CN105369807B

CN105369807B - Pile pulling device and pile pulling method

Info

Publication number: CN105369807B
Application number: CN201510794943.0A
Authority: CN
Inventors: 莫兴虎; 张忠良; 汪阔海; 李龙; 叶祥军; 程军; 濮唯铭; 王良伟; 孙海洋; 游成林
Original assignee: China Construction Eighth Engineering Division Co Ltd
Current assignee: China Construction Eighth Engineering Division Co Ltd
Priority date: 2015-11-18
Filing date: 2015-11-18
Publication date: 2020-08-04
Anticipated expiration: 2035-11-18
Also published as: CN105369807A

Abstract

The invention discloses a pile pulling device and a pile pulling method. The side of waiting to pull out the stake bottom is located to the in-process of pile pulling using the snap ring card, treats the pile pulling and does not bear the pulling force like this at the pile pulling in-process, has consequently solved the easy cracked problem of pile pulling from the top. The pile pulling device and the pile pulling method have wide application range, strong universality on small piles, high pile pulling speed, good guarantee on the integrity of pile bodies and small destructiveness on soil bodies.

Description

Pile pulling device and pile pulling method

Technical Field

The invention relates to the field of constructional engineering, in particular to a pile pulling device and a pile pulling method.

Background

When the construction of removing obstacles, often meet the stake of original old building, and mostly be small-size square pile, the buried depth is shallow, and is in large quantity, pulls out comparatively difficultly. In the prior art, pile pulling is mostly carried out through the top of tractive stake, but this kind of mode easily causes destruction to the square pile when pulling out the square pile, then hardly pulls out the surplus portion if the stake fracture.

Disclosure of Invention

In order to solve the technical problems, the invention provides a pile pulling device and a pile pulling method.

The technical scheme of the invention provides a pile pulling device, which comprises: and the bottom of the U-shaped steel plate pile is provided with a clamping ring.

The pile pulling device of the invention is further improved in that: the U-shaped steel plate pile comprises a bottom plate and two side plates, wherein the side plates are respectively positioned on two sides of the bottom plate.

The pile pulling device of the invention is further improved in that: the clamping ring comprises a clamping plate and two stiffening plates, the clamping plate is parallel to the bottom plate of the U-shaped steel sheet pile, and two sides of the clamping plate are connected to the side plates through the stiffening plates respectively.

The pile pulling device of the invention is further improved in that: and the bottom of the U-shaped steel sheet pile extends to the lower part of the clamping ring to form a pry bar.

The pile pulling device of the invention is further improved in that: and the top of the U-shaped steel sheet pile is provided with a connecting hole for connecting the pile extractor.

The technical scheme of the invention also provides a pile pulling method, which comprises the following steps:

1) sleeving a clamping ring of the pile pulling device on the top of the pile to be pulled;

2) inserting the pile pulling device into the soil layer along the pile to be pulled by using a pile pulling machine;

3) inclining the pile pulling device by a preset angle to enable the top edge of the clamping ring to be clamped on the side face of the bottom of the pile to be pulled;

4) keeping the pile pulling device in an inclined state, and pulling out the pile pulling device together with the pile to be pulled out by using a pile pulling machine.

The pile pulling method of the invention is further improved in that: the inclination angle of the pile pulling device is 3-5 degrees.

The pile pulling device and the pile pulling method have the beneficial effects that: the side of waiting to pull out the stake bottom is located to the in-process of pile pulling using the snap ring card, treats the pile pulling and does not bear the pulling force like this at the pile pulling in-process, has consequently solved the easy cracked problem of pile pulling from the top. The pile pulling device and the pile pulling method have wide application range, strong universality on small piles, high pile pulling speed, good guarantee on the integrity of pile bodies and small destructiveness on soil bodies.

Drawings

FIG. 1 is a side view of a pile pulling apparatus according to the present invention;

FIG. 2 is another side view of the pile pulling apparatus of the present invention;

FIG. 3 is a cross-sectional view of the pile pulling apparatus of the present invention;

fig. 4 to 6 are schematic views of pile pulling processes.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It should be noted that the structures, ratios, sizes, and the like shown in the drawings attached to the present specification are only used for matching the disclosure of the present specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions of the present invention, so that the present invention has no technical essence, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

The pile pulling device of the invention is described below with reference to the accompanying drawings.

As shown in fig. 1 to 3, the pile pulling device of the present invention includes a U-shaped steel sheet pile 10, and a snap ring 20 is disposed at the bottom of the U-shaped steel sheet pile 10. The U-shaped steel sheet pile 10 includes a bottom plate 11 and two side plates 12, and the side plates 12 are respectively located at two sides of the bottom plate 11. The side plates 12 may enhance the strength of the U-shaped steel sheet pile 10. The snap ring 20 comprises a buckle plate 21 and two stiffening plates 22, the buckle plate 21 is parallel to the bottom plate 11 of the U-shaped steel sheet pile, and two sides of the buckle plate 21 are respectively connected to the side plates 12 of the U-shaped steel sheet pile 10 through one stiffening plate 22. The buckling plate 21 and the stiffening plate 22 are made of steel plates, and the buckling plate 21, the stiffening plate 22 and the U-shaped steel plate pile 10 are connected in a welding mode. The buckling plate 21, the stiffening plate 22 and the U-shaped steel sheet pile 10 are enclosed to form a clamping ring 20.

The bottom of the U-shaped steel sheet pile 10 extends to the lower part of the clamping ring 20 to form a pry bar 13. The pry bar 13 can be abutted against the bottom of the pile to be pulled in the pile pulling process, so that the clamping ring 20 can be clamped on the side surface of the pile to be pulled conveniently. The top of the U-shaped steel sheet pile 10 is provided with a connecting hole 14 for connecting the pile extractor.

The pile pulling method of the invention is described below with reference to the accompanying drawings.

The pile pulling method comprises the following steps:

1) as shown in fig. 4, the snap ring 20 of the pile pulling device 40 is sleeved on the top of the pile 30 to be pulled.

2) The pile extractor device 40 is inserted inside the ground along the pile to be extracted 30 using a pile extractor (the pile extractor is not shown in fig. 4). The bottom plate 11 of the U-shaped steel sheet pile 10 is tightly attached to the pile 30 to be pulled during the insertion of the pile pulling device 40. The inserting depth of the U-shaped steel sheet pile 10 is slightly smaller than the bottom depth of the pile 30 to be pulled. After the insertion, the clamping ring 20 surrounds the bottom of the pile 30 to be pulled.

3) As shown in fig. 5, after the insertion of the U-shaped steel sheet pile 10 is completed, the pile pulling device 40 is tilted by a predetermined angle, so that the top edge of the snap ring 20 is snapped to the side of the bottom of the pile 30 to be pulled. The inclination angle of the pile pulling device 40 is 3 ° to 5 ° in this embodiment. The pry bar 13 at the bottom of the U-shaped steel sheet pile 10 abuts against the side face of the pile to be pulled 30 in the tilting process, and the pry bar 13 is arranged so that the top edge of the clamping ring 20 can be clamped and fixed on the side face of the pile to be pulled 30 more tightly.

4) As shown in fig. 6, the pile extractor 40 is pulled out together with the pile 30 to be extracted using the pile extractor with the pile extractor 40 kept in the inclined state.

The pile pulling device and the pile pulling method have the beneficial effects that: the clamping ring 20 is clamped on the side surface of the bottom of the pile to be pulled 30 in the pile pulling process, so that the pile to be pulled 30 does not bear pulling force in the pile pulling process, and the problem that the pile is easy to break when being pulled from the top is solved. The pile pulling device and the pile pulling method have wide application range, strong universality on small piles, high pile pulling speed, good guarantee on the integrity of pile bodies and small destructiveness on soil bodies.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A pile pulling device is characterized by comprising: the pile pulling device comprises a U-shaped steel sheet pile, a clamping ring and a prying bar, wherein the clamping ring is arranged at the bottom of the U-shaped steel sheet pile, the bottom of the U-shaped steel sheet pile extends to the position below the clamping ring to form the prying bar, and the prying bar can abut against the bottom of a pile to be pulled in the pile pulling process, so that the clamping ring can be conveniently clamped on the side face of the pile to be pulled; the U-shaped steel plate pile comprises a bottom plate and two side plates, wherein the side plates are respectively positioned on two sides of the bottom plate; the clamping ring comprises a clamping plate and two stiffening plates, the clamping plate is parallel to the bottom plate of the U-shaped steel sheet pile, and two sides of the clamping plate are connected to the side plates through the stiffening plates respectively.

2. The pile pulling apparatus according to claim 1, wherein: and the top of the U-shaped steel sheet pile is provided with a connecting hole for connecting the pile extractor.

3. A pile pulling method using the pile pulling apparatus according to claim 1, characterized by comprising the steps of:

2) inserting the pile pulling device into the soil layer along the pile to be pulled by using a pile pulling machine, wherein a bottom plate of the U-shaped steel sheet pile clings to the pile to be pulled in the insertion process of the pile pulling device;

3) inclining the pile pulling device by a preset angle, so that the top edge of the clamping ring is clamped on the side surface of the bottom of the pile to be pulled, and the pry bar at the bottom of the U-shaped steel sheet pile abuts against the side surface of the pile to be pulled;

4. A pile pulling method according to claim 3, characterized in that: the inclination angle of the pile pulling device is 3-5 degrees.