CN1995689B - Pile forming method of pile forming mechanism with gyro bit - Google Patents
Pile forming method of pile forming mechanism with gyro bit Download PDFInfo
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- CN1995689B CN1995689B CN200710056417XA CN200710056417A CN1995689B CN 1995689 B CN1995689 B CN 1995689B CN 200710056417X A CN200710056417X A CN 200710056417XA CN 200710056417 A CN200710056417 A CN 200710056417A CN 1995689 B CN1995689 B CN 1995689B
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Abstract
The invention discloses a gyro drill bit, piling mechanism with the gyro drill bit and the piling method. the piling mechanism with gyro drill bit comprises moving system, chassis, pile bracket, power system, tubular drilling bar, drill bit and high-pressure concrete-injection system. The drill bit is set at the head of drilling bar and the gyro piece in the middle of drill bit is the gyro piece with the equal diameter. Diameters of upper and lower gyro pieces are decreased gradually so as to form two tips up and down and the whole drill bit is gyro drill bit with gyro shape. The piling method is that soil displacement hole forming concrete injection piling method with no-soil and no-digging is applied in soft or under-consolidated soil. In geology with soft soil at the upper and powder soil or sand at the lower, repeated drilling hole is applied at the lower and the soil is lifted into the soft soil. Solid soil at the lower and soft soil at the upper are exchanged. Finally, the pile is formed by soil displacement, lifting drill and concrete injection. The sleeve can not be used to forming hole and there is no mud slurry discharged. The cost is decreased greatly and it is widely applied.
Description
Technical field
The present invention relates to a kind of pile foundation construction machinery and job practices of construction of structures, especially a kind of piling method that has the pile machinery of gyro bit.
Background technology
In the pile foundation construction of building, bridge, municipal administration, water conservancy, harbour engineering, adopt the auger pile usually, existing auger is except that the sub-fraction of drill bit, the sea whelk diameter of remainder all is that spiral distribution length that equate and long screw auger is long isometric with stake, and its rotational resistance is very big.When implementing the long pile driving construction of heavy caliber, owing to the huge power that makes of its resistance is high, or have no alternative but dwindle stake footpath, long, so often can not meet design requirement.Though and short auger spiral part is short, need to divide several times to creep into and carry soil, in weak soil, can't realize.Auger is used in the coastal silt clay, because the removing difficulty of cohesive soil can't be used it.When being with the auger injection heavy caliber length stake of casing, it is very difficult to pull out tube, and cost is high.Existing auger is carried by on the sea whelk, takes the soil body in the hole out of ground, and then removes, as the method among the Chinese ZL200410094076.1.
So, the place of geology characteristics such as, silt deep at coastal sludge, silt clay, silty clay, the auger of existing long and short auger, band sleeve and boring, heavy tube drawing stake machine all exist the defective of technology, bearing capacity and cost aspect.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of and can not excavate retaining wall, and can enter the pile machinery and the method thereof of certain depth hardpan without casing, promptly gyro bit, have the pile machinery and the piling method thereof of gyro bit.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of piling method that has the pile machinery of gyro bit, the sea whelk equal diameters of the drill bit mid portion of described gyro bit, top sea whelk and bottom sea whelk diameter reduce gradually, form upper and lower two points, whole drill bit is top in shape, is used for the soft pile of hard place base down, may further comprise the steps successively:
A. at first creep into the gyro rig, when bit drills is crossed weak soil arrival hardpan, earlier drill bit is pierced hard formation, after gyro bit all enters hard formation, brill is carried in beginning rotation in the same way, carry to weak soil, oppositely change and bore, pan soil between the isometrical sea whelk of drill bit is bored in the weak soil of all weak soils around clamp-oning by top, and the regolith of depositing between sea whelk is replaced as weak soil, and then is rotated in the forward and continues to creep into after sinking to creeping into the degree of depth that arrived to last time, after below the degree of depth that drill bit all enters last time once more and reaches, carry brill again, circulation repeats above-mentioned steps, until the degree of depth that reaches designing requirement;
B. after replacing the arrival projected depth up and down, the startup concrete pump is injected into concrete in the sharp down hole of gyro brill by defeated concrete conduit and notes concrete mouth, and the gyro brill is carried on pumping of concrete limit, limit, by gyro bit soil compaction pore-forming, the limit is carried and is bored marginal not up to design elevation, the concrete pile body of formin.
Before also being included in concrete initial set, reinforcing cage is inserted the pile body of plain concrete.
Also be used for the construction of non-excavation pipeline.
The invention has the beneficial effects as follows:
1, in bury, need not as existing auger, take the soil body in the hole out of ground by carrying on the sea whelk, and then remove, it utilized in the weak soil can the soil compaction pore-forming characteristic, the cylinder hole that soil compaction forms when carrying brill by the isometrical sea whelk part (being the part of the middle part sea whelk equal diameters of gyro bit) of gyro bit comes pore-forming, since the length of gyro bit only be auger 1/10th or still less, its torsion, resistance reduce greatly; The top of gyro bit is " point " shape, and the resistance that pulls out on it reduces greatly; It is few that bit part carries earth, also just exempted the hardship of clay, silt displacement, and gyro bores and makes auger irrealizable method in clay geology be achieved the pore-forming pile.
2, existing auger drill bit is changed into upper and lower two points, the sea whelk on top is all removed, only stay drilling rod, under the condition of equal power, it is long with stake to add the timber pile footpath greatly.
3, gyro bit creeps into by soil compaction is upper and lower, become the original native pore-forming of carrying and be the soil compaction pore-forming,, only remained drilling rod and drill bit because the quantity of sea whelk significantly reduces (reducing 70 ~ 90%), so the vertical frictional resistance of its torsion and side direction reduces greatly, has reduced power significantly.Power reduces greatly, and institute pile stake footpath, stake is long and pile vertical carrying capacity all bores construction benefit than conventional helical with anti-horizontal thrust and improves greatly, and pore-forming is without sleeve, no mud emission, and cost reduces greatly, and is widely applicable.
Description of drawings
Fig. 1 is the structure chart of gyro bit of the present invention.
Fig. 2 is the composition schematic diagram that has the pile machinery of gyro bit of the present invention.
Fig. 3 is the 1st kind of piling method schematic diagram that has the pile machinery of gyro bit of the present invention.
Fig. 4 is the 2nd kind of piling method schematic diagram that has the pile machinery of gyro bit of the present invention.
Among the figure, 1, pile frame; 2, chassis; 3, mobile system; 4, dynamical system; 5, tube drilling rod; 8, gyro bit; 9, isometrical sea whelk; 10, top sea whelk; 11, bottom sea whelk; 12, annotate the concrete mouth; 13, high pressure injection concrete passage; 14, High pressure cement pump; 15, defeated concrete conduit.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
As shown in Figure 1, gyro bit of the present invention, the sea whelk equal diameters of drill bit mid portion, top sea whelk and bottom sea whelk diameter reduce gradually, form upper and lower two points, and whole drill bit is top in shape.
As shown in Figure 1, 2, the pile machinery that has gyro bit of the present invention, the dynamical system 4, tube drilling rod 5, gyro bit 8 and the high pressure injection concrete system that comprise the chassis 2 that is installed on the mobile system 3, pile frame 1, piling, gyro bit 8 is positioned at the head of drilling rod 5, the sea whelk equal diameters of drill bit mid portion, top sea whelk and bottom sea whelk diameter reduce gradually, form upper and lower two points, and whole drill bit is top in shape.The sea whelk that is gyro bit 8 is by isometrical sea whelk 9, and top sea whelk 10 and bottom sea whelk 11 are formed.The length of isometrical generally speaking sea whelk 9 parts is 1 ~ 2 meter.
High pressure injection concrete system is by concrete pump 14, defeated concrete conduit 15 and annotate concrete mouth 12 and constitute, and defeated concrete conduit 15 inserts tube drilling rods 5, annotates concretes by high pressure injection concrete passage 13 that forms in the tube drilling rod 5 and the notes concrete mouth 12 that is formed on 8 times points of gyro bit.
As shown in Figure 3, have the piling method of the pile machinery of above-mentioned gyro bit, pile in weak soil such as mud, silt clay, silty clay may further comprise the steps successively:
A. at first creep into the gyro rig, after creeping into the arrival projected depth, start concrete pump concrete is pumped into drilling rod core pipe by defeated concrete conduit, inject concrete by annotating in the cylinder hole that forms when the concrete mouth is carried on gyro bit, marginal not is gone into concrete edge and is carried the gyro brill, up to design elevation, the concrete pile body of formin.
B. before concrete initial set, reinforcing cage is inserted the pile body of plain concrete.
Said method also can be used for the construction of non-excavation pipeline.
As shown in Figure 4, have the piling method of the pile machinery of above-mentioned gyro bit, be used for soft hard soil base pile down, may further comprise the steps successively:
A. at first creep into the gyro rig, when bit drills is crossed weak soil arrival hardpan, earlier drill bit is pierced hard formation, after gyro bit all enters hard formation, brill is carried in beginning rotation in the same way, carry to weak soil, oppositely change and bore, pan soil between the isometrical sea whelk of drill bit is bored in the weak soil of all weak soils around clamp-oning by top, and the regolith of depositing between sea whelk is replaced as weak soil, and then is rotated in the forward and continues to creep into after sinking to creeping into the degree of depth that arrived to last time, after below the degree of depth that drill bit all enters last time once more and reaches, carry brill again, circulation repeats above-mentioned steps, until the degree of depth that reaches designing requirement;
B. after replacing the arrival projected depth up and down, start concrete pump concrete is injected in the sharp down hole of gyro brill by infusion concrete conduit and notes concrete mouth, the gyro brill is carried on pumping of concrete limit, limit, by gyro bit soil compaction pore-forming, the limit is carried and is bored marginal not up to design elevation, the concrete pile body of formin.
C. before concrete initial set, reinforcing cage is inserted the pile body of plain concrete.
Said method also can be used for the construction of non-excavation pipeline.
Certainly, the reinforcing cage in above-mentioned two methods inserts the plain concrete step and according to circumstances can omit.
In sum, equipment of the present invention need not be done to carry on the sea whelk as existing spiral drilling machine in bury and take the soil body in the hole out of ground and then removing; It utilized in the weak soil can the soil compaction pore-forming characteristic, the cylinder hole that soil compaction forms when carrying brill by the cylinder (being the part of the middle part sea whelk equal diameters of gyro bit) of drill bit comes pore-forming, since the length of gyro bit only be augers 1/10th or still less, its torsion, resistance reduce greatly; In addition, the top of gyro bit also is " point " shape, and the resistance that pulls out on it reduces greatly; Because to carry earth few for bit part, also just exempted the hardship of the removing of clay, mud, thereby the irrealizable worker's method of auger gyro bores and is able to use in clay geology.
In last soft hard down soil layer, it can creep into the soil in the hard formation earlier on the back with gyro bit and carry, and utilizes forward and reverse rotation that the soil body is replaced, be in the pan soil pore-forming and created condition, improve again and reinforced the top weak soil, also need not efflux earth, mud, economic environmental protection.
In sum, among the embodiment that content of the present invention is not confined to, the knowledgeable people in the same area can propose other embodiment easily within technological guidance's thought of the present invention, but this embodiment comprises within the scope of the present invention.
Claims (3)
1. piling method that has the pile machinery of gyro bit, the sea whelk equal diameters of the drill bit mid portion of described gyro bit, top sea whelk and bottom sea whelk diameter reduce gradually, form upper and lower two points, whole drill bit is top in shape, be used for the soft pile of hard place base down, may further comprise the steps successively:
A. at first creep into the gyro rig, when bit drills is crossed weak soil arrival hardpan, earlier drill bit is pierced hard formation, after gyro bit all enters hard formation, brill is carried in beginning rotation in the same way, carry to weak soil, oppositely change and bore, pan soil between the isometrical sea whelk of drill bit is bored in the weak soil of all weak soils around clamp-oning by top, and the regolith of depositing between sea whelk is replaced as weak soil, and then is rotated in the forward and continues to creep into after sinking to creeping into the degree of depth that arrived to last time, after below the degree of depth that drill bit all enters last time once more and reaches, carry brill again, circulation repeats above-mentioned steps, until the degree of depth that reaches designing requirement;
B. when replace up and down reach projected depth after, the startup concrete pump is injected into concrete in the sharp down hole of gyro brill by defeated concrete conduit and notes concrete mouth, and the gyro brill is carried on pumping of concrete limit, limit, by gyro bit soil compaction pore-forming, the limit is carried and is bored the marginal not concrete up to design elevation, the concrete pile body of formin.
2. the piling method that has the pile machinery of gyro bit according to claim 1 is characterized in that, also be included in concrete initial set before, reinforcing cage is inserted the pile body of plain concrete.
3. the piling method that has the pile machinery of gyro bit according to claim 1 is characterized in that, is used for the construction of the non-excavation pipeline of pan soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710056417XA CN1995689B (en) | 2007-01-08 | 2007-01-08 | Pile forming method of pile forming mechanism with gyro bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710056417XA CN1995689B (en) | 2007-01-08 | 2007-01-08 | Pile forming method of pile forming mechanism with gyro bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1995689A CN1995689A (en) | 2007-07-11 |
| CN1995689B true CN1995689B (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200710056417XA Expired - Fee Related CN1995689B (en) | 2007-01-08 | 2007-01-08 | Pile forming method of pile forming mechanism with gyro bit |
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Families Citing this family (5)
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| AU2017393950B2 (en) | 2017-01-18 | 2022-11-24 | Minex Crc Ltd | Mobile coiled tubing drilling apparatus |
| CN106939595A (en) * | 2017-02-14 | 2017-07-11 | 中建二局第三建筑工程有限公司 | A kind of rotary digging bottom-enlarging filling pile construction technology |
| CN108412502B (en) * | 2018-03-06 | 2019-12-03 | 广西大学 | A kind of deep tunnel passes through upper-soft lower-hard ground construction method |
| CN108643202A (en) * | 2018-05-17 | 2018-10-12 | 广东卓建实业集团有限公司 | Massif prosthetic appliance |
| CN112323779A (en) * | 2019-08-05 | 2021-02-05 | 张继红 | Construction method of long spiral bagged fluid pile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2272940Y (en) * | 1996-06-17 | 1998-01-21 | 何庆林 | Screw driller |
| GB2329204A (en) * | 1997-09-11 | 1999-03-17 | Bicc Plc | Earth auger |
| CN1243193A (en) * | 1998-06-18 | 2000-02-02 | 小井辉夫 | Drilling apparatus for basic foundation |
| CN2540491Y (en) * | 2002-01-29 | 2003-03-19 | 何庆林 | Rotary drilling machine for mould concrete pile |
| CN200999592Y (en) * | 2007-01-08 | 2008-01-02 | 天津雷华科技有限公司 | Gyroscope drill and piling machine with gyroscope drill |
-
2007
- 2007-01-08 CN CN200710056417XA patent/CN1995689B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2272940Y (en) * | 1996-06-17 | 1998-01-21 | 何庆林 | Screw driller |
| GB2329204A (en) * | 1997-09-11 | 1999-03-17 | Bicc Plc | Earth auger |
| CN1243193A (en) * | 1998-06-18 | 2000-02-02 | 小井辉夫 | Drilling apparatus for basic foundation |
| CN2540491Y (en) * | 2002-01-29 | 2003-03-19 | 何庆林 | Rotary drilling machine for mould concrete pile |
| CN200999592Y (en) * | 2007-01-08 | 2008-01-02 | 天津雷华科技有限公司 | Gyroscope drill and piling machine with gyroscope drill |
Non-Patent Citations (3)
| Title |
|---|
| CN 200999592 Y,权利要求1,3. |
| JP特开2005-320806A 2005.11.17 |
| JP特开平9-209673A 1997.08.12 |
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| CN1995689A (en) | 2007-07-11 |
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Granted publication date: 20101208 Termination date: 20130108 |