Drainage device of foundation pit supporting structure
By designing the drainage device of the foundation pit support structure, the grooves and guard plate structure of the drain pipe are used to avoid the problem of drainage pipe blockage after concrete solidification, and efficient discharge of water in the foundation pit is achieved.
Patent Information
- Application Number
- CN202420669509.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-03-11
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the excavation of the foundation pit, it is difficult to open the outlet of the drain pipe after it is sprayed to solidify, affecting the drainage efficiency.
A foundation pit support structure drainage device is designed, including a filtering mechanism and a drainage mechanism. The drain pipe side wall of the drainage mechanism is provided with grooves, and the first and second guard plates are installed at one end of the pipe, and the outlet pipe is inclined to install screw plugs to prevent concrete from entering.
It effectively avoids concrete being attached to the drain pipe outlet, ensuring that the outlet can be opened conveniently in the later stage, and ensuring that the water inside the soil layer can be effectively discharged.
Smart Images
Figure CN222594872U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of foundation pit drainage, in particular to a drainage device for a foundation pit supporting structure. Background Art
[0002] Foundation pit support is a measure of support, reinforcement and protection for the side walls of the foundation pit and the surrounding environment to ensure the safety of underground structure construction and the surrounding environment of the foundation pit.
[0003] During the excavation of foundation pits, soil nail walls are often used to reinforce the slopes of foundation pits. Drain pipes are pre-inserted on the surface of the soil nail walls to drain the water accumulated inside the soil layer. However, when spraying concrete on the surface of the foundation pit slope for reinforcement, part of the concrete is sprayed onto the outlet of the drain pipe. After the concrete solidifies, it adheres to the outlet, making it inconvenient for workers to open the outlet later.
[0004] Therefore, it is necessary to provide a new foundation pit support structure drainage device to solve the above technical problems. Utility Model Content
[0005] The technical problem solved by the utility model is to provide a drainage device for a foundation pit support structure which can prevent concrete from adhering to the water outlet of a drainage pipe.
[0006] In order to solve the above technical problems, the drainage device of the foundation pit support structure provided by the utility model includes: a filtering mechanism, which extends into the interior of the soil layer; a drainage mechanism, which includes a drainage pipe, which is connected to the filtering mechanism, and the side wall of the drainage pipe is provided with a groove for water inlet; a first guard plate is installed at one end of the drainage pipe, and a second guard plate is symmetrically installed on the side wall of the first guard plate; an outlet pipe is installed obliquely on the side wall of the drainage pipe, a screw plug is installed inside the outlet pipe, and the outlet pipe is located inside the first guard plate and the second guard plate; a foundation pit guard wall, and the drainage pipe is fixed inside the foundation pit guard wall.
[0007] Preferably, the foundation pit retaining wall comprises a steel wire mesh, the steel wire mesh is laid on the surface of the soil layer, a plurality of anchor rods are inserted into the interior of the soil layer, and a concrete layer is poured on the surface of the steel wire mesh.
[0008] Preferably, a drainage ditch is provided at the bottom end of the concrete layer.
[0009] Preferably, the filtering mechanism includes a fixing ring, the side wall of the drain pipe is fixedly connected to the fixing ring, and the fixing ring abuts against the side wall of the fixing sleeve; a plurality of elastic fixing rods are installed between the fixing sleeve and the pointed head, a geotextile layer is installed on the inner side wall of the fixing rod, and the two ends of the geotextile layer are respectively connected to the pointed head and the fixing sleeve.
[0010] Preferably, the filtering mechanism further comprises a limiting rod, the side wall of the pointed head is fixedly connected to the limiting rod, and the interior of the limiting rod is threadedly connected to the drain pipe.
[0011] Preferably, the groove is located inside the geotextile layer.
[0012] Preferably, the drain pipe is slidably connected to the interior of the fixing sleeve, and the interior of the fixing sleeve is in a hollow funnel shape.
[0013] Preferably, the side wall of the first guard plate is arc-shaped, the second guard plate is inclined toward the water outlet pipe, and the water outlet pipe faces the concrete layer.
[0014] Compared with the related art, the foundation pit support structure drainage device provided by the utility model has the following beneficial effects:
[0015] The utility model provides a drainage device for a foundation pit support structure, when the drainage pipe is placed inside the soil layer, the pointed head is installed at one end of the drainage pipe, so that the drainage pipe can enter the soil layer; after the drainage pipe is placed inside the soil layer, the drainage pipe is rotated, and the drainage pipe rotates into the interior of the limiting rod, and the drainage pipe pushes the fixing ring to squeeze the fixing sleeve and the fixing rod, so that the elastic fixing rod is stretched outward, and the stretching of the fixing rod drives the geotextile layer to move, so that the geotextile layer is located inside the soil layer in a cone shape, thereby increasing the contact area with the soil layer, and facilitating the water inside the soil layer to penetrate the geotextile layer , and at the same time increases the stability of the drainage pipe inside the soil layer; when concrete is sprayed on the surface of the soil layer, the first guard plate and the second guard plate are installed at one end of the drainage pipe, and the side wall of the first guard plate is arc-shaped, which is convenient for concrete to slide over the side wall of the first guard plate, and the second guard plate is inclined toward the direction of the outlet pipe, so that the second guard plate protects the outlet pipe to avoid a large amount of concrete being sprayed on the side wall of the outlet pipe, and the outlet pipe faces the concrete layer, thereby avoiding concrete from entering the interior of the outlet pipe and preventing the outlet pipe from being blocked, so that it is convenient to open the outlet pipe in the later stage to discharge the accumulated water in the soil layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A schematic diagram of the structure of the drainage device of the foundation pit support structure provided by the utility model;
[0017] Figure 2 for Figure 1 An enlarged schematic diagram of the structure at A shown;
[0018] Figure 3 for Figure 2 A schematic diagram of the internal structure of the second guard plate shown;
[0019] Figure 4 for Figure 2 A top view of the first guard plate structure shown;
[0020] Figure 5 for Figure 2 Schematic diagram of the internal structure of the filtering mechanism shown.
[0021] Numbers in the figure: 1. soil layer, 2. drainage ditch, 3. foundation pit retaining wall, 31. anchor rod, 32. concrete layer, 33. wire mesh, 4. drainage mechanism, 41. drainage pipe, 42. first guard plate, 43. outlet pipe, 44. screw plug, 45. second guard plate, 46. groove, 5. filtering mechanism, 51. fixing ring, 52. fixing sleeve, 53. fixing rod, 54. geotextile layer, 55. pointed head, 56. limiting rod. DETAILED DESCRIPTION
[0022] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.
[0023] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 .in Figure 1 A schematic diagram of the structure of the drainage device of the foundation pit support structure provided by the utility model; Figure 2 for Figure 1 An enlarged schematic diagram of the structure at A shown; Figure 3 for Figure 2 A schematic diagram of the internal structure of the second guard plate shown; Figure 4 for Figure 2 A top view of the first guard plate structure shown; Figure 5 for Figure 2The schematic diagram of the internal structure of the filtering mechanism is shown; the drainage device of the foundation pit supporting structure includes: a filtering mechanism 5, the filtering mechanism 5 extends into the interior of the soil layer 1; the filtering mechanism 5 includes a fixing ring 51, the side wall of the drainage pipe 41 is fixedly connected to the fixing ring 51, and the fixing ring 51 abuts against the side wall of the fixing sleeve 52; a plurality of elastic fixing rods 53 are installed between the fixing sleeve 52 and the pointed head 55, and a geotextile layer 54 is installed on the inner side wall of the fixing rod 53, and the two ends of the geotextile layer 54 are respectively connected to the pointed head 55 and the fixing sleeve 52. The filtering mechanism 5 further comprises a limiting rod 56, the side wall of the pointed head 55 is fixedly connected to the limiting rod 56, and the inside of the limiting rod 56 is threadedly connected to the drain pipe 41; when the drain pipe 41 is placed in the soil layer 1, a drilling machine is used to drill a hole in the soil layer 1, and the drain pipe 41 is placed in the hole, and the pointed head 55 is installed at one end of the drain pipe 41, so that the drain pipe 41 can enter the soil layer 1; when the drain pipe 41 is placed in the soil layer 1, the pointed head 55 is rotated to prevent the drain pipe 41 from entering the soil layer 1. The drainage pipe 41 rotates into the interior of the limiting rod 56, and the drainage pipe 41 pushes the fixing ring 51 to squeeze the fixing sleeve 52 and the fixing rod, so that the elastic fixing rod 53 is stretched outward to squeeze the soil layer, and the stretching of the fixing rod 53 drives the geotextile layer 54 to move, so that the geotextile layer 54 is located inside the soil layer in a cone shape, increasing the contact area with the soil layer, making it easier for water inside the soil layer to penetrate the geotextile layer 54, and at the same time increasing the stability of the drainage pipe 41 inside the soil layer 1.
[0024] The drainage mechanism 4 comprises a drainage pipe 41, the drainage pipe 41 is connected to the filtering mechanism 5, and the side wall of the drainage pipe 41 is provided with a groove 46 for water inlet; a first guard plate 42 is installed at one end of the drainage pipe 41, and a second guard plate 45 is symmetrically installed on the side wall of the first guard plate 42; an outlet pipe 43 is obliquely installed on the side wall of the drainage pipe 41, a screw plug 44 is installed inside the outlet pipe 43, and the outlet pipe 43 is located inside the first guard plate 42 and the second guard plate 45; when concrete is sprayed on the surface of the soil layer 1, one end of the drainage pipe 41 is installed with the screw plug 44; The first guard plate 42 and the second guard plate 45, the side wall of the first guard plate 42 is arc-shaped, which is convenient for concrete to slide over the side wall of the first guard plate 42, and the second guard plate 45 is inclined toward the direction of the outlet pipe 43, so that the second guard plate 45 protects the outlet pipe 43 to prevent a large amount of concrete from being sprayed on the side wall of the outlet pipe 43, and the outlet pipe 43 is directed toward the concrete layer 32, thereby preventing concrete from entering the interior of the outlet pipe 43 and preventing the outlet pipe 43 from being blocked, so that it is convenient to open the outlet pipe 43 in the later stage to discharge the water 1 accumulated in the soil layer.
[0025] A foundation pit retaining wall 3, wherein the drainage pipe 41 is fixed inside the foundation pit retaining wall 3; the foundation pit retaining wall 3 includes a wire mesh 33, the wire mesh 33 is laid on the surface of the soil layer 1, a plurality of anchor rods 31 are inserted into the inside of the soil layer 1, and a concrete layer 32 is poured on the surface of the wire mesh 33, in order to make the anchor rods 31 and the wire mesh 33 increase the stability of the soil layer 1, the concrete layer 32 covers the anchor rods 31 and the wire mesh 33 to further prevent the soil layer from collapsing.
[0026] A drainage ditch 2 is provided at the bottom of the concrete layer 32 to facilitate drainage of the accumulated water inside the foundation pit.
[0027] The groove 46 is located inside the geotextile layer 54; the drainage pipe 41 is slidably connected to the inside of the fixed sleeve 52. When the water inside the soil layer 1 penetrates through the geotextile layer 54 and enters the inside of the geotextile layer 54, the accumulated water enters the inside of the drainage pipe 41 through the groove 46; and the inside of the fixed sleeve 52 is in a hollow funnel shape, so that the accumulated water can enter the inside of the groove 46 after gathering inside the fixed sleeve 52.
[0028] The working principle of the drainage device of the foundation pit support structure provided by the utility model is as follows: when protecting the foundation pit, the anchor rod 31 is first driven into the soil layer, a hole is drilled inside the soil layer 1 using a drilling machine, the drainage pipe 41 is placed in the hole, and the pointed head 55 is installed at one end of the drainage pipe 41 to facilitate the drainage pipe 41 to enter the soil layer 1; after the drainage pipe 41 is placed inside the soil layer 1, the drainage pipe 41 is rotated, and the drainage pipe 41 rotates into the inside of the limiting rod 56, and the drainage pipe 41 pushes the fixing ring 51 to squeeze the fixing sleeve 52 and the fixing rod, so that the elastic fixing rod 53 is stretched outward to squeeze the soil layer, and the fixing rod 53 is stretched to drive the geotextile layer 54 to move, so that the geotextile layer 54 is located inside the soil layer in a cone shape, thereby increasing the contact area with the soil layer, facilitating the water inside the soil layer to penetrate the geotextile layer 54, and at the same time increasing the stability of the drainage pipe 41 inside the soil layer 1. The steel wire mesh 33 is laid on the slope of the foundation pit, connected to the anchor rod 31 and the drainage pipe 41, and then concrete is sprayed onto the surface of the soil layer 1; when spraying concrete, the first guard plate 42 and the second guard plate 45 are installed at one end of the drainage pipe 41, and the side wall of the first guard plate 42 is arc-shaped, which is convenient for concrete to slide over the side wall of the first guard plate 42, and the second guard plate 45 is inclined toward the direction of the outlet pipe 43, so that the second guard plate 45 protects the outlet pipe 43 to avoid a large amount of concrete being sprayed on the side wall of the outlet pipe 43, and the outlet pipe 43 faces the concrete layer 32, thereby preventing concrete from entering the inside of the outlet pipe 43 and preventing the outlet pipe 43 from being blocked, so that it is convenient to open the outlet pipe 43 in the later stage to discharge the accumulated water 1 in the soil layer. When draining, remove the screw plug 44 and open the outlet pipe 43. After the water inside the soil layer 1 passes through the geotextile layer 54 and enters the interior of the geotextile layer 54, the accumulated water enters the interior of the drain pipe 41 through the groove 46 and is discharged through the outlet pipe 43.
[0029] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A drainage device for a foundation pit support structure, characterized in that: include: A filtering mechanism (5), wherein the filtering mechanism (5) extends into the interior of the soil layer (1); A drainage mechanism (4), the drainage mechanism (4) comprising a drainage pipe (41), the drainage pipe (41) being connected to the filtering mechanism (5), the side wall of the drainage pipe (41) being provided with a groove (46) for water inlet; a first protective plate (42) being installed at one end of the drainage pipe (41), a second protective plate (45) being symmetrically installed on the side wall of the first protective plate (42); a water outlet pipe (43) being installed obliquely on the side wall of the drainage pipe (41), a screw plug (44) being installed inside the water outlet pipe (43), and the water outlet pipe (43) being located inside the first protective plate (42) and the second protective plate (45); A foundation pit retaining wall (3), wherein the drainage pipe (41) is fixed inside the foundation pit retaining wall (3).
2. The foundation pit support structure drainage device according to claim 1, characterized in that: The foundation pit retaining wall (3) comprises a steel wire mesh (33), the steel wire mesh (33) is laid on the surface of the soil layer (1), a plurality of anchor rods (31) are inserted into the interior of the soil layer (1), and a concrete layer (32) is poured on the surface of the steel wire mesh (33).
3. The foundation pit support structure drainage device according to claim 2, characterized in that: A drainage ditch (2) is provided at the bottom end of the concrete layer (32).
4. The foundation pit support structure drainage device according to claim 1, characterized in that: The filtering mechanism (5) comprises a fixing ring (51), the side wall of the drainage pipe (41) is fixedly connected to the fixing ring (51), and the fixing ring (51) contacts the side wall of a fixing sleeve (52); a plurality of elastic fixing rods (53) are installed between the fixing sleeve (52) and the pointed head (55), a geotextile layer (54) is installed and laid on the inner side wall of the fixing rod (53), and the two ends of the geotextile layer (54) are respectively connected to the pointed head (55) and the fixing sleeve (52).
5. The foundation pit support structure drainage device according to claim 4, characterized in that: The filtering mechanism (5) further comprises a limiting rod (56), the side wall of the pointed head (55) is fixedly connected to the limiting rod (56), and the interior of the limiting rod (56) is threadedly connected to the drain pipe (41).
6. The foundation pit support structure drainage device according to claim 4, characterized in that: The groove (46) is located inside the geotextile layer (54).
7. The foundation pit support structure drainage device according to claim 4, characterized in that: The drainage pipe (41) is slidably connected to the interior of the fixing sleeve (52), and the interior of the fixing sleeve (52) is in a hollow funnel shape.
8. The foundation pit support structure drainage device according to claim 2, characterized in that: The side wall of the first guard plate (42) is arc-shaped, the second guard plate (45) is inclined toward the water outlet pipe (43), and the water outlet pipe (43) faces the concrete layer (32).