CN1106880A - Method and apparatus for making compacted pile - Google Patents
Method and apparatus for making compacted pile Download PDFInfo
- Publication number
- CN1106880A CN1106880A CN 93101316 CN93101316A CN1106880A CN 1106880 A CN1106880 A CN 1106880A CN 93101316 CN93101316 CN 93101316 CN 93101316 A CN93101316 A CN 93101316A CN 1106880 A CN1106880 A CN 1106880A
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- China
- Prior art keywords
- pile
- drilling rod
- hole
- drill bit
- soil
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Piles And Underground Anchors (AREA)
Abstract
After the auger is so refitted that its bit is changed into spiral form, it is used for boring hole during forward rotation and for backfilling during reverse rotation. During reverse rotation, pile material is filled into hole and the raised auger rod densifies pile material to form pile. The present invention can solve the problem of neck shrinkage of saturated soft clay and the problem of hole caving.
Description
The present invention relates in the Foundation Design method of pile on the spot, especially build the method and the equipment thereof of stake without cast tube or other template.
At present, on-the-spot with in the lime soil pile soft ground treatment, its worker's method mainly contains immersed tunnelling method, double-tube method, luoyang spade pore-forming and rams methods such as filling into stake.Ram the method for filling out with immersed tunnelling method and luoyang spade pore-forming and be difficult to solve the necking down problem of saturated soft clay and the hole problem of collapsing of miscellaneous fill; Big with luoyang spade pore-forming labour intensity, efficient is low, and groundwater table is difficult for pore-forming when high; Though double-tube method can be eliminated necking down, the hole problem of collapsing, the operating procedure complexity, equipment does not match, and efficient is low fails to apply.In addition, above several method all exists the big shortcoming of noise.
The objective of the invention is for solving above-mentioned necking down and the method and apparatus of the making compacted pile a kind of easy and simple to handle that the hole problem of collapsing proposes.
The equipment that the present invention mainly adopts is auger machine, its process is: make it just change into the hole after in place in rig, part regolith spiral proposes ground in the pore forming process, the part regolith is compacted between stake, pore-forming backsight soil property situation, if viscose glue mud, clinging drill bit influences blanking, just must propose drill bit rapidly foundry loam is dug up, and falls at the bottom of the hole again, after getting into greater than projected depth, brill allows brill soil continue to rotate with the discharge of the soil on the drilling rod under stopping, and reverses then, and a small amount of surplus soil pressure on loosened soil at the bottom of the hole and the drilling rod is close, allow drill bit rise to projected depth again, continue counter-rotating and insert the two ashes (quicklime that is prepared, flyash) or grey soil material.Feeding speed requires evenly, makes drilling rod with the filler compacted filler pile that slowly rises automatically.
In order to make compacted filler of when counter-rotating, the bit blades of spiral drilling machine is a helical form, and its helical angle is 20~30 °, and the end thrust of a thrust bearing when bearing counter-rotating adorned in the unit head lower end.
After adopting above-mentioned measure, when the pore-forming pile, because helical blade is always in the hole, the emptying aperture of filler does not partly have the helical blade supporting, stoped and moulded shape soil and in the hole, walk about, solved necking down preferably and the hole problem of collapsing, carry grey pile material downwards with helical blade during counter-rotating,, save other compacting pile-forming equipment with the compacted compacting pile body of the weight of unit head and drilling rod itself, because the counter-rotating pile-forming speed is fast, formation of pile is blown out the pile difficulty of bringing when having reduced high water level, this worker method noiselessness in whole construction course, friction, the efficient height, not blowdown, unaffected for the building that closes on, be specially adapted to the transformation in old city.
Embodiment:
Be positioned at the engineering on the outer moat of city wall in the past, this ground beginning of the eighties is with building waste, household garbage backfill, its density, and mechanical strength is still all inhomogeneous on the vertical direction aspect horizontal, and designing requirement office cloth is handled.But because of water level apart from handling only 1.2~2 meters on ground, contain queen closer in the miscellaneous fill and how to be difficult to pore-forming with other method, finished this project smoothly with this law, two grey fullness coefficients reach about 1.5,500 of piles are handled dark 2~4.5 meters.
Claims (3)
1, a kind of soft ground treatment method of pile on the spot that is used for, it is characterized in that, auger machine is just being changed into the hole after in place, part regolith spiral proposes ground in the pore forming process, the part regolith is compacted between stake, after getting into greater than 0.5 meter of projected depth, stop to bore down and allow drill bit continuation rotation that the soil on the drilling rod is discharged, counter-rotating then, a small amount of surplus soil pressure on loosened soil at the bottom of the hole and the drilling rod is close, allow drill bit rise to projected depth again, begin to insert the material that is prepared, feeding speed requires evenly, makes drilling rod with the filler compacted filler pile that slowly rises automatically.
2, a kind of auger machine that is used for the described method of claim 1 comprises frame, unit head, drilling rod, drill bit, chassis, it is characterized in that, bit blades is a helical form, and its spiral angle is 20~30 °.
3, auger machine according to claim 2 is characterized in that, adorns a thrust bearing in the unit head lower end.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN93101316A CN1035342C (en) | 1993-02-05 | 1993-02-05 | Method and apparatus for making compacted pile |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN93101316A CN1035342C (en) | 1993-02-05 | 1993-02-05 | Method and apparatus for making compacted pile |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1106880A true CN1106880A (en) | 1995-08-16 |
CN1035342C CN1035342C (en) | 1997-07-02 |
Family
ID=4983518
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN93101316A Expired - Fee Related CN1035342C (en) | 1993-02-05 | 1993-02-05 | Method and apparatus for making compacted pile |
Country Status (1)
Country | Link |
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CN (1) | CN1035342C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113323584A (en) * | 2021-06-18 | 2021-08-31 | 四川振杰岩土工程有限责任公司 | Drilling method of large vibrating long spiral drilling machine |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62242011A (en) * | 1986-04-12 | 1987-10-22 | Hideo Takahashi | Method and apparatus for constructing shallow ground-improving pile |
AU7473587A (en) * | 1986-06-27 | 1988-01-07 | Research House Pty. Ltd. | Earth compaction means and method |
CN2055863U (en) * | 1989-02-21 | 1990-04-11 | 宜兴市范道水利工程设备厂 | Multifunctional engineering drilling machine |
CN1029864C (en) * | 1992-04-17 | 1995-09-27 | 山东省寿光县第二建筑工程公司 | Foundation treatment method |
-
1993
- 1993-02-05 CN CN93101316A patent/CN1035342C/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113323584A (en) * | 2021-06-18 | 2021-08-31 | 四川振杰岩土工程有限责任公司 | Drilling method of large vibrating long spiral drilling machine |
CN113323584B (en) * | 2021-06-18 | 2023-11-07 | 四川振杰岩土工程有限责任公司 | Drilling method of large-scale vibration long spiral drilling machine |
Also Published As
Publication number | Publication date |
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CN1035342C (en) | 1997-07-02 |
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C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |