CN102797254A - Construction method for bottom-expanded pile casting by long-spiral drilling and compacted half soil sampling - Google Patents
Construction method for bottom-expanded pile casting by long-spiral drilling and compacted half soil sampling Download PDFInfo
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- CN102797254A CN102797254A CN2012103317457A CN201210331745A CN102797254A CN 102797254 A CN102797254 A CN 102797254A CN 2012103317457 A CN2012103317457 A CN 2012103317457A CN 201210331745 A CN201210331745 A CN 201210331745A CN 102797254 A CN102797254 A CN 102797254A
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Abstract
The invention relates to a construction method for bottom-expanded pile casting by long-spiral drilling and compacted half soil sampling. The construction method comprises the following steps: adopting a long-spiral drilling machine provided with a special in-rock drilling bit for construction to a preset pole-hole depth; backfilling rock soil discharged by the long-spiral drilling machine into a pole hole, and adopting the long-spiral drilling machine provided with a special in-rock drilling bit for extruded drilling to the preset depth; installing a reamer at the bottom part of a drilling rod by replacement, and putting into the bottom part of the pile hole for reaming construction; after reaming, taking out the long-spiral drilling machine, installing a multifunctional slag removing drum at the bottom part of the drilling rod by replacement, and putting into the pile hole for slag removing construction; after the residual slag at the bottom part of the pile hole is removed completely, opening a concrete output valve at the bottom part of the multifunctional slag removing drum, and concreting into the expanded bottom of the pile hole by a concrete pump; and lifting into a steel bar cage, and vibrating for positioning the steel bar cage by utilizing a vibrator and the self weight of the steel bar cage. The cast hole pile has the advantages of large force bearing area at the pile bottom, high load bearing force for single pile and strong vibration resistance at the bottom part of the single pile.
Description
Technical field
The present invention relates to the job practices of deposited reinforced concrete pile, be specifically related to the compacted bottom-enlarging filling pile job practices that partly fetches earth of a kind of long auger.
Background technology
Is being under the geological condition of bearing stratum with non-basement rock at present, upper load is high-rise greatly, the super highrise building engineering is for guaranteeing to be no more than bearing capacity of foundation soil, and general the employing adds the timber pile footpath, increases pile body length and improve bearing capacity of single pile; But lengthening strengthens the pile body diameter will inevitably cause that concrete amount is huge to be increased, and when pile body length and diameter ratio were excessive, the bearing capacity and the shear resistance of pile body significantly reduced.But operations such as the boring in the bottom-enlarging filling pile work progress at present, the expansion end, perfusion, pile; Need many plant equipment cooperations to accomplish; Its efficiency of construction is lower; Complicated operation, the maintenance cost is higher, so existing bottom-enlarging filling pile job practices and equipment have seriously restricted the development of pile foundation industry.
Summary of the invention
The technical problem that the present invention will solve provides the long auger that a kind of speed of application is fast, bearing capacity is high
The compacted bottom-enlarging filling pile job practices that partly fetches earth.
For solving above technical problem, technical scheme of the present invention is: the compacted bottom-enlarging filling pile job practices that partly fetches earth of a kind of long auger is characterized in that may further comprise the steps:
The 1st step: adopt the extremely predetermined stake hole depth of long-spiral drilling machine construction that special type is gone into the rock drill bit is housed, the back proposes long-spiral drilling machine;
The 2nd step: the ground that long-spiral drilling machine is discharged is backfilling in the hole, goes into the long-spiral drilling machine of rock drill bit and pushes and hole to desired depth with special type is housed once more, and the back proposes long-spiral drilling machine;
The 3rd step: change reamer in the drilling rod bottom, put into a bottom, hole and carry out the reaming construction;
The 4th step: reaming finishes the back and proposes long screw drill rod, changes multi-functional scarfing cinder tube in the drilling rod bottom, puts into a bottom, hole and carries out the scarfing cinder construction;
The 5th step: after stake hole bottom residues is intact clearly, open the concrete output valve of multi-functional scarfing cinder tube bottom, through concrete pump concrete perfusion in the stake pipe;
The 6th step: hang in reinforcing cage, utilize the deadweight of vibrator and reinforcing cage that reinforcing cage is shaken into the location.
Said special type is gone into the rock drill bit structure: comprise two spiral shell Two head drill bits, be symmetrically arranged with cutting teeth and scarfing cinder cutter on the said pair of spiral shell Two head drill bit, said pair of spiral shell Two head drill bit top is provided with apex point.
Said cutting teeth is made up of sub warhead drill bit and base, and said base is welded on the flight, and said sub warhead drill chuck is connected in the base.
Said scarfing cinder cutter is made up of perching knife and support, and said support is welded on the flight, and said perching knife is fixed on the support through latch.
Said apex point is preferably twisted shape.
Said multi-functional scarfing cinder barrel structure is: comprise cylindrical shell; Said cylindrical shell top is provided with the link that is connected with long screw drill rod, and the bottom is provided with the fan-shaped base plate concentric with cylindrical shell, is provided with the steel pipe of band hollow duct in the said cylindrical shell; Said steel pipe lower end is fixedly connected on the fan-shaped base plate; Said fan-shaped base plate bottom is provided with can be around the native plate of the receipts that steel pipe rotates, and said steel pipe bottom is provided with valve, and said fan-shaped base plate is provided with block.
The edge of the native plate of said receipts is provided with the shovel soil plate under being tilted to.
Said valve is made up of two semilune baffle plates, and said semilune baffle plate is provided with the crescent groove, and said baffle plate one end is fixed on the steel pipe bottom through bearing pin, and the other end passes the crescent groove through bearing pin and is limited on the native plate of receipts.
Said fan-shaped base plate is connected through hinge with the cylindrical shell bottom.
This method is applicable to and bankets, mud, silt, clay, sandy soil, cobble and middle weathering isolith layer and all kinds of building foundation pile, when the construction of phreatic stratum is arranged, need not place punching block casing and mud off; Can accomplish underwater grouting by a machine; Need fetch earth hardly non-full closing in the soil property layer, the pile amount of fetching earth is merely about 70% of traditional handicraft in saturated soil property layer, and is compacted through secondary drilling; The compactness of stake Zhou Tuzhi, the collateral resistance of pile body are largely increased; Stake footpath generally can reach 600～1000mm, stake is long reach 30 meters dark in, the bellout diameter maximum can reach 1600mm.
The used drill bit of this method is that improved special type is gone into the rock drill bit on the conventional drill basis; It utilizes the torsion and the pressure of full screw earth auger; Make on the drill bit cutting teeth to geological formations cut, fragmentation; Scarfing cinder cutter on the drill bit is cleared up broken dregs, outside last flight by full screw earth auger portals unnecessary dregs clearly, has effectively solved drill bit and has gone into rock and prevent the pile foundation settlement problem.
The used scarfing cinder tube of this method is useful on the steel pipe of the band hollow duct of fluid concrete in former scarfing cinder tube set inside; The hollow duct of itself and long screw drill rod is connected; Simultaneously the concrete outlet valve is arranged in scarfing cinder tube steel pipe bottom design; Concrete outlet is closed automatically when long screw drill rod clockwise rotates, and the scarfing cinder tube carries out the scarfing cinder operation through shoveling native plate, and concrete outlet is opened and carried out concrete perfusion operation when long screw drill rod rotates counterclockwise; Effectively having solved the scarfing cinder tube can only scarfing cinder, technical barrier that can not concrete perfusion.
The present invention has that the incomparable technology of other machine drilling stake, hand excavated pile is advanced, easy and simple to handle, applied range, pile-forming speed are fast, expand the end effective, not the spoil disposal slurry, do not need a pneumatolytic stake after retaining wall, a machine operation, the scarfing cinder, mechanization degree is high, safe and reliable and the advantages such as bearing capacity that significantly reduce construction costs, significantly improve; Boring, the expansion end, perfusion, the operation of pile monommechanization of pile foundation have been realized; Solve this difficult problem that always perplexs the pile foundation industry for a long time, filled up a blank of China's pile foundation industry.
Description of drawings
Fig. 1 is construction sequence figure of the present invention;
Fig. 2 is that special type of the present invention is gone into rock drill bit sketch map;
Fig. 3 is the multi-functional scarfing cinder tube of a present invention front view;
Fig. 4 is the multi-functional scarfing cinder tube of the present invention upward view when carrying out the scarfing cinder operation;
Fig. 5 is the multi-functional scarfing cinder tube of the present invention upward view when carrying out the concrete spouting operation;
1, apex point, 2, two spiral shell Two head drill bit, 3, cutting teeth, 4, the scarfing cinder cutter, 5, the sub warhead drill bit, 6, base, 7, perching knife, 8, support.9, cylindrical shell, 10, link, 11, fan-shaped base plate, 12, receive native plate, 13, valve, 14, steel pipe, 15, hinge, 16, block, 17, shovel native plate, 18, bearing pin, 19, bearing pin, 20, hollow duct, 21, baffle plate, 22, the crescent groove.
The specific embodiment
Planting the compacted bottom-enlarging filling pile job practices that partly fetches earth of long auger may further comprise the steps:
The 1st step: adopt the extremely predetermined stake hole depth of long-spiral drilling machine construction that special type is gone into the rock drill bit is housed, the back proposes long-spiral drilling machine;
The 2nd step: the ground that long-spiral drilling machine is discharged is backfilling in the hole, goes into the long-spiral drilling machine of rock drill bit and pushes and hole to desired depth with special type is housed once more, and the back proposes long-spiral drilling machine;
The 3rd step: change reamer in the drilling rod bottom, put into a bottom, hole and carry out the reaming construction;
The 4th step: reaming finishes the back and proposes long-spiral drilling machine, changes multi-functional scarfing cinder tube in the drilling rod bottom, puts into a bottom, hole and carries out the scarfing cinder construction;
The 5th step: after stake hole bottom residues is intact clearly, open the concrete output valve of multi-functional scarfing cinder tube bottom, the limit promotes drilling rod, and the limit is through concrete pump concrete perfusion in the end is expanded in the stake hole;
The 6th step: hang in reinforcing cage, utilize the deadweight of vibrator and reinforcing cage that reinforcing cage is shaken into the location.
Shown in accompanying drawing 1, detailed construction step of the present invention is following:
Position, smooth place → stake setting-out → mounting equipment → auger is in place → drilling to completion stops to creep into → promotes surplus soil → extruding boring → lifting drilling rod that drilling rod → backfill gets out in the stake hole pull down augers → change reamer → utilize drilling rod and deliver to the hole to reamer at the bottom of → the unlatching rig; Expanding undercutting cuts; Reach designing requirement shutdown → lifting drilling rod → pull down reamer and change at the bottom of the scarfing cinder tube cleaning eye dregs → pumping of concrete to design elevation → utilization stake machine autogamy hoisting device sling reinforcing cage, vibrator, reinforcing cage is shaken in the concrete → pile → pile crown processing → stake top safeguard measure.
Shown in accompanying drawing 2; Special type is gone into the rock drill bit structure, comprises screwed long screw drill rod and two spiral shell Two head drill bits 2, and said pair of spiral shell Two head drill bit 2 is provided with the cutting teeth 3 and scarfing cinder cutter 4 of two symmetries; The top is provided with twisted shape apex point 1; Said cutting teeth 3 is made up of sub warhead drill bit 5 and base 6, and said a plurality of bases 6 are welded on the flight side by side, and said sub warhead drill bit 5 is connected in the base 6 and can rotates freely; Said scarfing cinder cutter 4 is made up of perching knife 7 and support 8, and said support 8 is welded on the flight, and said perching knife 7 is fixed on the support 8 through latch, and quantity and length size, the position of said sub warhead drill bit 5 and perching knife 7 can be adjusted according to the size of boring aperture.
Shown in accompanying drawing 3; Multi-functional scarfing cinder barrel structure does, comprises cylindrical shell 9, and said cylindrical shell 9 tops are provided with the positioning element 10 that is connected with long screw drill rod; The bottom is connected with the fan-shaped base plate 11 concentric with cylindrical shell 9 through hinge 15; Be provided with the steel pipe 14 of band hollow duct 20 in the said cylindrical shell 9, its upper end is fixedly connected on the positioning element 10, and its lower end is fixedly connected on the fan-shaped base plate 11; Said fan-shaped base plate 11 bottoms are provided with can be around the receipts soil plate 12 of steel pipe 14 rotations, and said steel pipe 14 bottoms are provided with concrete outlet valve 13.
Shown in accompanying drawing 4; The edge of the native plate 12 of said receipts is provided with the shovel soil plate 17 under being tilted to; Said valve 13 is made up of two semilune baffle plates 21, and an end of said baffle plate 21 is fixed on central axis 14 bottoms through bearing pin 18, and the other end passes crescent groove 22 through bearing pin 19 and is limited on the native plate 12 of receipts; Two semilune baffle plates 21 are rotated clockwise to closure state when long screw drill rod clockwise rotates; Concrete outlet valve 13 is closed, and receives native plate 12 simultaneously and is rotated clockwise to the position of block 16 around steel pipe 14, shovels native plate 17 and begins to carry out the scarfing cinder operation.
Shown in accompanying drawing 5; When long screw drill rod rotates counterclockwise; Receive native plate 12 and be rotated counterclockwise the closed state with fan-shaped base plate 11 thereupon; Two semilune baffle plates 21 are along with bearing pin 19 in the crescent groove 22 is rotated counterclockwise with receiving native plate 12 synchronously simultaneously, and concrete outlet valve 13 is opened, and begins to carry out concrete perfusion operation.
The geological formations in the most of provinces of central China such as this method is applicable to and bankets, mud, silt, clay, sandy soil, cobble, middle weathering and gentle breezeization, city will have been made huge contribution for the express delivery development of pile foundation industry.
The above is merely the preferable specific embodiment of the present invention, but protection domain of the present invention is not limited thereto, and is equal to replacement or changes according to technical scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (9)
1. compacted bottom-enlarging filling pile job practices that partly fetches earth of long auger is characterized in that may further comprise the steps:
The 1st step: adopt the extremely predetermined stake hole depth of long-spiral drilling machine construction that special type is gone into the rock drill bit is housed, the back proposes long-spiral drilling machine;
The 2nd step: the ground that long-spiral drilling machine is discharged is backfilling in the hole, goes into the long-spiral drilling machine of rock drill bit and pushes and hole to desired depth with special type is housed once more, and the back proposes long-spiral drilling machine;
The 3rd step: change reamer in the drilling rod bottom, put into a bottom, hole and carry out the reaming construction;
The 4th step: reaming finishes the back and proposes long screw drill rod, changes multi-functional scarfing cinder tube in the drilling rod bottom, puts into a bottom, hole and carries out the scarfing cinder construction;
The 5th step: after stake hole bottom residues is intact clearly, open the concrete output valve of multi-functional scarfing cinder tube bottom, drilling rod is carried on the limit, and the limit is through concrete pump concrete perfusion in the end is expanded in the stake hole;
The 6th step: hang in reinforcing cage, utilize the deadweight of vibrator and reinforcing cage that reinforcing cage is shaken into the location.
2. job practices according to claim 1; It is characterized in that: said special type is gone into the rock drill bit structure and is: comprise two spiral shell Two head drill bits (2); Be symmetrically arranged with cutting teeth (3) and scarfing cinder cutter (4) on the said pair of spiral shell Two head drill bit (2), said pair of spiral shell Two head drill bit (2) top is provided with apex point (1).
3. job practices according to claim 2 is characterized in that: said cutting teeth (3) is made up of sub warhead drill bit (5) and base (6), and said base (6) is welded on the flight, and said sub warhead drill bit (5) is connected in the base (6).
4. job practices according to claim 2 is characterized in that: said scarfing cinder cutter (4) is made up of perching knife (7) and support (8), and said support (8) is welded on the flight, and said perching knife (7) is fixed on the support (8) through latch.
5. job practices according to claim 2 is characterized in that: said apex point (1) is preferably twisted shape.
6. job practices according to claim 1; It is characterized in that: said multi-functional scarfing cinder barrel structure is: comprise cylindrical shell (9); Said cylindrical shell (9) top is provided with the link (10) that is connected with long screw drill rod; The bottom is provided with the fan-shaped base plate (11) concentric with cylindrical shell (9); Be provided with the steel pipe (14) of band hollow duct (20) in the said cylindrical shell (9), said steel pipe (14) lower end is fixedly connected on the fan-shaped base plate (11), and said fan-shaped base plate (11) bottom is provided with can be around the receipts soil plate (12) of steel pipe (14) rotation; Said steel pipe (14) bottom is provided with valve (13), and said fan-shaped base plate (11) is provided with block (16).
7. job practices according to claim 6 is characterized in that: the edge of the native plate of said receipts (12) is provided with the shovel soil plate (17) under being tilted to.
8. job practices according to claim 6; It is characterized in that: said valve (13) is made up of two semilune baffle plates (21); Said semilune baffle plate (21) is provided with crescent groove (22); Said baffle plate (21) one ends are fixed on steel pipe (14) bottom through bearing pin (18), and the other end passes crescent groove (22) through bearing pin (19) and is limited on the native plates of receipts (12).
9. job practices according to claim 6 is characterized in that: said fan-shaped base plate (11) is connected through hinge (15) with cylindrical shell (9) bottom.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210331745.7A CN102797254B (en) | 2012-09-10 | 2012-09-10 | Construction method for bottom-expanded pile casting by long-spiral drilling and compacted half soil sampling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210331745.7A CN102797254B (en) | 2012-09-10 | 2012-09-10 | Construction method for bottom-expanded pile casting by long-spiral drilling and compacted half soil sampling |
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| CN102797254A true CN102797254A (en) | 2012-11-28 |
| CN102797254B CN102797254B (en) | 2014-08-06 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103419285A (en) * | 2013-08-01 | 2013-12-04 | 鲍林富 | Processing method of hollow stone container |
| CN103526746A (en) * | 2013-09-30 | 2014-01-22 | 王志耸 | Full-thread pile pouring machine extruding soil body and pile-forming construction method thereof |
| CN106677166A (en) * | 2016-12-21 | 2017-05-17 | 江苏省岩土工程公司 | Flow construction method for forming cast-in-place bored pile for gravel-decomposed rock stratum in double-machine combined mode |
| CN109236191A (en) * | 2018-11-06 | 2019-01-18 | 中铁六局集团有限公司 | Long spire modified drilling pouring pile hole construction method |
| CN114182721A (en) * | 2021-12-22 | 2022-03-15 | 新疆路桥建设集团有限公司 | Construction method for bearing casing bored pile and pouring pile of raft at collapsible loess section |
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| US3823562A (en) * | 1971-10-26 | 1974-07-16 | Vyzk Ustav Inzinierskych Stavi | Process of production of piles, pile packs, and subterranean pile walls |
| US5158147A (en) * | 1991-08-09 | 1992-10-27 | Mobile Drilling Company, Inc. | Auger cutter head |
| CN201771429U (en) * | 2010-08-24 | 2011-03-23 | 深圳市利赛实业发展有限公司 | Spiral drill bit |
| CN102011555A (en) * | 2010-09-07 | 2011-04-13 | 李新桥 | Double-cone and double-helix drill bit for rotary drilling rig |
| CN102628266A (en) * | 2011-12-30 | 2012-08-08 | 中铁二局股份有限公司 | Construction method of long spiral cast-in-situ bored pile |
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2012
- 2012-09-10 CN CN201210331745.7A patent/CN102797254B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3823562A (en) * | 1971-10-26 | 1974-07-16 | Vyzk Ustav Inzinierskych Stavi | Process of production of piles, pile packs, and subterranean pile walls |
| US5158147A (en) * | 1991-08-09 | 1992-10-27 | Mobile Drilling Company, Inc. | Auger cutter head |
| CN201771429U (en) * | 2010-08-24 | 2011-03-23 | 深圳市利赛实业发展有限公司 | Spiral drill bit |
| CN102011555A (en) * | 2010-09-07 | 2011-04-13 | 李新桥 | Double-cone and double-helix drill bit for rotary drilling rig |
| CN102628266A (en) * | 2011-12-30 | 2012-08-08 | 中铁二局股份有限公司 | Construction method of long spiral cast-in-situ bored pile |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103419285A (en) * | 2013-08-01 | 2013-12-04 | 鲍林富 | Processing method of hollow stone container |
| CN103526746A (en) * | 2013-09-30 | 2014-01-22 | 王志耸 | Full-thread pile pouring machine extruding soil body and pile-forming construction method thereof |
| CN106677166A (en) * | 2016-12-21 | 2017-05-17 | 江苏省岩土工程公司 | Flow construction method for forming cast-in-place bored pile for gravel-decomposed rock stratum in double-machine combined mode |
| CN109236191A (en) * | 2018-11-06 | 2019-01-18 | 中铁六局集团有限公司 | Long spire modified drilling pouring pile hole construction method |
| CN109236191B (en) * | 2018-11-06 | 2019-11-12 | 中铁六局集团有限公司 | Long spire modified drilling pouring pile hole construction method |
| CN114182721A (en) * | 2021-12-22 | 2022-03-15 | 新疆路桥建设集团有限公司 | Construction method for bearing casing bored pile and pouring pile of raft at collapsible loess section |
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| CN102797254B (en) | 2014-08-06 |
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Effective date of registration: 20170120 Address after: 333000 Jiangxi Province, Jingdezhen City Changjiang district fish Li Industrial Park, No. fifteenth Patentee after: JIANGXI HUANQIU GEOTECHNICAL TECHNOLOGY Co.,Ltd. Address before: 333000 Shangri-La City, Jiangxi Province, North Plaza Road, building, 25 Patentee before: Ma Chungen |
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Effective date of registration: 20200701 Address after: 333000 Jingdezhen high tech Zone Industrial Park (within Jingdezhen Jingxia cement components Co., Ltd.) Patentee after: Jiangxi Xinfeng Foundation Engineering Co.,Ltd. Address before: 333000 Jiangxi Province, Jingdezhen City Changjiang district fish Li Industrial Park, No. fifteenth Patentee before: JIANGXI HUANQIU GEOTECHNICAL TECHNOLOGY Co.,Ltd. |
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Denomination of invention: A Construction Method of Long Spiral Drilling Compaction Semi Borrowing Enlarged Bottom Grouting Pile Effective date of registration: 20221109 Granted publication date: 20140806 Pledgee: Jingdezhen SME Financing Guarantee Co.,Ltd. Pledgor: Jiangxi Xinfeng Foundation Engineering Co.,Ltd. Registration number: Y2022980021480 |
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