CN219218953U

CN219218953U - Filling pile for treating collapsible loess foundation for fan construction

Info

Publication number: CN219218953U
Application number: CN202223530710.4U
Authority: CN
Inventors: 岳仁强; 吴光贤; 张伟莉; 闫超凡
Original assignee: Henan Huamin Electric Power Design Co ltd
Current assignee: Henan Huamin Electric Power Design Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-20
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to a filling pile for treating collapsible loess foundation of fan construction, which effectively solves the problem that pile hole walls are easy to collapse after a immersed tube is pulled out by a compaction method; the technical scheme includes that the device comprises a pore-forming tube and a filling tube, wherein the filling tube is coaxially arranged in the pore-forming tube in a penetrating manner and can axially move relative to the pore-forming tube, the lower end of an opening at the upper end of the pore-forming tube is closed, an inserting hole is formed at the lower end of the pore-forming tube, a split type conical head is arranged at the lower end of the pore-forming tube and inserted in the inserting hole to enable the lower end of the pore-forming tube to form a sharp cone, the lower end of the filling tube is contacted with the conical head, when the filling tube moves downwards relative to the pore-forming tube, the filling tube can eject the conical head out of the pore-forming tube to enable the conical head to fall off from the pore-forming tube, and the pore-forming tube extends out of the pore-forming tube from the inserting hole; the utility model can effectively avoid the falling and collapse of the soil body of the lower hole wall of the soft soil, thereby improving the pile forming quality of the hole forming and filling pile.

Description

Filling pile for treating collapsible loess foundation for fan construction

Technical Field

The utility model relates to the field of foundation treatment, in particular to a filling pile for treating collapsible loess foundation for fan construction.

Background

Collapsible loess is a special geology, which has higher general strength and smaller compressibility under the condition of not being soaked by water, but is soaked by water under a certain pressure, so that the soil structure can be quickly destroyed, larger additional subsidence is generated, and the strength is quickly reduced; when the wind driven generator is built, if collapsible loess geology is encountered, foundation treatment is needed; the method for treating collapsible loess foundation mainly comprises dynamic compaction, bedding, compaction, chemical reinforcement, pre-soaking, etc., wherein the compaction method is a common treatment method, and mainly comprises the steps of driving steel pipes with closed lower ends downwards in a foundation range according to a certain density to compact soil in all directions, forming pile holes at the positions where the steel pipes are driven, and then pouring mortar into the pile holes to form cast-in-place piles.

After the compaction method is used for driving the steel pipe into the soil layer, the steel pipe needs to be pulled out due to the sealing of the lower end of the steel pipe, and then grouting is carried out in the hole, for example, the application number is as follows: utility model patent and application number of CN 201710777779.1: utility model patent and application number of CN 201910649025.7: in the patent of CN200810140724.0, due to loose collapsible loess geological structure, during or after the immersed tube is pulled out, soil on the wall of the hole will collapse into the pile hole, and even the pile hole will collapse, resulting in failure of hole forming.

Disclosure of Invention

The utility model provides a cast-in-place pile for treating a collapsible loess foundation for fan construction, which aims to solve the problem that pile hole walls are easy to collapse after a immersed tube is pulled out by an extrusion compaction method.

The technical scheme that the device comprises a pore-forming tube and a filling tube, wherein the filling tube is coaxially arranged in the pore-forming tube in a penetrating way and can axially move relative to the pore-forming tube, the lower end of the opening at the upper end of the pore-forming tube is closed, the lower end of the pore-forming tube is provided with an inserting hole, the lower end of the pore-forming tube is provided with a split type conical head, the conical head is inserted in the inserting hole to enable the lower end of the pore-forming tube to form a sharp cone, the lower end of the filling tube is contacted with the conical head, when the filling tube moves downwards relative to the pore-forming tube, the filling tube can eject the conical head out of the pore-forming tube, the conical head falls off from the pore-forming tube, and the filling tube extends out of the pore-forming tube from the inserting hole.

The lower end of the pore-forming tube is provided with a magnet which adsorbs the conical head.

The anti-lost steel wire rope is connected between the pore-forming pipe and the conical head, the lower end surface of the pore-forming pipe is provided with a containing groove, and when the conical head is in an inserting state, the anti-lost steel wire rope is plugged in the containing groove.

A plurality of annular retainers which are distributed along the axial direction are arranged between the pore-forming pipe and the filling pipe, the filling pipe passes through the annular holes of the annular retainers, and friction is generated between the annular retainers and the filling pipe.

The lower end of the pouring tube is an oblique incision, and the conical head can be pushed to one side.

The utility model can effectively avoid the falling and collapse of the soil body of the lower hole wall of the soft soil, thereby improving the pile forming quality of the hole forming and filling pile.

Drawings

FIG. 1 is a front cross-sectional view of the present utility model in the form of a hole.

Fig. 2 is a front cross-sectional view illustrating grouting according to the present utility model.

Fig. 3 is an enlarged view of the position a in fig. 1.

Fig. 4 is an enlarged view of the position B in fig. 2.

Detailed Description

The utility model comprises a hole forming tube 1 and a pouring tube 2, wherein the pouring tube 2 is coaxially arranged in the hole forming tube 1 in a penetrating way and can axially move relative to the hole forming tube 1, the pouring tube 2 can be driven into a soil layer along with the hole forming tube 1, the upper end of the hole forming tube 1 is opened, the lower end of the hole forming tube 1 is closed, an inserting hole 3 is formed in the lower end of the hole forming tube 1, a split type cone head 4 is arranged at the lower end of the hole forming tube 1, the cone head 4 is inserted in the inserting hole 3 to form a sharp cone at the lower end of the hole forming tube 1, so that the hole forming tube 1 can be smoothly driven into the soil layer, the lower end of the pouring tube 2 is contacted with the cone head 4, when the pouring tube 2 moves downwards relative to the hole forming tube 1, the cone head 4 is ejected out of the hole forming tube 1, the cone head 4 falls off from the hole forming tube 1, and the pouring tube 2 extends out of the hole forming tube 1 from the inserting hole 3; after the hole forming pipe 1 and the pouring pipe 2 are driven into the soil layer, the pouring pipe 2 pushes the conical head 4 to extend out of the hole forming pipe 1, grouting equipment is connected to the upper end of the pouring pipe 2, grouting can be performed to the hole without pulling out the hole forming pipe 1, the hole forming pipe 1 and the pouring pipe 2 are lifted up synchronously along with the height of grouting in the hole during grouting until the hole is filled, and the hole forming pipe 1 and the pouring pipe 2 are completely pulled out of the hole.

The lower end of the pore-forming tube 1 is provided with a magnet 5, and after the conical head 4 is inserted into the lower end of the pore-forming tube 1, the magnet 5 adsorbs the conical head 4, so that the conical head 4 cannot fall off by itself.

The anti-lost steel wire rope 6 is connected between the pore-forming pipe 1 and the conical head 4, so that the conical head 4 is prevented from falling off from the plug hole 3 and being lost, the accommodating groove 7 is formed in the lower end face of the pore-forming pipe 1, and when the conical head 4 is in a plug-in state, the anti-lost steel wire rope 6 is plugged in the accommodating groove 7.

The hole forming tube 1 and the pouring tube 2 are provided with a plurality of annular retainers 8 which are distributed along the axial direction, the annular retainers 8 are fixed with the inner wall of the hole forming tube 1, the pouring tube 2 passes through the annular holes of the annular retainers 8 and is in interference fit with the annular retainers 8, and the annular retainers 8 are made of rubber, so that friction force exists between the annular retainers 8 and the pouring tube 2, and the pouring tube 2 cannot slide downwards when no hammering occurs.

The lower end of the pouring tube 2 is an oblique incision, so that after the cone head 4 is ejected from the inserting hole 3 by the pouring tube 2, the cone head 4 can be pushed to one side to avoid the lower port of the pouring tube 2.

When the grouting device is used, the conical head 4 is inserted into the lower end of the pore-forming tube 1 and is adsorbed by the magnet 5, the anti-lost steel wire rope 6 is received in the accommodating groove 7, the lower end of the grouting tube 2 is contracted in the pore-forming tube 1, at the moment, the whole pore-forming tube 1 is a straight tube with the tip end, the pore-forming tube 1 and the grouting tube 2 are beaten into a soil layer together at a pile position where a wire is placed in advance, the upper end of the grouting tube 2 does not leak out of the pore-forming tube 1 during driving, the grouting tube 2 does not axially move relative to the pore-forming tube 1 during driving, after the pore-forming tube 1 is driven to a designed depth, the pore-forming tube 1 and the grouting tube 2 are synchronously lifted slightly, a space for falling is provided for the conical head 4 at the bottom of the pore, then the pore-forming tube 1 is fixed, the upper end of the grouting tube 2 is hammered, the lower end of the grouting tube 2 is enabled to move downwards relative to the pore-forming tube 1, the conical head 4 is separated from the lower end of the pore-forming tube 1 and pushed to one side, the lower end of the grouting tube 2 extends out of the pore-forming tube 1, and then grouting equipment and the upper end of the grouting tube 2 are connected with the upper end of the pore-forming tube 2 until the grouting tube 1 and the grouting tube is completely and completely pulled out of the grouting tube 1.

According to the utility model, through the detachable conical head 4 and the pouring pipe 2 penetrating into the pore-forming pipe 1, grouting can be performed into the pore without pulling out the pore-forming pipe 1 after pore-forming, and falling and collapse of a pore wall soil body under soft soil can be effectively avoided, so that the pile-forming quality of the pore-forming and pouring piles is improved.

Claims

1. The utility model provides a fan construction collapsibility loess foundation handles and uses bored concrete pile, a serial communication port, including pore-forming tube (1) and filling tube (2), filling tube (2) coaxial wear to establish in pore-forming tube (1) and can be for pore-forming tube (1) axial displacement, pore-forming tube (1) upper end opening lower extreme is sealed, pore-forming tube (1) lower extreme is opened there is spliced eye (3), pore-forming tube (1) lower extreme is equipped with split type conical head (4), conical head (4) are pegged graft in spliced eye (3) make the lower extreme of pore-forming tube (1) form a pointed cone, the lower extreme of filling tube (2) contacts with conical head (4), when filling tube (2) move down for pore-forming tube (1), filling tube (2) can be ejecting conical head (4) from pore-forming tube (1), make conical head (4) drop from pore-forming tube (1), and filling tube (2) stretch out outside pore-forming tube (1) from spliced eye (3).

2. The bored concrete pile for treating collapsible loess foundation for fan construction as set forth in claim 1, wherein a magnet (5) is installed at the lower end of said hole forming pipe (1), and said magnet (5) attracts said conical head (4).

3. The bored concrete pile for treating collapsible loess foundation for fan construction as set forth in claim 1, wherein an anti-lost steel wire rope (6) is connected between the hole forming pipe (1) and the conical head (4), a containing groove (7) is formed in the lower end face of the hole forming pipe (1), and when the conical head (4) is in an inserting state, the anti-lost steel wire rope (6) is plugged into the containing groove (7).

4. The filling pile for collapsible loess foundation treatment for fan construction as claimed in claim 1, wherein a plurality of annular retainers (8) distributed along the axial direction are arranged between the hole forming tube (1) and the filling tube (2), the filling tube (2) passes through the annular holes of the annular retainers (8), and friction is provided between the annular retainers (8) and the filling tube (2).

5. The filling pile for treating collapsible loess foundation for fan construction as set forth in claim 1, wherein the lower end of the filling pipe (2) is a diagonal cut, and the conical head (4) can be pushed to one side.