A drainage structure for building foundation pits

Abstract

This utility model relates to the field of foundation pit drainage technology, and more specifically, to a foundation pit drainage structure, comprising: a base platform, in the shape of a rectangular frame, disposed within the foundation pit; a foundation wall, vertically fixed to the base platform; four sets of water filter components, detachably disposed on the four inner sides of the base platform, each water filter component having a protruding portion, the protruding portion being hollow and having several water passage holes, and a connecting pipe portion on the upper side of each water filter component for connecting an external water pump; and four hollow connecting pieces, each communicating with the protruding portions of two adjacent water filter components. This utility model's foundation pit drainage structure aims to solve the problems of uneven drainage and easy clogging in existing foundation pit technologies.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit drainage technology, and more specifically, to a building foundation pit drainage structure. Background Technology

[0002] In the field of construction engineering, foundation pit drainage is a crucial step in ensuring construction safety and foundation stability. Traditional foundation pit drainage systems mostly employ fixed drainage ditches or sump structures, using water pumps to extract seepage water to the outside.

[0003] However, traditional drainage structures are usually cast-in-place or fixedly installed, and the filter channels are mostly straight or arranged on one side, which makes it difficult to adapt to the problem of uneven water distribution around the foundation pit, resulting in insufficient drainage in some areas.

[0004] Furthermore, existing drainage structures are mostly planar or simple curved designs, lacking specificity in the density and direction of the water passages. After seepage enters the drainage channel, the lack of flow guidance design results in a slow water flow, easily leading to sediment accumulation within the channel and exacerbating the risk of blockage. Utility Model Content

[0005] The main purpose of this utility model is to propose a drainage structure for building foundation pits, which aims to solve the problems of uneven drainage and easy blockage in the existing technology.

[0006] To address the aforementioned technical issues, a drainage structure for building foundation pits is proposed, comprising: a base platform, which is rectangular in shape and set within the foundation pit;

[0007] The foundation wall is vertically fixed to the base platform;

[0008] Four sets of water filtration components are detachably installed on the four inner sides of the base. Each water filtration component has a protrusion, which is hollow and has several water passage holes. The upper side of each water filtration component has a connecting pipe for connecting an external water pump.

[0009] Four connectors, hollow in design, are respectively connected to the protrusions of two adjacent water filtration components.

[0010] In any of the above technical solutions, the protrusion further includes a first side surface and a second side surface;

[0011] The first side is vertically arranged, the second side is inclined, and the bottom of the first side and the second side are connected.

[0012] In any of the above technical solutions, the included angle between the first side and the second side is 22°-45°.

[0013] In any of the above technical solutions, the water filtration assembly further includes:

[0014] The first cover plate has a first section, a second section, a third section and a fourth section connected in sequence. The first section is detachably mounted on the base. The second section and the third section form the protrusion. The second section is parallel to the inner side of the base. The fourth section is coplanar with the first section.

[0015] The second cover plate is detachably mounted on the first section and the fourth section.

[0016] In any of the above technical solutions, a further step is to provide a gap between the second segment and the inner side of the base.

[0017] In any of the above technical solutions, the connector is further L-shaped, and the cross-sectional shape of the connector is adapted to the shape of the hollow part of the protrusion.

[0018] In any of the above technical solutions, further comprising:

[0019] The third cover plate covers the hollow part of the base, and has notches or grooves corresponding to each of the connecting pipes.

[0020] The beneficial effects are:

[0021] 1. The building foundation pit drainage structure of this utility model is modularly assembled by connecting parts through four sets of water filter components, which can be quickly disassembled for cleaning or replacement, avoiding construction interruption caused by overall structure maintenance.

[0022] 2. The separate design of the first and second cover plates simplifies the maintenance process of the water filter components. The flexible layout of the base of the water filter components can adapt to different pit sizes and seepage distribution requirements. In addition, the four sets of water filter components are set on different sides and connected by connectors, which can ensure that all areas of the pit are fully drained.

[0023] 3. The protruding part of the water filter component adopts a triangular structure with a vertical first side and an inclined second side, combined with an included angle design of 22°-45°, which significantly improves the water flow guidance efficiency, while using the inclined surface to intercept coarse particle sediments. The L-shaped hollow structure of the connector is adapted to the shape of the protruding part to ensure seamless water flow between adjacent water filter components and reduce path resistance.

[0024] 4. A gap is reserved between the second section and the inner side of the base to form an auxiliary flow guiding space, which allows the water deposited in the soil to simultaneously converge into the protrusion through the outer sides of the second and third sections, reducing the risk of blockage.

[0025] 5. The rectangular frame structure of the base provides uniform stress support for the water filter components, preventing localized deformation. Standardized interfaces on the connecting pipes support parallel or series connection of multiple water pumps to adapt to different drainage requirements. The overall structure uses lightweight materials to reduce transportation and installation costs. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural diagram of a building foundation pit drainage structure installed in a foundation pit according to an embodiment of this utility model;

[0028] Figure 2 This is a three-dimensional structural diagram of a building foundation pit drainage structure according to an embodiment of this utility model;

[0029] Figure 3 This is a cross-sectional structural diagram of a building foundation pit drainage structure installed in the foundation pit according to an embodiment of the present utility model.

[0030] Figure 4 yes Figure 3 A magnified schematic diagram of the partial structure at point A in the middle;

[0031] Figure 5 This is a partial structural schematic diagram of a building foundation pit drainage structure according to an embodiment of the present utility model.

[0032] The annotations in the attached figures are explained as follows:

[0033] 1. Abutment;

[0034] 2. Foundation walls;

[0035] 3. Water filtration assembly; 301. Protrusion; 302. Connecting pipe; 303. First side; 304. Second side; 305. First cover plate; 306. Second cover plate; 307. First section; 308. Second section; 309. Third section; 310. Fourth section;

[0036] 4. Connectors;

[0037] 5. Third cover plate. Detailed Implementation

[0038] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely a part of the embodiments of this application, and not all of the embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0039] It should be noted that, as shown in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements.

[0040] If the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0043] The following embodiments will be used to provide a detailed description of a building foundation pit drainage structure according to this application.

[0044] In this embodiment, as Figures 1 to 5 As shown, the building foundation pit drainage structure includes: a base platform 1, which is rectangular in shape and is set inside the foundation pit;

[0045] Foundation wall 2 is vertically fixed to base platform 1;

[0046] Four sets of water filter components 3 are detachably installed on the four inner sides of the base 1. Each water filter component 3 has a protrusion 301, which is hollow and has several water passage holes. The upper side of the water filter component 3 is provided with a connecting pipe 302 for connecting an external water pump.

[0047] Four connectors 4 are hollow and are connected to the protrusions 301 of two adjacent water filter components 3 respectively.

[0048] In this technical solution, the base platform 1 adopts a rectangular frame steel structure, which is embedded in the bottom of the foundation pit. Its outer frame size is slightly larger than the foundation pit size and is fixed on the outside by backfilling soil. Its inner frame size is slightly smaller than the foundation pit size. The foundation wall 2 is vertically welded to the upper surface of the base platform 1, with a height of 1.2-1.5m, forming the foundation pit retaining structure.

[0049] The water filter assembly 3 is detachably mounted on the base 1 via threaded holes on the base 1 and its own through-hole bolts. The protrusion 301 of the water filter assembly 3 is a hollow triangle, and water passage holes with a diameter of 3-8mm are evenly opened on both sides of the protrusion 301, with a spacing of 15cm. The top surface of the water filter assembly 3 is provided with a circular pipe interface for connecting to an external water pump.

[0050] The connector 4 is made of PVC material, and its two ends are respectively inserted into the two adjacent protrusions 301. Rubber sealing rings (not shown in the figure) are fitted on the outer sides of the two ends of the connector 4. The four connectors 4 and the four water filter components 3 form a ring drainage network.

[0051] In some technical solutions, a flexible hose is provided at the bottom end of the connecting pipe 302 into the protrusion 301 to facilitate the external water pump to remove the water accumulated in the protrusion 301.

[0052] In this embodiment, the protrusion 301 includes a first side surface 303 and a second side surface 304;

[0053] The first side 303 is vertically arranged, the second side 304 is inclined, and the bottoms of the first side 303 and the second side 304 are connected.

[0054] In this technical solution, the first side 303 of the protrusion 301 is a vertical plane, spaced 20-80mm from the inner wall of the base 1; the second side 304 is an inclined surface, connected to the first side 303 at its bottom, and gradually inclined towards the inner center of the base 1 from bottom to top. The angle θ between the inclined surface and the vertical surface is 30° to balance the flow guiding efficiency and structural strength.

[0055] In this embodiment, the included angle between the first side 303 and the second side 304 is 22°-45°.

[0056] In this technical solution, through fluid simulation experiments, when the included angle θ is 22°, the water flow velocity increases by 15%, but the sediment interception rate decreases by 20%; when θ is 45°, the sediment interception rate increases to 85%, but the water flow resistance increases by 10%. Therefore, the range of θ is limited to 22°-45°, with the optimal range being 30°-40°.

[0057] In this embodiment, the water filtration assembly 3 includes:

[0058] The first cover plate 305 has a first section 307, a second section 308, a third section 309 and a fourth section 310 connected in sequence. The first section 307 is detachably mounted on the base 1. The second section 308 and the third section 309 form a protrusion 301. The second section 308 is arranged parallel to the inner side of the base 1. The fourth section 310 is arranged coplanarly with the first section 307.

[0059] The second cover plate 306 is detachably mounted on the first section 307 and the fourth section 310.

[0060] In this technical solution, the first cover plate 305 is formed by bending four sections of steel plate: the first section 307 is fixed to the base 1 by bolts; the second section 308 is parallel to the inner side of the base 1, with a spacing of 5cm and extends vertically downward; the third section 309 is inclined to form the inner side of the protrusion 301; the fourth section 310 is coplanar with the first section 307.

[0061] The second cover plate 306 directly covers the first section 307 and the fourth section 310, and also covers the second section 308 and the third section 309. The second cover plate 306, the second section 308, and the third section 309 surround each other to form a hollow protrusion 301. The second cover plate 306 is provided with a countersunk hole, and the first section 307 and the fourth section 310 are provided with corresponding threaded holes. The second cover plate 306 and the first cover plate 305 are detachably connected by bolts.

[0062] In this embodiment, a gap is provided between the second segment 308 and the inner side surface of the base 1.

[0063] In this technical solution, a 5cm gap is reserved between the second section 308 and the inner side of the base 1 to form an auxiliary flow channel. Groundwater can flow from the outside of the second section 308 into the protrusion 301 through this gap, reducing the risk of blockage of the water passage.

[0064] In this embodiment, the connector 4 is L-shaped, and the cross-sectional shape of the connector 4 is adapted to the shape of the hollow part of the protrusion 301.

[0065] In this technical solution, the cross-sectional shape of the connector 4 matches the hollow cavity of the protrusion 301, the bending angle of the connector 4 is 90°, and both ends are directly snapped into the hollow cavity of the protrusion 301 and fixed with the locking of the second cover plate 306 and the first cover plate 305, which reduces the overall installation accuracy requirements of the drainage structure and ensures continuous drainage at the corner.

[0066] In this embodiment, it also includes:

[0067] The third cover plate 5 covers the hollow part of the base 1, and has notches and grooves corresponding to each connecting pipe.

[0068] In this technical solution, the third cover plate 5 has four U-shaped notches at the positions corresponding to the four connecting pipe sections 302, each 2cm wider than the connecting pipe section 302. The third cover plate 5 also has corresponding through holes at the threaded holes corresponding to the locking points of the first cover plate 305 and the second cover plate 306, so that the three can share bolts. The third cover plate 5 is designed to collect groundwater below it, facilitating the flow of groundwater to the filter assembly 3 and minimizing the risk of groundwater surfacing above the third cover plate 5.

[0069] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A building foundation pit drainage structure characterized by, include: The base (1) is rectangular and is set inside the foundation pit; The foundation wall (2) is vertically fixed on the base (1); Four sets of water filter components (3) are detachably installed on the four inner sides of the base (1). Each water filter component (3) has a protrusion (301), which is hollow and has several water passage holes. The upper side of the water filter component (3) is provided with a connecting pipe (302), which is used to connect an external water pump. Four connectors (4) are hollow and are respectively connected to the protrusions (301) of the two adjacent water filter components (3).

2. The building foundation drainage structure according to claim 1, characterized by, The protrusion (301) includes a first side surface (303) and a second side surface (304); The first side (303) is vertically arranged, the second side (304) is inclined, and the bottoms of the first side (303) and the second side (304) are connected.

3. The building foundation drainage structure according to claim 2, characterized by, The included angle between the first side (303) and the second side (304) is 22°-45°.

4. The building foundation drainage structure according to claim 1, wherein The water filtration assembly (3) includes: The first cover plate (305) is provided with a first section (307), a second section (308), a third section (309) and a fourth section (310) connected in sequence. The first section (307) is detachably disposed on the base (1). The second section (308) and the third section (309) form the protrusion (301). The second section (308) is disposed parallel to the inner side of the base (1). The fourth section (310) is disposed coplanarly with the first section (307). The second cover plate (306) is detachably disposed on the first section (307) and the fourth section (310).

5. The building foundation drainage structure according to claim 4, wherein A gap is provided between the second section (308) and the inner side of the base (1).

6. The building foundation drainage structure according to claim 1, wherein The connector (4) is L-shaped, and the cross-sectional shape of the connector (4) is adapted to the shape of the hollow part of the protrusion (301).

7. The building foundation drainage structure according to claim 1, wherein Also includes: The third cover plate (5) covers the hollow part of the base (1) and has notches corresponding to each of the connecting pipes.

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