CN1749484A - Construction method for prefabricated tubular pile with expanding head - Google Patents
Construction method for prefabricated tubular pile with expanding head Download PDFInfo
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- CN1749484A CN1749484A CN 200510094851 CN200510094851A CN1749484A CN 1749484 A CN1749484 A CN 1749484A CN 200510094851 CN200510094851 CN 200510094851 CN 200510094851 A CN200510094851 A CN 200510094851A CN 1749484 A CN1749484 A CN 1749484A
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- prefabricated tubular
- tubular pile
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Abstract
The construction method of prefabricated tubular pile with expanded head is for reinforcing foundation in building base engineering. The expanded head is formed through explosion. The construction method includes the steps of: depositing the prefabricated tubular pile and hollow pile tip to set depth; setting explosive through the central hole of the hollow pile tip; detonating explosive to form the expanded head in the pile tip; throwing stuffing to the expanded head and tamping; and depositing concrete to form the pile end reinforcing area and expanded head. The said method can raise the bearing capacity of the pile, improve the mechanical performance of the soil in the pile end, avoids softening of the soil in the pile end and lower engineering cost.
Description
Technical field
The present invention is a kind of method that building foundation engineering is reinforced ground that is used for, and belongs to the technical field of civil engineering pile foundation construction method.
Background technology
In building foundation engineering, adopt various pileworks in a large number, because prefabricated tubular pile has intensity height, material province, plurality of advantages such as speed of application is fast, cost is relatively low, the easy assurance of quality, therefore be most widely used.Pile tube is divided into various ways such as pile for prestressed pipe, high intensity thinner tube pile tube.Because of mostly prefabricated tubular pile is to sink in the soil by the method for static pressure or hammering, so it is an orthoscopic entirely.In order to increase the bearing capacity of prefabricated tubular pile, the technology of the minority enlarged footing of can constructing in the ground of stake bottom is arranged at present, but these job practicess or needs band water pore-forming, this brings difficulty for concrete perfusion, be to ram expansion in the pipe in that concrete is dropped in, this causes the damage of prefabricated tubular pile easily, and the stake point sinks seldom, be difficult to form enlarged footing, the difficult quality guarantee of engineering.
Summary of the invention
Technical problem: the prefabricated tubular pile that the objective of the invention is to have enlarged footing at the stake end, a kind of job practices that has the prefabricated tubular pile of enlarged footing is provided, use this method can greatly improve the bearing capacity of stake, improve the mechanics index of physics of stake end soil, avoid the softening of stake end soil, easy construction reduces construction costs.
Technical scheme: the present invention is directed to stake and hold the construction technology of the prefabricated tubular pile that has enlarged footing to design.The composition that the stake end has the prefabricated tubular pile of enlarged footing comprises: tubulose precast pile, hollow pile point, enlarged footing.
Its basic construction technology has explosion method and companding method, and wherein the construction technology of explosion method is as follows:
(1) utilize pile sinking machinery that prefabricated tubular pile and hollow pile point are sink to predetermined absolute altitude;
(2) utilize the middle hole of hollow pile point to throw in explosive;
(3) ignition charge;
(4) form enlarged footing at the stake end;
(5) in the explosive expansion head, throw in filler (rubble etc.), and compacting;
(6) pouring concrete forms the stake end and enlarges the reinforcement district;
In construction technology, the method that forms enlarged footing at the stake end can also be the companding method:
1) utilize pile sinking machinery that prefabricated tubular pile and hollow pile point are sink to predetermined absolute altitude,
2) in prefabricated tubular pile, with the downward hammering of depression bar hollow pile point is continued to pressing down, and make the hollow pile point around to extending out out,
4) between hollow pile point and prefabricated tubular pile, throw in filler,
5) press down to make with depression bar again and throw in filler and enlarge downwards and towards periphery, and compacting, form the stake end and enlarge and strengthen the district, form enlarged footing at the stake end.
Beneficial effect: the present invention holds the prefabricated tubular pile that has enlarged footing for stake, and the pile sinking mode adopts static pressure method or hammering method, quick construction.Because the form of explosion is adopted in the reaming of stake end, it is more quick construct, also better to the compacted effect of stake end soil simultaneously, thereby has increased a kind of novel, type efficiently for pile foundation engineering.Compare with common prefabricated tubular pile, the stake end area of the prefabricated tubular pile of band enlarged footing increases, greatly improved the bearing capacity of stake, secondly, again because of having improved the mechanics index of physics of stake end soil, to strong-weathered rock, also avoid the softening of stake end soil, further reduced the sedimentation of stake, reduced the quantity of stake, reduce the size and the arrangement of reinforcement of cushion cap, reduced construction costs.
Description of drawings
Fig. 1 is the schematic flow sheet of the construction technology step of explosion method of the present invention.
Fig. 2 is the schematic flow sheet of companding method construction technology step of the present invention.
Have among the figure: prefabricated tubular pile 1, hollow pile point 2, explosive 3 is ignited lead 4, explosive expansion 5, filler 6, back pouring concrete 7, depression bar 8.
The specific embodiment
Explosion method embodiment: prefabricated tubular pile external diameter Φ 500mm, internal diameter Φ 340mm, the long 10m of stake, soil layer is a silty clay, bearing course at pile end is a strong-weathered rock.During construction, measure the pile positioning unwrapping wire earlier, put special hollow pile point well, with 400 tons Static pressure pile driver prefabricated tubular pile and hollow pile point are depressed into predetermined absolute altitude then, put into quick-fried medicine of 0.8kg and ignition, record an explosive expansion diameter of phi 1000mm, insert filler 0.4m such as rubble at last
3, after water C30 concrete 0.3m
3Finish the construction of the prefabricated tubular pile that has enlarged footing.
Companding method embodiment: prefabricated tubular pile external diameter Φ 500mm, internal diameter Φ 340mm, the long 12m of stake, soil layer is followed successively by: miscellaneous fill, silty clay, bearing course at pile end are plastic clay.Behind the measurement and positioning unwrapping wire, put special stake point well, with 400 tons Static pressure pile driver prefabricated tubular pile and special stake point are depressed into predetermined absolute altitude then, and be the weight impact pile point of 300mm with diameter, make stake sharp sinking 700mm (can make the gap that 700mm is arranged between a point and the pile tube like this), insert the high rubble of 800mm then, ram rubble with weight again, make its to around prolong expansion, so repeated multiple times reaches design standard until the hammering pile penetration, irritates at last again and puts 0.2 cubic metre of C30 concrete, so just form enlarged footing, finished the construction of the prefabricated tubular pile that has enlarged footing.
Claims (2)
1. a job practices that has the prefabricated tubular pile of enlarged footing is characterized in that the enlarged footing of prefabricated tubular pile bottom adopts the method for blast to form, and its concrete construction technology is as follows:
1) utilize pile sinking machinery that prefabricated tubular pile (1) and hollow pile point (2) are sink to predetermined absolute altitude;
2) utilize the middle hole of hollow pile point (2) to throw in explosive (3);
3) ignition charge (3);
4) form explosive expansion head (5) at the stake end;
5) in explosive expansion head (5), throw in filler (6), and compacting;
6) pouring concrete (7) forms the stake end and enlarges the reinforcement district.
2. the job practices that has the prefabricated tubular pile of enlarged footing according to claim 1 is characterized in that in construction technology, and the method that forms enlarged footing at the stake end is:
1) utilize pile sinking machinery that prefabricated tubular pile (1) and hollow pile point (2) are sink to predetermined absolute altitude,
2) in prefabricated tubular pile (1), with depression bar (8) hammering downwards hollow pile point (2) is continued to pressing down, and make hollow pile point (2) around to extending out out,
4) between hollow pile point (2) and prefabricated tubular pile (1), throw in filler,
5) use depression bar (8) hammering downwards to make again and throw in the downward and expansion towards periphery of filler, and compacting, form an end expansion and strengthen the district, at stake end formation enlarged footing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100948518A CN100516377C (en) | 2005-10-17 | 2005-10-17 | Construction method for prefabricated tubular pile with expanding head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100948518A CN100516377C (en) | 2005-10-17 | 2005-10-17 | Construction method for prefabricated tubular pile with expanding head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1749484A true CN1749484A (en) | 2006-03-22 |
| CN100516377C CN100516377C (en) | 2009-07-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100948518A Expired - Fee Related CN100516377C (en) | 2005-10-17 | 2005-10-17 | Construction method for prefabricated tubular pile with expanding head |
Country Status (1)
| Country | Link |
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| CN (1) | CN100516377C (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429353C (en) * | 2006-06-27 | 2008-10-29 | 中国矿业大学 | Explosion-enlarging stake construction process |
| CN101153489B (en) * | 2006-09-21 | 2010-06-16 | 王国奋 | Bottom expanding and piling method by demolishing of pipe sank prefabricated steel concrete bottom expansion pile |
| CN101153490B (en) * | 2006-09-21 | 2010-06-23 | 王国奋 | Bottom expanding and piling method by demolishing of pipe sank prefabricated steel concrete bottom expansion pile |
| CN101936004A (en) * | 2010-08-25 | 2011-01-05 | 张继红 | Precast expanding pile as well as construction method and construction mechanical equipment thereof |
| CN102051877A (en) * | 2010-12-01 | 2011-05-11 | 张继红 | Prefabricated squeezing-expanding pile and construction method thereof |
| CN103290837A (en) * | 2013-06-06 | 2013-09-11 | 金陵科技学院 | Construction method of explosive expanding of cast-in-place pile and air exhausting device thereof |
| CN103821146A (en) * | 2014-02-12 | 2014-05-28 | 杭州建工集团有限责任公司 | Pile detonating and cutting construction process for PC (prestressed concrete) tubular piles |
| CN104727309A (en) * | 2015-02-02 | 2015-06-24 | 中国电力工程顾问集团中南电力设计院有限公司 | Construction technology of squeeze-in expanded-base pipe pile |
| CN105113501A (en) * | 2015-08-14 | 2015-12-02 | 太原理工大学 | External expansion type large-diameter cylinder suction pile provided with explosive enlargement device |
| CN105649015A (en) * | 2016-02-01 | 2016-06-08 | 安徽理工大学 | Anti-sedimentation tubular pile for blasting grouting |
| CN112144522A (en) * | 2020-10-20 | 2020-12-29 | 王继忠 | Construction method of prestressed pipe pile and special prestressed pipe pile thereof |
| CN112482357A (en) * | 2020-12-04 | 2021-03-12 | 浙大城市学院 | Drilling tool for pre-blasting cement mixing pile suitable for hard soil layer and application method thereof |
-
2005
- 2005-10-17 CN CNB2005100948518A patent/CN100516377C/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100429353C (en) * | 2006-06-27 | 2008-10-29 | 中国矿业大学 | Explosion-enlarging stake construction process |
| CN101153489B (en) * | 2006-09-21 | 2010-06-16 | 王国奋 | Bottom expanding and piling method by demolishing of pipe sank prefabricated steel concrete bottom expansion pile |
| CN101153490B (en) * | 2006-09-21 | 2010-06-23 | 王国奋 | Bottom expanding and piling method by demolishing of pipe sank prefabricated steel concrete bottom expansion pile |
| CN101936004A (en) * | 2010-08-25 | 2011-01-05 | 张继红 | Precast expanding pile as well as construction method and construction mechanical equipment thereof |
| CN102051877A (en) * | 2010-12-01 | 2011-05-11 | 张继红 | Prefabricated squeezing-expanding pile and construction method thereof |
| CN102051877B (en) * | 2010-12-01 | 2012-05-30 | 张继红 | Prefabricated squeezing-expanding pile and construction method thereof |
| CN103290837A (en) * | 2013-06-06 | 2013-09-11 | 金陵科技学院 | Construction method of explosive expanding of cast-in-place pile and air exhausting device thereof |
| CN103821146B (en) * | 2014-02-12 | 2015-08-19 | 杭州建工集团有限责任公司 | A kind of explosion cutting piles technique of PC pile tube |
| CN103821146A (en) * | 2014-02-12 | 2014-05-28 | 杭州建工集团有限责任公司 | Pile detonating and cutting construction process for PC (prestressed concrete) tubular piles |
| CN104727309A (en) * | 2015-02-02 | 2015-06-24 | 中国电力工程顾问集团中南电力设计院有限公司 | Construction technology of squeeze-in expanded-base pipe pile |
| CN105113501A (en) * | 2015-08-14 | 2015-12-02 | 太原理工大学 | External expansion type large-diameter cylinder suction pile provided with explosive enlargement device |
| CN105113501B (en) * | 2015-08-14 | 2017-05-31 | 太原理工大学 | Formula large diameter cylinder suction anchor is extended out with explosive expansion device |
| CN105649015A (en) * | 2016-02-01 | 2016-06-08 | 安徽理工大学 | Anti-sedimentation tubular pile for blasting grouting |
| CN105649015B (en) * | 2016-02-01 | 2017-06-16 | 安徽理工大学 | A kind of blasting grouting anti-settling pile tube |
| CN112144522A (en) * | 2020-10-20 | 2020-12-29 | 王继忠 | Construction method of prestressed pipe pile and special prestressed pipe pile thereof |
| CN112482357A (en) * | 2020-12-04 | 2021-03-12 | 浙大城市学院 | Drilling tool for pre-blasting cement mixing pile suitable for hard soil layer and application method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100516377C (en) | 2009-07-22 |
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Address after: 210037 Jiangsu Province, Nanjing City Central Lake Garden Room 401 13 Patentee after: Wei Longwu Address before: 210037 Jiangsu Province, Nanjing City Central Lake Garden Room 401 13 Patentee before: Wei Longwu |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Construction method for prefabricated tubular pile with expanding head Effective date of registration: 20120713 Granted publication date: 20090722 Pledgee: Bank of Communications Ltd Jiangsu branch Pledgor: Wei Longwu Registration number: 2012990000371 |
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Date of cancellation: 20131106 Granted publication date: 20090722 Pledgee: Bank of Communications Ltd Jiangsu branch Pledgor: Wei Longwu Registration number: 2012990000371 |
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