Waterproof and drainage structure for soft soil foundation

Abstract

The utility model relates to the technical field of soft soil foundation water prevention and drainage, in particular to a water prevention and drainage structure for a soft soil foundation. The device comprises a drainage pile foundation. The drainage pile foundation comprises a cylindrical inner supporting framework, an inner filter screen fixedly connected to the inner supporting framework, a cylindrical outer supporting framework, a bottom plate fixedly connected to the lower end of the outer supporting framework and an outer filter screen fixedly connected to the outer supporting framework and the bottom plate. A supporting plate is arranged at the upper end of the outer supporting framework, a connecting plate is arranged on the supporting plate, a screw is fixedly connected to the supporting plate, and a through hole matched with the screw is formed in the connecting plate; the drainage pile foundations of the device are filled with gravel, the stability of the device is greatly improved, the drainage pile foundations of the device are connected, the collapse or inclination problem can be avoided, the device is provided with the buffer layer, the buffer layer can preliminarily resist soil, the soft soil foundation is prevented from making direct contact with the gravel layer, and the service life of the soft soil foundation is prolonged. Soil in the soft soil foundation is prevented from blocking the gravel layer to cause unsmooth drainage.

Description

Technical Field

[0001] The utility model relates to the technical field of soft soil foundation anti - drainage, and specifically relates to an anti - drainage structure for soft soil foundation. Background Technique

[0002] Soft soil refers to fine - grained soil deposited in coastal areas, lakes, valleys, and river beaches, which has high natural water content, large void ratio, high compressibility, and low shear strength. It has characteristics such as high natural water content, large natural void ratio, high compressibility, low shear strength, small consolidation coefficient, long consolidation time, high sensitivity, large disturbance, poor water permeability, complex layered distribution of soil layers, and large differences in physical and mechanical properties between layers. The foundation of this kind of soil quality is prone to settlement, so the foundation needs to be reinforced.

[0003] Chinese Patent CN202223043875.9 discloses "Soft Soil Foundation Treatment Structure", with the publication number CN219060004U. The device includes permeation holes, an installation ring, and a filter screen. The permeation holes are arranged on the surface of the drain pipe, an installation ring is arranged inside the permeation holes, an auxiliary structure is arranged at the bottom end of the drain pipe, a sealing structure is arranged at the top end of the drain pipe, a cover plate is arranged at the top end of the sealing structure, an auxiliary pipe is fixed at the top end of the cover plate, and a sealing plug is installed at the top end of the auxiliary pipe. However, this device has some defects: due to the soft geology and extremely high water content of the soft soil foundation, after the device is inserted into the soft soil foundation, the stability of the drain pipe is poor, and it is prone to problems such as tipping, settlement, and collapse under the action of external forces. Content of the Utility Model

[0004] In order to solve the above problems of the prior art, the utility model provides an anti - drainage structure for soft soil foundation, which increases the stability of the drainage pile foundation and avoids the problems of collapse or inclination.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An anti - drainage structure for soft soil foundation, including a drainage pile foundation inserted into the soft soil foundation. The drainage pile foundation includes a cylindrical inner support skeleton, an inner filter screen fixedly connected to the inner support skeleton, a cylindrical outer support skeleton, a bottom plate fixedly connected to the lower end of the outer support skeleton, and an outer filter screen fixedly connected to the outer support skeleton and the bottom plate. The inner support skeleton is arranged inside the outer support skeleton; a support plate is arranged at the upper end of the outer support skeleton, a connecting plate is arranged on the support plate, a screw rod is fixedly connected to the support plate, and a through - hole matching the screw rod is opened on the connecting plate.

[0006] With the above structural design, filling the drainage pile foundation with sand and gravel greatly increases the stability of the device. After the soft soil foundation passes through the sand and gravel, the water in its pores enters the inner support framework and is then discharged. The filled sand and gravel can also support the device to prevent the drainage pile foundation from being squeezed and deformed. Moreover, the drainage pile foundations of the device are interconnected, which can avoid the problems of collapse or inclination.

[0007] Preferably, a cylindrical buffer framework is arranged between the inner support framework and the outer support framework. A buffer filter screen is fixedly connected to the buffer framework. A sand and gravel layer for filling sand and gravel is formed between the inner support framework and the buffer framework, and a buffer layer for filling crushed stones is formed between the buffer framework and the outer support framework.

[0008] With the above structural design, filling the buffer layer with crushed stones can prevent the soft soil foundation from directly contacting the sand and gravel layer, and prevent the soil in the soft soil foundation from clogging the sand and gravel layer, resulting in poor drainage.

[0009] Preferably, a funnel is arranged at the upper end of the outer support framework. The lower end of the funnel is inserted into the sand and gravel layer or the buffer layer. L-shaped clamping rods are symmetrically arranged on the outer side wall of the funnel.

[0010] With the above structural design, it is convenient for the staff to fill sand or crushed stones into the device. The clamping rods can be stuck on the support framework to prevent the funnel from tipping over.

[0011] Preferably, positioning screws are fixedly connected to the upper ends of the inner support framework, the buffer framework, and the outer support framework. Connecting holes matching the positioning screws are opened on the support plate.

[0012] With the above structural design, it is convenient for the staff to disassemble the support plate.

[0013] Preferably, a plurality of lifting ropes are fixedly connected to the support plate. The lifting ropes are fixedly connected to the lifting seats, and lifting rings are fixedly connected to the lifting seats.

[0014] With the above structural design, it is convenient for the staff to lift the device.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1) Filling the drainage pile foundation of the device with sand and gravel greatly increases the stability of the device, and the drainage pile foundations of the device are interconnected, which can avoid the problems of collapse or inclination.

[0017] 2) The device is provided with a buffer layer, which can initially resist the soil, prevent the soft soil foundation from directly contacting the sand and gravel layer, and prevent the soil in the soft soil foundation from clogging the sand and gravel layer, resulting in poor drainage. Brief Description of the Drawings

[0018] Figure 1 Structural schematic diagram of the present utility model;

[0019] Figure 2 Structural schematic diagram of the installation funnel of the present utility model;

[0020] Figure 3 Structural schematic diagram of the outer support framework of the present utility model;

[0021] Figure 4 Structural schematic diagram of the funnel of the present utility model; Specific implementation manner

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 The present utility model provides a technical solution: a drainage and water prevention structure for soft soil foundation, including a drainage pile foundation 1 inserted into the soft soil foundation. The drainage pile foundation includes a cylindrical inner support framework 11, an inner filter net 14 fixedly connected to the inner support framework 11, a cylindrical outer support framework 12, a bottom plate 13 fixedly connected to the lower end of the outer support framework 12, and an outer filter net 15 fixedly connected to the outer support framework 12 and the bottom plate 13. The inner support framework 11 is arranged inside the outer support framework 12. A support plate 2 is arranged at the upper end of the outer support framework 12, a connecting plate 3 is arranged on the support plate 2, a screw rod 21 is fixedly connected to the support plate 2, and a through hole 31 matching the screw rod 21 is formed on the connecting plate 3.

[0023] A drain pipe is inserted into the inner support framework 11, and the drain pipe drains the water accumulated in the inner support framework 11.

[0024] In order to improve the strength and stability of the inner support framework 11, triangular inner supports are arranged inside the inner support framework 11.

[0025] A cylindrical buffer framework 4 is arranged between the inner support framework 11 and the outer support framework 12. A buffer filter net 41 is fixedly connected to the buffer framework 4. A sand and gravel layer for filling sand and gravel is formed between the inner support framework 11 and the buffer framework 4, and a buffer layer for filling crushed stones is formed between the buffer framework 4 and the outer support framework 12.

[0026] In this embodiment, both the buffer filter net 41 and the inner filter net 14 are made of geotextile, and the outer filter net 15 is made of a steel mesh with a mesh size larger than that of the crushed stones.

[0027] A funnel 5 is provided at the upper end of the outer support framework 12. The lower end of the funnel 5 is inserted into the gravel layer or the buffer layer. L-shaped clamping rods 51 are symmetrically arranged on the outer side wall of the funnel 5. During use, the clamping rods 51 are clamped on the outer support framework 12 and the buffer framework 4 to fill the buffer layer with gravel, and when the clamping rods 51 are clamped on the inner support framework 11 and the buffer framework 4, the gravel layer is filled with gravel.

[0028] Positioning screws 22 are fixedly connected to the upper ends of the inner support framework 11, the buffer framework 4, and the outer support framework 12. Connecting holes matching the positioning screws 22 are formed in the support plate 2.

[0029] A plurality of lifting ropes 7 are fixedly connected to the support plate 2. The lifting ropes 7 are fixedly connected to a lifting seat 71, and a lifting ring 72 is fixedly connected to the lifting seat 71.

[0030] When this device is in use, first, the staff fills the device with gravel. The staff first clamps the clamping rods 51 on the outer support framework 12 and the buffer framework 4, and then fills the buffer layer with gravel through the funnel 5. When the staff clamps the clamping rods 51 on the inner support framework 11 and the buffer framework 4, the gravel layer is filled with gravel. Next, the staff installs the support plate 2 on the positioning screws 22 on the support framework 11, the buffer framework 4, and the outer support framework 12, and then the staff uses nuts for fastening. Next, the staff operates the crane to hook the lifting ring 72 on this device. Next, the staff inserts this device into the soft soil foundation, and inserts a drain pipe into the inner support framework 11, and the drain pipe drains the water accumulated in the inner support framework 11.

[0031] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present utility model can be implemented. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration, and are not used to limit the scope under which the present utility model can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope within which the present utility model can be implemented.

[0032] The present utility model has been described with reference to the preferred embodiments, but the protection scope of the present utility model is not limited thereto. All technical solutions falling within the scope of the claims are within the protection scope of the present utility model. Without departing from the scope of the present utility model, various improvements can be made thereto and components therein can be replaced with equivalents. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any manner.

Claims

1. A drainage structure for a soft soil foundation, comprising a drainage pile foundation (1) inserted into the soft soil foundation, characterized in that: The drainage pile foundation comprises a cylindrical inner support frame (11), an inner filter (14) fixedly connected to the inner support frame (11), a cylindrical outer support frame (12), a bottom plate (13) fixedly connected to the lower end of the outer support frame (12), and an outer filter (15) fixedly connected to the outer support frame (12) and the bottom plate (13); the inner support frame (11) is arranged inside the outer support frame (12); a support plate (2) is arranged at the upper end of the outer support frame (12), a connecting plate (3) is arranged on the support plate (2), a screw rod (21) is fixedly connected to the support plate (2), and a through hole (31) matching the screw rod (21) is provided on the connecting plate (3).

2. The waterproof and drainage structure for soft soil foundation according to claim 1, characterized in that: A cylindrical buffer frame (4) is arranged between the inner support frame (11) and the outer support frame (12); a buffer filter screen (41) is fixedly connected to the buffer frame (4); a sand and gravel layer for filling sand and gravel is formed between the inner support frame (11) and the buffer frame (4); and a buffer layer for filling crushed stone is formed between the buffer frame (4) and the outer support frame (12).

3. The waterproof and drainage structure for soft soil foundation according to claim 2, characterized in that: A funnel (5) is arranged at the upper end of the outer support frame (12), the lower end of the funnel (5) is inserted into a sandstone layer or a buffer layer, and L-shaped clamping rods (51) are symmetrically arranged on the outer side wall of the funnel (5).

4. The waterproof and drainage structure for soft soil foundation according to claim 2, characterized in that: The upper ends of the inner support frame (11), the buffer frame (4) and the outer support frame (12) are all fixedly connected to the positioning screw (22), and the support plate (2) is provided with a connecting hole matching the positioning screw (22).

5. A waterproof and drainage structure for soft soil foundation according to claim 1 or 4, characterized in that: A plurality of lifting ropes (7) are fixedly connected to the support plate (2), the lifting ropes (7) are fixedly connected to a lifting seat (71), and a lifting ring (72) is fixedly connected to the lifting seat (71).

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