CN102995632A - Cast-in-situ bored pile technique - Google Patents
Cast-in-situ bored pile technique Download PDFInfo
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- CN102995632A CN102995632A CN2012104755891A CN201210475589A CN102995632A CN 102995632 A CN102995632 A CN 102995632A CN 2012104755891 A CN2012104755891 A CN 2012104755891A CN 201210475589 A CN201210475589 A CN 201210475589A CN 102995632 A CN102995632 A CN 102995632A
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Abstract
The invention relates to the technical field of foundation treatment and in particular relates to a cast-in-situ bored pile technique. The cast-in-situ bored pile technique comprises the following steps of: firstly, releasing a point at a pile position; secondly, placing a drilling machine in position; thirdly, repairing the point at the pile position; fourthly, mounting a pile casing and making holes; fifthly, cleaning the holes for the first time; sixthly, placing a reinforcement cage and a concrete guide pipe; seventhly, cleaning the holes for the second time; eighthly, casting and compacting concrete; ninthly, removing the guide pipe; tenthly, teeming concrete; and eleventhly, protecting a pile top. The cast-in-situ bored pile technique provided by the invention can carry out the foundation treatment in a limited space below a loading shed, pile body concrete quality and bearing capacity requirements of a bored pile can be met, and stability and safety of the ground below the loading shed are guaranteed. The cast-in-situ bored pile technique provided by the invention overcomes the defect that the existing foundation treatment method is difficult to realize a foundation treatment target in the limited space below the loading shed.
Description
Technical field:
The present invention relates to a kind of foundation treatment technology field, particularly a kind of drilling hole bored concrete pile technology.
Background technology:
Because the many oil depot geological conditionss of middle mountain people are weak, the large tracts of land sedimentation appears in the driving place of not carrying out the ground processing under the entrucking canopy, need to carry out ground to it and process.Owing to be subjected to the restriction of clear height (5.8 meters) in the canopy, and each installation of oiling island equipment, large-scale pile machine equipment can not enter, since the ground mud average 23 meters dark, adopting the normal boring of geological drilling rig is to reach construction requirement, the mud internal drilling can cause that shrinkage cavity appears in hole, the hole etc. of collapsing, thereby existing method for processing foundation all is difficult to realize in the confined space ground processing target under the entrucking canopy.
Summary of the invention:
The technical problem to be solved in the present invention provides a kind of drilling hole bored concrete pile technology, and this technology has realized ground processing in the confined space under the entrucking canopy, satisfies drilled pile pile body concrete quality and requirement for bearing capacity, guarantees stability and the safety on ground under the entrucking canopy.Overcome existing method for processing foundation all is difficult to realize in the confined space ground processing target under the entrucking canopy deficiency.
The technical solution used in the present invention is: a kind of drilling hole bored concrete pile technology, and this technical step is as follows:
One, put some the stake position: can directly emit all piles heart coordinate with total powerstation according to stake position coordinate, stamp timber, can go on foot construction once after checking;
Two, auger is in place: rig adopts geological drilling rig, when rig is in place, must held stationary, and not run-off the straight, displacement, rig should first test-run a machine in place before, and is in place again after the assurance machine can work;
Three, stake position complex point: before beginning boring after rig is in place, should check again a site, guarantee the stake position accurately;
Four, casing setting and pore-forming: pore forming process adopts full cylinder-wall protecting, and the casing specification is ф 426 * 7, long 4 meters of every joint, employing is tied up the weldering mode and is overlapped, for guaranteeing the smooth closely knit of equipment construction platform, should first smooth building-site before the construction, and according to the suitable drill bit of field requirement employing; Full casing drilling construction sequentially is: creep into to desired depth (1), (2) creep in the casing to desired depth, (3) arrange casing, and casing is compressed into to casing about 30cm above ground level position, repeat (1), (2), (3) step until the design hole depth, pore-forming is finished;
Five, for the first time clear hole: after being bored into projected depth, reply hole depth, position, hole, hole shape, aperture etc. check, utilize slush pump and conduit that natural mud is injected in the aperture, repeatedly flushing, at last to cleaning sediment at the bottom of the hole, and utilize air compressor machine to enter air toward the hole rising pouring, utilize it in the hole and mud mixes the hydraulic pressure that produces, sand setting and sediment are developed simultaneously, and sediment thickness must not surpass 50mm at the bottom of the hole, whole hole;
Six, reinforcing cage and tremie are placed: after the reinforcing cage sectional making is finished, because this engineering the drilling stake aperture is little, stake footpath 400mm, long 46～the 48m of stake, reinforcing cage carries out the merogenesis lifting, and the aperture spreading requires 5% of its verticality allowable variation stake footpath when reinforcing cage is laid, reinforcing cage all at the bottom of the hole after, descend again the concrete steel conduit; DN125 concrete steel conduit adopts screwed connection, can carry pipe in order to guarantee conduit after casting and compacting of concrete is finished, and in the end a joint catheter tail is connected on the suspension ring wire rope in the lower hand-hole with U-shaped suspension ring of reinforcing bar welding;
Seven, clear hole for the second time: after reinforcing cage and conduit are lowered to, namely carry out clear hole second time, require clear Kong Zhikong at the bottom of sediment be not more than 50mm, clear hole to mud balance only reaches designing requirement;
Eight, casting and compacting of concrete: before concreting, steel conduit is connected on the ground pump, utilize pressure that the ground pump provides with concrete endlessly at the bottom of the displacement pile, in perfusion concrete process, the perfusion Underwater Concrete will carry out continuously, must not interrupt, and guarantees the concrete piles quality, until slurry is returned in the aperture, to guarantee the concrete piles quality;
Nine, unload conduit: the aperture stops concreting after returning out concrete, and with the tremie proposition of vibrating, the segmentation dismounting conduit while carrying until only surplus final section conduit ends, is finished rear tube such as casting and compacting of concrete and can't be extracted, and then conduit is stayed in the stake;
Ten, teeming concrete: conduit should in time carry out teeming to the hole inner concrete when only being discharged to surplus final section, and the concrete supplementary irrigation annotates that should to exceed design stake top mark high 0.80 meter, to guarantee pile crown concrete quality, dismounting final section conduit after teeming is finished;
11, stake top protection: after concreting is finished, note the protection of stake top.
The invention has the beneficial effects as follows: bored pile equipment of the present invention is little, thereby it is relatively simple to have technique, and construction is not subjected to the advantage of place restriction, and rig is to existing equipment and Building Influence are little on every side during construction; Because adopted the steel casing of ф 426 * 7, thereby can guarantee stake footpath size, hole quality is guaranteed in do not collapse hole, not shrinkage cavity; Since adopt slush pump and portable air compressor to be used, can be effectively clean the cleaning of inner hole deposition slag, reach the condition of building; Owing to adopt the concreting conduit of DN125, thereby at the bottom of can be endlessly the C30 underwater concrete being sent into the hole, make concrete piles quality molding effect good; The present invention has reached the ground processing target, has shortened the construction period, has increased economic benefit.
The specific embodiment:
Because bored pile operation under the entrucking canopy, the entrucking canopy is 5.8 meters apart from ground level, can not guarantee the required whole height requirement of construction machinery lifting casing (every joint 3-4 rice), so ground integral body under the entrucking canopy is down dug dark 1.4 meters, guarantee that geological drilling rig is in place to the stake position.
The step of drilling hole bored concrete pile technology is as follows:
One, put some the stake position: can directly emit all piles heart coordinate with total powerstation according to stake position coordinate, stamp timber, can go on foot construction once after checking;
Two, auger is in place: rig adopts geological drilling rig, when rig is in place, must held stationary, and not run-off the straight, displacement, rig should first test-run a machine in place before, and is in place again after the assurance machine can work;
Three, stake position complex point: before beginning boring after rig is in place, should check again a site, guarantee the stake position accurately;
Four, casing setting and pore-forming: pore forming process adopts full cylinder-wall protecting, and the casing specification is ф 426 * 7, long 4 meters of every joint, employing is tied up the weldering mode and is overlapped, for guaranteeing the smooth closely knit of equipment construction platform, should first smooth building-site before the construction, and according to the suitable drill bit of field requirement employing; Full casing drilling construction sequentially is: creep into to desired depth (1), (2) creep in the casing to desired depth, (3) arrange casing, and casing is compressed into to casing about 30cm above ground level position, repeat (1), (2), (3) step until the design hole depth, pore-forming is finished;
Five, for the first time clear hole: after being bored into projected depth, reply hole depth, position, hole, hole shape, aperture etc. check, utilize slush pump and conduit that natural mud is injected in the aperture, repeatedly flushing, at last to cleaning sediment at the bottom of the hole, and utilize air compressor machine to enter air toward the hole rising pouring, utilize it in the hole and mud mixes the hydraulic pressure that produces, sand setting and sediment are developed simultaneously, and sediment thickness must not surpass 50mm at the bottom of the hole, whole hole;
Six, reinforcing cage and tremie are placed: after the reinforcing cage sectional making is finished, because this engineering the drilling stake aperture is little, stake footpath 400mm, long 46～the 48m of stake, reinforcing cage carries out the merogenesis lifting, and the aperture spreading requires 5% of its verticality allowable variation stake footpath when reinforcing cage is laid, reinforcing cage all at the bottom of the hole after, descend again the concrete steel conduit; DN125 concrete steel conduit adopts screwed connection, can carry pipe in order to guarantee conduit after casting and compacting of concrete is finished, and in the end a joint catheter tail is connected on the suspension ring wire rope in the lower hand-hole with U-shaped suspension ring of reinforcing bar welding;
Seven, clear hole for the second time: after reinforcing cage and conduit are lowered to, namely carry out clear hole second time, require clear Kong Zhikong at the bottom of sediment be not more than 50mm, clear hole to mud balance only reaches designing requirement;
Eight, casting and compacting of concrete: because this engineering pile is longer, routinely the method for smashing of watering is difficult to assurance concrete piles compactness during concreting, the quality problems such as broken pile, undergauge, folder mud and honeycomb structure also may occur.Before concreting, steel conduit is connected on the ground pump, utilize pressure that the ground pump provides with concrete endlessly at the bottom of the displacement pile, in perfusion concrete process, the perfusion Underwater Concrete will carry out continuously, must not interrupt, guarantee the concrete piles quality, until slurry is returned in the aperture, to guarantee the concrete piles quality;
Nine, unload conduit: the aperture stops concreting after returning out concrete, and with the tremie proposition of vibrating, the segmentation dismounting conduit while carrying until only surplus final section conduit ends, is finished rear tube such as casting and compacting of concrete and can't be extracted, and then conduit is stayed in the stake;
Ten, teeming concrete: conduit should in time carry out teeming to the hole inner concrete when only being discharged to surplus final section, and the concrete supplementary irrigation annotates that should to exceed design stake top mark high 0.80 meter, to guarantee pile crown concrete quality, dismounting final section conduit after teeming is finished;
11, stake top protection: after concreting is finished, note the protection of stake top.
Be understandable that, more than about specific descriptions of the present invention, only for the present invention being described and being not to be subject to the described technical scheme of the embodiment of the invention, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the present invention, to reach identical technique effect; Use needs as long as satisfy, all within protection scope of the present invention.
Claims (1)
1. drilling hole bored concrete pile technology, it is characterized in that: this technical step is as follows:
One, put some the stake position: can directly emit all piles heart coordinate with total powerstation according to stake position coordinate, stamp timber, can go on foot construction once after checking;
Two, auger is in place: rig adopts geological drilling rig, when rig is in place, must held stationary, and not run-off the straight, displacement, rig should first test-run a machine in place before, and is in place again after the assurance machine can work;
Three, stake position complex point: before beginning boring after rig is in place, should check again a site, guarantee the stake position accurately;
Four, casing setting and pore-forming: pore forming process adopts full cylinder-wall protecting, and the casing specification is ф 426 * 7, long 4 meters of every joint, employing is tied up the weldering mode and is overlapped, for guaranteeing the smooth closely knit of equipment construction platform, should first smooth building-site before the construction, and according to the suitable drill bit of field requirement employing; Full casing drilling construction sequentially is: creep into to desired depth (1), (2) creep in the casing to desired depth, (3) arrange casing, and casing is compressed into to casing about 30cm above ground level position, repeat (1), (2), (3) step until the design hole depth, pore-forming is finished;
Five, for the first time clear hole: after being bored into projected depth, reply hole depth, position, hole, hole shape, aperture etc. check, utilize slush pump and conduit that natural mud is injected in the aperture, repeatedly flushing, at last to cleaning sediment at the bottom of the hole, and utilize air compressor machine to enter air toward the hole rising pouring, utilize it in the hole and mud mixes the hydraulic pressure that produces, sand setting and sediment are developed simultaneously, and sediment thickness must not surpass 50mm at the bottom of the hole, whole hole;
Six, reinforcing cage and tremie are placed: after the reinforcing cage sectional making is finished, because this engineering the drilling stake aperture is little, stake footpath 400mm, long 46～the 48m of stake, reinforcing cage carries out the merogenesis lifting, and the aperture spreading requires 5% of its verticality allowable variation stake footpath when reinforcing cage is laid, reinforcing cage all at the bottom of the hole after, descend again the concrete steel conduit; DN125 concrete steel conduit adopts screwed connection, can carry pipe in order to guarantee conduit after casting and compacting of concrete is finished, and in the end a joint catheter tail is connected on the suspension ring wire rope in the lower hand-hole with U-shaped suspension ring of reinforcing bar welding;
Seven, clear hole for the second time: after reinforcing cage and conduit are lowered to, namely carry out clear hole second time, require clear Kong Zhikong at the bottom of sediment be not more than 50mm, clear hole to mud balance only reaches designing requirement;
Eight, casting and compacting of concrete: before concreting, steel conduit is connected on the ground pump, utilize pressure that the ground pump provides with concrete endlessly at the bottom of the displacement pile, in perfusion concrete process, the perfusion Underwater Concrete will carry out continuously, must not interrupt, and guarantees the concrete piles quality, until slurry is returned in the aperture, to guarantee the concrete piles quality;
Nine, unload conduit: the aperture stops concreting after returning out concrete, and with the tremie proposition of vibrating, the segmentation dismounting conduit while carrying until only surplus final section conduit ends, is finished rear tube such as casting and compacting of concrete and can't be extracted, and then conduit is stayed in the stake;
Ten, teeming concrete: conduit should in time carry out teeming to the hole inner concrete when only being discharged to surplus final section, and the concrete supplementary irrigation annotates that should to exceed design stake top mark high 0.80 meter, to guarantee pile crown concrete quality, dismounting final section conduit after teeming is finished;
11, stake top protection: after concreting is finished, note the protection of stake top.
Priority Applications (1)
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| CN2012104755891A CN102995632A (en) | 2012-11-21 | 2012-11-21 | Cast-in-situ bored pile technique |
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| CN2012104755891A CN102995632A (en) | 2012-11-21 | 2012-11-21 | Cast-in-situ bored pile technique |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510513A (en) * | 2013-10-16 | 2014-01-15 | 中铁十九局集团有限公司 | Cast-in-situ bored pile pile-foundation combination pile casing for percussion drilling tool |
| CN103615001A (en) * | 2013-11-27 | 2014-03-05 | 宁波盛宏建设工程有限公司 | Bored pile construction method for reinforcing cage framework layered installation |
| CN103711119A (en) * | 2013-12-18 | 2014-04-09 | 中铁大桥局集团第四工程有限公司 | Drilled-pile mud pneumatic anti-settling circulatory system and application method thereof |
| CN104153352A (en) * | 2014-07-31 | 2014-11-19 | 广西科技大学 | Karst geology rotary-drilling bored concrete pile hole forming process |
| CN104612134A (en) * | 2014-12-16 | 2015-05-13 | 中铁建大桥工程局集团第五工程有限公司 | Cast-in place pile post-grouting construction method for pouring construction |
| CN106087995A (en) * | 2016-06-08 | 2016-11-09 | 深圳市宏业基基础工程有限公司 | The method of stake is built in a kind of boring |
| CN106351575A (en) * | 2016-11-07 | 2017-01-25 | 赵宽学 | Hole-protecting and pile-drilling method |
| CN106759288A (en) * | 2016-11-29 | 2017-05-31 | 昆山顶牛市政建设有限公司 | One kind building bored pile construction method |
| 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 |
| CN107524142A (en) * | 2017-09-20 | 2017-12-29 | 中国二十冶集团有限公司 | A kind of holing with slurry wall protection cast-in-place pile construction method |
| CN107653878A (en) * | 2016-07-23 | 2018-02-02 | 安吉正源塑木装饰材料有限公司 | Cast-in-situ bored pile is reusable to be longitudinally separated formula steel pile casting construction |
| CN108166483A (en) * | 2017-12-31 | 2018-06-15 | 中铁十九局集团第二工程有限公司 | Bored pile construction method |
| CN108797569A (en) * | 2018-06-26 | 2018-11-13 | 江苏地基工程有限公司 | A kind of control method that drilled pile novel energy-conserving pile crown is superfilled |
| CN110004992A (en) * | 2019-04-19 | 2019-07-12 | 贵州省交通规划勘察设计研究院股份有限公司 | It is a kind of can real-time monitoring bored pile construction device and its application method |
| CN110016911A (en) * | 2019-05-05 | 2019-07-16 | 中国建筑一局(集团)有限公司 | A kind of depth casing mechanical hole building bore forming technique |
| CN111851562A (en) * | 2020-07-22 | 2020-10-30 | 重庆交通建设(集团)有限责任公司 | Movable cast-in-situ bored pile construction platform and method |
| CN112144512A (en) * | 2020-09-11 | 2020-12-29 | 中建六局水利水电建设集团有限公司 | Construction method of concrete cast-in-place pile |
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| JP2011137318A (en) * | 2009-12-28 | 2011-07-14 | Daiho Constr Co Ltd | Construction method and apparatus for cast-in-place pile |
| CN102720186A (en) * | 2012-07-10 | 2012-10-10 | 上海港务工程公司 | Underwater once pouring method for variable cross-section bored cast-in-place pile |
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| JP4327638B2 (en) * | 2004-03-26 | 2009-09-09 | 株式会社奥村組 | Construction method of cast-in-place concrete pile |
| CN101638891A (en) * | 2009-08-18 | 2010-02-03 | 上海市第二建筑有限公司 | Construction method of all casing precessing isolation pile |
| JP2011137318A (en) * | 2009-12-28 | 2011-07-14 | Daiho Constr Co Ltd | Construction method and apparatus for cast-in-place pile |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510513A (en) * | 2013-10-16 | 2014-01-15 | 中铁十九局集团有限公司 | Cast-in-situ bored pile pile-foundation combination pile casing for percussion drilling tool |
| CN103615001A (en) * | 2013-11-27 | 2014-03-05 | 宁波盛宏建设工程有限公司 | Bored pile construction method for reinforcing cage framework layered installation |
| CN103711119A (en) * | 2013-12-18 | 2014-04-09 | 中铁大桥局集团第四工程有限公司 | Drilled-pile mud pneumatic anti-settling circulatory system and application method thereof |
| CN103711119B (en) * | 2013-12-18 | 2015-10-28 | 中铁大桥局集团第四工程有限公司 | A kind of pneumatic anti-settling circulating system of drilled pile mud and using method |
| CN104153352A (en) * | 2014-07-31 | 2014-11-19 | 广西科技大学 | Karst geology rotary-drilling bored concrete pile hole forming process |
| CN104612134A (en) * | 2014-12-16 | 2015-05-13 | 中铁建大桥工程局集团第五工程有限公司 | Cast-in place pile post-grouting construction method for pouring construction |
| CN106087995A (en) * | 2016-06-08 | 2016-11-09 | 深圳市宏业基基础工程有限公司 | The method of stake is built in a kind of boring |
| CN107653878A (en) * | 2016-07-23 | 2018-02-02 | 安吉正源塑木装饰材料有限公司 | Cast-in-situ bored pile is reusable to be longitudinally separated formula steel pile casting construction |
| CN106351575A (en) * | 2016-11-07 | 2017-01-25 | 赵宽学 | Hole-protecting and pile-drilling method |
| CN106759288A (en) * | 2016-11-29 | 2017-05-31 | 昆山顶牛市政建设有限公司 | One kind building bored pile construction method |
| 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 |
| CN107524142A (en) * | 2017-09-20 | 2017-12-29 | 中国二十冶集团有限公司 | A kind of holing with slurry wall protection cast-in-place pile construction method |
| CN108166483A (en) * | 2017-12-31 | 2018-06-15 | 中铁十九局集团第二工程有限公司 | Bored pile construction method |
| CN108797569A (en) * | 2018-06-26 | 2018-11-13 | 江苏地基工程有限公司 | A kind of control method that drilled pile novel energy-conserving pile crown is superfilled |
| CN110004992A (en) * | 2019-04-19 | 2019-07-12 | 贵州省交通规划勘察设计研究院股份有限公司 | It is a kind of can real-time monitoring bored pile construction device and its application method |
| CN110016911A (en) * | 2019-05-05 | 2019-07-16 | 中国建筑一局(集团)有限公司 | A kind of depth casing mechanical hole building bore forming technique |
| CN111851562A (en) * | 2020-07-22 | 2020-10-30 | 重庆交通建设(集团)有限责任公司 | Movable cast-in-situ bored pile construction platform and method |
| CN112144512A (en) * | 2020-09-11 | 2020-12-29 | 中建六局水利水电建设集团有限公司 | Construction method of concrete cast-in-place pile |
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Application publication date: 20130327 |