Anti-floating pressure-limiting well structure for basement

Abstract

The utility model discloses a basement anti-floating pressure limiting well structure which comprises a pressure limiting well body arranged below a basement bottom plate, a water guide pipe arranged in the pressure limiting well body and a water pumping system communicated into the pressure limiting well body. One end of the water guide pipe penetrates through the pressure limiting well and is inserted into the inverted filter layer, and a filter water inlet is formed in the end; the other end of the water guide pipe extends into the pressure limiting well body, and an adjusting valve is arranged at the end part of the end of the water guide pipe; the adjusting valve comprises a valve cage, a floater and a plug connected to the lower portion of the floater through a connecting rod, and the size of the plug is matched with the size of the end of the water guide pipe. According to the utility model, the structure of the basement bottom plate is transformed or the pressure limiting well is additionally arranged, and opening and closing adjustment is automatically performed through basement buoyancy, so that pressure balance of the basement can be kept, potential safety hazards are avoided, and the construction period is shortened.

Description

Technical Field

[0001] This utility model belongs to the technical field of basement anti-buoyancy system, specifically relating to a basement anti-buoyancy pressure limiting well structure. Background Technology

[0002] When the rainy season arrives, rainwater seeps from the basement's exterior walls into the foundation pit, and then into the area beneath the basement floor slab. Due to water pressure, the basement floor slab arches and deforms upwards, further widening the water ingress channels and creating a vicious cycle. Ultimately, this leads to cracks in the basement floor slab and a large influx of groundwater. In severe cases, the basement may even float under water pressure, causing structural deformation and creating safety hazards.

[0003] Therefore, anti-buoyancy measures are needed for basements. In existing technologies, the main methods for basement anti-buoyancy include: 1. Resistance balancing methods: Increasing weight: This involves increasing the thickness of the soil cover on the basement roof and adding counterweights under the floor slab to increase the basement's self-weight, thereby resisting buoyancy. Alternatively, anti-buoyancy components can be installed: such as anti-buoyancy anchors and pull-out piles. These components provide additional downward force to help resist the buoyancy of the basement.

[0004] Buoyancy elimination methods: Drainage treatment is carried out by installing drainage holes or drainage systems on the basement floor or side walls to drain groundwater, thereby reducing or eliminating the buoyancy effect of groundwater on the basement.

[0005] However, both of these anti-buoyancy measures have certain drawbacks. Opening holes in the basement floor slab results in high water pressure, affecting the use of the basement and increasing costs. On the other hand, the resistance balancing method has a longer construction period and higher costs. Utility Model Content

[0006] The purpose of this utility model is to provide a basement anti-buoyancy pressure limiting well structure. By modifying the structure of the basement floor or adding a pressure limiting well, the basement can be automatically opened and closed by the buoyancy of the basement, which can maintain the pressure balance of the basement, avoid safety hazards, and save construction time.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A pressure-limiting well structure for basement anti-buoyancy includes a pressure-limiting well body disposed below the basement floor slab, a water guide pipe disposed within the pressure-limiting well body, and a pumping system connected to the pressure-limiting well body; one end of the water guide pipe passes through the pressure-limiting well and is inserted into a filter layer, and a filter inlet is provided at this end; the other end of the water guide pipe extends into the pressure-limiting well body, and a regulating valve is provided at this end of the water guide pipe; the regulating valve includes a valve cage, a float, and a plug connected to the bottom of the float via a connecting rod, and the size of the plug is adapted to the size of the end of the water guide pipe.

[0009] Furthermore, the valve cage includes an upper valve cage and a lower valve cage, and the float is disposed inside the upper valve cage, with a counterweight disposed on the float.

[0010] Furthermore, the upper valve cage is provided with float guide grooves on both sides, and guide rods are provided on both sides of the floats, with the guide rods inserted into the guide grooves.

[0011] Furthermore, the connecting rod and the plug are installed inside the lower valve cage, and multiple drainage grooves are provided around the lower valve cage.

[0012] Furthermore, the plug is conical, and a conical plate is provided at the end of the water guide pipe.

[0013] Furthermore, the pumping system includes a pump and a pumping pipe, with one end of the pumping pipe extending into the bottom of the pressure-limiting well body.

[0014] Compared with existing technologies, the advantages of this invention are as follows: First, this invention involves modifying or adding a pressure-limiting well at the basement floor level, and installing an automatically adjustable valve based on buoyancy within the pressure-limiting well, eliminating the need for additional electrical connections or other control components. During the rainy season, when rainfall is heavy and groundwater seeps into the basement floor, the increased water pressure automatically lifts the float, allowing the groundwater to drain into the pressure-limiting well through a water pipe. This ensures that the buoyancy force on the basement structure remains below its load-bearing capacity, guaranteeing the safety of the basement structure. When the water pressure decreases, the float loses its buoyancy and automatically resets under its own weight, making the overall structure more flexible. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the anti-buoyancy and pressure-limiting well structure for basements provided by this utility model.

[0017] Figure 2 This is a schematic diagram of the regulating valve of the basement anti-buoyancy pressure limiting well structure provided by this utility model.

[0018] Attached reference numerals: 1. Pressure limiting well body; 2. Pumping pipe; 3. Water guide pipe; 4. Regulating valve; 5. Filter layer; 6. Basement floor slab; 7. Plug; 8. Float; 9. Guide rod; 10. Upper valve cage; 11. Lower valve cage; 12. Drainage trough. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.

[0023] Furthermore, the use of terms such as "horizontal," "vertical," and "suspended" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0026] like Figures 1-2As shown, a basement anti-buoyancy pressure limiting well structure includes a pressure limiting well body 1 installed below the basement floor slab 6, a water guide pipe 3 installed inside the pressure limiting well body 1, and a pumping system connected to the pressure limiting well body 1; one end of the water guide pipe 3 passes through the pressure limiting well and is inserted into the reverse filter layer 5, and a filter inlet is provided at this end; the other end of the water guide pipe 3 extends into the pressure limiting well body 1, and a regulating valve 4 is provided at this end of the water guide pipe 3; the regulating valve 4 includes a valve cage, a float 8, and a plug 7 connected to the bottom of the float 8 by a connecting rod, and the size of the plug 7 is adapted to the size of the end of the water guide pipe 3.

[0027] Compared to existing technologies, the anti-buoyancy structures for basements primarily employ passive anti-buoyancy measures to counteract the buoyancy of groundwater, such as anti-buoyancy anchors, anti-buoyancy piles, and structural counterweights. The main principle is based on Archimedes' principle, which states that the buoyant force on an object in a liquid is equal to the weight of the repelled liquid. When the water level around the basement rises, the pore water pressure in the soil also increases, causing the basement to experience an upward force, thus creating the risk of it floating. This buoyancy is countered by increasing gravity or tension to ensure the stability of the basement structure. In this invention, however, a "drainage" approach is adopted instead of blocking. A pressure-limiting well structure is modified or added below the existing basement floor slab 6. This pressure-limiting well structure collects infiltrated groundwater, thereby reducing the buoyancy on the basement floor slab 6 and ensuring the safety of the basement structure. Furthermore, the opening and closing of the inlet is automatically adjusted based on the water pressure in the basement, requiring no manual supervision or electric control, effectively saving costs. The structure is also simple and easy to construct, significantly reducing construction costs in the early stages.

[0028] The valve cage includes an upper valve cage 10 and a lower valve cage 11, with a float 8 installed inside the upper valve cage 10 and a counterweight on the float 8. The weight of the counterweight on the float 8 is determined based on the basement design standards and the self-weight of the basement structure, ensuring that the counterweight will only be lifted by the float 8 under a certain water pressure.

[0029] The upper valve cage 10 has guide grooves for floats 8 on both sides, and guide rods 9 are provided on both sides of the floats 8, with the guide rods 9 inserted into the guide grooves. The guide grooves for the floats 8 in the upper valve cage 10 restrict the floating direction of the floats 8, avoiding the problem of failure to reset.

[0030] The connecting rod and plug 7 are disposed inside the lower valve cage 11, and multiple drainage grooves 12 are provided around the lower valve cage 11. The plug 7 is conical, and a conical plate is provided at the end of the water guide pipe 3. The water guide pipe 3 is sealed by setting the plug 7 structure.

[0031] The pumping system includes a pump and a pumping pipe 2, with one end of the pumping pipe 2 extending into the bottom of the pressure-limiting well body 1. The pumping system is used to promptly remove accumulated water from the pressure-limiting well.

[0032] In practical use, firstly, when the rainy season arrives, the basement floor slab 6 experiences increased buoyancy due to increased water infiltration. The pressure-limiting well provided in this application is located below the basement floor slab 6. When the water pressure reaches a certain level, it pushes open the plug 7 through the water pipe 3, draining water into the pressure-limiting well. As the water pressure remains high, the water volume in the pressure-limiting well gradually increases until the force on the float 8 exceeds the weight of the counterweight, pulling the plug 7 open and maximizing the water inflow through the water pipe 3. At this point, a pumping system is needed to simultaneously drain the accumulated water from the pressure-limiting well. After the basement water pressure decreases and the water volume in the pressure-limiting well decreases, the buoyancy on the float 8 decreases, and the plug 7 gradually returns to its original position under the weight of the counterweight. The overall structure is simple, easy to implement, and can significantly reduce construction time and costs.

[0033] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A basement anti-buoyancy and pressure-limiting well structure, characterized in that: It includes a pressure limiting well body (1) set below the basement floor slab (6), a water guide pipe (3) set inside the pressure limiting well body (1), and a pumping system connected to the pressure limiting well body (1); one end of the water guide pipe (3) passes through the pressure limiting well and is inserted into the reverse filter layer (5), and a filter inlet is set at this end; the other end of the water guide pipe (3) extends into the pressure limiting well body (1), and a regulating valve (4) is set at this end of the water guide pipe (3); the regulating valve (4) includes a valve cage, a float (8), and a plug (7) connected to the bottom of the float (8) by a connecting rod, and the size of the plug (7) is adapted to the size of the end of the water guide pipe (3).

2. The basement anti-buoyancy and pressure-limiting well structure according to claim 1, characterized in that: The valve cage includes an upper valve cage (10) and a lower valve cage (11), and a float (8) is set inside the upper valve cage (10), and a counterweight is set on the float (8).

3. The basement anti-buoyancy and pressure-limiting well structure according to claim 2, characterized in that: The upper valve cage (10) is provided with float (8) guide grooves on both sides, and guide rods (9) are provided on both sides of the floats (8), with the guide rods (9) inserted into the guide grooves.

4. The basement anti-buoyancy and pressure-limiting well structure according to claim 1, characterized in that: The connecting rod and plug (7) are installed inside the lower valve cage (11), and multiple drainage grooves (12) are provided around the lower valve cage (11).

5. The basement anti-buoyancy and pressure-limiting well structure according to claim 4, characterized in that: The plug (7) is conical, and a conical plate is provided at the end of the water pipe (3).

6. The basement anti-buoyancy and pressure-limiting well structure according to claim 1, characterized in that: The pumping system includes a pump and a pumping pipe (2), with one end of the pumping pipe (2) extending into the bottom of the pressure-limiting well body (1).

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