Anti-seepage and anti-floating structure based on high-water-level area basement raft

Abstract

The utility model discloses an anti-seepage and anti-floating structure based on a high-water-level area basement raft. The anti-seepage and anti-floating structure comprises drainage mechanisms arranged on the lower portion of the raft, the side portion of a bearing platform and the lower portion of a cushion layer. The drainage mechanism comprises a plurality of C-shaped drainage plates arranged side by side, C-shaped connecting plates are arranged at the connecting positions of the raft plates and the bearing platform, the two ends of each C-shaped connecting plate abut against the convex faces of the adjacent C-shaped drainage plates respectively, waterproof coating layers are arranged on the concave faces of the C-shaped drainage plates and the concave faces of the C-shaped connecting plates and make contact with foundation soil, and water diversion corners are arranged at the two ends of each C-shaped drainage plate. The water diversion corners of every two adjacent C-shaped drainage plates are tightly attached to each other. By arranging the C-shaped drainage plates, water in foundation soil can be conveniently divided into grids, the water on the C-shaped drainage plates is guided to the water diversion corners, then water flow can conveniently permeate into the foundation soil downwards more quickly after being gathered, the water flow is prevented from being gathered on the lower portion of the raft, and meanwhile the shearing resistance, the anti-seepage force and the anti-buoyancy force of the raft are improved.

Description

Technical Field

[0001] This utility model belongs to the field of basement raft foundation construction technology, specifically relating to a seepage-proof and anti-buoyancy structure for basement raft foundations in high-water-level areas. Background Technology

[0002] The basement floor slab is located in the foundation pit and is generally composed of raft slab, pile cap, pile foundation, etc. In areas with high groundwater levels or areas with sudden heavy rain in extreme weather, if the basement floor slab is soaked for a long time above the design water level, it is prone to irreversible damage such as deformation, cracking, and water seepage. In severe cases, it may cause structural safety problems and affect the overall service life of the building.

[0003] Currently, methods to address seepage, leakage, and cracking in basement slabs include installing anti-buoyancy piles, increasing the reinforcement ratio of the slab steel bars, thickening the concrete slab, and adding more layers of waterproof membrane. However, these methods are costly to construct, and in areas with high groundwater levels, such as the spring rainy season in southern China, localized leakage and dampness on walls and floors can still occur. Therefore, a simple and easy-to-construct seepage-proof and anti-buoyancy structure for basement raft slabs is needed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a seepage-proof and anti-buoyancy structure for basement raft slabs in high water level areas, which addresses the shortcomings of the prior art. The structure is simple, the design is reasonable, and the practicality is strong. By setting C-shaped drainage boards, it is easy to divide the water in the foundation soil into sections and guide the water on the C-shaped drainage boards to the water inlet corners, so that the water flow can converge and seep into the foundation soil more quickly, avoiding accumulation at the bottom of the raft slab. At the same time, it also improves the shear strength, seepage resistance, and buoyancy resistance of the raft slab.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a seepage-proof and anti-buoyancy structure based on a basement raft slab in a high water level area, wherein a raft slab is arranged around the foundation, a cushion layer is arranged under the foundation, and a pile foundation is arranged under the cushion layer; the feature is that it includes a drainage mechanism arranged under the raft slab, the side of the foundation, and the cushion layer.

[0006] The drainage mechanism includes multiple C-shaped drainage boards arranged side by side. A C-shaped connecting plate is provided at the connection between the raft and the foundation. The two ends of the C-shaped connecting plate abut against the convex surfaces of the adjacent C-shaped drainage boards. A waterproof coating layer is provided on the concave surfaces of the C-shaped drainage boards and the C-shaped connecting plate and is in contact with the foundation soil. Both ends of the C-shaped drainage boards are provided with water-guiding angles, and the water-guiding angles of two adjacent C-shaped drainage boards are in close contact with each other.

[0007] The above-mentioned seepage-proof and anti-buoyancy structure based on the basement raft slab in high water level areas is characterized in that: the C-shaped drainage board and the C-shaped connecting plate are both semi-circular plates.

[0008] The above-mentioned seepage-proof and buoyancy-resistant structure for basement raft slabs in high-water-level areas is characterized in that: a filling layer is provided between the C-shaped drainage board and the raft slab, the foundation and the cushion layer.

[0009] The above-mentioned seepage-proof and anti-buoyancy structure for basement raft slabs in high water level areas is characterized in that: a waterproof membrane layer is provided on the side of the raft slab and the foundation near the filling layer, and the waterproof membrane layer is located on the upper part of the filling layer.

[0010] This utility model has the following advantages compared with the prior art:

[0011] 1. This utility model is simple and quick to operate. By setting C-shaped drainage boards and C-shaped connecting plates, it is easy to divide the water in the foundation soil into sections at the bottom of each C-shaped drainage board, thus avoiding the accumulation of groundwater. Moreover, the open ends of the C-shaped drainage boards and C-shaped connecting plates face the foundation soil and are inserted into the foundation soil at both ends, which improves the shear strength of the raft slab. The contact area between the C-shaped drainage boards and C-shaped connecting plates and the foundation soil is also larger than that of traditional raft slabs, which improves the buoyancy resistance and makes it highly practical.

[0012] 2. By setting a water-guiding angle, this utility model facilitates the guidance of water on the C-shaped drainage board to the water-guiding angle, increasing the weight of the water at the water-guiding angle, thereby facilitating the water flow to converge and seep into the foundation soil more quickly, avoiding accumulation at the bottom of the raft.

[0013] 3. This utility model provides a waterproof coating layer and a waterproof membrane layer on the concave surface of the C-shaped drainage board and C-shaped connecting plate, which facilitates a double waterproofing effect and enhances the seepage resistance of the raft slab and foundation in high water level areas.

[0014] In summary, this utility model has a simple structure, reasonable design, and strong practicality. By setting up a C-shaped drainage board, it is easy to divide the water in the foundation soil into sections and guide the water on the C-shaped drainage board to the water inlet corner, so that the water flow can converge and seep into the foundation soil more quickly, avoiding accumulation at the bottom of the raft slab. At the same time, it also improves the shear strength, impermeability, and buoyancy resistance of the raft slab.

[0015] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 for Figure 1 Enlarged view of point A.

[0018] Figure 3 This is a schematic diagram of the C-type drainage board of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1-Pile cap; 2-Raft slab; 3-Subbase;

[0021] 4-Pile foundation; 5-Waterproof membrane layer; 6-Infill layer;

[0022] 7-Type C drainage board; 8-Type C connecting plate; 9-Water inlet angle. Detailed Implementation

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, a raft foundation 2 is arranged around the foundation 1, a cushion layer 3 is arranged at the bottom of the foundation 1, and a pile foundation 4 is arranged at the bottom of the cushion layer 3. This utility model includes a drainage mechanism arranged at the bottom of the raft foundation 2, the side of the foundation 1, and the bottom of the cushion layer 3.

[0024] The drainage mechanism includes multiple C-shaped drainage boards 7 arranged side by side. A C-shaped connecting plate 8 is provided at the connection between the raft 2 and the foundation 1. The two ends of the C-shaped connecting plate 8 abut against the convex surfaces of the adjacent C-shaped drainage boards 7. A waterproof coating layer is provided on the concave surfaces of the C-shaped drainage boards 7 and the C-shaped connecting plate 8 and is in contact with the foundation soil. Both ends of the C-shaped drainage boards 7 are provided with water-guiding angles 9, and the water-guiding angles 9 of two adjacent C-shaped drainage boards 7 are in close contact with each other.

[0025] In practical use, by setting C-type drainage boards 7 and C-type connecting plates 8, it is easy to divide the water in the foundation soil into sections at the bottom of each C-type drainage board 7, thus avoiding the accumulation of groundwater. Furthermore, the open ends of the C-type drainage boards 7 and C-type connecting plates 8 are all facing the foundation soil, and both ends are inserted into the foundation soil, which improves the shear strength of the raft slab 2. The contact area between the C-type drainage boards 7 and C-type connecting plates 8 and the foundation soil is also larger than that between the traditional raft slab 2 and the foundation soil, which improves the buoyancy resistance and makes it highly practical.

[0026] It should be noted that by setting the water inlet angle 9, the water on the C-type drainage board 7 can be guided to the water inlet angle 9, increasing the weight of the water at the water inlet angle 9, which in turn facilitates the water flow to converge and seep into the foundation soil more quickly, avoiding accumulation at the bottom of the raft slab 2.

[0027] In this embodiment, both the C-shaped drainage plate 7 and the C-shaped connecting plate 8 are semi-circular plates.

[0028] In this embodiment, a filling layer 6 is provided between the C-shaped drainage board 7 and the raft 2, the support platform 1 and the pad 3.

[0029] It should be noted that graded sand and gravel are used to backfill and form filling layer 6, with the graded sand and gravel mixed in a 1:2 ratio.

[0030] In this embodiment, a waterproof membrane layer 5 is provided on the side of the raft slab 2 and the support platform 1 near the filling layer 6, and the waterproof membrane layer 5 is located on the upper part of the filling layer 6.

[0031] In actual use, by setting a waterproof coating layer and a waterproof membrane layer 5 on the concave surface of the C-type drainage board 7 and the C-type connecting plate 8, a double waterproofing effect is achieved, which enhances the seepage resistance of the raft slab 2 and the foundation 1 in high water level areas.

[0032] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A structure for preventing seepage and anti-floating based on a basement raft in a high water level area, a raft (2) is arranged around a pile cap (1), a cushion layer (3) is arranged at the lower part of the pile cap (1), and a pile foundation (4) is arranged at the lower part of the cushion layer (3), characterized in that: It includes a drainage mechanism located at the lower part of the raft (2), the side of the support platform (1), and the lower part of the cushion layer (3); The drainage mechanism includes multiple C-shaped drainage boards (7) arranged side by side. A C-shaped connecting plate (8) is provided at the connection between the raft (2) and the foundation (1). The two ends of the C-shaped connecting plate (8) abut against the convex surfaces of the adjacent C-shaped drainage boards (7). A waterproof coating layer is provided on the concave surfaces of the C-shaped drainage boards (7) and the C-shaped connecting plate (8) and it is in contact with the foundation soil. Both ends of the C-shaped drainage boards (7) are provided with water-guiding angles (9). The water-guiding angles (9) of two adjacent C-shaped drainage boards (7) are closely attached to each other.

2. The anti-seepage and anti-floating structure based on the basement raft in the high water level area according to claim 1, characterized in that: Both the C-shaped drainage board (7) and the C-shaped connecting plate (8) are semi-circular plates.

3. The anti-seepage and anti-floating structure based on the basement raft in the high water level area according to claim 1, characterized in that: A filling layer (6) is provided between the C-type drainage board (7) and the raft (2), the foundation (1) and the pad (3).

4. The anti-seepage and anti-floating structure based on the basement raft in high water level area according to claim 3, characterized in that: Both the raft slab (2) and the support platform (1) are provided with a waterproof membrane layer (5) on the side near the filling layer (6), and the waterproof membrane layer (5) is located on the upper part of the filling layer (6).

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