Basement drainage pressure relief anti-floating structure

Abstract

The utility model discloses a basement drainage pressure reduction anti -floating structure, the basement is by basement floor, basement roof and basement outer wall constitute, be equipped with drainage pressure reduction mechanism one on the basement floor in the basement, be equipped with drainage pressure reduction mechanism two at the basement outer wall, wherein drainage pressure reduction mechanism two and drainage pressure reduction mechanism one jointly constitute the basement drainage pressure reduction anti -floating mechanism, the utility model discloses a U type drainage pipe is arranged in the catch basin peripheral range, timely drainage when the underground water level reaches the set high, thereby initiatively control anti -floating water level, reduce anti -floating facility investment, improve the engineering economy. U type drainage pipe can be replaced according to need, and the high requirement of setting is set according to the anti -floating design when the dry season, reduces the later maintenance cost, and the low drainage pressure reduction high can be adjusted under the rich water period and the extreme weather condition, further increases structural anti -floating safety.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, and specifically relates to a basement drainage, pressure reduction and anti-buoyancy structure. Background Technology

[0002] With economic development and increasingly scarce land resources, accelerating the construction of underground space and improving land use efficiency are of significant strategic importance for expanding national development space and optimizing urban construction. In engineering design, the proportion of basements with two or more underground levels is also increasing, making anti-buoyancy design a key focus. Currently, commonly used anti-buoyancy design methods for basements include passive anti-buoyancy measures such as increasing the building's self-weight, installing anti-uplift piles, and installing anti-uplift anchors. Conventional anti-buoyancy design water levels are mostly based on the outdoor ground level. However, if active drainage and pressure reduction measures can be adopted to lower the anti-buoyancy design water level, the anti-buoyancy design requirements for basements can be reduced, thus decreasing the cost of anti-buoyancy facilities.

[0003] The drainage and pressure reduction method involves arranging drainage pipes at regular intervals along the outer walls or in the middle of the basement. This guides groundwater through these pipes into the basement's internal drainage system, lowering the groundwater level in and around the basement. This reduces the anti-buoyancy design level, decreases buoyancy, and optimizes the design of the foundation slab and outer walls, meeting safety and economic design goals. While the lower groundwater level reduces the probability of basement seepage, some groundwater still needs to be pumped into the municipal drainage network during daily use, increasing future drainage costs. Drainage pipes are typically straight. The anti-buoyancy design level is related to the elevation of the inlet orifice of the drainage pipe outside the basement. A higher orifice results in a higher anti-buoyancy design level, higher costs for anti-buoyancy equipment, less water discharged into the basement, and lower drainage costs. Conversely, a lower orifice results in a lower anti-buoyancy design level, lower costs for anti-buoyancy equipment, more water discharged into the basement, and higher drainage costs.

[0004] During the engineering design phase, to minimize the design water level for buoyancy and reduce initial construction costs, the inlet of the drainage pipe is typically placed at a low position. Because the location of the drainage hole is fixed, the drainage elevation cannot be actively adjusted. Regardless of whether it's the wet or dry season, a large amount of groundwater is discharged into the basement year-round, requiring pumping facilities to discharge it into the municipal water supply network, resulting in high operating costs. Due to the need for drainage and pressure reduction, fine particles in the surrounding soil will be carried out during long-term drainage, necessitating the installation of a filter layer at the drainage hole. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a basement drainage, pressure reduction, and anti-buoyancy structure. By arranging U-shaped drainage pipes around the sump, drainage is promptly carried out when the groundwater level reaches a set elevation, thereby actively controlling the anti-buoyancy water level. Simultaneously, the drainage elevation can be adjusted. During dry periods or periods without prolonged rainfall, the drainage elevation can be raised to reduce the basement drainage volume and lower subsequent maintenance costs. When necessary, such as during the rainy season or extreme weather conditions, the drainage elevation can be lowered to increase the basement's anti-buoyancy safety factor.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: A basement drainage, pressure reduction, and anti-buoyancy structure is provided. The basement consists of a basement floor slab, a basement roof slab, and basement exterior walls. A drainage and pressure reduction mechanism 1 is provided on the basement floor slab inside the basement, and a drainage and pressure reduction mechanism 2 is provided on the basement exterior walls. The drainage and pressure reduction mechanism 2 and the drainage and pressure reduction mechanism 1 together constitute the basement drainage, pressure reduction, and anti-buoyancy structure. The drainage and pressure relief mechanism includes a drainage pipe and a collection well. The collection well is located on the basement floor inside the basement. At the end of the drainage pipe that passes through the basement floor, there is a geotextile-wrapped graded sand and gravel filter layer. The other end of the drainage pipe extends into the collection well. The second drainage and pressure relief mechanism includes a second drainage pipe and a second collection well. The second collection well is provided on the basement floor slab where the basement exterior wall is located. The end of the second drainage pipe that passes through the basement exterior wall is provided with a second graded sand and gravel filter layer wrapped with geotextile. The other end of the second drainage pipe extends into the second collection well.

[0007] Furthermore, both the first drain pipe and the second drain pipe are U-shaped drain pipes.

[0008] Furthermore, the drain pipe includes a straight pipe section and a bend section, the bend section being connected to the straight pipe section via a flange, and a valve being installed on the straight pipe section.

[0009] Furthermore, the second drain pipe includes an L-shaped pipe and a second bend section, the second bend section being connected to the L-shaped pipe via a flange, and a valve being provided on the L-shaped pipe.

[0010] Furthermore, it includes a first cushion layer, which is located below the basement floor slab, wherein a geotextile-wrapped graded sand and gravel filter layer is located below the first cushion layer, and the straight pipe section is provided with a geotextile-wrapped graded sand and gravel filter layer at the lower end where it passes through the basement floor slab and the first cushion layer.

[0011] Furthermore, it includes a second cushion layer, which is located below the basement floor slab at the basement exterior wall. The second geotextile-wrapped graded sand and gravel filter layer is located below the second cushion layer. The L-shaped pipe has a geotextile-wrapped graded sand and gravel filter layer at its port where it passes through the basement floor slab at the basement exterior wall and the second cushion layer.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1) This utility model arranges U-shaped drainage pipes around the water collection well to drain water in a timely manner when the groundwater level reaches the set elevation, thereby actively controlling the anti-buoyancy water level, reducing investment in anti-buoyancy facilities, and improving the economic efficiency of the project; 2) The basement drainage, pressure reduction, and anti-buoyancy structure of this utility model has a reasonable design, high structural safety, good drainage performance, and can effectively reduce the anti-buoyancy design water level.

[0013] 3) The U-shaped drainage pipe of this utility model is detachably connected at both ends, and the drainage pressure relief elevation can be adjusted. During the dry season, the drainage pressure relief elevation is set according to the requirements of the anti-buoyancy design, which reduces the later maintenance cost. During the wet season and in extreme weather conditions, the drainage pressure relief elevation can be lowered to further increase the structural anti-buoyancy safety. 4) This utility model adds a flange connection to the U-shaped drain pipe, which facilitates the replacement of the upper U-shaped water pipe and allows for active adjustment of the drainage height. A valve is added to the U-shaped drain pipe to shut off the water flow first, so that no water will flow when the U-shaped water pipe is replaced. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the drainage, pressure reduction, and anti-buoyancy structure of the basement floor slab inside the basement of this utility model; Figure 2 This is a schematic diagram of the drainage, pressure reduction, and anti-buoyancy structure of the basement floor slab at the basement exterior wall of this utility model.

[0015] In the diagram: 1. Basement floor slab; 2. Basement roof slab; 3. Basement exterior wall; 4. Drainage pipe 1; 41. Straight pipe section; 42. Bend section 1; 5. Sump well 1; 6. Geotextile-wrapped graded sand and gravel filter layer 1; 7. Drainage pipe 2; 71. L-shaped pipe; 72. Bend section 2; 8. Sump well 2; 9. Geotextile-wrapped graded sand and gravel filter layer 2; 10. Flange; 11. Valve; 12. Subbase layer 1; 13. Subbase layer 2. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the scope described herein.

[0017] A basement drainage, pressure reduction, and anti-buoyancy structure is disclosed. The basement consists of a basement floor slab 1, a basement roof slab 2, and basement exterior walls 3. A drainage and pressure reduction mechanism 1 is installed on the basement floor slab 1 inside the basement, and a drainage and pressure reduction mechanism 2 is installed on the basement exterior walls 3. The drainage and pressure reduction mechanism 2 and the drainage and pressure reduction mechanism 1 together constitute the basement drainage, pressure reduction, and anti-buoyancy structure. This utility model arranges U-shaped drainage pipes around the water collection well to drain water in a timely manner when the groundwater level reaches a set elevation, thereby actively controlling the anti-buoyancy water level and reducing investment in anti-buoyancy facilities.

[0018] Please refer to Figure 1 The drainage and pressure relief mechanism includes a drainage pipe 4 and a collection well 5. The collection well 5 is located on the basement floor 1 inside the basement. At the end of the drainage pipe 4 that passes through the basement floor 1, there is a geotextile-wrapped graded sand and gravel filter layer 6. The other end of the drainage pipe 4 extends into the collection well 5.

[0019] Drain pipe 4 is a U-shaped drain pipe. Drain pipe 4 includes a straight pipe section 41 and a bend section 42. The bend section 42 is connected to the straight pipe section 41 through a flange 10. A valve 11 is provided on the straight pipe section 41.

[0020] In this embodiment, a cushion layer 12 is provided below the basement floor slab 1. A geotextile-wrapped graded sand and gravel filter layer 6 is located below the cushion layer 12. The straight pipe section 41 is provided with the geotextile-wrapped graded sand and gravel filter layer 6 at the lower end of the basement floor slab 1 and the cushion layer 12.

[0021] Please refer to Figure 2 The drainage and pressure relief mechanism includes a drainage pipe 27 and a water collection well 28. The water collection well 28 is located on the basement floor slab 1 where the basement exterior wall 3 is located. At the end of the drainage pipe 27 that passes through the basement exterior wall 3, there is a geotextile-wrapped graded sand and gravel filter layer 29. The other end of the drainage pipe 27 extends into the water collection well 28.

[0022] Drainage pipe 2 7 is a U-shaped drainage pipe. Drainage pipe 2 7 includes an L-shaped pipe 71 and a bend section 2 72. The bend section 2 72 is connected to the L-shaped pipe 71 through a flange 10. A valve 11 is provided on the L-shaped pipe 71.

[0023] The two U-shaped drain pipes are connected by flanges to facilitate the replacement of the upper U-shaped water pipe and to actively adjust the drainage height. A valve is added to the U-shaped drain pipe to shut off the water flow first, so that no water will flow when the U-shaped water pipe is replaced.

[0024] In this embodiment, a second cushion layer 13 is included, which is located below the basement floor slab 1 at the basement exterior wall. A second geotextile-wrapped graded sand and gravel filter layer 9 is located below the second cushion layer 13. The L-shaped pipe 71 is provided with the geotextile-wrapped graded sand and gravel filter layer 9 at the port where it passes through the basement floor slab 1 at the basement exterior wall and the second cushion layer 13.

[0025] Both drain pipe 4 and drain pipe 7 are U-shaped drain pipes. According to the principle of communicating vessels, the liquid levels of the same liquid remain the same in a static state. Utilizing this principle, this invention uses U-shaped drain pipes instead of commonly used straight pipes. Its advantages are: First, actively control the design anti-buoyancy water level; the highest point of the U-shaped pipe is the drainage and pressure reduction elevation. Second, if the water level outside the basement does not exceed the highest point of the U-shaped pipe, no drainage is required; if the water level outside the basement exceeds the highest point of the U-shaped pipe, drainage and pressure reduction will begin. Third, the U-shaped pipe can be replaced as needed. During the dry season, the elevation should be set according to the anti-buoyancy design requirements to reduce later maintenance costs. During the wet season and in extreme weather conditions, the drainage pressure reduction elevation can be lowered to further increase the structural anti-buoyancy safety.

Claims

1. A basement drainage, pressure reduction, and anti-buoyancy structure, wherein the basement is composed of a basement floor slab (1), a basement roof slab (2), and basement exterior walls (3), characterized in that... The basement floor slab (1) inside the basement is provided with a drainage and pressure reduction mechanism 1, and the basement exterior wall (3) is provided with a drainage and pressure reduction mechanism 2. The drainage and pressure reduction mechanism 2 and the drainage and pressure reduction mechanism 1 together constitute the basement drainage, pressure reduction and anti-buoyancy mechanism. The drainage and pressure relief mechanism includes a drainage pipe (4) and a collection well (5). The collection well (5) is located on the basement floor slab (1) inside the basement. The drainage pipe (4) has a geotextile-wrapped graded sand and gravel filter layer (6) at the end where it passes through the basement floor slab (1). The other end of the drainage pipe (4) extends into the collection well (5). The second drainage and pressure relief mechanism includes a second drainage pipe (7) and a second water collection well (8). The second water collection well (8) is provided on the basement floor slab (1) where the basement exterior wall (3) is located. The second drainage pipe (7) is provided with a geotextile-wrapped graded sand and gravel filter layer (9) at the end of the drainage pipe (7) that passes through the basement exterior wall (3). The other end of the drainage pipe (7) extends into the second water collection well (8).

2. The basement drainage, pressure reduction, and anti-buoyancy structure according to claim 1, characterized in that... Both the first drain pipe (4) and the second drain pipe (7) are U-shaped drain pipes.

3. The basement drainage, pressure reduction, and anti-buoyancy structure according to claim 2, characterized in that... The drain pipe (4) includes a straight pipe section (41) and a bend pipe section (42). The bend pipe section (42) is connected to the straight pipe section (41) via a flange (10). A valve (11) is provided on the straight pipe section (41).

4. The basement drainage, pressure reduction, and anti-buoyancy structure according to claim 2, characterized in that... The second drain pipe (7) includes an L-shaped pipe (71) and a second bend pipe section (72). The second bend pipe section (72) is connected to the L-shaped pipe (71) through a flange (10). A valve (11) is provided on the L-shaped pipe (71).

5. A basement drainage, pressure reduction, and anti-buoyancy structure according to claim 3, characterized in that... Includes a first cushion layer (12), which is located below the basement floor slab (1). The first graded sand and gravel filter layer (6) wrapped with geotextile is located below the first cushion layer (12). The straight pipe section (41) is provided with the first graded sand and gravel filter layer (6) wrapped with geotextile at the lower end of the basement floor slab (1) and the first cushion layer (12).

6. A basement drainage, pressure reduction, and anti-buoyancy structure according to claim 4, characterized in that... The system includes a second cushion layer (13), which is located below the basement floor slab (1) at the basement exterior wall. A geotextile-wrapped graded sand and gravel filter layer (9) is located below the second cushion layer (13). The L-shaped pipe (71) is provided with a geotextile-wrapped graded sand and gravel filter layer (9) at the port where it passes through the basement floor slab (1) at the basement exterior wall and the second cushion layer (13).

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