Anti-settlement device for pile foundation of soft soil foundation

Abstract

The utility model relates to the technical field of soft soil foundation waterproof and drainage structures, in particular to an anti-sedimentation device of a soft soil foundation pile foundation. The device comprises a bearing plate used for being connected with a pile foundation, the bearing plate is in a circular ring shape, an air bag is fixedly connected to the bearing plate, and an air inlet and an air outlet are formed in the air bag; a supporting ring is arranged on the outer side of the bearing plate, the bearing plate is fixedly connected with the supporting ring through a supporting rod, and the air bag is arranged between the bearing plate and the supporting ring. The bearing plate is provided with a locking assembly used for being connected with a pile foundation. When the pile foundation is pulled out, the influence of the device on the pile foundation can be reduced, and the difficulty of pulling out the pile foundation from soft soil is greatly reduced; the device is easy and fast to install and can be suitable for pile foundations with different diameters.

Description

Technical Field

[0001] The utility model relates to the technical field of anti - drainage structures for soft soil foundations, and particularly relates to a settlement prevention device for pile foundations in soft soil foundations. Background Technique

[0002] Soft soil refers to fine - grained soil deposited in coastal areas, lakes, marshes, valleys, and river beaches, with 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 significant differences in physical and mechanical properties between layers. The foundation of this kind of soil is prone to settlement, so the foundation needs to be reinforced.

[0003] At present, the main methods for treating soft soil foundations widely used in engineering mainly include two categories: physical methods and chemical methods. Physical methods include dynamic compaction, vacuum preloading, surcharge preloading, etc. These methods are based on the basic mechanisms of mechanical reinforcement and soil consolidation. However, due to the large water content in soft soil foundations, the permeable pile foundations inserted into soft soil foundations are prone to settlement.

[0004] Chinese Patent CN202320919407.9 discloses "A Settlement Prevention Structure for Soft Soil Foundations", with the publication number CN220225231U. The device includes a base pile and a bearing plate fixedly connected to the base pile. An installation groove is opened on one side of the bearing plate, a fixing groove is opened on the other side of the bearing plate, and a sliding groove communicating with the installation groove is opened on the side wall of the bearing plate; a fixing rod that can be inserted into an adjacent fixing groove is placed in the installation groove. A sliding rod is fixedly connected to the fixing rod, and the sliding rod is placed in the sliding groove and extends to the outside of the bearing plate. However, this device has some defects: during use, the bearing plate of this device is closely attached to the soft soil, which greatly increases the difficulty of pulling out this device from the soft soil under the action of the soft soil. Content of the Utility Model

[0005] In order to solve the problems of the above - mentioned existing technologies, the utility model provides a settlement prevention device for pile foundations in soft soil foundations, which can reduce the influence of the settlement prevention device on the pile foundation when pulling out the pile foundation, and greatly reduce the difficulty of pulling out the pile foundation from the soft soil.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A settlement prevention device for pile foundations in soft soil foundations includes a bearing plate for connecting the pile foundation. The bearing plate is circular - ring - shaped, and an airbag is fixedly connected to the bearing plate. An air inlet and an air outlet are arranged on the airbag; a support ring is arranged outside the bearing plate, and the bearing plate is fixedly connected to the support ring through a support rod. The airbag is arranged between the bearing plate and the support ring; a locking component for connecting the pile foundation is arranged on the bearing plate.

[0007] With the above structural design, during use, the airbag is inflated to increase the contact area between the device and the soft soil foundation and the buoyancy on the soft soil, thereby preventing the settlement of the pile foundation. When disassembling the pile foundation, the airbag is deflated so that the soft soil cannot act on the device, thereby reducing the difficulty of pulling out the pile foundation from the soft soil.

[0008] Preferably, a plurality of airbags are provided, and the airbags are arranged in a circular ring along the circumference of the bearing plate. Adjacent airbags are connected by an air pipe; the airbags are detachably connected to the bearing plate and the support ring.

[0009] With the above structural design, when one of the airbags is damaged, it is convenient to replace the airbag.

[0010] Preferably, the locking assembly includes vertical rods fixedly connected to the bearing plate, and a plurality of vertical rods are provided and arranged in a circular ring along the bearing plate.

[0011] With the above structural design, a flange ring is pre-fixed at the upper end of the pile foundation, and the flange ring is correspondingly sleeved on the vertical rod, thereby connecting the device to the pile foundation. The connection structure is simple and fast.

[0012] Preferably, the locking assembly includes a locking plate slidably connected to the bearing plate and a push plate fixedly connected to the locking plate, and the push plate is in contact with the airbag.

[0013] With the above structural design, the airbag expands to push the locking plate, so that the locking plate clamps the pile foundation. The installation is fast and simple, and there is no need to pre-install a flange ring on the pile foundation.

[0014] Preferably, an extension plate is inserted into the locking plate, a fixing bolt is inserted through the locking plate, and an anti-slip rubber is fixedly connected to the end of the extension plate.

[0015] With the above structural design, it can be applied to pile foundations of different diameters, and the anti-slip rubber can increase the friction between the extension plate and the pile foundation.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] 1) When pulling out the pile foundation, it can reduce the influence of the device on the pile foundation and greatly reduce the difficulty of pulling out the pile foundation from the soft soil.

[0018] 2) The device is simple and fast to install and can be applied to pile foundations of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of Embodiment 1 of the present utility model;

[0020] Figure 2 is a schematic structural diagram of Embodiment 2 of the present utility model;

[0021] Figure 3 For the present utility model Figure 2 is a schematic enlarged view of the structure at position A in the present utility model; Specific embodiments

[0022] Embodiment 1:

[0023] Please refer to Figure 1 , the present utility model provides a technical solution: a settlement prevention device for soft soil foundation piles, including a bearing plate 1 for connecting the piles. The bearing plate 1 is circular ring-shaped. An airbag 2 is fixedly connected to the bearing plate 1. An air inlet 21 and an air outlet 22 are provided on the airbag 2. A support ring 3 is arranged outside the bearing plate 1. The bearing plate 1 is fixedly connected to the support ring 3 through a support rod 31. The airbag 2 is arranged between the bearing plate 1 and the support ring 3. A locking component for connecting the piles is arranged on the bearing plate 1.

[0024] A plurality of support rods 31 are provided and arranged in a circular ring along the circumference of the bearing plate 1.

[0025] A plurality of airbags 2 are provided. The airbags 2 are arranged in a circular ring along the circumference of the bearing plate 1. Adjacent airbags 2 are communicated through an air pipe 29. The airbag 2 is detachably connected to the bearing plate 1 and the support ring 3. During use, the head end of the air pipe 29 is installed at the air inlet of the first airbag, and the tail end of the air pipe 29 is installed at the air outlet of the second airbag, and so on to connect all the airbags.

[0026] The locking component includes a vertical rod 4 fixedly connected to the bearing plate 1. A plurality of vertical rods 4 are provided and arranged in a ring along the bearing plate 1.

[0027] When the device is in use, first, the staff welds a flange ring corresponding to the bearing plate 1 at the upper end of the pile. Then, the staff places the device on the soft soil foundation. Next, the staff inserts the pile through the bearing plate 1 from top to bottom into the soft soil foundation. Next, the staff rotates the device so that the vertical rod 4 passes through the flange ring. Next, the staff uses an air pump to inflate the airbag 2, and the installation of the device is completed.

[0028] Embodiment 2:

[0029] As Figure 2 , Figure 3 shown, Embodiment 2 is different from Embodiment 1. The locking component includes a locking plate 51 slidably connected to the bearing plate 1 and a push plate 52 fixedly connected to the locking plate 51. The push plate 52 is in contact with the airbag 2. An extension plate 61 passes through the locking plate 51. A fixing bolt 62 passes through the locking plate 51. An anti-slip rubber 63 is fixedly connected to the end of the extension plate 61. Other parts are in accordance with Embodiment 1.

[0030] When this device is in use, first, the staff member pulls the extension plate 61 and fixes the extension plate with the fixing bolt 62 to make the device match the diameter of the pile foundation. Next, the staff member inserts the pile foundation into the soft soil foundation. Then, the staff member sleeves the device on the upper end of the pile foundation. Next, the staff member uses an air pump to inflate the airbag 2. The airbag 2 gradually expands and then gradually pushes the locking plate 51 to move. The airbag 2 is tightened, and the extension plate 61 tightly holds the pile foundation, and the installation of this device is completed.

[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 who are familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of this utility model. Therefore, they do not have technical substantial significance. Any modification of the structure, change in the ratio relationship, or adjustment of the size, without affecting the effects that this 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 this 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 of implementation of this utility model. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope that this utility model can implement.

[0032] The above has described this utility model with reference to the preferred embodiments, but the protection scope of this utility model is not limited thereto. All technical solutions falling within the scope of the claims are within the protection scope of this utility model. Without departing from the scope of this utility model, various improvements can be made to it 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 way.

Claims

1. An anti-settlement device for pile foundations in soft soil foundations, comprising a bearing plate (1) for connecting the pile foundations, characterized in that: The bearing plate (1) is annular, and an airbag (2) is fixedly connected to the bearing plate (1). An air inlet (21) and an air outlet (22) are arranged on the airbag (2); a support ring (3) is arranged outside the bearing plate (1), and the bearing plate (1) is fixedly connected to the support ring (3) through a support rod (31). The airbag (2) is arranged between the bearing plate (1) and the support ring (3); a locking assembly for connecting to a pile foundation is arranged on the bearing plate (1).

2. The anti-settlement device for soft soil foundation pile foundation according to claim 1, characterized in that: A plurality of the airbags (2) are arranged, and the airbags (2) are arranged in a circumferential annular array along the bearing plate (1). Adjacent airbags (2) are communicated through an air delivery pipe (29); the airbags (2) are detachably connected to the bearing plate (1) and the support ring (3).

3. The anti-settlement device for soft soil foundation pile foundation according to claim 1 or 2, characterized in that: The locking assembly includes vertical rods (4) fixedly connected to the bearing plate (1), and a plurality of the vertical rods (4) are arranged in an annular array along the bearing plate (1).

4. The anti-settlement device for pile foundation in soft soil foundation according to claim 1 or 2, characterized in that: The locking assembly includes a locking plate (51) slidably connected to the bearing plate (1) and a push plate (52) fixedly connected to the locking plate (51), and the push plate (52) is in contact with the airbag (2).

5. The anti-settlement device for pile foundation in soft soil foundation according to claim 4, characterized in that: An extension plate (61) is inserted into the locking plate (51), a fixing bolt (62) is inserted through the locking plate (51), and an anti-slip rubber (63) is fixedly connected to the end of the extension plate (61).

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