CN1216212C - Pile forming technology for nail-shaped pile - Google Patents
Pile forming technology for nail-shaped pile Download PDFInfo
- Publication number
- CN1216212C CN1216212C CN 200310106224 CN200310106224A CN1216212C CN 1216212 C CN1216212 C CN 1216212C CN 200310106224 CN200310106224 CN 200310106224 CN 200310106224 A CN200310106224 A CN 200310106224A CN 1216212 C CN1216212 C CN 1216212C
- Authority
- CN
- China
- Prior art keywords
- immersed tube
- pile
- steel casing
- steel protective
- cfg
- 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
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a pile forming technology for nail-shaped piles suitable for processing deep, thick and soft soil foundations. The pile forming technology comprises the operation steps: arranging a steel protective drum 2 which has large upper opening and small lower opening, and locating the small opening end of the steel protective drum 2 on the ground; inserting an immersed tube 1 into the steel protective drum, and inserting the immersed tube transversely into the upper opening of the steel protective drum by a bolt 3 so as to clamp both ends of the bolt on the upper opening of the steel protective drum; pressing the immersed tube downward by an immersed tube machine, and firstly pressing the steel protective drum to a preset depth; pulling the bolt, and the continuously pressing the immersed tube downward to a designed pile depth; drawing out the immersed tube upward, and meantime refilling materials of plain concrete or CFG and the like. into the immersed tube, and finally pressing the immersed tube downward to expand diameter; and lifting the immersed tube upward to the position of the steel protective drum to be drawn out with the steel protective drum, and then filling materials of concrete or CFG, and the like, so that a plain concrete pile or a CFG pile which has a cap is formed.
Description
Technical field
The present invention is a kind of deep soft soil foundation treatment process method that is applicable to, belongs to the technical field that pile foundation is handled.
Background technology
In expressway works, Soft Ground is to guarantee that one of key of project link, existing consolidation draining method, soil-cement pile composite foundation method etc. handle shallow layer soft soil foundation and have good effect.For thickness greater than the weak soil more than the 15m, semi-rigid stake such as plain concrete pile, CFG stake is alternative method, the common construction of these methods is facility and the technology that adopts similar tube-sinking cast-in-situ pile, by mode pore-formings such as vibration or hammer hidden pipe, materials such as concrete perfusion, CFG in pipe then, formin concrete pile or CFG stake are formed composite foundation with all soil of stake, thereby the raising bearing capacity of foundation soil reduces foundation settlement.For expressway works, this semi-rigid stake soft soil foundation exists some problems: may produce upwards " thrusting " effect after (1) roadbed filling is finished, destroy roadbed, cause differential settlement; (2) for preventing this " thrusting " effect that makes progress, need to have strengthened the complexity of construction technology at stake top design one deck rigidity cushion cap, increased construction costs; (3) pile spacing is less, thereby the construction costs height.
Summary of the invention
Technical problem: the objective of the invention is the problem that exists in the above-mentioned working design, the construction technology of pipeline sinking pile is improved, proposed a kind of process of nail-shaped pile pile.
Technical scheme: the present invention is that (C refers to Cement: cement with plain concrete pile or CFG, F refers to Fly-ash: flyash, G refers to Gravel: rubble, the three mixes according to a certain percentage) work progress of pile driving construction and rigidity or semi-rigid cushion cap organically combines, form the new technology worker's method of a cover, its operating procedure is as follows:
(1), the steel casing that upper shed is big, under shed is little is set, the little openend of steel casing is positioned at ground;
(2), immersed tube is inserted the steel casing, in upper shed place of steel casing,, make the two ends of latch be stuck in upper shed place of steel casing with the laterally inserted immersed tube of latch;
(3), immersed tube is pressed down, the steel casing is pressed onto desired depth earlier with immersed tube machinery;
(4), extract latch, continue to press down immersed tube then, make immersed tube be pressed onto a design stake degree of depth;
(5), upwards extract immersed tube, backfill plain concrete or CFG material in pipe press down hole enlargement with immersed tube more simultaneously;
(6), immersed tube upwards rises to steel casing place, extracts with the steel casing, and concrete perfusion or CFG material, so just formed the plain concrete pile or the CFG stake of band cap.
Beneficial effect: this worker's method easy construction, simple to operate.Its advantage mainly contains:
(1) pile cover is once constructed with stake and is finished, and pile cover can play the effect of part cushion cap, does not need to be provided with cushion cap again;
(2) under the effect of roadbed overlying burden, the existence of pile cover will make pile body and all native compatible deformations of stake, and under native arching action, foundation deformation is tending towards evenly, avoid pile body to make progress to " penetrating into " destruction of roadbed;
(3) the steel casing can push the shallow-layer soil body in the process of pressing down, and makes foundation surface form an intensity bigger " crust layer ", improves the bearing capacity on ground top layer;
(4) can increase exponentially pile spacing, thereby save construction investment by a relatively large margin.
Description of drawings
Fig. 1 is a construction technology process schematic diagram of the present invention.Immersed tube 1, steel casing 2, latch 3, nail-shaped pile 4 are wherein arranged.
The specific embodiment
The process of nail-shaped pile pile of the present invention is characterized in that its operating procedure is as follows:
(1), the steel casing 2 that upper shed is big, under shed is little is set, the little openend of steel casing 2 is positioned at ground; The top of this steel casing 2 is the pipe shape, and the bottom is coniform, makes with steel plate;
(2) immersed tube 1 is inserted steel casing 2,,, make the two ends of latch 3 be stuck in upper shed place of steel casing 2 with latch 3 laterally inserted immersed tube 1 in upper shed place of steel casing 2;
(3) with immersed tube machinery just immersed tube 1 press down, steel casing 2 is pressed onto desired depth earlier;
(4) extract latch 3, continue then to press down immersed tube 1, make immersed tube 1 be pressed onto the design stake degree of depth;
(5) upwards extract immersed tube 1, material such as backfill plain concrete or CFG in pipe presses down immersed tube hole enlargement more simultaneously;
(6) immersed tube 1 upwards rises to steel casing 2 places, extract with steel casing 2, and materials such as concrete perfusion or CFG, so just formed the plain concrete pile or the CFG stake of band cap.
Claims (1)
1, a kind of process of nail-shaped pile pile is characterized in that its operating procedure is as follows:
1) the steel casing (2) that upper shed is big, under shed is little is set, the little openend of steel casing (2) is positioned at ground;
2) immersed tube (1) is inserted steel casing (2), upper shed place in steel casing (2) with the laterally inserted immersed tube of latch (3) (1), makes the two ends of latch (3) be stuck in upper shed place of steel casing (2);
3) with immersed tube machinery immersed tube (1) is pressed down, steel casing (2) is pressed onto desired depth earlier;
4) extract latch (3), continue to press down immersed tube (1) then, make immersed tube (1) be pressed onto the design stake degree of depth;
5) upwards extract immersed tube (1), backfill plain concrete or CFG material in pipe press down hole enlargement with immersed tube more simultaneously;
6) immersed tube (1) upwards rises to steel casing (2) and locates, extract with steel casing (2), and concrete perfusion or CFG material, so just formed the plain concrete pile or the CFG stake of band cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310106224 CN1216212C (en) | 2003-11-07 | 2003-11-07 | Pile forming technology for nail-shaped pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310106224 CN1216212C (en) | 2003-11-07 | 2003-11-07 | Pile forming technology for nail-shaped pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1542234A CN1542234A (en) | 2004-11-03 |
| CN1216212C true CN1216212C (en) | 2005-08-24 |
Family
ID=34334032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310106224 Expired - Fee Related CN1216212C (en) | 2003-11-07 | 2003-11-07 | Pile forming technology for nail-shaped pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1216212C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100336982C (en) * | 2004-12-23 | 2007-09-12 | 东南大学 | Nail type cement soil stirring pile operation method |
| CN101818493A (en) * | 2010-03-23 | 2010-09-01 | 南通宏华建筑安装有限公司 | Construction method of compound ground base |
| CN102425162B (en) * | 2011-12-13 | 2014-11-12 | 中交第二公路工程局有限公司 | Steel sleeve mechanism for construction of pile footing composite foundation reserved hole with soft soil foundation top-down construction method |
| CN102518133B (en) * | 2011-12-15 | 2015-05-20 | 昆明理工大学 | Pile sinking method for prestress hollow pipe piles by aid of follow-up sleeve |
| CN105970922A (en) * | 2016-05-16 | 2016-09-28 | 浙江工业大学 | Method for treating soft coastal saline foundation by injecting industrial waste residues into bidirectional nail-shaped stirring pile |
| CN106192996B (en) * | 2016-08-26 | 2018-06-26 | 武汉谦诚桩工科技股份有限公司 | A kind of T shape drilling tools of construction method and T shapes the cast pile driving construction of T shapes stake |
-
2003
- 2003-11-07 CN CN 200310106224 patent/CN1216212C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1542234A (en) | 2004-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1888331A (en) | Guide pit type manual pot holing pile reinforing and underpinning method for building foundation and composite supporting pile | |
| CN1216212C (en) | Pile forming technology for nail-shaped pile | |
| CN1916296A (en) | Construction technique for self-leading hole at pile tip of embrace press type PHC tubular pile to enter rock through static pressure | |
| CN1743561A (en) | Column-hammer forced tamping substitution method | |
| CN101713201B (en) | Underground hole-forming device of hydraulic grab bucket | |
| CN107938652B (en) | Rock-inlaid steel reinforced cement stirring wall and construction method thereof | |
| CN1206421C (en) | A drill hole grout pile drag reduction extraction process | |
| CN1182301C (en) | Technology for boring and prefabricating cast piles for foundation of building | |
| CN207003459U (en) | Soft foundation cluster type layering precipitation no-arbitrary pricing pipe rams system | |
| CN1827924A (en) | Foundation treatment method by static pressure replacement and multi-purpose press pipe thereof | |
| CN1158434C (en) | Soft foundation composite ground base construction method for field pouring pipe pile with large diameter | |
| CN100445471C (en) | Cross-shaped vibration wing | |
| CN201024415Y (en) | Vibrated wing for liquefied ground treatment | |
| CN1189628C (en) | Extradeep extruding and ramming method | |
| CN1740457A (en) | Vibration process of eliminating wet foundation falling for CFG pile | |
| CN213358613U (en) | Pulling device for steel pipe slope protection pile | |
| CN100487204C (en) | Composite pile shoe structured device | |
| CN201148617Y (en) | Wrapping opening-shaped pile tip | |
| CN1076064C (en) | Method for handling foundation | |
| CN2172311Y (en) | Earther taking apparatus for planting pile | |
| CN219909030U (en) | Mattress layer of composite foundation | |
| CN1162590C (en) | Process for drilling hole and soil taking and transplanting pile for steel reinforced concrete prefabricated pile | |
| CN110629742B (en) | Soft foundation bearing capacity improving method | |
| CN217810998U (en) | Construction device for improving bearing capacity of rock-socketed pile by utilizing sediments | |
| CN108193686A (en) | A kind of steel pipe grouting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050824 Termination date: 20151107 |
|
| EXPY | Termination of patent right or utility model |