CN1128906C - Method for constructing club-footed hollow pile - Google Patents
Method for constructing club-footed hollow pile Download PDFInfo
- Publication number
- CN1128906C CN1128906C CN 01105785 CN01105785A CN1128906C CN 1128906 C CN1128906 C CN 1128906C CN 01105785 CN01105785 CN 01105785 CN 01105785 A CN01105785 A CN 01105785A CN 1128906 C CN1128906 C CN 1128906C
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- China
- Prior art keywords
- hollow pile
- pile
- mandrel
- concrete
- stake
- Prior art date
- 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.)
- Expired - Fee Related
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- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a construction method of a bottom-expanded hollow pile. The present invention mainly comprises the steps that a hollow pile is positioned and driven into a foundation; a definite quantity of concrete is filled into the hollow pile; a core axle is put in a cavity; the core axle is statically pressured or hammered so as to extrude the concrete from the lower end of the hollow pile to form an enlarged large. The construction method can effectively combines the advantages of the hollow pile and a ramming expansion cast pile; the bottom-expanded hollow pile has the characteristics of high intensity, high bearing capability and low cost.
Description
Technical field
The present invention relates to a kind of job practices that expands end hollow pile.
Background technology
At present used tamping, expansion and grounting piles adds bearing capacity owing to its enlarged footing can make full use of bearing course at pile end, thereby it is long to reduce stake, reduces cost.But the immersed tube limited length of tamping, expansion and grounting piles, its pile body length is shorter, and enlarged footing is difficult to utilize darker bearing stratum; Secondly pile concrete is owing to be in underground perfusion and be subjected to the influence of factors such as tube drawing, soil compaction, and pile body easily produces quality problems such as necking down, broken pile, and its intensity is limited; In addition, tamping, expansion and grounting piles is in work progress, and the noise and vibration of generation pollutes environment, and surrounding building is easily caused damage, and tamping, expansion and grounting piles also is the problem that the solution of waiing upon is arranged to the adverse effect of environment.The use tamping, expansion and grounting piles is all prohibited in present most of city, and this has just caused tremendous loss concerning the wide geographic area of the suitable employing of geological conditions tamping, expansion and grounting piles.And prefabricated hollow pile has pre-stress hollow pile tube, the stake of precast hollow side, steel pipe pile etc., and quality guaranteed easily when this class hollow pile was made, the pile strength height, but cost is also higher relatively, is unfavorable for extensive employing.
The object of the present invention is to provide a kind of job practices that expands end hollow pile, make pile body have high strength and high-bearing capacity, and with low cost.
Summary of the invention
For achieving the above object, the present invention is by the following technical solutions:
A kind of job practices that expands end hollow pile may further comprise the steps:
1) the stake end of hollow pile is loaded onto prefabricated concrete stake point or closed steel plate pile crown;
2) will squeeze into behind the pile positioning in the ground;
3) in the cavity of hollow pile, drop into concrete;
4) mandrel is put into cavity,, concrete is extruded the formation enlarged footing from the hollow pile lower end by mandrel with stake machine static pressure or hammering mandrel;
5) extract mandrel.
The present invention increases by an enlarged footing on the basis of hollow pile, increase the bearing capacity of hollow pile, and the length of hollow pile just can correspondingly shorten, and this just makes whole cost descend, and has both utilized the high-intensity characteristic of hollow pile, has utilized the enlarged footing of compaction pile again.The present invention can adopt static pressure or hammering method that hollow pile is driven underground, and adopts static pressure or hammering method with the concrete formation enlarged footing of being driven underground.Because can adopt static pressure to form enlarged footing, noiselessness and vibration make the range of application of job practices of the present invention wider, more help promoting the use of of this method.Compare with tamping, expansion and grounting piles simultaneously, lacked a tube drawing process, make the construction skill simple more, quick.
Moreover under the long situation of identical stake, the expanded bore pile that adopts job practices of the present invention to form has higher bearing capacity, thereby can reduce the stake quantity that engineering is used.
The job practices of hollow pile at the bottom of the above-mentioned expansion increases by a step after the 4th step: with the stake machine hollow pile and mandrel are sunk simultaneously, make enlarged footing be subjected to secondary extrusion to form bigger diameter, can make hollow pile tightr with combining of enlarged footing simultaneously.Make the basis carrying of hollow pile bigger, the length of hollow pile is further shortened, cost further descends.
Description of drawings
The utility model will be further described below in conjunction with accompanying drawing and embodiment:
Fig. 1 is the embodiment of the invention 1 a construction overall process schematic diagram;
Fig. 2 is the embodiment of the invention 2 construction overall process schematic diagrames.
With reference to accompanying drawing, number in the figure and parts are: hollow pile 1, concrete 2, stake point 3, mandrel 4, enlarged footing 5.
The specific embodiment
Embodiment 1:
With reference to accompanying drawing 1, a kind of job practices that expands end hollow pile may further comprise the steps:
1) the stake end of hollow pile 1 is loaded onto prefabricated concrete stake point 3 or closed steel plate pile crown 3;
2) will squeeze in the ground behind hollow pile 1 location; It is characterized in that further comprising the steps of:
3) in the cavity of hollow pile 1, drop into concrete 2;
4) mandrel 4 is put into cavity,, coagulation 2 soil are extruded formation enlarged footing 5 from hollow pile 1 lower end by mandrel 4 with stake machine static pressure or hammering mandrel 4;
5) extract mandrel 4, form and expand end hollow pile.
Embodiment 2:
After the 4th step, increase by a step as different from Example 1: hollow pile 1 and mandrel 4 are sunk simultaneously with the stake machine.Make the enlarged footing 5 of concrete 2 at the bigger diameter of underground formation.
Claims (2)
1, a kind of job practices that expands end hollow pile may further comprise the steps:
1) the stake end of hollow pile is loaded onto prefabricated concrete stake point or closed steel plate pile crown;
2) will squeeze in the ground behind the hollow pile location; It is characterized in that further comprising the steps of:
3) in the cavity of hollow pile, drop into concrete;
4) mandrel is put into cavity,, concrete is extruded the formation enlarged footing from the hollow pile lower end by mandrel with stake machine static pressure or hammering mandrel;
5) extract mandrel.
2, the job practices of hollow pile at the bottom of the expansion as claimed in claim 1 is characterized in that the 4th) increase by a step after the step: with a stake machine hollow pile and mandrel are sunk simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01105785 CN1128906C (en) | 2001-03-22 | 2001-03-22 | Method for constructing club-footed hollow pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01105785 CN1128906C (en) | 2001-03-22 | 2001-03-22 | Method for constructing club-footed hollow pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1309209A CN1309209A (en) | 2001-08-22 |
| CN1128906C true CN1128906C (en) | 2003-11-26 |
Family
ID=4654853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01105785 Expired - Fee Related CN1128906C (en) | 2001-03-22 | 2001-03-22 | Method for constructing club-footed hollow pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1128906C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100334304C (en) * | 2004-12-06 | 2007-08-29 | 雷玉华 | Construction method for making hollow pile with large end at bottom by casting concrete in situ |
| CN101831908A (en) * | 2010-05-11 | 2010-09-15 | 武汉华威建筑桩工机械有限责任公司 | Large-diameter ultra-deep static-pressure single tube immersing ramming grouting pile construction process and device |
| CN103590399B (en) * | 2013-10-24 | 2017-01-11 | 叶香雄 | Expanded pile construction method |
| CN104779158A (en) * | 2014-01-09 | 2015-07-15 | 北大方正集团有限公司 | Field effect transistor manufacturing method |
| CN110004946B (en) * | 2019-03-27 | 2021-03-23 | 河海大学 | Pile tip of post-grouting miniature steel pipe pile, rapid emergency reinforcing structure of soil slope of pile tip and construction method |
| CN115305912A (en) * | 2022-02-14 | 2022-11-08 | 高云飞 | Tubular pile grouting, tamping and vibrating bottom expanding construction method |
-
2001
- 2001-03-22 CN CN 01105785 patent/CN1128906C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1309209A (en) | 2001-08-22 |
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