is arranged on the outside of the basement structure body, the top of the waterproof membrane is flush with the top of the concrete counter-slope, an insulation layer and an outer decorative layer are arranged on the outside of the waterproof membrane, and the heights of the insulation layer and the outer decorative layer are adapted to the outer masonry wall of the above-ground building.

2. The wall structure at the waterproof end of an underground building according to claim 1, characterized in that: The waterproof coiled material is fixed to the outer wall of the concrete counter-embankment through expansion screws and galvanized metal strips.

3. The wall structure at the waterproof end of an underground building according to claim 1 or 2, characterized in that: The connection between the waterproof coiled material and the concrete counter-slope is sealed by sealing paste.

4. The wall structure at the waterproof end of an underground building according to claim 1, characterized in that: The U-shaped stirrup is an inverted U-shaped structure, and its bottom extends into the top plate of the underground building by a preset distance.

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