CN103147441A - Method for controlling construction verticality of large-sized single pile - Google Patents
Method for controlling construction verticality of large-sized single pile Download PDFInfo
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- CN103147441A CN103147441A CN2012105061411A CN201210506141A CN103147441A CN 103147441 A CN103147441 A CN 103147441A CN 2012105061411 A CN2012105061411 A CN 2012105061411A CN 201210506141 A CN201210506141 A CN 201210506141A CN 103147441 A CN103147441 A CN 103147441A
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Abstract
The invention discloses a method for controlling the construction verticality of a large-sized single pile. The method comprises the following steps of: (1) initially adjusting: hoisting the single pile into a lower pile gripper, gripping upper and lower pile grippers at the same time after the pile is basically placed in the center of the lower pile gripper, and pre-tightening all jacks uniformly; (2) finally adjusting: controlling the levelness of a flange within 1.5 millimeters, loosening a main hook, adjusting a calibration vertical line if adjustment is required, and finding a vertical line control point; (3) pressing a hammer and sinking the pile: loosening the hook, replacing a steel wire rope, sheathing the hammer, and sinking by pressing the pile; (4) sinking the pile; (5) adjusting the hamming energy till the design elevation of 0.5-1 meter is reached, controlling the penetration within 10 millimeters, and sinking the pile to the design elevation; and (6) observing the verticality and the penetration of the pile from the beginning to the end in an entire pile sinking process. Due to the adoption of the method, the problem of high-precision pile sinking of the single pile in an intertidal zone is solved, the verticality of pile sinking is less than 0.2 percent, the construction cost is greatly reduced, and the construction efficiency is increased.
Description
Technical field
The present invention relates to the ocean engineering industry of offshore wind farm industry, particularly marine intertidal wind power generating large diameter pipe sunk pile verticality control method.
Background technology
Oversea wind power generation single pile formula basis is simple in structure and easy for installation because of it, is the most general at present external form.It is made of the steel pipe, and the pipe wall thickness is at 45-70mm, and diameter is 4.5 meters-6.5 meters, by pile driving equipment, single pile is squeezed into bearing stratum.But heavier because of the deadweight of large-scale single pile, the single weight 400-600 ton that weighs only can rely on pile gripper to adjust the verticality of pile body during pile sinking, and the verticality requirement to the single pile pile body is commonly 5 ‰ in the native land outside.A kind of marine intertidal wind power generating large diameter pipe sunk pile perpendicularity control process now is provided, the pile sinking verticality is controlled in 2 ‰, satisfy the direct installation requirement of blower fan.
Summary of the invention
The purpose of this invention is to provide a kind of marine intertidal wind power generating large diameter pipe sunk pile verticality control method, it has solved the problem of zone, intertidal zone single pile high accuracy pile sinking, makes the pile sinking verticality less than 2 ‰, has reduced greatly construction cost, improves efficiency of construction.
In order to solve the existing problem of background technology, the present invention is by the following technical solutions: a kind of large-scale single pile construction verticality control method, 1), initial adjustment comprise the following steps:: single pile hangs in lower pile gripper, make stake behind lower pile gripper center, embrace simultaneously the up and down pile gripper, evenly all jack of pretension; First adjust two gib head height adjusting vertical hanger direction " vertical line " verticality, other direction makes stake remain on plumbness by sling bar or gin pole of maritime works as far as possible, makes slightly stressed getting final product of jack roller contact pile tube outer wall; Slowly subtract and hang the slow loose gib head of lotus, stake is steadily drowned oneself along up and down pile gripper orientation, check simultaneously verticality, as the need adjustment as far as possible with lower pile gripper adjustment, until it is stable to drown oneself; 2), transfer eventually: the flange levelness is controlled at 1.5mm with interior loose main hook, adjust the check and correction vertical line if any adjusting, find the vertical line control point, if finely tune control with the new vertical line of previous status and adjust, otherwise need again hang double hook, with stake pull up according to above method make the stake under plumbness with new " vertical line " be as the criterion readjust the stake verticality, until verticality meets the requirements; 3), the hammer pile sinking: loose hook change steel rope, fuller piling sink, and make an embedded depth 4m to 6m, steady stake check verticality and meet verticality 0.05% with interior requirement; 4), pile sinking: the first hammer is hung up and beaten, pine wire rope 300mm, adopt minimum blow energy to open hammer and click, stop hammer and check pile penetration, verticality, front 3 to 5 hammers are clicked adjusting energy and are controlled pile penetration, begin manual double hit during at 10mm to 50mm when pile penetration, just begun to adopt and touched, little pile penetration pile sinking steadily sinks stake, in case having larger inclination, every pile sinking 500mm to stop hammer, stake checks verticality and pile penetration once; Adjust hammering energy control pile penetration 10mm during 5), to design elevation 0.5m-1m and arrive design elevation with interior pile sinking.
Preferably, described step 1) degree of depth of drowning oneself of king-pile is 2m to 5m.
Preferably, described step 2) if comprise that also hammer drowns oneself and have verticality to depart from process, hammer is sling, adjusted jack.
Preferably, described step 4) also comprise: as verticality, the trend of departing from is arranged, stop hammer and adjust verticality, adjust by a small margin and hammer can be sling, use the pile gripper adjustment, the verticality rear hammer that meets the requirements continues hammering; Verticality departs from when larger, and sash weight drops down onto the deck, and double hook is hung in stake again, and loop wheel machine coordinates pile gripper to adjust verticality; The macro-energy that adds as unchanged in verticality is controlled pile penetration in 50mm to 100mm, and after the stake embedded depth reached 8m, every pile sinking 1000mm stopped hammer and checks verticality and pile penetration once; The stake embedded depth opens lower pile gripper when reaching 18m.
The present invention has following beneficial effect: solved the problem of zone, intertidal zone high accuracy piling, reduced greatly construction cost, reduced separate unit total cost approximately 20%, reduced simultaneously the offshore construction link, greatly reduced security risk.
The specific embodiment
A kind of large-scale single pile construction verticality control method comprises the following steps:
1, initial adjustment: single pile hangs in lower pile gripper, make pile foundation this behind lower pile gripper center, embrace simultaneously the up and down pile gripper, evenly all jack of pretension.First adjust two gib head height adjusting vertical hanger direction " vertical line " verticality, other direction makes stake in plumbness by sling bar or gin pole of maritime works as far as possible, makes slightly stressed getting final product of jack roller contact pile tube outer wall.Slowly subtract and hang the slow loose gib head of lotus, stake is steadily drowned oneself along up and down pile gripper orientation, check simultaneously verticality, try one's best with lower pile gripper adjustment as the need adjustment, until stake is drowned oneself stable (2-5m generally drowns oneself);
2, transfer eventually: the flange levelness is controlled at 1.5mm with interior loose main hook, adjust the check and correction vertical line if any adjusting, (the principle upper, middle and lower is no less than five control points to find the vertical line control point, can record in conjunction with graduation mark), if finely tune control with the new vertical line of previous status and adjust, otherwise need again hang double hook, with stake pull up according to above method make the stake under plumbness with new " vertical line " be as the criterion readjust the stake verticality, until verticality meets the requirements.
3, hammer pile sinking: loose hook change steel rope, the fuller piling is sunk, and stake this moment embedded depth is estimated approximately 4-6m, steady stake checks verticality and meet the requirements (verticality is in 0.05%), hammer is drowned oneself and is departed from if any verticality in process, hammer is sling, and adjusts jack.
4, pile sinking: the first hammer is hung up and beaten, pine wire rope 300mm, adopting minimum blow energy to open hammer clicks, stop hammer and check pile penetration, verticality, front 3-5 hammer is clicked adjusting energy and is controlled pile penetration, begin manual double hit during at 10-50mm when pile penetration, just begun to adopt and touched, little pile penetration pile sinking, stake is steadily sunk, in case stake has larger inclination, every pile sinking 500mm stops hammer and checks that verticality and pile penetration once (have as verticality the trend of departing from, stop hammer and adjust verticality, adjust by a small margin and hammer can be sling, use the pile gripper adjustment, meet the requirements rear hammer of verticality continues hammering.Verticality departs from when larger, and sash weight drops down onto the deck, and double hook is hung in stake again, and loop wheel machine coordinates pile gripper to adjust verticality).Verticality such as the unchanged macro-energy that adds are controlled pile penetration in 50-100mm, and after the stake embedded depth reached 8m, every pile sinking 1000mm stopped hammer and checks verticality and pile penetration once; The stake embedded depth opens lower pile gripper when reaching 18m.
Adjust hammering energy control pile penetration 10mm during 5, to design elevation 0.5m-1m and arrive design elevation with interior pile sinking.
6, whole pile driving process is observed verticality, the pile penetration of stake all the time, and hoistman is controlled the gib head height well, hammering when forbidding the sash weight wire rope stressed, and especially personnel's notice at each control point is wanted high concentration before upper pile gripper opens, and notes abnormalities at once to stop hammer.
7, the stake embedded depth opened of pile gripper will preset by the geologic report basic according to each, should guarantee the verticality of stake, guarantees again the safety of pile gripper.
The invention solves the problem of zone, intertidal zone single pile high accuracy pile sinking, make the pile sinking verticality less than 2 ‰, reduced greatly construction cost, improved efficiency of construction.
Obviously, the above embodiment of the present invention is only for example of the present invention clearly is described, and is not to be restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make on the basis of the above description other multi-form variation and changes.Here can't give all embodiments exhaustive.Everyly belong to the row that apparent variation that technical scheme of the present invention amplifies out or change still are in protection scope of the present invention.
Claims (4)
1. one kind large-scale single pile construction verticality control method comprises the following steps:
1), initial adjustment: single pile hangs in lower pile gripper, makes stake behind lower pile gripper center, embraces simultaneously the up and down pile gripper, evenly all jack of pretension; First adjust two gib head height adjusting vertical hanger direction " vertical line " verticality, other direction makes stake remain on plumbness by sling bar or gin pole of maritime works as far as possible, makes slightly stressed getting final product of jack roller contact pile tube outer wall; Slowly subtract and hang the slow loose gib head of lotus, stake is steadily drowned oneself along up and down pile gripper orientation, check simultaneously verticality, as the need adjustment as far as possible with lower pile gripper adjustment, until it is stable to drown oneself;
2), transfer eventually: the flange levelness is controlled at 1.5mm with interior loose main hook, adjust the check and correction vertical line if any adjusting, find the vertical line control point, if finely tune control with the new vertical line of previous status and adjust, otherwise need again hang double hook, with stake pull up according to above method make the stake under plumbness with new " vertical line " be as the criterion readjust the stake verticality, until verticality meets the requirements;
3), the hammer pile sinking: loose hook change steel rope, fuller piling sink, and make an embedded depth 4m to 6m, steady stake check verticality and meet verticality 0.05% with interior requirement;
4), pile sinking: the first hammer is hung up and beaten, pine wire rope 300mm, adopt minimum blow energy to open hammer and click, stop hammer and check pile penetration, verticality, front 3 to 5 hammers are clicked adjusting energy and are controlled pile penetration, begin manual double hit during at 10mm to 50mm when pile penetration, just begun to adopt and touched, little pile penetration pile sinking steadily sinks stake, in case having larger inclination, every pile sinking 500mm to stop hammer, stake checks verticality and pile penetration once;
Adjust hammering energy control pile penetration 10mm during 5), to design elevation 0.5m-1m and arrive design elevation with interior pile sinking.
2. large-scale single pile construction verticality control method according to claim 1, described step 1) degree of depth of drowning oneself of king-pile is 2m to 5m.
3. large-scale single pile construction verticality control method according to claim 1, described step 2) also comprise: there is verticality to depart from if hammer is drowned oneself in process, hammer sling, adjust jack.
4. large-scale single pile construction verticality control method according to claim 1, described step 4) also comprise: as verticality, the trend of departing from is arranged, stop hammer and adjust verticality, adjust by a small margin and hammer can be sling, use the pile gripper adjustment, meet the requirements rear hammer of verticality continues hammering; Verticality departs from when larger, and sash weight drops down onto the deck, and double hook is hung in stake again, and loop wheel machine coordinates pile gripper to adjust verticality; The macro-energy that adds as unchanged in verticality is controlled pile penetration in 50mm to 100mm, and after the stake embedded depth reached 8m, every pile sinking 1000mm stopped hammer and checks verticality and pile penetration once; The stake embedded depth opens lower pile gripper when reaching 18m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105061411A CN103147441A (en) | 2012-12-03 | 2012-12-03 | Method for controlling construction verticality of large-sized single pile |
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| CN2012105061411A CN103147441A (en) | 2012-12-03 | 2012-12-03 | Method for controlling construction verticality of large-sized single pile |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649080A (en) * | 2015-12-31 | 2016-06-08 | 中交第三航务工程局有限公司宁波分公司 | Single-pile pile sinking method |
| CN108505534A (en) * | 2018-05-24 | 2018-09-07 | 中能电力科技开发有限公司 | A kind of embedding rock single pile construction method of offshore wind turbine base expanding and base expanding formula and system |
| CN109371970A (en) * | 2018-11-13 | 2019-02-22 | 南通市海洋水建工程有限公司 | One kind being used for offshore wind farm single pile pile sinking stable platform and its localization method |
| CN110949615A (en) * | 2019-11-15 | 2020-04-03 | 中国电建集团华东勘测设计研究院有限公司 | Floating pile-stabilizing platform device based on anchoring positioning control and pile sinking method |
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| JPH10114941A (en) * | 1996-10-14 | 1998-05-06 | ▲吉▼野建設株式会社 | Traveling crane for driving pile |
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| CN102425167A (en) * | 2011-11-25 | 2012-04-25 | 天津港航工程有限公司 | Pile sinking method for driving large-diameter steel pipe pile in intertidal zone |
| CN102587378A (en) * | 2012-03-26 | 2012-07-18 | 江苏龙源振华海洋工程有限公司 | Perpendicularity error correction technique for hydraulic impact driving of single pipe pile on sea intertidal zone |
| CN102587374A (en) * | 2012-03-26 | 2012-07-18 | 江苏龙源振华海洋工程有限公司 | Perpendicularity control process for single-tubular-pile foundation of offshore intertidal wind farm |
| CN102787600A (en) * | 2012-05-17 | 2012-11-21 | 中国一冶集团有限公司 | Precise control method of steel pile inserting verticality |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10114941A (en) * | 1996-10-14 | 1998-05-06 | ▲吉▼野建設株式会社 | Traveling crane for driving pile |
| CN102392446A (en) * | 2011-09-09 | 2012-03-28 | 江苏海上龙源风力发电有限公司 | Construction technique for large single pile without transition segment |
| CN102425167A (en) * | 2011-11-25 | 2012-04-25 | 天津港航工程有限公司 | Pile sinking method for driving large-diameter steel pipe pile in intertidal zone |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649080A (en) * | 2015-12-31 | 2016-06-08 | 中交第三航务工程局有限公司宁波分公司 | Single-pile pile sinking method |
| CN108505534A (en) * | 2018-05-24 | 2018-09-07 | 中能电力科技开发有限公司 | A kind of embedding rock single pile construction method of offshore wind turbine base expanding and base expanding formula and system |
| CN109371970A (en) * | 2018-11-13 | 2019-02-22 | 南通市海洋水建工程有限公司 | One kind being used for offshore wind farm single pile pile sinking stable platform and its localization method |
| CN109371970B (en) * | 2018-11-13 | 2023-11-07 | 南通市海洋水建工程有限公司 | Single pile sinking stable platform for offshore wind power and positioning method thereof |
| CN110949615A (en) * | 2019-11-15 | 2020-04-03 | 中国电建集团华东勘测设计研究院有限公司 | Floating pile-stabilizing platform device based on anchoring positioning control and pile sinking method |
| CN110949615B (en) * | 2019-11-15 | 2020-12-29 | 中国电建集团华东勘测设计研究院有限公司 | Floating pile-stabilizing platform device based on anchoring positioning control and pile sinking method |
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Application publication date: 20130612 |