CN102628266A - Construction method of long spiral cast-in-situ bored pile - Google Patents
Construction method of long spiral cast-in-situ bored pile Download PDFInfo
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- CN102628266A CN102628266A CN2011104510955A CN201110451095A CN102628266A CN 102628266 A CN102628266 A CN 102628266A CN 2011104510955 A CN2011104510955 A CN 2011104510955A CN 201110451095 A CN201110451095 A CN 201110451095A CN 102628266 A CN102628266 A CN 102628266A
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Abstract
The invention discloses a construction method of a long spiral cast-in-situ bored pile. When used for constructing the cast-in-situ bored pile in an underground station, the method has the advantages of good pile forming quality, short construction period, high effect, no need of mud preparing, circulating and disposal sites and other places, small influence on the surrounding environment, good pile forming quality and the like, and can satisfy the characteristics and requirements, such as high construction environment protection requirement, of the underground station. In addition, the construction method disclosed by the invention is also applicable to various soils, such as clays, silts and miscellaneous fills, and can be used for constructing cast-in-situ bored piles under complicated geological conditions which are liable to generate collapse, hole shrinkage and the like, such as soft soil, drift sand formation, sand-pebble layers, and high underground water levels.
Description
Technical field
The present invention relates to a kind of long screw auger drilling deposited pile job practices, especially relate to a kind of under subway station or other complex geological conditions the job practices of long screw auger drilling deposited pile.
Background technology
Build subway in the city; Want the construction drill castinplace pile as space enclosing structure or uplift pile, bearing pile etc. inevitably; Use abrasion drill traditionally, revolve to dig to bore and unavoidably in the construction produce quality problems such as the hole that collapses, undergauge, sediment be blocked up; And need a large amount of mud offs in the process, need mud to make, circulate, throw aside the place, building subway in the city does not often have the place to supply above-mentioned operation use.
Summary of the invention
Goal of the invention of the present invention is: places such as providing a kind of and need not slurrying, circulate, throw aside, can satisfy the bored pile construction method that the protection of subway construction environment requires characteristics such as height.
In order to solve the problems of the technologies described above, the technical scheme that the present invention adopted is following: a kind of job practices of long screw auger drilling deposited pile comprises the steps:
The first step, levelling of the land and measurement unwrapping wire:
The construction plant is carried out measuring unwrapping wire after smooth, measure ground level in the place, to confirm a stake top buried depth; According to the structure sideline relation of design drawing, the measuring corner is initial and finish a stake position and a control point, and checks;
Second step, rig is in place:
With the front and back of rig body of the tower with about vertical mark post inspection body of the tower guide rod; Carry out a machine rectify perpendicular with total powerstation before the boring first; Telephone-moving makes center, drilling rod perpendicular alignmnet stake position again, makes perpendicularity deviation≤3 ‰, to guarantee that pile body verticality allowable deviation is in allowed band;
The 3rd step, drilling and forming hole:
When beginning boring, close the drill bit valve, move down drilling rod when drill bit touches ground, starter creeps into; The earlier slow back of rate of penetration is fast, and the following 3m rate of penetration in the face of land is smaller or equal to 1m/min, creeps into behind the 3m rate of penetration and is promoted to 2m/min and accomplishes until drilling construction; When drill bit arrival designing pile length is scheduled to absolute altitude; Corresponding rig body of the tower place makes eye-catching mark in stop place, unit head bottom surface; The dark foundation of control hole during as construction; The mark stake is long promptly to meet design requirement when the unit head bottom surface reaches, and also needs the absolute altitude difference according to the construction working face during construction, does corresponding increase and decrease;
The 4th goes on foot, pours into and pull out brill:
Pore-forming stops to creep into after design elevation, beginning pumping pea gravel concreten; Proportioning is cement 345kg, admixture 65kg, water 190kg; Sand 760kg, rubble 1030kg, Admixture 10kg; The rubble diameter is 0.5-1.5 cm, and the slump is generally 18～22cm, after the drilling rod heart is full of compound, could begin tube drawing; The promotion speed and the rate of pumping of drilling rod are complementary, and are controlled between 90cm～110cm/min; Formation of pile needs continuous synchronization to carry out, and the inventory of every pile needs greater than the design groundwater increment in the construction, and stake top mark height need be higher than design elevation 50cm;
Reinforcing cage is inserted in the 5th step, back:
After processing reinforcing cage on the ground, adopt mobile crane once to lift by crane, in reinforcing cage, insert vibrator; The Vibration on Start-up device, vibrating arm inserts in the plain stake of concrete together with view picture reinforcing cage one-time continuous ground, and the reinforcing cage subsidence velocity is controlled at about 5-6m/min; Need guarantee the verticality of reinforcing cage during insertion; After reinforcing cage all inserted and puts in place, inspection reinforcing cage top, aperture absolute altitude carried out next step operation after meeting the demands;
The 6th step, after the construction of a last pile finishes, the rig displacement is adopted and is jumped pile construction method and carry out the construction of next pile.
When said levelling of the land of the first step and measurement unwrapping wire; If exist long-spiral drilling machine in the hole, to construct or the survey mark position is a construction area; Can't guarantee then need make fender pile under survey mark long-term existence or the normal situation about using, in the work progress survey mark damaged avoiding.
Before the said rig displacement of the 6th step, also should check calibration to the stake position of need construction according to the position of axis or stake on every side, guarantee the stake position accurately.
Compared with prior art; The invention has the beneficial effects as follows: in metro station construction, adopt this method construction drill castinplace pile; Not only pile quality is good; And have short, advantage such as effect is high, need not slurrying, the place such as circulate, throw aside, and is little to the surrounding enviroment influence, that pile quality is good of duration, can satisfy characteristics and requirements such as the duration is tight in the subway work, the place is narrow and small, environmental protection requirement height.
In addition, this job practices also is applicable to various soil properties such as clay, silt, miscellaneous fill, can be easy to generate construction drill castinplace pile under the complex geological conditions such as geology such as the hole that collapses, undergauge such as weak soil, drift sand formation, sand-pebble layer, groundwater table height.
The specific embodiment
A kind of job practices of long screw auger drilling deposited pile comprises the steps:
The first step, levelling of the land and measurement unwrapping wire
The construction plant is carried out measuring unwrapping wire after smooth, measure ground level in the place, to confirm a stake top buried depth; According to the structure sideline of design drawing relation, the measuring corner initial with finish a stake and a relevant control point, and check; If exist long-spiral drilling machine can't be in the hole construction or survey mark position be construction area, can't guarantee then need make fender pile under the situation of survey mark long-term existence or normal use, in the work progress survey mark is damaged avoiding.
Second step, rig is in place
After rig is in place; With the front and back of rig body of the tower with about vertical mark post inspection body of the tower guide rod, carry out a machine rectify perpendicular with total powerstation before the boring first, telephone-moving makes center, drilling rod perpendicular alignmnet stake position again; Make perpendicularity deviation≤3 ‰, to guarantee that pile body verticality allowable deviation is in allowed band.
The 3rd step, drilling and forming hole
When beginning boring, close the drill bit valve, move down drilling rod when drill bit touches ground, starter creeps into.The earlier slow back of rate of penetration is fast, and following the 3m rate of penetration in the face of land should not be greater than 1m/min, creeps into behind the 3m rate of penetration and is promoted to 2m/min and accomplishes until drilling construction, can reduce drilling rod like this and rock, and the deviation of inspection boring easily again is so that correction in time.In pore forming process, as finding that drilling rod rocks or during difficult boring, then slow down drilling depth, avoiding causing a hole deflection, displacement, even drilling rod, drilling tool are damaged.When drill bit arrival designing pile length was scheduled to absolute altitude, corresponding rig body of the tower place made eye-catching mark in stop place, unit head bottom surface, the dark foundation of control hole during as construction.The mark stake is long promptly to meet design requirement when the unit head bottom surface reaches.Also need consider the absolute altitude difference of construction working face during construction, do corresponding increase and decrease.
Formulate the stake information form according to the stake of diverse location and type in case of necessity, calculate the information such as type, the degree of depth and position of every pile, consult at the convenient construction scene.
The 4th goes on foot, pours into and pull out brill
Pore-forming stops to creep into after design elevation, beginning pumping pea gravel concreten, and proportioning is cement 345kg; Admixture 65kg, water 190kg, sand 760kg; Rubble 1030kg, Admixture 10kg, rubble diameter are 0.5-1.5 cm; The slump is generally 18～22cm, after the drilling rod heart is full of compound, begins tube drawing, forbids to carry earlier pipe back stock.The promotion speed of drilling rod should adjust accordingly according to pumping pressure and pump truck performance; Guarantee that drilling rod hoisting velocity and rate of pumping are complementary; Generally be controlled between 90cm～110cm ∕ min, to guarantee pile quality, the generation of the phenomenons such as hole, undergauge, pile body slag inclusion or broken pile of avoiding collapsing.Formation of pile should continuous synchronization carry out, and should avoid waiting to expect because of the backstage feed causes shutting down slowly.The inventory of every pile must not be less than the design groundwater increment in the construction, and stake top mark height should be higher than design elevation 50cm.
Reinforcing cage is inserted in the 5th step, back
After processing reinforcing cage on the ground, adopt mobile crane once to lift by crane, in reinforcing cage, insert vibrator; The Vibration on Start-up device, vibrating arm inserts in the plain stake of concrete together with view picture reinforcing cage one-time continuous ground, and the reinforcing cage subsidence velocity is controlled at about 5-6m/min; The verticality of the control of close inspection during insertion reinforcing cage; After reinforcing cage all inserted and puts in place, inspection reinforcing cage top, aperture absolute altitude carried out next step operation after meeting the demands.
The 6th step, rig displacement
After last pile construction finished, the construction of next pile was carried out in the rig displacement, generally takes to jump pile driving construction.Because long screw pile unearthed more, the stake position that often will close on covers during construction, and feet is pressed in that the stake position is other to make being moved of former demarcation in the time of also can supporting because of rig sometimes.Therefore, during next pile construction, also should check calibration to the stake position of need construction, guarantee the stake position accurately according to the position of axis or stake on every side.
Claims (3)
1. the job practices of a long screw auger drilling deposited pile is characterized in that, comprises the steps:
The first step, levelling of the land and measurement unwrapping wire:
The construction plant is carried out measuring unwrapping wire after smooth, measure ground level in the place, to confirm a stake top buried depth; According to the structure sideline relation of design drawing, the measuring corner is initial and finish a stake position and a control point, and checks;
Second step, rig is in place:
After rig is in place; With the front and back of rig body of the tower with about vertical mark post inspection body of the tower guide rod, carry out a machine rectify perpendicular with total powerstation before the boring first, telephone-moving makes center, drilling rod perpendicular alignmnet stake position again; Make perpendicularity deviation≤3 ‰, to guarantee that pile body verticality allowable deviation is in allowed band;
The 3rd step, drilling and forming hole:
When beginning boring, close the drill bit valve, move down drilling rod when drill bit touches ground, starter creeps into; The earlier slow back of rate of penetration is fast, and the following 3m rate of penetration in the face of land is smaller or equal to 1m/min, creeps into behind the 3m rate of penetration and is promoted to 2m/min and accomplishes until drilling construction; When drill bit arrival designing pile length is scheduled to absolute altitude; Corresponding rig body of the tower place makes eye-catching mark in stop place, unit head bottom surface; The dark foundation of control hole during as construction; The mark stake is long promptly to meet design requirement when the unit head bottom surface reaches, and also needs the absolute altitude difference according to the construction working face during construction, does corresponding increase and decrease;
The 4th goes on foot, pours into and pull out brill:
Pore-forming stops to creep into after design elevation, beginning pumping pea gravel concreten; Proportioning is cement 345kg, admixture 65kg, water 190kg; Sand 760kg, rubble 1030kg, Admixture 10kg; The rubble diameter is 0.5-1.5 cm, and the slump is generally 18～22cm, after the drilling rod heart is full of compound, could begin tube drawing; The promotion speed and the rate of pumping of drilling rod are complementary, and are controlled between 90cm～110cm/min; Formation of pile needs continuous synchronization to carry out, and the inventory of every pile needs greater than the design groundwater increment in the construction, and stake top mark height need be higher than design elevation 50cm;
Reinforcing cage is inserted in the 5th step, back:
After processing reinforcing cage on the ground, adopt mobile crane once to lift by crane, in reinforcing cage, insert vibrator; The Vibration on Start-up device, vibrating arm inserts in the plain stake of concrete together with view picture reinforcing cage one-time continuous ground, and the reinforcing cage subsidence velocity is controlled at 5-6m/min; Need guarantee the verticality of reinforcing cage during insertion; After reinforcing cage all inserted and puts in place, inspection reinforcing cage top, aperture absolute altitude carried out next step operation after meeting the demands;
The 6th step, after the construction of a last pile finishes, the rig displacement is adopted and is jumped pile construction method and carry out the construction of next pile.
2. the job practices of long screw auger drilling deposited pile according to claim 1; It is characterized in that: when said levelling of the land of the first step and measurement unwrapping wire; If exist long-spiral drilling machine in the hole, to construct or the survey mark position is a construction area; Can't guarantee then need make fender pile under survey mark long-term existence or the normal situation about using, in the work progress survey mark damaged avoiding.
3. the job practices of long screw auger drilling deposited pile according to claim 1 is characterized in that: before the said rig displacement of the 6th step, also should check calibration to the stake position of need construction according to the position of axis or stake on every side, guarantee the stake position accurately.
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| CN2011104510955A CN102628266A (en) | 2011-12-30 | 2011-12-30 | Construction method of long spiral cast-in-situ bored pile |
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| CN2011104510955A CN102628266A (en) | 2011-12-30 | 2011-12-30 | Construction method of long spiral cast-in-situ bored pile |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797254A (en) * | 2012-09-10 | 2012-11-28 | 马春根 | Construction method for bottom-expanded pile casting by long-spiral drilling and compacted half soil sampling |
| CN103243709A (en) * | 2013-05-20 | 2013-08-14 | 马春根 | Fast noise-free inserting construction method for super long reinforcement cage |
| CN104250970A (en) * | 2013-06-27 | 2014-12-31 | 上海城地建设股份有限公司 | Novel visual intelligent super-fluid cast-in-place concrete pile device and construction method |
| CN104278680A (en) * | 2013-07-01 | 2015-01-14 | 上海城地建设股份有限公司 | Envelope structure combining five (six) shaft mixing piles with press grouting piles and construction method |
| CN104452593A (en) * | 2014-10-24 | 2015-03-25 | 中铁四局集团有限公司 | Cast-in-situ bored pile jump hole symmetrical pore-forming construction process conducted on high-speed rail high pier side edges |
| CN104631438A (en) * | 2015-01-27 | 2015-05-20 | 安徽同济建设集团有限责任公司 | Method for constructing long auger bored cast-with-pressure concrete uplift pile |
| CN104727305A (en) * | 2015-01-27 | 2015-06-24 | 安徽同济建设集团有限责任公司 | Drilling and high-pressure grouting construction method for uplift pile |
| CN105239561A (en) * | 2015-09-01 | 2016-01-13 | 北京建材地质工程公司 | Long spiral mix spray pre-grouting press concrete post-inserted steel reinforcement cage cast-in-place pile construction process |
| CN106639915A (en) * | 2017-01-11 | 2017-05-10 | 中国化学工程重型机械化公司 | Construction device for long-spiral filling pile and construction process thereof |
| CN106677168A (en) * | 2017-01-17 | 2017-05-17 | 浙江勤业建工集团有限公司 | Construction method of cast-in-place superfluid concrete pile |
| CN108978640A (en) * | 2018-08-07 | 2018-12-11 | 佛山市房建集团有限公司 | Cast-in-place pile construction method |
| CN110644475A (en) * | 2019-09-25 | 2020-01-03 | 瑞森新建筑有限公司 | Method for filling pile by inserting steel bars after long spiral drilling and concrete pressure pouring |
| CN112302003A (en) * | 2020-10-23 | 2021-02-02 | 浙江迅犀建设有限责任公司 | Construction method of large-diameter long spiral full-casing pressure-grouting pile for sludge stratum |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797254A (en) * | 2012-09-10 | 2012-11-28 | 马春根 | Construction method for bottom-expanded pile casting by long-spiral drilling and compacted half soil sampling |
| CN103243709A (en) * | 2013-05-20 | 2013-08-14 | 马春根 | Fast noise-free inserting construction method for super long reinforcement cage |
| CN104250970A (en) * | 2013-06-27 | 2014-12-31 | 上海城地建设股份有限公司 | Novel visual intelligent super-fluid cast-in-place concrete pile device and construction method |
| CN104278680A (en) * | 2013-07-01 | 2015-01-14 | 上海城地建设股份有限公司 | Envelope structure combining five (six) shaft mixing piles with press grouting piles and construction method |
| CN104452593B (en) * | 2014-10-24 | 2016-06-01 | 中铁四局集团有限公司 | The cast-in place pile of a kind of high ferro height bridge pier side jumps the symmetrical construction method in hole |
| CN104452593A (en) * | 2014-10-24 | 2015-03-25 | 中铁四局集团有限公司 | Cast-in-situ bored pile jump hole symmetrical pore-forming construction process conducted on high-speed rail high pier side edges |
| CN104631438A (en) * | 2015-01-27 | 2015-05-20 | 安徽同济建设集团有限责任公司 | Method for constructing long auger bored cast-with-pressure concrete uplift pile |
| CN104727305A (en) * | 2015-01-27 | 2015-06-24 | 安徽同济建设集团有限责任公司 | Drilling and high-pressure grouting construction method for uplift pile |
| CN104631438B (en) * | 2015-01-27 | 2016-08-24 | 安徽同济建设集团有限责任公司 | Long auger guncreting uplift pile construction method |
| CN104727305B (en) * | 2015-01-27 | 2016-11-02 | 安徽同济建设集团有限责任公司 | Boring high-pressure slip-casting uplift pile construction method |
| CN105239561A (en) * | 2015-09-01 | 2016-01-13 | 北京建材地质工程公司 | Long spiral mix spray pre-grouting press concrete post-inserted steel reinforcement cage cast-in-place pile construction process |
| CN106639915A (en) * | 2017-01-11 | 2017-05-10 | 中国化学工程重型机械化公司 | Construction device for long-spiral filling pile and construction process thereof |
| CN106677168A (en) * | 2017-01-17 | 2017-05-17 | 浙江勤业建工集团有限公司 | Construction method of cast-in-place superfluid concrete pile |
| CN108978640A (en) * | 2018-08-07 | 2018-12-11 | 佛山市房建集团有限公司 | Cast-in-place pile construction method |
| CN110644475A (en) * | 2019-09-25 | 2020-01-03 | 瑞森新建筑有限公司 | Method for filling pile by inserting steel bars after long spiral drilling and concrete pressure pouring |
| CN112302003A (en) * | 2020-10-23 | 2021-02-02 | 浙江迅犀建设有限责任公司 | Construction method of large-diameter long spiral full-casing pressure-grouting pile for sludge stratum |
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Application publication date: 20120808 |