CN111501752A - Pile cutting device and method - Google Patents
Pile cutting device and method Download PDFInfo
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- CN111501752A CN111501752A CN202010449322.XA CN202010449322A CN111501752A CN 111501752 A CN111501752 A CN 111501752A CN 202010449322 A CN202010449322 A CN 202010449322A CN 111501752 A CN111501752 A CN 111501752A
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- pile
- cutting
- drill rod
- pile body
- slurry
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- 238000005520 cutting process Methods 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000002347 injection Methods 0.000 claims abstract description 21
- 239000007924 injection Substances 0.000 claims abstract description 21
- 239000002002 slurry Substances 0.000 claims description 36
- 238000005507 spraying Methods 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000011440 grout Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 229910000278 bentonite Inorganic materials 0.000 claims description 4
- 239000000440 bentonite Substances 0.000 claims description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 229910000997 High-speed steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003014 reinforcing effect Effects 0.000 description 11
- 238000009412 basement excavation Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
-
- 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
- E02D9/005—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof removing the top of placed piles of sheet piles
-
- 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
- E02D9/04—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by cutting-off under water
Landscapes
- Engineering & Computer Science (AREA)
- 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 provides a pile cutting device, comprising: a drill stem, the drill stem being hollow; the injection device is arranged at one end of the drill rod; and the pressurization and power system is connected with the drill rod. A pile cutting method using the pile cutting device is also provided. According to the embodiment of the invention, the pile cutting method is adopted before the initial setting of the pile body, the drill rod and the injection device are utilized to form the cutting area at the elevation position of the pile body, and the pile body is cut off from the cutting area after being solidified, so that the safe, simple and high-quality pile cutting effect is achieved.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a pile cutting device and method.
Background
In order to ensure that the top of the engineering pile is poured compactly in the engineering construction process, the engineering pile is usually over-poured to a certain height above the elevation of the pile top, and after the strength of the pile body is increased, the over-poured part of the pile body is cut. Common cast engineering piles are classified into two types, namely non-reinforced piles and reinforced piles. The common pile cutting methods for the two engineering piles include the following methods:
a common pile cutting method for an engineering pile without reinforcing bars is a handheld cutter cutting method. The method comprises the steps of cutting off a pile head by a cutting machine after earth is excavated to a designed elevation, and then excavating and transporting the cut pile head away along with the excavation of an excavator, or transporting the cut pile head out of an operation surface by using lifting equipment. Because the method is carried out after the earth excavation, the excavator needs to firstly excavate the earth between the piles, so that the bucket of the excavator often breaks the pile body, and the breakage often occurs below the designed pile top elevation. Thereby leading to pile mass reinforcement treatment after earth excavation.
A common method for reinforcing engineering piles is to cut a protective layer area into a kerf along the periphery of the pile by a handheld cutter after earth excavation is completed, then strip the reinforcing steel bar from the pile body by a chisel, and then disassemble and transport the center part of the super-filling head. The method is time-consuming and labor-consuming, and the pile top is uneven after pile cutting, so that the appearance and quality are poor.
In addition, a hydraulic pile cutting machine is available in the market at present, and can perform mechanical pile cutting on a pile head. The pile cutting machine is characterized in that the pile cutting machine is formed by a group of oil cylinders and drill rods which are circumferentially arranged, the oil cylinders and the drill rods are hoisted to a position needing pile cutting through equipment, and the drill rods in the circumferential direction are used for forcibly destroying concrete by utilizing hydraulic pressure. According to the scheme, a hoisting machine needs to be occupied, the foundation bearing layer is disturbed in the operation process, or the excavator carries out secondary earth excavation. The pile head after pile cutting has poor forming quality. The traditional pile cutting method is mainly carried out after the strength of a pile body rises, the processed pile top is uneven, and the external force action can cause the damage to the lower pile body in a splitting or recessive structure.
Therefore, it is very important to design a safe, simple and high-quality pile cutting device which is suitable for non-reinforced or reinforced engineering piles.
The statements in the background section are merely prior art as they are known to the inventors and do not, of course, represent prior art in the field.
Disclosure of Invention
In view of this, the present invention aims to provide an improved technical solution for pile cutting of engineering piles.
In one aspect, there is provided a pile cutting apparatus comprising:
the drill rod is hollow;
the injection device is arranged at one end of the drill rod and is provided with a jet orifice; and
and the pressurizing and power system is connected with the drill rod.
In one embodiment, the injection device is blade-shaped.
In one embodiment, a supercharging and power system comprises: the supercharging device is connected with the power device.
In one embodiment, further comprising: and the storage device is connected with the pressurization and power system.
In one embodiment, further comprising: the stirring device for stirring the slurry is connected with the storage device.
In one embodiment, the drill pipe is made of carbon steel, high speed steel, and/or stainless steel material.
In another aspect, a pile cutting method is also provided, which uses the pile cutting device, and includes the following steps:
s101: pouring the pile foundation to form a pile body after the pile foundation is poured;
s102: before the initial setting of the pile body, the drill rod is rotationally arranged in the pile body, and the injection device is positioned at the elevation position of the pile body;
s103: rotating the drill rod and simultaneously spraying the slurry by the spraying device to form a cutting area at the elevation position;
s104: the drill rod is pulled out of the pile body in a rotating mode;
s105: and after the pile body is solidified, cutting off the pile body from the position of the cutting area.
In one embodiment, after step S103, the method further includes: and lifting the drill rod and spraying grout in a rotary mode to increase the vertical range of the cutting area.
In one embodiment, the direction in which the jetting device jets the slurry is horizontal.
In one embodiment, the slurry is water or a mixture of water with silt and bentonite.
According to the embodiment of the invention, the pile cutting method is adopted before the initial setting of the pile body, the drill rod and the injection device are utilized to form the cutting area at the elevation position of the pile body, and the pile body is cut off from the position of the cutting area after being solidified, so that the safe, simple and high-quality pile cutting effect is achieved.
In terms of quality, the method is completed before the initial setting of the pile body, so that the later strength is not influenced to continue to rise, and the uneven pile top or the damage to the lower structure of the pile body is effectively avoided; in terms of construction period, the over-irrigation part can be transported away together with the earth excavation in the subsequent period without a pile cutting process, so that the construction period is greatly saved, and meanwhile, a large excavator can be used for operation, so that the efficiency is greatly improved; in the aspect of benefit, because the construction period is shortened, the labor and equipment cost is reduced, and the cost for post pile breaking reinforcement is saved for the pile body without reinforcing bars; in the aspect of safety and environmental protection, the invention avoids the generation of dust and the emission of noise during pile cutting.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
figure 1 shows a schematic view of a pile cutting apparatus according to an embodiment of the invention;
FIG. 2 shows a schematic view of a spray device according to an embodiment of the invention;
FIG. 3 shows a schematic view of a pile cutting method according to an embodiment of the invention; and
fig. 4 shows a schematic view of a reinforced and a non-reinforced engineered pile according to an embodiment of the invention.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection, either mechanically, electrically, or in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The invention provides a pile cutting device. Fig. 1 shows a schematic view of a pile cutting device 100 according to an embodiment of the invention. As shown in fig. 1, the pile cutting device 100 includes: a drill rod 1, a spraying device 2 and a pressurization and power system 3. The drill rod 1 is a hollow structure, and slurry, such as cement slurry, can flow in the drill rod 1; the injection device 2 is arranged at one end of the drill rod 1, a jet orifice is arranged on the injection device 2, the injection device 2 is communicated with the drill rod 1, and slurry can flow out of the drill rod 1 through the jet orifice; the pressurizing and power system 3 is connected with the drill rod 1, can provide power for the drill rod 1 to rotate, and provides pressure to drive slurry to enter the drill rod 1 and be sprayed out from a spraying opening of the spraying device 2. The number of the injection ports may be 2, 3 or 4, and the present invention does not impose any limitation on the number of the injection ports.
After the pile body is poured and before the pouring slurry is initially set, the pressurizing and power device 3 drives the drill rod 1 to be inserted into the pile body in a rotating mode, and the injection device 2 is arranged at the elevation position of the pile body. The pressurizing and power unit 3 drives the slurry (which may be the same slurry as the casting slurry or a different slurry such as water or a mixture of water and silt or bentonite) into the drill rod 1 and ejects the slurry from the ejection ports of the ejector 2, which ejects the slurry in a horizontal direction, and simultaneously drives the drill rod 1 to rotate. The high-pressure sprayed slurry and the rotation of the drill rod 1 are combined to perform rotary cutting on the pile body before initial setting so as to form a cutting area. After the pile body is solidified, the pile body can be directly cut off from the cutting area. In addition, the pile body can be a CFG pile, a stirring pile or a reinforced concrete cast-in-place pile.
FIG. 2 shows a schematic view of a spray device according to one embodiment of the present invention. Fig. 2 a is a plan view of the spray device 2, and fig. 2 b is a front view of the spray device 2. As shown in fig. 2, in some embodiments, the jetting device 2 is blade-shaped, and the jetting port is provided at an end of the jetting device 2 remote from the drill rod 1. The slurry flows from the drill pipe 1 into the jetting device 2 and is jetted through the jetting ports of the jetting device 2. Alternatively, the shape of the injection device 2 is an elongated shape, and the present invention does not set any limit to the shape of the injection device 2.
In some embodiments, as shown in fig. 1, the boost and power system 3 includes: a supercharging device 32 and a power device 31, wherein the supercharging device 32 is connected with the power device 31. The pressurizing device can drive the slurry to flow through the drill rod 1 and be ejected out at a high pressure from an ejection port of the ejection device 2; the power device 31 can drive the drill rod 1 to rotate and can also drive the drill rod 1 to insert or extract a pile body.
In some embodiments, the pile cutting device 100 further comprises a storage device 6 for storing the grout, the storage device 6 is connected with the pressurization and power system 3, and the pressurization and power system 3 can draw the grout from the storage device 6 and deliver the grout into the drill pipe 1.
In some embodiments, the pile cutting device 100 further comprises a stirring device 5 for stirring the slurry, the stirring device 5 is connected to the storage device 6, and the stirring device 5 can be used for preparing and stirring the required slurry and conveying the slurry to the storage device 6 for storage and use.
In some embodiments, the drill rod 1 is made of carbon steel, high speed steel, and/or stainless steel material.
The invention provides the pile cutting device, the cutting area is formed at the elevation position of the pile body by utilizing the drill rod and the injection device before the initial setting of the pile body, and the pile body is cut off from the position of the cutting area after being solidified, so that the effect of safe, simple and high-quality pile cutting is achieved.
The invention also provides a pile cutting method. FIG. 3 shows a schematic diagram of a pile cutting method 200 according to an embodiment of the invention. As shown in fig. 2, the pile cutting method 200 includes the following steps:
s201: pouring the pile foundation to form a pile body after the pile foundation is poured;
s202: before the initial setting of the pile body, the drill rod 1 is rotationally arranged in the pile body, and the injection device 2 is positioned at the elevation position of the pile body;
s203: rotating the drill rod 1 and simultaneously spraying the slurry by the spraying device 2 to form a cutting area at an elevation position;
s204: the drill rod 1 is pulled out of the pile body in a rotating way;
s205: and after the pile body is solidified, cutting off the pile body from the position of the cutting area.
After the pile body is poured and before the pouring slurry is initially set, the pressurizing and power device 3 drives the drill rod 1 to be inserted into the pile body in a rotating mode, and the injection device 2 is arranged at the elevation position of the pile body. The pressurizing and power unit 3 then drives the slurry (which may be the same slurry as the casting slurry or a different slurry such as water or a mixture of water and silt or bentonite) into the drill rod 1 and ejects the slurry from the ejection ports of the ejector 2, which ejects the slurry in a horizontal direction, and simultaneously drives the drill rod 1 to rotate. The high-pressure sprayed slurry and the rotation of the drill rod 1 are combined to perform rotary cutting on the pile body before initial setting so as to form a cutting area. After the pile body is solidified, the pile body can be directly cut off from the cutting area. In addition, the pile body can be a CFG pile, a stirring pile or a reinforced concrete cast-in-place pile.
In some embodiments, after step S203, the pile cutting method 200 further comprises: the drill rod 1 is lifted and the grout is spun, increasing the vertical extent of the cutting zone.
Fig. 4 shows a schematic diagram of an engineering pile with reinforcing bars and without reinforcing bars according to an embodiment of the invention, wherein a in fig. 4 is a schematic diagram of an engineering pile without reinforcing bars, and b is a schematic diagram of an engineering pile with reinforcing bars, as shown in b in fig. 4, slurry sprayed by a spraying device 2 fully covers the reinforcing bars in combination with the vertical movement of a drill rod 1 in the process of carrying out rotary spraying on a pile body with reinforcing bars, so that a cutting area L2 is formed, the cutting area L2 formed by the sprayed slurry enables the elevation part of the pile body to be fully separated from a super-filling part L1, and the later pile cutting and the stripping of the reinforcing bars are facilitated, as shown in a in fig. 4, for the pile body without reinforcing bars, only a cutting area with a smaller vertical range can be formed by spraying at the elevation position of the pile body, so that the elevation part of the pile body is separated from the super-filling part L1, or the vertical movement of the drill rod 1 can be combined in the process of rotary spraying, so that a.
According to the embodiment of the invention, the pile cutting method is adopted before the initial setting of the pile body, the drill rod and the injection device are utilized to form the cutting area or the cutting area at the elevation position of the pile body, and the pile body is cut off from the cutting area or the cutting area after being solidified, so that the safe, simple and high-quality pile cutting effect is achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A pile cutting apparatus, comprising:
a drill stem, the drill stem being hollow;
the injection device is arranged at one end of the drill rod and is provided with an injection port; and
and the pressurization and power system is connected with the drill rod.
2. The pile cutting device according to claim 1, wherein the injection device is blade-shaped.
3. The pile cutting apparatus of claim 1, wherein the pressurization and power system comprises: the supercharging device is connected with the power device.
4. The pile cutting device according to claim 1, further comprising: and the storage device is connected with the pressurization and power system.
5. The pile cutting device according to claim 4, further comprising: and the stirring device is connected with the storage device.
6. A pile cutting device according to claim 1, wherein the drill rod is made of carbon steel, high speed steel and/or stainless steel material.
7. Pile cutting method using a pile cutting device according to any one of claims 1-6, characterized by the following steps:
s101: pouring the pile foundation to form a pile body after the pile foundation is poured;
s102: before the pile body is initially set, the drill rod is rotationally arranged in the pile body, and the jet device is located at the elevation position of the pile body;
s103: rotating the drill rod and simultaneously spraying the slurry by the spraying device to enable the slurry to form a cutting area at the elevation position;
s104: rotating the drill rod out of the pile body;
s105: and after the pile body is solidified, cutting off the pile body from the position of the cutting area.
8. The method according to claim 7, wherein after the step S103, further comprising: and lifting the drill rod and spraying grout in a rotary mode to increase the vertical range of the cutting area.
9. The method of claim 7 or 8, wherein the direction in which the spraying device sprays the slurry is a horizontal direction.
10. The method according to claim 7 or 8, wherein the slurry is water or a mixture of water with silt and bentonite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010449322.XA CN111501752A (en) | 2020-05-25 | 2020-05-25 | Pile cutting device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010449322.XA CN111501752A (en) | 2020-05-25 | 2020-05-25 | Pile cutting device and method |
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| Publication Number | Publication Date |
|---|---|
| CN111501752A true CN111501752A (en) | 2020-08-07 |
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| CN202010449322.XA Pending CN111501752A (en) | 2020-05-25 | 2020-05-25 | Pile cutting device and method |
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| CN (1) | CN111501752A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113718773A (en) * | 2021-08-24 | 2021-11-30 | 南京吉欧地下空间科技有限公司 | High-pressure water jet assisted pile pulling equipment and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110644489A (en) * | 2019-09-27 | 2020-01-03 | 中冶成都勘察研究总院有限公司 | Construction method for pile head anchoring section of intercepted pile body |
| CN110965553A (en) * | 2019-12-21 | 2020-04-07 | 一山(北京)岩土工程有限公司 | High-efficient broken pile head device |
| CN212405143U (en) * | 2020-05-25 | 2021-01-26 | 孙斌 | Pile cutting device |
-
2020
- 2020-05-25 CN CN202010449322.XA patent/CN111501752A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110644489A (en) * | 2019-09-27 | 2020-01-03 | 中冶成都勘察研究总院有限公司 | Construction method for pile head anchoring section of intercepted pile body |
| CN110965553A (en) * | 2019-12-21 | 2020-04-07 | 一山(北京)岩土工程有限公司 | High-efficient broken pile head device |
| CN212405143U (en) * | 2020-05-25 | 2021-01-26 | 孙斌 | Pile cutting device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113718773A (en) * | 2021-08-24 | 2021-11-30 | 南京吉欧地下空间科技有限公司 | High-pressure water jet assisted pile pulling equipment and construction method |
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