CN1254587C - Half screw pile and its pile forming method thereof - Google Patents
Half screw pile and its pile forming method thereof Download PDFInfo
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- CN1254587C CN1254587C CN 03128265 CN03128265A CN1254587C CN 1254587 C CN1254587 C CN 1254587C CN 03128265 CN03128265 CN 03128265 CN 03128265 A CN03128265 A CN 03128265A CN 1254587 C CN1254587 C CN 1254587C
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- pile
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- stake
- drilling rod
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000002689 soil Substances 0.000 claims description 33
- 238000005553 drilling Methods 0.000 claims description 22
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 8
- 238000005266 casting Methods 0.000 abstract 1
- 238000009417 prefabrication Methods 0.000 abstract 1
- 238000005056 compaction Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000003203 everyday effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The present invention relates to a half screw pile and a pile forming method thereof. The half screw pile is composed of an upper part and a lower part, wherein the upper part is a linear structure, and the lower part is a screw type structure. The half screw pile can be divided into two types, namely a filed casting type and a prefabrication type, and the pile forming method of both types is simple. During pile forming construction, the present invention has the advantages of no noise pollution, no vibration hazard and convenient construction; the present invention has a wide prospect. Besides, the present invention has the advantages that the present invention not only meets the characteristic of stress concentration of the upper part of the pile but also increases bearing capacity; compared with other concrete piles, the dosage of concrete is low, and thus, the cost can be saved by more than 30%.
Description
Technical field
The present invention relates to building field, be specifically related to semi-screw pile and become pile work method.
Background technology
No matter be prefabricated both at home and abroad or the Cast-in-place concrete end holds friction pile, a stake end group originally is placed on to have better holds the power soil layer, and under the ultimate bearing capacity state, the primary load of stake is still born by pile side friction.Although the concrete compressive strength deposit is very big, be difficult to performance, often with the bearing capacity limit index of soil body friction destruction as stake.On behalf of domestic outer end, this type stake hold almost whole stress characteristics of friction pile.The birth of the prefabricated full thread stake of Japan's steel fibre changed this stress characteristic, but it is owing to high cost can not get extensive use and popularization.By stake environment is categorized as soil compaction stake (containing the stake of part soil compaction), non-soil compaction stake, the soil compaction stake is in work progress, pile peripheral earth is subjected to the squeezing action of pile body, excess pore water pressure increases in the soil body, the protuberance phenomenon takes place in the soil body, cause the infringement of surrounding enviroment to receive publicity day by day, in big and medium-sized cities, the strict controlled use of this method.Non-soil compaction stake refers to do, the stake of wet trade worker method, and it fetches earth very serious with mud contamination, at present, does not almost have better technical measures to solve.
Summary of the invention
Purpose of the present invention provides a kind of semi-screw pile and becomes pile work method in order to overcome the problem and shortage of above-mentioned existence, and this is to be based upon the CFG stake promptly to do the novel stake of inventing on the basis of the working system stake and the steel fibre full thread stake of Japan.This pile capacity obviously improves, and construction costs obviously reduces.
A kind of semi-screw pile is made up of two parts, and top is linear structure, and the bottom is the screw-type structure, linear pattern partly account for total stake long 1/3, screw-type partly account for total stake long 2/3.
Semi-screw pile of the present invention is divided into precasting and cast-in-place type.The precasting semi-screw pile can be prefabricated into hollow and solid two types, can adopt the above concrete of C25 prefabricated, disjunction welding or bonding, utilize dither to make the local liquefaction of the soil body, make stake pile sinking progressively in liquefaction of soil mass, form semi-screw pile, this method easy construction, vibration effect radius≤5 meter, the pollution of construction noiselessness, friction public hazards, easy construction, prospect is very extensive.This method is cheap more than Japanese steel fibre helical burr ram.Japan's steel fibre pre-threaded stake is adopted to exert pressure by force and rotated the pile worker method of burying, and is therefore high to the concrete strength requirement, no large-scale promotion prospect.
Cast-in-place type pile-formation process also is simple, can adopt the construction of typing half tommy bar bar drill machine disposal molding.The pile amount can reach 750 linear meter(lin.m.)s (ф 500mm stake footpath) every day.The basic step of cast-in-place its disposal molding of type semi-screw pile is poly-as described below:
1, is rotated into the hole under the semi-screw pile drilling rod rig of employing special use and is shaped to projected depth;
2, utilize pump machine extruding concrete to go out concrete, and be rotated counterclockwise and carry drilling rod, keep in the drilling rod pressure differential with the soil body, must not interrupt concrete, be rotated counterclockwise and promote the pumping concrete, form bottom screw-type stake from the drilling rod base pressure;
3, drilling rod rises near behind the absolute altitude at the bottom of the weak soil, is changed into not rotating directly by rotation and carries, and the stake pressure injection finishes until top, forms the linear pattern stake.
Also can in stake, place reinforcing cage.
Wherein: a, in the hole that has half screw, when rotatablely moving up and down, drilling rod to keep the screw pore-forming synchronous, and spiral shell tooth between cog soil must not be disturbed, and the spiral shell tooth will have certain thickness and width, and this technology is applicable to＞120KPa soil layer or other soil layer therebetween.B, in linear hole is arranged, drilling rod is rotated down the drilling and forming hole of exerting pressure, the straight deduction stake of upwards stopping the rotation.This technology is applicable to≤120KPa soil layer or other soil layer therebetween.
This worker's method advantage: 1, by the disposable compact making hole pile of machinery, the outward transport of nothing left soil, noiselessness; 2, speed of application obviously is better than other stake, and a machine is constructed about 750 linear meter(lin.m.)s every day; 3, be squeezed into screw-type+linear pattern by the pump pressure type drilling rod, the moulding stake does not have broken pile, no necking down, and bearing capacity obviously improves.
Semi-screw pile accommodation:
1, extensively applies to weak soil layer and hardpan and replace soil layer, as friction pile+end bearing pile use of structure.
2, stake footpath ф 300mm to ф 800mm.
3, stake long≤60 meter
The semi-screw pile advantage:
1, semi-screw pile is as screw-type, and its stress characteristic is to develop into the soil body by the stressed linear pattern stake of friction to shear the force type stake, and it holds the power of cutting and obviously improves.
2, semi-screw pile top is linear pattern, avoids screw-type in the not obvious and relatively poor phenomenon of rigidity of weak soil bearing capacity.Satisfied the feature that stake top stress is comparatively concentrated.
3, the moulding process of semi-screw pile can be cast-in-place and prefabricated, and prefabricated semi-screw pile can adopt the C30 concrete, and construct with dither.
4, the concrete consumption is lower than other concrete stakes, can economize more than 30%.
5, the general concrete stake of single pile bearing force rate doubles above.
Description of drawings
Fig. 1 is the structure elevation of cast-in-place type semi-screw pile.
Fig. 2 is the structure elevation of precasting semi-screw pile.
Fig. 3 is the 1-1 sectional drawing of precasting semi-screw pile.
The specific embodiment
Embodiment 1
Cast-in-place type semi-screw pile is made up of two parts, and top is linear structure, and the bottom is the screw-type structure, linear structure account for total stake long 1/3, the screw-type structure account for total stake long 2/3, adopt the construction of typing half tommy bar bar drill machine disposal molding.1., adopt and to be rotated into the hole under the special-purpose semi-screw pile drilling rod rig up time and to be shaped to projected depth concrete steps are as follows:;
2., utilize pump machine extruding concrete to go out concrete from the drilling rod base pressure, and be rotated counterclockwise and carry drilling rod, keep in the drilling rod pressure differential with the soil body, must not interrupt concrete, be rotated counterclockwise and promote the pumping concrete, form bottom screw-type stake;
3., drilling rod rises near behind the absolute altitude at the bottom of the weak soil, changed into not rotating directly by rotation and carries, the stake pressure injection finishes until top, forms top linear pattern stake.
Also can in stake, place reinforcing cage.And in the hole that has half screw, will keep the screw pore-forming synchronous when drilling rod rotatablely moves up and down, spiral shell tooth between cog soil must not be disturbed, and the spiral shell tooth will have certain thickness and width.
Embodiment 2
The precasting semi-screw pile is made up of two parts, top is linear structure, the bottom is the screw-type structure, linear structure account for total stake long 1/3, the screw-type structure account for total stake long 2/3, sectional forming welding or bonding is adopted in this stake, utilizes dither to make that the soil body is local to liquefy, make stake pile sinking progressively in liquefaction of soil mass, form semi-screw pile.
Claims (6)
1, a kind of semi-screw pile is made up of two parts, and top is linear structure, the bottom is the screw-type structure, it is characterized in that linear structure partly account for total stake long 1/3rd, the screw-type structure division account for total stake long 2/3rds, its spiral shell tooth has certain thickness and width.
2, semi-screw pile according to claim 1 is characterized in that semi-screw pile can be divided into cast-in-place type and precasting.
3,, it is characterized in that semi-screw pile can make solid pile or hollow pile according to claims 1 or 2 described semi-screw piles.
4, a kind of one-tenth pile work method of cast-in-place type semi-screw pile is characterized in that carrying out according to the following steps:
Adopt the special-purpose semi-screw pile drilling rod rig pore-forming that turns clockwise to be shaped to projected depth;
Utilize pump machine extruding concrete, go out concrete, and be rotated counterclockwise and carry drilling rod, keep in the drilling rod pressure differential with soil body periphery medium, must not interrupt concrete, be rotated counterclockwise the lifting concrete, form bottom screw-type structure division from the drilling rod base pressure;
Drilling rod rises near behind the absolute altitude at the bottom of the weak soil, perhaps near two places of stake Senior Three branchs, is changed into not rotating by rotation and directly carries drilling rod, finishes formation linear structure part until top stake cast.
5, the one-tenth pile work method of cast-in-place type semi-screw pile according to claim 4 is characterized in that will keeping when drilling rod rotatablely moves up and down the screw pore-forming synchronous, and spiral shell tooth between cog soil must not be disturbed.
6, a kind of one-tenth pile work method of precasting semi-screw pile is characterized in that stake adopts sectional forming welding or bonding, utilizes dither to make the local liquefaction of the soil body, makes stake pile sinking progressively in liquefaction of soil mass, forms semi-screw pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03128265 CN1254587C (en) | 2003-07-03 | 2003-07-03 | Half screw pile and its pile forming method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03128265 CN1254587C (en) | 2003-07-03 | 2003-07-03 | Half screw pile and its pile forming method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1482308A CN1482308A (en) | 2004-03-17 |
| CN1254587C true CN1254587C (en) | 2006-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03128265 Expired - Lifetime CN1254587C (en) | 2003-07-03 | 2003-07-03 | Half screw pile and its pile forming method thereof |
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| Country | Link |
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| CN (1) | CN1254587C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864768A (en) * | 2010-06-25 | 2010-10-20 | 彭桂皎 | Pile-forming drilling tool for screw pile and pile-forming construction method thereof |
| CN102162248B (en) * | 2011-04-26 | 2012-08-29 | 武汉高铁桩工科技有限公司 | Method for forming variable-cross-section compaction thread pile and compaction drilling tool |
| CN102312434A (en) * | 2011-04-26 | 2012-01-11 | 王庆伟 | Compound screw pile and method for forming pile |
| CN103266601B (en) * | 2013-06-09 | 2015-05-06 | 中铁科工集团有限公司 | Deep-layer dense multi-branch pile and application thereof |
| CN104975598A (en) * | 2014-04-03 | 2015-10-14 | 上海振中机械制造有限公司 | Screw grout pile |
| CN104563102B (en) * | 2014-10-13 | 2016-08-24 | 叶长青 | A kind of screw pile and manufacture method thereof and the construction method of screw pile |
| CN104264666B (en) * | 2014-10-20 | 2017-02-15 | 刘淼 | Variable diameter all-thread pile and pile forming method thereof |
| CN108179741A (en) * | 2018-03-26 | 2018-06-19 | 卓典机器人（海南）有限公司 | A kind of screw rod pile and combined drilling tool and its engineering method |
-
2003
- 2003-07-03 CN CN 03128265 patent/CN1254587C/en not_active Expired - Lifetime
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| Publication number | Publication date |
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| CN1482308A (en) | 2004-03-17 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Liu Jianping Assignor: Peng Guijiao Contract fulfillment period: 2009.3.14 to 2023.7.3 Contract record no.: 2009210000156 Denomination of invention: Half screw pile and its pile forming method thereof Granted publication date: 20060503 License type: Exclusive license Record date: 20090422 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.3.14 TO 2023.7.3; CHANGE OF CONTRACT Name of requester: LIU JIANPING Effective date: 20090422 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Sichuan Ke Hui Construction Co.,Ltd. Assignor: Peng Guijiao Contract fulfillment period: 2009.11.14 to 2023.6.3 Contract record no.: 2009510000181 Denomination of invention: Half screw pile and its pile forming method thereof Granted publication date: 20060503 License type: Exclusive license Record date: 20091215 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.11.14 TO 2023.6.3; CHANGE OF CONTRACT Name of requester: SICHUAN KEHUI CONSTRUCTION CO., LTD. Effective date: 20091215 |
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Assignee: Sichuan Ke Hui Construction Co.,Ltd. Assignor: Peng Guijiao Contract record no.: 2009510000181 Date of cancellation: 20100720 |
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Effective date of registration: 20180612 Address after: 570208 unit 1, unit 4, 4 Cove garden, 59 Peace Avenue, Meilan District, Haikou, Hainan. Patentee after: HAINAN ZHUODIAN HIGH TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 430060 electromechanical Department of Wuhan University of Technology, Hubei (Yu Jiatou campus) Patentee before: Peng Guijiao |
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Granted publication date: 20060503 |