CN112681359A - Method for pile pulling construction in collapsible loess area - Google Patents
Method for pile pulling construction in collapsible loess area Download PDFInfo
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- CN112681359A CN112681359A CN202011486901.8A CN202011486901A CN112681359A CN 112681359 A CN112681359 A CN 112681359A CN 202011486901 A CN202011486901 A CN 202011486901A CN 112681359 A CN112681359 A CN 112681359A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000010276 construction Methods 0.000 title claims abstract description 13
- 239000002689 soil Substances 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000002791 soaking Methods 0.000 claims abstract description 24
- 238000005070 sampling Methods 0.000 claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 20
- 238000004080 punching Methods 0.000 claims abstract description 12
- 238000007654 immersion Methods 0.000 claims abstract description 4
- 230000008569 process Effects 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 7
- 238000004064 recycling Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005527 soil sampling Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000011068 loading method Methods 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims 7
- 238000011049 filling Methods 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a method for pile pulling construction in a collapsible loess area, which comprises the following steps: s1, sampling: utilizing a soil sampler to define a designated area, and cutting and sampling soil on the collapsible yellow land to be treated; s2, testing the soil sample: placing the cut soil sample in a designated container, adding water for soaking, and knowing the soaking water amount and the settlement condition of the soil; s3, field sampling test: sampling, adding water and soaking in the pretreated area, knowing the soaking amount of the central area and the settlement condition of the soil, and judging the error rate of the test; s4, punching and adding water: then, punching holes around an area needing pile pulling, arranging the punching holes according to actual needs, and adding water for soaking; s5, selecting: and (4) according to the water immersion amount of the soil test and the field sampling test and the settlement condition of the soil. The method for pile pulling construction in the collapsible loess area not only can ensure the accuracy of pile pulling selection, but also can reduce the burden of pile pulling.
Description
Technical Field
The invention belongs to the technical field of pile pulling construction, and particularly relates to a method for pile pulling construction in a collapsible loess area.
Background
The collapsible loess refers to soil which undergoes significant additional deformation due to structural damage of soil after being soaked under the action of self-weight stress of an overlying soil layer or under the combined action of the self-weight stress and additional stress, and belongs to special soil. Some miscellaneous fill also has a collapsible nature. Loess widely distributed in northeast, northwest, China and east China has a plurality of collapsibility. (the loess as used herein refers to loess and loess-like soil, collapsible loess is classified into self-weight collapsible loess and non-self-weight collapsible loess, and some old loess does not have collapsibility).
In collapsible loess areas, pile pulling is difficult because special processing equipment is used for pretreatment during pile driving.
Therefore, in view of the current situation, it is urgently needed to design and produce a method for pile pulling construction in collapsible loess areas so as to meet the requirements of practical use.
Disclosure of Invention
The invention aims to provide a method for pile pulling construction in a collapsible loess area, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a method for pile pulling construction in collapsible loess areas comprises the following steps:
s1, sampling: utilizing a soil sampler to define a designated area, and cutting and sampling soil on the collapsible yellow land to be treated;
s2, testing the soil sample: placing the cut soil sample in a designated container, adding water for soaking, and knowing the soaking water amount and the settlement condition of the soil;
s3, field sampling test: sampling, adding water and soaking in the pretreated area, knowing the soaking amount of the central area and the settlement condition of the soil, and judging the error rate of the test;
s4, punching and adding water: then, punching holes around an area needing pile pulling, arranging the punching holes according to actual needs, and adding water for soaking;
s5, selecting: selecting a proper pile extractor according to the water immersion amount of the soil test and the field sampling test and the settlement condition of the soil;
s6, pile pulling: clearing the above-ground obstacles, marking underground structures and pipelines within the range of a treatment site, keeping the site smooth, and pulling out ground piles;
s7, after material feeding: and after the ground pile is pulled out, transporting the ground pile out of the field by using equipment.
Preferably, the soil sampler adopts large soil sampling equipment to ensure the accuracy of the subsequent soaking dosage.
Preferably, in the pile pulling process, a plurality of groups of high-pressure water spraying devices are installed on the periphery of the pile pulling machine, and the pulled ground pile is sprayed with water by the aid of the plurality of groups of high-pressure water spraying devices to remove the adhered soil on the periphery of the ground pile.
Preferably, the lower half part of the ground pile is further provided with a filtering and recycling device for recycling the sprayed water.
Preferably, in the pile pulling process, the ground pile is excited by the aid of the vibrator to vibrate soil on the periphery of the ground pile.
Preferably, the vibrator adopts an eccentric moment adjustable hydraulic vibration pile hammer.
Preferably, the pile extractor adopts a pressure holding type pile clamping device.
Preferably, the earth pits present after the post-loading process are filled and leveled.
The invention has the technical effects and advantages that: according to the method for pile pulling construction in the collapsible loess area, after sampling, soaking and understanding treatment are carried out on soil, the pile pulling burden is reduced, the model and the power of a pile pulling machine to be used can be known, and the accuracy of selection is guaranteed; the high-pressure water spraying and soil vibrating can greatly remove the soil on the periphery of the ground pile, and reduce the workload of the pile extractor; the method for pile pulling construction in the collapsible loess area not only can ensure the accuracy of pile pulling selection, but also can reduce the burden of pile pulling.
Detailed Description
The technical solutions in the present disclosure will be clearly and completely described below with reference to the present disclosure, and it is obvious that the described contents are only a part of the present disclosure, and not all of the present disclosure. All other matters which can be obtained by a person skilled in the art without making creative efforts based on the contents of the present invention belong to the protection scope of the present invention.
The invention provides a method for pile pulling construction in a collapsible loess area, which comprises the following steps:
s1, sampling: utilizing a soil sampler to define a designated area, and cutting and sampling soil on the collapsible yellow land to be treated;
s2, testing the soil sample: placing the cut soil sample in a designated container, adding water for soaking, and knowing the soaking water amount and the settlement condition of the soil;
s3, field sampling test: sampling, adding water and soaking in the pretreated area, knowing the soaking amount of the central area and the settlement condition of the soil, and judging the error rate of the test;
s4, punching and adding water: then, punching holes around an area needing pile pulling, arranging the punching holes according to actual needs, and adding water for soaking;
s5, selecting: selecting a proper pile extractor according to the water immersion amount of the soil test and the field sampling test and the settlement condition of the soil;
s6, pile pulling: clearing the above-ground obstacles, marking underground structures and pipelines within the range of a treatment site, keeping the site smooth, and pulling out ground piles;
s7, after material feeding: and after the ground pile is pulled out, transporting the ground pile out of the field by using equipment.
Specifically, the soil sampler adopts large soil sampling equipment to ensure the accuracy of the subsequent soaking dosage.
Specifically, in the pile pulling process, a plurality of groups of high-pressure water spraying devices are installed on the periphery of the pile pulling machine, and the pulled ground piles are sprayed with water by the aid of the plurality of groups of high-pressure water spraying devices to remove the adhered soil on the periphery of the ground piles.
Specifically, the lower half part of the ground pile is also provided with a filtering and recycling device for recycling the sprayed water liquid.
Specifically, in the pile pulling process, the ground pile is excited by the aid of the vibrator to vibrate soil on the periphery of the ground pile.
Specifically, the vibrator adopts an eccentric moment adjustable hydraulic vibration pile hammer.
Specifically, the pile extractor adopts an embracing type pile clamping device.
Specifically, the existing soil pit is filled and leveled after the process of material preparation.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing description, it will be apparent to one skilled in the art that various changes, modifications, equivalents, and improvements may be made without departing from the spirit and scope of the invention.
Claims (8)
1. A method for pile pulling construction in a collapsible loess area is characterized by comprising the following steps:
s1, sampling: utilizing a soil sampler to define a designated area, and cutting and sampling soil on the collapsible yellow land to be treated;
s2, testing the soil sample: placing the cut soil sample in a designated container, adding water for soaking, and knowing the soaking water amount and the settlement condition of the soil;
s3, field sampling test: sampling, adding water and soaking in the pretreated area, knowing the soaking amount of the central area and the settlement condition of the soil, and judging the error rate of the test;
s4, punching and adding water: then, punching holes around an area needing pile pulling, arranging the punching holes according to actual needs, and adding water for soaking;
s5, selecting: selecting a proper pile extractor according to the water immersion amount of the soil test and the field sampling test and the settlement condition of the soil;
s6, pile pulling: clearing the above-ground obstacles, marking underground structures and pipelines within the range of a treatment site, keeping the site smooth, and pulling out ground piles;
s7, after material feeding: and after the ground pile is pulled out, transporting the ground pile out of the field by using equipment.
2. The method for pile extraction in collapsible loess areas according to claim 1, wherein: the soil sampler adopts large soil sampling equipment to ensure the accuracy of the subsequent soaking dosage.
3. The method for pile extraction in collapsible loess areas according to claim 1, wherein: in the pile pulling process, a plurality of groups of high-pressure water spraying devices are installed on the periphery of the pile pulling machine, and the pulled ground piles are sprayed with water by the aid of the plurality of groups of high-pressure water spraying devices to remove the adhered soil on the periphery of the ground piles.
4. The method for pile extraction in collapsible loess areas according to claim 3, wherein: the lower half part of the ground pile is also provided with a filtering and recycling device for recycling the sprayed water liquid.
5. The method for pile extraction in collapsible loess areas according to claim 1, wherein: in the pile pulling process, the vibrator is used for exciting the ground pile so as to vibrate the soil on the periphery of the ground pile.
6. The method for pile extraction in collapsible loess areas according to claim 5, wherein: the vibrator adopts an eccentric moment adjustable hydraulic vibration pile hammer.
7. The method for pile extraction in collapsible loess areas according to claim 1, wherein: the pile extractor adopts a holding and pressing type pile clamping device.
8. The method for pile extraction in collapsible loess areas according to claim 1, wherein: and filling and leveling the soil pit after the material-loading process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011486901.8A CN112681359A (en) | 2020-12-16 | 2020-12-16 | Method for pile pulling construction in collapsible loess area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011486901.8A CN112681359A (en) | 2020-12-16 | 2020-12-16 | Method for pile pulling construction in collapsible loess area |
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| Publication Number | Publication Date |
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| CN112681359A true CN112681359A (en) | 2021-04-20 |
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| CN202011486901.8A Pending CN112681359A (en) | 2020-12-16 | 2020-12-16 | Method for pile pulling construction in collapsible loess area |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030102165A1 (en) * | 2001-12-03 | 2003-06-05 | Frantz Anthony F. | System and apparatus for excavating contaminated pilings |
| CN103233454A (en) * | 2013-04-07 | 2013-08-07 | 西安理工大学 | Processing method of soaking, vacuum preloading and slurry injecting for sand piles of collapsible loess foundation |
| CN103485344A (en) * | 2013-09-17 | 2014-01-01 | 常熟理工学院 | Method for extracting construction engineering pile foundation |
| CN104005406A (en) * | 2014-01-29 | 2014-08-27 | 陈东曙 | Tubular pile construction method and pile tube structure of tubular pile |
| CN104652436A (en) * | 2014-12-24 | 2015-05-27 | 福建工程学院 | Steel sleeve soil taking and high-pressure water injection soil loosening pile pulling construction method |
| CN204456112U (en) * | 2015-02-04 | 2015-07-08 | 绥棱县宏运养鱼场 | One scraps well well casing plucking device |
| KR101789492B1 (en) * | 2017-01-23 | 2017-10-27 | (주)대한하이텍건설 | A System for Reinforcing Soft Ground and Restoring Depressed structures including Urethane and Construction Methods Using Thereof |
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| CN111472356A (en) * | 2020-04-14 | 2020-07-31 | 周力 | Larsen steel sheet pile sleeve obstacle clearing and pile pulling construction method |
-
2020
- 2020-12-16 CN CN202011486901.8A patent/CN112681359A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030102165A1 (en) * | 2001-12-03 | 2003-06-05 | Frantz Anthony F. | System and apparatus for excavating contaminated pilings |
| CN103233454A (en) * | 2013-04-07 | 2013-08-07 | 西安理工大学 | Processing method of soaking, vacuum preloading and slurry injecting for sand piles of collapsible loess foundation |
| CN103485344A (en) * | 2013-09-17 | 2014-01-01 | 常熟理工学院 | Method for extracting construction engineering pile foundation |
| CN104005406A (en) * | 2014-01-29 | 2014-08-27 | 陈东曙 | Tubular pile construction method and pile tube structure of tubular pile |
| CN104652436A (en) * | 2014-12-24 | 2015-05-27 | 福建工程学院 | Steel sleeve soil taking and high-pressure water injection soil loosening pile pulling construction method |
| CN204456112U (en) * | 2015-02-04 | 2015-07-08 | 绥棱县宏运养鱼场 | One scraps well well casing plucking device |
| KR101789492B1 (en) * | 2017-01-23 | 2017-10-27 | (주)대한하이텍건설 | A System for Reinforcing Soft Ground and Restoring Depressed structures including Urethane and Construction Methods Using Thereof |
| CN110468843A (en) * | 2019-07-15 | 2019-11-19 | 中国一冶集团有限公司 | A kind of dynamic pile pulling power calculation method of tubular pole |
| CN111472356A (en) * | 2020-04-14 | 2020-07-31 | 周力 | Larsen steel sheet pile sleeve obstacle clearing and pile pulling construction method |
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| Title |
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