CN102392446A - Construction technique for large single pile without transition segment - Google Patents
Construction technique for large single pile without transition segment Download PDFInfo
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- CN102392446A CN102392446A CN2011102670485A CN201110267048A CN102392446A CN 102392446 A CN102392446 A CN 102392446A CN 2011102670485 A CN2011102670485 A CN 2011102670485A CN 201110267048 A CN201110267048 A CN 201110267048A CN 102392446 A CN102392446 A CN 102392446A
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Abstract
The invention discloses a construction technique for large single pile without transition segment, which comprises the following steps: using a hoisting device for hoisting a steel pipe pile horizontally; adjusting the steel pipe pile to the vertical direction; hoisting the steel pipe pile vertically into a pile gripper; regulating the perpendicularity of the steel pipe pile to be in 2/1,000 and sinking the steel pipe pile; pressing a hydraulic pile hammer to the top of the steel pipe pile; adjusting the perpendicularity of the pile body via an adjuster on the pile gripper till the perpendicularity is adjusted to be in 1/1,000; striking the steel pipe pile by the hydraulic pile hammer for continuing pile sinking; measuring the perpendicularity of the steel pipe pile, and controlling the perpendicularity to be in 2/1,000 by adjusting the adjuster on the pile gripper. The construction technique for large single pile without transition segment has the following advantages: the technique solves problems of high-precision pile striking in intertidal zone, and reduces the construction cost enormously after saving transition segments and high-sintensity grouting materials, which reduces approximately 20% of the total cost of a single one; meanwhile, the technique reduces offshore construction links, which reduces safety risks enormously.
Description
Technical field
The present invention relates to the construction technology of offshore wind farm industry, relate in particular to a kind of large-scale no changeover portion single pile construction technology, this construction technology can be carried out high accuracy piling to large-diameter tubular pile.
Background technology
The intertidal zone is between the high and low tidal level of spring tide, the area that is submerged and exposes with tiding.According to preresearch estimates, the intertidal zone annual mean wind speed can reach the 6-7 meter per second, so possesses utilizable wind energy in the intertidal zone.For the intertidal belt wind electric engineering, it is mainly concerned with the construction on wind-powered electricity generation unit basis.
Because the basis of offshore wind farm unit is in the sea, has increased many extra load and uncertain factor, thereby design is comparatively complicated, and form of structure is the variation owing to different sea situations also.What the fixed basis of offshore wind farm unit was the most frequently used has 3 kinds, single pile formula, gravity, triangle posture.Single pile formula basis is simple in structure and easy for installation because of it, is present general form.This pile tube is made up of the steel pipe, and the pipe wall thickness is at 45-70mm, and diameter is 4.5 meters-6.5 meters, through pile driving equipment single pile is squeezed into bearing stratum.
Blower fan installation requirement basis flange levelness will reach in 2 ‰, also is that the steel pipe pile verticality is in 2 ‰.Conventional piling verticality precision is 1%, and difficulty reaches above requirement, so need to carry out leveling through the transition steel sleeve basic top flange levelness is reached in 2 ‰, between transition steel pipe and steel pipe pile, connects through high-strength grout.But this processes expend extra steel and grouting material, increased cost.Increase marine construction link in addition, increased security risk.
Therefore, need provide a kind of large-scale no changeover portion single pile construction technology to address the above problem.
Summary of the invention
In order to address this problem, the invention discloses a kind of large-scale no changeover portion single pile construction technology, said construction technology may further comprise the steps:
(1) adopt boom hoisting that the steel pipe pile level is sling;
(2) steel pipe pile is adjusted into vertical direction;
(3) above-mentioned steel pipe pile is vertically hung in the pile holding device;
(4) adjust in the verticality to 2 ‰ of steel pipe pile, and steel pipe pile is drowned oneself;
(5) hydraulic pile hammer is depressed into the steel pipe pile top;
(6) utilize the adjusting device on the pile holding device that the pile body verticality is adjusted, be adjusted in 1 ‰ up to verticality;
(7) hit steel pipe pile through hydraulic pile hammer and continue pile sinking;
(8) measure the verticality of steel pipe pile, and verticality is controlled in 2 ‰ through the adjusting device on the adjustment pile holding device.
Preferably, said pile holding device comprises pile holding device and following pile holding device.
Preferably, said pile holding device is an annular, and it is provided with some jack, and said jack is to the center of circle of the annulus direction application of force.
The present invention has following beneficial effect: the problem that has solved the high accuracy piling of zone, intertidal zone; Behind cancellation changeover portion and the high-strength grout, reduce construction cost greatly, reduced separate unit total cost about 20%; Reduce the offshore construction link simultaneously, greatly reduce security risk.
In the summary of the invention part, introduced the notion of a series of reduced forms, this will further explain in specific embodiment part.Content part of the present invention does not also mean that key feature and the essential features that will attempt to limit technical scheme required for protection, does not more mean that the protection domain of attempting to confirm technical scheme required for protection.
Below in conjunction with accompanying drawing, specify advantage of the present invention and characteristic.
Description of drawings
Fig. 1 is the sketch map that the level of large-scale according to an embodiment of the invention no changeover portion single pile construction technology is hung stake;
Fig. 2 is the sketch map of the vertical staking out of large-scale according to an embodiment of the invention no changeover portion single pile construction technology;
Fig. 3 is the sketch map that hangs in the pile holding device of large-scale according to an embodiment of the invention no changeover portion single pile construction technology;
Fig. 4 is the sketch map of the pile holding device of large-scale according to an embodiment of the invention no changeover portion single pile construction technology;
Fig. 5 is that the hydraulic pile hammer that passes through of large-scale according to an embodiment of the invention no changeover portion single pile construction technology hits the sketch map that steel pipe pile continues pile sinking.
The specific embodiment
In the description hereinafter, a large amount of concrete details have been provided so that more thorough understanding of the invention is provided.Yet, it will be apparent to one skilled in the art that the present invention can need not one or more these details and be able to enforcement.In other example,, describe for technical characterictics more well known in the art for fear of obscuring with the present invention.
In order thoroughly to understand the present invention, detailed structure will be proposed in following description.Obviously, execution of the present invention is not limited to the specific details that those skilled in the art has the knack of.Preferred embodiment of the present invention is described in detail as follows, yet except these were described in detail, the present invention can also have other embodiments.
Below in conjunction with accompanying drawing embodiments of the invention are done detailed description.
Large-scale no changeover portion single pile construction technology according to the present invention may further comprise the steps:
1. adopt boom hoisting that the steel pipe pile level is sling.With reference to figure 1, for example can carry out the level lifting through 1 pair of steel pipe pile of 800T crane barge 2.Respectively be provided with hanger 21 in the rear and front end of steel pipe pile and 22, two hangers are connected on the boom hoisting 1 through two wire rope.
2. steel pipe pile is adjusted into vertical direction.For example through drawing high wherein one and steel pipe pile is adjusted into vertical direction of above-mentioned two wire rope.The steel pipe pile that Fig. 2 shows level is adjusted into the several sketch mapes in vertical centre.
3. above-mentioned steel pipe pile is vertically hung in the pile holding device.With reference to figure 4, this pile holding device 3 can be divided into pile holding device 31 and following pile holding device 32, regulates with the verticality of keeping steel pipe pile 2 and to verticality.This pile holding device 3 is an annular, and it is provided with some jack, and jack can be to the center of circle of the annulus direction application of force.Therefore, can embrace steel pipe pile 2 through this pile holding device 3.And be applied to the power on the steel pipe pile through adjusting certain jack, can adjust the incline direction of steel pipe pile 2, thereby adjust its verticality.
4. adjust in the verticality to 2 ‰ of steel pipe pile, and steel pipe pile is drowned oneself, with reference to figure 3.
5. hydraulic pile hammer is depressed into the steel pipe pile top.Steel pipe pile will continue to sink owing to the deadweight of hydraulic pile hammer this moment.
6. utilize the adjusting device on the pile holding device that the pile body verticality is adjusted, be adjusted in 1 ‰ up to verticality.
7. hit steel pipe pile through hydraulic pile hammer 4 and continue pile sinking.With reference to figure 5.
8. measure the verticality of steel pipe pile, and verticality is controlled in 2 ‰ through the adjusting device on the adjustment pile holding device.
The present invention has following beneficial effect: the problem that has solved the high accuracy piling of zone, intertidal zone; Behind cancellation changeover portion and the high-strength grout, reduce construction cost greatly, reduced separate unit total cost about 20%; Reduce the offshore construction link simultaneously, greatly reduce security risk.
The present invention is illustrated through the foregoing description, but should be understood that, the foregoing description just is used for for example and illustrative purposes, but not is intended to the present invention is limited in the described scope of embodiments.It will be appreciated by persons skilled in the art that in addition the present invention is not limited to the foregoing description, can also make more kinds of variants and modifications according to instruction of the present invention, these variants and modifications all drop in the present invention's scope required for protection.Protection scope of the present invention is defined by appended claims book and equivalent scope thereof.
Claims (3)
1. one kind large-scale no changeover portion single pile construction technology is characterized in that said construction technology may further comprise the steps:
(1) adopt boom hoisting that the steel pipe pile level is sling;
(2) steel pipe pile is adjusted into vertical direction;
(3) above-mentioned steel pipe pile is vertically hung in the pile holding device;
(4) adjust in the verticality to 2 ‰ of steel pipe pile, and steel pipe pile is drowned oneself;
(5) hydraulic pile hammer is depressed into the steel pipe pile top;
(6) utilize the adjusting device on the pile holding device that the pile body verticality is adjusted, be adjusted in 1 ‰ up to verticality;
(7) hit steel pipe pile through hydraulic pile hammer and continue pile sinking;
(8) measure the verticality of steel pipe pile, and verticality is controlled in 2 ‰ through the adjusting device on the adjustment pile holding device.
2. according to the described large-scale no changeover portion single pile construction technology of claim 1, it is characterized in that said pile holding device comprises pile holding device and following pile holding device.
3. according to the described large-scale no changeover portion single pile construction technology of claim 2, it is characterized in that said pile holding device is an annular, it is provided with some jack, and said jack is to the center of circle of the annulus direction application of force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102670485A CN102392446A (en) | 2011-09-09 | 2011-09-09 | Construction technique for large single pile without transition segment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102670485A CN102392446A (en) | 2011-09-09 | 2011-09-09 | Construction technique for large single pile without transition segment |
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| Publication Number | Publication Date |
|---|---|
| CN102392446A true CN102392446A (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102670485A Pending CN102392446A (en) | 2011-09-09 | 2011-09-09 | Construction technique for large single pile without transition segment |
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| CN (1) | CN102392446A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147441A (en) * | 2012-12-03 | 2013-06-12 | 龙源电力集团股份有限公司 | Method for controlling construction verticality of large-sized single pile |
| CN104929125A (en) * | 2015-04-25 | 2015-09-23 | 王继忠 | Carrier pile construction equipment and carrier pile construction method |
| 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 |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2277422Y (en) * | 1996-06-24 | 1998-04-01 | 蔡崇晓 | High-efficiency full hydraulic pile-driver |
| CN101812849A (en) * | 2010-04-02 | 2010-08-25 | 中国海洋石油总公司 | Offshore single-pile base structure and installation method thereof |
-
2011
- 2011-09-09 CN CN2011102670485A patent/CN102392446A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2277422Y (en) * | 1996-06-24 | 1998-04-01 | 蔡崇晓 | High-efficiency full hydraulic pile-driver |
| CN101812849A (en) * | 2010-04-02 | 2010-08-25 | 中国海洋石油总公司 | Offshore single-pile base structure and installation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147441A (en) * | 2012-12-03 | 2013-06-12 | 龙源电力集团股份有限公司 | Method for controlling construction verticality of large-sized single pile |
| CN104929125A (en) * | 2015-04-25 | 2015-09-23 | 王继忠 | Carrier pile construction equipment and carrier pile construction method |
| 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 |
| 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 |
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Application publication date: 20120328 |