CN1710214A - Method for constructing hydraulic soil-extruded pile composite foundation - Google Patents
Method for constructing hydraulic soil-extruded pile composite foundation Download PDFInfo
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- CN1710214A CN1710214A CN 200510042696 CN200510042696A CN1710214A CN 1710214 A CN1710214 A CN 1710214A CN 200510042696 CN200510042696 CN 200510042696 CN 200510042696 A CN200510042696 A CN 200510042696A CN 1710214 A CN1710214 A CN 1710214A
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- drill bit
- soil
- crush zone
- pile
- soil compaction
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a construction technique of a hydraulic squeezing pile complex groundwork. Work with hydraulic rotating device and the squeezing drill on the groundwork, squeezing the drill head in to the groundwork with the rotate motion and static pressure provided by the device, evacuating the dirt away from the drill head till it reaches the determined depth; fill the hole left by the drill with concrete cement layer by layer or directly pour the cement from the drill core the moment the drill is pulled out; finally lay tufting layer on the processed groundwork surface. The invention is able to reduce shock, noise and pollution while the special drill head toughens the dirt around the pile so to enhance the dirt bearing capacity. The pile length and amount can be reduced due to the abrading resistance around the pile is enhanced so to lower the cost and shorten construction cycle.
Description
Technical field
The ground that the invention belongs to civil engineering is handled, and relates to a kind of job practices, particularly a kind of employing hydraulic soil-extruded pile composite foundation job practices.
Background technology
The construction technology of composite foundation in the foundation field, method commonly used at present has sandstone compaction pile, lime-soil compaction pile, CFG construction method etc., because said method uses the restriction of equipment performance, said method all has and has noise, impact endurance test shock respectively and environmental protection and surrounding enviroment are polluted, perhaps adopt long auger center guncreting, boring procedure must have loading and the transportation that gets out soil, and the expense that takes place of cleaning, and boring is exported the face of land with soil and also can be caused certain environment pollution.Therefore prior art not only in environmental protection, towards aspects such as vibrating noise, pollutions, and since the working procedure complexity effectively compaction pile week soil, cause the construction cost increasing of engineering.
Summary of the invention
In order to solve defective or the deficiency that the above-mentioned background technology exists, the objective of the invention is to, a kind of job practices of hydraulic soil-extruded pile composite foundation is provided.
To achieve these goals, the technical scheme that the present invention takes is, a kind of job practices of hydraulic soil-extruded pile composite foundation, it is characterized in that, the soil compaction drill bit that adopts the hydraulic rotating device and install on device carries out foundation construction, the shape of soil compaction drill bit comprises drill bit, crush zone, stable region, crush zone and drilling rod more from bottom to top, leaves the centre bore that is connected with the concrete device on the drilling rod, and its job practices comprises the steps:
1) by the rotary power and the static pressure of hydraulic rotating device special-purpose soil compaction drill bit is clamp-oned in the foundation soil, soil compaction drill bit pore forming process makes the crush zone and the stable region of the regolith soil compaction drill bit in the boring be squeezed to the periphery of being holed by force, until the desired depth of design pore-forming;
2) the soil compaction drill bit is proposed then, layering in the hole, gradation filling tamped pile; Or when carrying brill, directly carry out pile from drilling rod centre bore guncreting;
3) in grade level scope after treatment, promptly lay mattress layer at the end face of pile.
Method of the present invention can reduce impact endurance test shock, noise, pollution, again can be effectively compacted to the soil around the stake in pore-forming by the soil compaction drill bit, and first mate's degree improves the bearing capacity of inter-pile soil, thereby improves Bearing Capacity of Composite Foundation.Because increased the frictional resistance of soil around the stake, it is long to shorten stake simultaneously, reduces the stake number, reduces the engineering cost spending greatly, effectively shortens construction period.
Description of drawings
Fig. 1 is a soil compaction drill bit structure schematic diagram of the present invention;
Fig. 2 is construction technology step schematic diagram of the present invention (directly is pressed into concrete placing from the drilling rod centre bore and carries out pile).
The present invention is described in further detail below in conjunction with embodiment that accompanying drawing and inventor provide.
The specific embodiment
The job practices of hydraulic soil-extruded pile composite foundation of the present invention, the soil compaction drill bit that adopts the hydraulic rotating device and install on device carries out foundation construction, the shape of its soil compaction drill bit comprises drill bit 1, crush zone 2, stable region 3, crush zone 4 and drilling rod 5 more from bottom to top, have on the drilling rod 5 and leave the centre bore that is connected with the concrete device, this centre bore runs through whole soil compaction drill bit (Fig. 1), the soil compaction drill bit is the little tapered structure broad in the middle in two, its drill bit 1 and crush zone 2 are transport screw, stable region 3 is an isometrical cylinder up and down, and crush zone 4 is a reverse acting spiral again.Its operating principle is: the drill bit transport screw is isometrical blade, trip-out pick effect in pressing down drilling process; Its crush zone 2 is on the top of drill bit 1, it still is transport screw, but blade is not for isometrical, blade is a conical spiral from descending, the external diameter of a part of blade of crush zone topmost is isometrical, by the conical spiral blade of crush zone drill bit 1 is got out soil and be uploaded to crush zone, force soil is expressed to the sidewall of boring by the conical spiral of crush zone; The external diameter of its stable region 3 is an isometrical cylinder up and down, keeps the stability of pore-forming to guarantee the soil compaction drill bit in boring the pick course of work; Crush zone is the reverse acting spiral blade at soil compaction drill bit topmost again, and the soil of borehole sidewall suppressing action by reverse acting spiral in going down process is expressed on all sidewalls of boring once more by force.
The length of above-mentioned soil compaction drill bit is respectively: the length of drill bit 1 is less than the length of crush zone 2, the length of crush zone 2 is greater than the stable region 3 and the length of crush zone 4 again, wherein crush zone 4 length are greater than the length of stable region 3 again, and such being provided with can guarantee the smooth work of soil compaction drill bit.
The job practices of hydraulic soil-extruded pile composite foundation comprises the steps:
1) by the rotary power and the static pressure of hydraulic rotating device the soil compaction drill bit is clamp-oned in the foundation soil, soil compaction drill bit pore forming process makes the crush zone and the stable region of the regolith soil compaction drill bit in the boring be squeezed to the periphery of being holed by force, until the desired depth of design pore-forming;
2) the soil compaction drill bit is proposed then, layering in the hole, gradation filling tamped pile; Or when carrying brill, directly be pressed into concrete placing and carry out pile (Fig. 2) from the drilling rod centre bore;
3) in grade level scope after treatment, promptly lay mattress layer at the end face of pile.
Above-mentioned step 2) filler in is meant a kind of or their mixture in brickbat, tile fragment, concrete block, cobble, flyash, concrete, rubble, dirt, the soil.
Mattress layer in the above-mentioned step 3) is dirt, sandstone or hardcore bed.
The technique effect that the present invention brings is:
1. improve the bearing capacity of stake.This method is in pore forming process, make hole soil layer on every side form a highdensity soil layer by special-purpose soil compaction drill bit, make surperficial frictional resistance increase by 30%, in saturated yielding soil, in the liquefied sand since the increase of bearing capacity that the cost of transmission load per ton is reduced to is minimum.
Shockproof when 2. constructing, noise.Owing to adopt hydraulic rotating power to make noise, vibrations reduce to minimum than other impact holing compacting method, CFG method etc.
3. do not have the soil of digging out, reduced working procedure, in the boring procedure, bore the regolith and be expressed to stake soil layer on every side fully, the loading and the freight of secondary cleaning, discarded soil no longer takes place, greatly reduce engineering cost, reduced pollution environment.
4. pile-forming speed is fast, reduces the stake consumption.Because it is effective compacted that this method has been carried out the soil around the stake, inserts and concrete materials therefore when pile, have been significantly reduced when pore-forming.
5. operating efficiency maximization, equipment, personnel's less investment make the cost of pile reduce.
Claims (5)
1. the job practices of a hydraulic soil-extruded pile composite foundation, it is characterized in that, the soil compaction drill bit that adopts the hydraulic rotating device and install on device carries out foundation construction, the shape of soil compaction drill bit comprises drill bit, crush zone, stable region, crush zone and drilling rod more from bottom to top, leave the centre bore that is connected with the concrete device on the drilling rod, its job practices comprises the steps:
1) by the rotary power and the static pressure of hydraulic rotating device the soil compaction drill bit is clamp-oned in the foundation soil, soil compaction drill bit pore forming process makes the crush zone and the stable region of the regolith soil compaction drill bit in the boring be squeezed to the periphery of being holed by force, until the desired depth of design pore-forming;
2) the soil compaction drill bit is proposed then, layering in the hole, gradation filling tamped pile; Or when carrying brill, directly carry out pile from drilling rod centre bore guncreting;
3) in grade level scope after treatment, promptly lay mattress layer at the end face of pile.
2. the method for claim 1 is characterized in that, described soil compaction drill bit is the little structure broad in the middle in two, and its drill bit is the isometrical blade of transport screw; Crush zone is a cone body on drill bit top, still is transport screw, and its blade is not for isometrical; The stable region external diameter is an isometrical cylinder up and down, and crush zone topmost blade external diameter is isometrical; Crush zone is the reverse acting spiral blade at the topmost of soil compaction drill bit again.
3, the method for claim 1 is characterized in that, described step 2) in filler be a kind of or their mixture in brickbat, tile fragment, concrete block, cobble, flyash, concrete, rubble, dirt, the soil.
4, the method for claim 1 is characterized in that, the mattress layer in the described step 3) is dirt, sandstone or hardcore bed.
5. the method for claim 1 is characterized in that, the length of described drill bit is less than the length of crush zone, and the length of crush zone is greater than the stable region and the length of crush zone again, wherein again crush zone length greater than the length of stable region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100426965A CN100344834C (en) | 2005-05-23 | 2005-05-23 | Method for constructing hydraulic soil-extruded pile composite foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100426965A CN100344834C (en) | 2005-05-23 | 2005-05-23 | Method for constructing hydraulic soil-extruded pile composite foundation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1710214A true CN1710214A (en) | 2005-12-21 |
| CN100344834C CN100344834C (en) | 2007-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100426965A Expired - Fee Related CN100344834C (en) | 2005-05-23 | 2005-05-23 | Method for constructing hydraulic soil-extruded pile composite foundation |
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| CN (1) | CN100344834C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286969A (en) * | 2011-06-24 | 2011-12-21 | 黄琦峰 | Hole loosening process for displacement pile |
| CN102392611A (en) * | 2011-10-14 | 2012-03-28 | 武汉武船机电设备有限责任公司 | Threaded drill pipe without bringing out soil and pilling method without bringing out soil for simultaneously forming thread and smooth rod |
| CN104047284A (en) * | 2014-06-18 | 2014-09-17 | 石午江 | Method and device for manufacturing cross type pile with prism-shaped bottom end |
| CN104631443A (en) * | 2014-12-19 | 2015-05-20 | 王继忠 | Construction method for composite foundation |
| CN110331933A (en) * | 2019-07-13 | 2019-10-15 | 江龙 | Guncreting pile construction is bored with half soil compaction and its foundation pile bore forming method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1076980A (en) * | 1993-02-23 | 1993-10-06 | 何庆林 | Helical driller for concrete perfusion |
| JP3904274B2 (en) * | 1997-02-25 | 2007-04-11 | 日本コンクリート工業株式会社 | Construction method for building foundation |
| JP2002129557A (en) * | 2000-10-23 | 2002-05-09 | Tokyo Tokushu Kiso Kogyo:Kk | Pile burying method |
| CN1472397A (en) * | 2003-06-10 | 2004-02-04 | 张立军 | Constructing technology for pile core |
| CN2646214Y (en) * | 2003-06-11 | 2004-10-06 | 张立军 | Pile extruder |
-
2005
- 2005-05-23 CN CNB2005100426965A patent/CN100344834C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286969A (en) * | 2011-06-24 | 2011-12-21 | 黄琦峰 | Hole loosening process for displacement pile |
| CN102392611A (en) * | 2011-10-14 | 2012-03-28 | 武汉武船机电设备有限责任公司 | Threaded drill pipe without bringing out soil and pilling method without bringing out soil for simultaneously forming thread and smooth rod |
| CN104047284A (en) * | 2014-06-18 | 2014-09-17 | 石午江 | Method and device for manufacturing cross type pile with prism-shaped bottom end |
| CN104631443A (en) * | 2014-12-19 | 2015-05-20 | 王继忠 | Construction method for composite foundation |
| CN110331933A (en) * | 2019-07-13 | 2019-10-15 | 江龙 | Guncreting pile construction is bored with half soil compaction and its foundation pile bore forming method |
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| Publication number | Publication date |
|---|---|
| CN100344834C (en) | 2007-10-24 |
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