CN111139825A - Cast-in-place pile obstacle removing method - Google Patents
Cast-in-place pile obstacle removing method Download PDFInfo
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- CN111139825A CN111139825A CN202010007221.7A CN202010007221A CN111139825A CN 111139825 A CN111139825 A CN 111139825A CN 202010007221 A CN202010007221 A CN 202010007221A CN 111139825 A CN111139825 A CN 111139825A
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- cast
- place pile
- pile
- protective cylinder
- steel sleeve
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention belongs to the field of building construction, and particularly relates to a cast-in-place pile obstacle clearing method, which comprises the following steps of S1, obstacle clearing operation preparation: assembling equipment, measuring the center of a hole site, laying a steel plate and positioning a full-circle slewing drilling machine; s2, locking the cast-in-place pile by using a locking device, twisting the locking device by using a full-slewing drilling machine, twisting off the cast-in-place pile in a segmented manner, and then removing the cast-in-place pile; s3, removing sediments in the pile hole by using a barrier remover, smashing the sediments by using a diamond drill bit in the rotation process of the barrier remover, and conveying the sediments out through a screw rod in the protective cylinder; the method for removing the obstacles of the cast-in-place pile is suitable for the condition that the pile is deeply embedded, can simultaneously remove sediments at the bottom of a pile hole, and has high removal efficiency and wide application range.
Description
Technical Field
The invention belongs to the field of building construction, and particularly relates to a cast-in-place pile obstacle removing method.
Background
In the engineering construction process, the situations that pile positioning is wrong due to the construction and paying-off problems, or piles left by the original demolished buildings or maintenance structures are left in the field are often encountered. The buried piles cause obstacles to subsequent construction, and the original underground piles need to be removed for smooth proceeding of the subsequent construction. When the pile is buried shallowly, the pile can be dug out by a conventional method, and when the buried underground is deeper, the conventional digging method is not applicable.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a method for removing obstacles of a cast-in-place pile, which is suitable for the situation that the pile is deeply embedded and can simultaneously remove sediments at the bottom of a pile hole.
The invention provides a method for removing obstacles of a cast-in-place pile, which comprises the following steps:
s1, obstacle removing operation preparation: assembling equipment, measuring the center of a hole site, laying a steel plate and positioning a full-circle slewing drilling machine;
s2, locking the cast-in-place pile by using a locking device, twisting the locking device by using a full-slewing drilling machine, twisting off the cast-in-place pile in a segmented manner, and then removing the cast-in-place pile;
s3, removing sediments in the pile hole by using a barrier remover, smashing the sediments by using a diamond drill bit in the rotation process of the barrier remover, and conveying the sediments out through a screw rod in the protective cylinder;
the obstacle cleaner comprises a protective cylinder, a screw rod and a driving device, wherein the screw rod is connected with the protective cylinder, the driving device drives the protective cylinder to rotate, the screw rod is arranged inside the protective cylinder, and a plurality of diamond bits are arranged on one end face of the protective cylinder.
Further, the diamond drill bits are distributed along the circumferential direction of the casing.
Furthermore, a plurality of diamond bits are distributed on the end face of the screw rod.
Furthermore, the diamond bit is fixedly connected with the protective cylinder in a welding mode.
Further, the wall thickness of the pile casing is not less than 5 mm.
Further, the driving device is a rotary drilling rig, and the protective cylinder is connected with the rotary drilling rig through threads.
Furthermore, the locking device comprises a steel sleeve and a twisted wedge block, the twisted wedge block is provided with an arc-shaped surface which is in contact with the inner wall of the steel sleeve, a twisted wedge surface which is adjacent to the cast-in-place pile to be cleared, a side surface and a top end surface, the twisted wedge surface is provided with a plurality of steps which extend perpendicular to the top end surface, and the cross section area of the twisted wedge block is monotonically reduced from the top end surface to the wedge tip direction.
Further, the step S2 specifically includes:
a. pressing the steel sleeve into the soil until a part of the pile body of the cast-in-place pile is sleeved in the steel sleeve;
b. the twisted wedge-shaped iron block is put down from a high position along the inner wall of the steel sleeve, the twisted wedge-shaped iron block is clamped between the steel sleeve and the pile body by means of self-weight impact force, the full-slewing drilling machine twists the upper portion of the steel sleeve on the ground, the steel sleeve rotates along with the steel sleeve, the twisted wedge-shaped iron block is locked along the rotation along the self-twisted shape under the driving of the steel sleeve, the pile body is clamped, and the pile body is finally twisted off under the driving of external torque;
c. and (4) hoisting the twisted off pile body out of the ground.
By the scheme, the invention at least has the following advantages: the method for removing the obstacles of the cast-in-place pile is suitable for the situation that the pile is deeply embedded, can simultaneously remove sediments at the bottom of a pile hole, and is high in removing efficiency and wide in application range.
Drawings
Fig. 1 is a schematic view of the construction of the obstacle deflector of the present invention.
Fig. 2 is a sectional view of the obstacle deflector of the present invention taken along the direction a.
Fig. 3 is a schematic view of the construction of the obstacle deflector of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but those skilled in the art will appreciate that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention.
A cast-in-place pile obstacle clearing method comprises the following steps:
s1, obstacle removing operation preparation: assembling equipment, measuring the center of a hole site, laying a steel plate and positioning a full-circle slewing drilling machine;
s2, locking the cast-in-place pile by using a locking device, twisting the locking device by using a full-slewing drilling machine, twisting off the cast-in-place pile in a segmented manner, and then removing the cast-in-place pile;
and S3, removing sediments in the pile hole by using the obstacle clearing device.
The locking device comprises a steel sleeve and a twisted wedge block, wherein the twisted wedge block is provided with an arc-shaped surface in contact with the inner wall of the steel sleeve, a twisted wedge surface adjacent to a cast-in-place pile to be cleared, a side surface and a top end surface, the twisted wedge surface is provided with a plurality of steps extending perpendicular to the top end surface, and the cross section area of the twisted wedge block is monotonically reduced from the top end surface to the wedge tip direction.
The use steps of the locking device comprise:
a. pressing the steel sleeve into the soil until a part of the pile body of the cast-in-place pile is sleeved in the steel sleeve;
b. the twisted wedge-shaped iron block is put down from a high position along the inner wall of the steel sleeve, the twisted wedge-shaped iron block is clamped between the steel sleeve and the pile body by means of self-weight impact force, the full-slewing drilling machine twists the upper portion of the steel sleeve on the ground, the steel sleeve rotates along with the steel sleeve, the twisted wedge-shaped iron block is locked along the rotation along the self-twisted shape under the driving of the steel sleeve, the pile body is clamped, and the pile body is finally twisted off under the driving of external torque;
c. and (4) hoisting the twisted off pile body out of the ground.
The obstacle cleaner comprises a protective cylinder 1, a screw rod 2 connected with the protective cylinder 1 and a driving device for driving the protective cylinder 1 to rotate, wherein the driving device is a motor in the embodiment. The screw 2 is arranged inside the casing 1. One end face of the protective cylinder 1 is provided with a plurality of diamond bits 3, the diamond bits 3 are distributed along the circumferential direction of the protective cylinder 1, the end face of the screw rod 2 is also provided with a plurality of diamond bits 3, and the diamond bits 3 are fixedly connected with the protective cylinder 1 in a welding mode. The wall thickness of the casing 1 is not less than 5 mm. In this embodiment, the driving device is a rotary drilling rig, and the casing 1 is connected with the rotary drilling rig through a thread.
The working principle of the obstacle clearing device is as follows: the rotary drilling rig drives the protective cylinder and the screw to rotate, the diamond drill bit further smashes the sediments in the rotating process, and then the sediments are conveyed out through the screw in the protective cylinder.
In conclusion, the method for removing the obstacles of the cast-in-place pile is suitable for the situation that the pile is deeply embedded, can remove sediments at the bottom of the pile hole at the same time, and is high in removing efficiency and wide in application range.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A method for removing obstacles of a cast-in-place pile is characterized by comprising the following steps: the method comprises the following steps:
s1, obstacle removing operation preparation: assembling equipment, measuring the center of a hole site, laying a steel plate and positioning a full-circle slewing drilling machine;
s2, locking the cast-in-place pile by using a locking device, twisting the locking device by using a full-slewing drilling machine, twisting off the cast-in-place pile in a segmented manner, and then removing the cast-in-place pile;
s3, removing sediments in the pile hole by using a barrier remover, smashing the sediments by using a diamond drill bit in the rotation process of the barrier remover, and conveying the sediments out through a screw rod in the protective cylinder;
the obstacle cleaner comprises a protective cylinder, a screw rod and a driving device, wherein the screw rod is connected with the protective cylinder, the driving device drives the protective cylinder to rotate, the screw rod is arranged inside the protective cylinder, and a plurality of diamond bits are arranged on one end face of the protective cylinder.
2. A cast-in-place pile obstacle clearing method as claimed in claim 1, wherein: the diamond drill bits are distributed along the circumferential direction of the protective cylinder.
3. A cast-in-place pile obstacle clearing method as claimed in claim 1, wherein: and a plurality of diamond bits are also distributed on the end surface of the screw rod.
4. A cast-in-place pile obstacle clearing method as claimed in claim 1, wherein: the diamond bit is fixedly connected with the protective cylinder in a welding mode.
5. A cast-in-place pile obstacle clearing method as claimed in claim 1, wherein: the wall thickness of the protective cylinder is not less than 5 mm.
6. A cast-in-place pile obstacle clearing method as claimed in claim 1, wherein: the driving device is a rotary drilling rig, and the protective cylinder is connected with the rotary drilling rig through threads.
7. A cast-in-place pile obstacle clearing method as claimed in claim 1, wherein: the locking device comprises a steel sleeve and a twisted wedge block, the twisted wedge block is provided with an arc-shaped surface in contact with the inner wall of the steel sleeve, a twisted wedge surface adjacent to a cast-in-place pile to be cleared, a side surface and a top end surface, the twisted wedge surface is provided with a plurality of steps extending perpendicular to the top end surface, and the cross section area of the twisted wedge block is monotonically reduced from the top end surface to the wedge tip direction.
8. A method of clearing an obstacle of a cast-in-place pile according to claim 7, characterized in that: the step S2 specifically includes:
a. pressing the steel sleeve into the soil until a part of the pile body of the cast-in-place pile is sleeved in the steel sleeve;
b. the twisted wedge-shaped iron block is put down from a high position along the inner wall of the steel sleeve, the twisted wedge-shaped iron block is clamped between the steel sleeve and the pile body by means of self-weight impact force, the full-slewing drilling machine twists the upper portion of the steel sleeve on the ground, the steel sleeve rotates along with the steel sleeve, the twisted wedge-shaped iron block is locked along the rotation along the self-twisted shape under the driving of the steel sleeve, the pile body is clamped, and the pile body is finally twisted off under the driving of external torque;
c. and (4) hoisting the twisted off pile body out of the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010007221.7A CN111139825A (en) | 2020-01-04 | 2020-01-04 | Cast-in-place pile obstacle removing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010007221.7A CN111139825A (en) | 2020-01-04 | 2020-01-04 | Cast-in-place pile obstacle removing method |
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| Publication Number | Publication Date |
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| CN111139825A true CN111139825A (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010007221.7A Pending CN111139825A (en) | 2020-01-04 | 2020-01-04 | Cast-in-place pile obstacle removing method |
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| CN (1) | CN111139825A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112681321A (en) * | 2021-01-19 | 2021-04-20 | 管青 | Sediment device for cast-in-situ bored pile |
| CN113653052A (en) * | 2021-09-02 | 2021-11-16 | 上海建工四建集团有限公司 | Obstacle clearing construction method for large-diameter underground steel-concrete composite structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001288746A (en) * | 2000-04-10 | 2001-10-19 | Edogawa Kiso Koji Kk | Existing pile crushing and removing method and its device |
| CN101358452A (en) * | 2007-07-30 | 2009-02-04 | 王薇 | Construction method and construction equipment of total rotary rapid cutting barrier clearance and pile extracting |
| CN206986894U (en) * | 2017-05-26 | 2018-02-09 | 中交一航局第一工程有限公司 | Efficient device for clearing away obstacle in Deep Bored Piles hole |
| CN207277336U (en) * | 2017-09-26 | 2018-04-27 | 中亿丰建设集团股份有限公司 | A kind of locking device for playing concrete-pile with clearing |
| CN207673296U (en) * | 2017-12-29 | 2018-07-31 | 西南交通大学 | A kind of long screw drill rod of effective trans-utilization spoir |
-
2020
- 2020-01-04 CN CN202010007221.7A patent/CN111139825A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001288746A (en) * | 2000-04-10 | 2001-10-19 | Edogawa Kiso Koji Kk | Existing pile crushing and removing method and its device |
| CN101358452A (en) * | 2007-07-30 | 2009-02-04 | 王薇 | Construction method and construction equipment of total rotary rapid cutting barrier clearance and pile extracting |
| CN206986894U (en) * | 2017-05-26 | 2018-02-09 | 中交一航局第一工程有限公司 | Efficient device for clearing away obstacle in Deep Bored Piles hole |
| CN207277336U (en) * | 2017-09-26 | 2018-04-27 | 中亿丰建设集团股份有限公司 | A kind of locking device for playing concrete-pile with clearing |
| CN207673296U (en) * | 2017-12-29 | 2018-07-31 | 西南交通大学 | A kind of long screw drill rod of effective trans-utilization spoir |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112681321A (en) * | 2021-01-19 | 2021-04-20 | 管青 | Sediment device for cast-in-situ bored pile |
| CN113653052A (en) * | 2021-09-02 | 2021-11-16 | 上海建工四建集团有限公司 | Obstacle clearing construction method for large-diameter underground steel-concrete composite structure |
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Application publication date: 20200512 |
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