CN112627176A - Construction method of large-diameter single-pile stabilizing platform - Google Patents
Construction method of large-diameter single-pile stabilizing platform Download PDFInfo
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- CN112627176A CN112627176A CN202011399112.0A CN202011399112A CN112627176A CN 112627176 A CN112627176 A CN 112627176A CN 202011399112 A CN202011399112 A CN 202011399112A CN 112627176 A CN112627176 A CN 112627176A
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- stabilizing platform
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/04—Guide devices; Guide frames
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
- E02D7/16—Scaffolds or supports for drivers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/18—Placing by vibrating
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0039—Methods for placing the offshore structure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0039—Methods for placing the offshore structure
- E02B2017/0047—Methods for placing the offshore structure using a barge
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Mechanical Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a construction method of a large-diameter single-pile stable pile platform, which comprises the following steps: the method comprises the following steps: hoisting and positioning the pile stabilizing platform, and hoisting the pile stabilizing platform to a predetermined position coordinate of a construction machine by a crane ship; step two: fixing and adjusting the pile stabilizing platform, adjusting the central coordinate of the pile stabilizing platform and the coordinate of the position of the construction machine within an allowable deviation range, sinking and fixing the pile stabilizing platform, adjusting the levelness of the pile stabilizing platform, and welding and fixing the pile stabilizing platform; step three: hoisting and sinking the single pile body, namely hoisting the single pile body into a pile stabilizing platform, vertically adjusting the verticality of the single pile body by the pile stabilizing platform, and sinking the single pile body into the seabed; step four: and (4) dismantling and hoisting the pile stabilizing platform, and fixing and dismantling the auxiliary piles around the pile stabilizing platform and hoisting the whole pile stabilizing platform. The vertical precision of the single pile body is strictly controlled in the whole construction process, vertical pile sinking is guaranteed, construction quality is guaranteed to be qualified, and construction difficulty is reduced, so that engineering progress is accelerated.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the technical field of wind power engineering construction, and particularly relates to a construction method of a large-diameter single-pile stabilizing platform.
[ background of the invention ]
The offshore wind energy is rich, the wind energy is utilized to generate electricity, the electricity is provided for surrounding cities, the electricity utilization pressure of the cities or remote areas can be reduced, the size of the power generation windmill is large, a foundation which is hard enough is required to be built on land, and the construction difficulty is greatly influenced and is increased due to the complex ground conditions on the seabed and loose geology and the complex and changeable offshore environment and climate during offshore construction.
The platform foundation needs to be fixed after the pile body is driven into the seabed, the pile body needs to be guaranteed to be hammered into the seabed on the vertical foundation during pile driving, and due to the fact that the pile body is influenced by more factors during seabed construction, the construction method is needed to reduce construction difficulty and guarantee pile sinking precision to guarantee construction quality.
[ summary of the invention ]
In order to solve the existing problems in the background technology, the invention provides a construction method of a large-diameter single-pile stabilization platform, which integrates the stable construction of the pile stabilization platform, pile sinking and the dismantling and hoisting of the pile stabilization platform into a whole construction process, ensures the reliable precision of the pile sinking, improves the construction quality and reduces the construction difficulty.
The invention adopts the following technical scheme:
a construction method of a large-diameter single-pile-stabilizing platform comprises the following steps:
the method comprises the following steps: hoisting and positioning a pile stabilizing platform, and hoisting the pile stabilizing platform to a predetermined position coordinate of a construction machine by a crane ship;
step two: fixing and adjusting a pile stabilizing platform, adjusting the central coordinate of the pile stabilizing platform and the coordinate of a construction machine position within an allowable deviation range, sinking and fixing the pile stabilizing platform, adjusting the levelness of the pile stabilizing platform, and welding and fixing the pile stabilizing platform;
step three: hoisting and sinking the single pile body, namely hoisting the single pile body into a pile stabilizing platform, vertically adjusting the verticality of the single pile body by the pile stabilizing platform, and sinking the single pile body into the seabed;
step four: and (4) dismantling and hoisting the pile stabilizing platform, and fixing and dismantling the auxiliary piles around the pile stabilizing platform and hoisting the whole pile stabilizing platform.
Furthermore, in the first step, the coordinates of the position of the construction machine are determined in advance through a positioning instrument, a lifting hook on the crane is connected to the peripheral lifting points of the pile stabilizing platform through four lifting ropes, the four lifting ropes are adjusted to enable the pile stabilizing platform to be in a vertical state, and a positioner on the crane monitors the central coordinates of the pile stabilizing platform and hoists the pile stabilizing platform to the coordinates of the position of the construction machine.
Further, in the second step, the position of the pile stabilizing platform is moved to control the center coordinate of the pile stabilizing platform and the coordinate of the position of the construction machine to be within a designed allowable deviation range;
the pile stabilizing platform sinks to the seabed, firstly, an auxiliary pile on the highest side of the pile stabilizing platform is inserted and sunk to the seabed through a vibration hammer, the pile top height of a first auxiliary pile is determined to be used as an elevation reference, then, the auxiliary pile at the opposite angle of the first auxiliary pile is inserted and sunk to the elevation reference, the other two auxiliary piles are sequentially inserted and sunk to the elevation reference, and a level instrument is adopted to measure the levelness and the elevation of the pile stabilizing platform to be within an allowable range;
the auxiliary piles are externally welded and fixed with the platform frame body on the pile stabilizing platform through connecting plates, the connecting plates are at least eight and symmetrically welded and distributed about the axis, and the welding sequence is welded according to the sequence of the auxiliary piles in opposite angles.
Further, in the third step, the arm is opened on the pile stabilizing platform, the single pile body is vertically lifted by the crane ship and moved to the arm, the arm is folded to measure the verticality of the single pile body, the single pile body is adjusted to a vertical position through the adjusting jack on the arm, and then the single pile body is sunk into the seabed through the pile hammer.
Furthermore, in the fourth step, after pile sinking is completed, welding seams of the connecting plate are cut, the connecting plate is taken out, the four auxiliary piles are sequentially vibrated through the vibration hammer, the auxiliary piles are gradually lifted to be separated from the seabed for fixing, the auxiliary piles are fixed on the platform frame body through bolts, and finally the stable pile platform is integrally lifted by the crane ship.
The invention has the following beneficial effects:
the method comprises the steps that a crane ship lifts a pile stabilizing platform to a position coordinate of a construction machine determined by a positioning instrument in advance, a vibration hammer fixes the pile stabilizing platform onto a seabed, the levelness of the pile stabilizing platform is measured and adjusted to be horizontal, pile sinking preparation is made before pile sinking is conducted on the pile stabilizing platform in a welding and stabilizing mode, the crane ship lifts a single pile body in the pile stabilizing platform, a jack is adjusted to adjust the verticality of the single pile body to be vertical, pile sinking is conducted through a pile driving hammer subsequently, the pile stabilizing platform is detached and lifted out of the seabed to complete construction, the vertical precision of the single pile body is strictly controlled in the whole construction process, vertical pile sinking is guaranteed, construction quality is guaranteed to be qualified, and construction difficulty is reduced, so that engineering progress is accelerated.
[ description of the drawings ]
FIG. 1 is a schematic structural view of a pile stabilizing platform during hoisting and positioning according to a first step of the invention;
FIG. 2 is a schematic structural diagram of the second pile stabilizing platform during fixing and adjusting;
fig. 3 is a schematic structural diagram of the single pile body hoisting arm in the third step when the arm is opened;
FIG. 4 is a schematic structural diagram of the single pile body hoisting arm in the third step when the single pile body hoisting arm is folded;
FIG. 5 is a schematic structural view of a single pile body during pile sinking;
fig. 6 is a schematic structural diagram of the pile stabilizing platform in step four during lifting.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.
The invention discloses a construction method of a large-diameter single-pile stable pile platform, which comprises the following steps:
as shown in fig. 1, step one: hoisting and positioning the pile stabilizing platform 1, and hoisting the pile stabilizing platform 1 to a predetermined position coordinate of a construction machine by a crane ship 2; in the first step, the coordinates of the construction machine are determined in advance through a positioning instrument, a lifting hook on a crane ship 2 is respectively connected to lifting points around the pile stabilizing platform 1 through four lifting ropes, the four lifting ropes are adjusted to enable the pile stabilizing platform 1 to be in a vertical state, a positioner on the crane ship 2 monitors the central coordinates of the pile stabilizing platform 1 and hoists to the coordinates of the construction machine, the crane arm is slowly put down to sink into the seabed, the speed is not too high, and large position errors caused by too large shaking range are avoided.
As shown in fig. 2, step two: steady pile platform 1's fixing and adjustment, adjustment steady pile platform 1 central coordinate and construction machine position coordinate are in the deviation scope of permission, later, will steady pile platform 1 sinks fixedly, and is right through vibratory hammer 3 the supplementary stake 4 of the highest side is inserted and is sunk in the seabed on steady pile platform 1 to confirm 4 pile tops of first root supplementary stake height as the elevation benchmark, insert to the elevation benchmark again the supplementary stake 4 of 4 diagonal angles of first root supplementary stake afterwards, insert to the elevation benchmark to all the other two supplementary stakes 4 in proper order, adopt the level instrument to measure steady pile platform 1 levelness and elevation are in the permission within range, the adjustment steady pile platform 1 levelness is in qualified construction range, accomplishes steady pile platform 1 and fixes on the seabed.
Furthermore, it is necessary to fix the pile stabilizing platform 1 itself, and weld the outside of the auxiliary piles 4 to the platform frame body 6 on the pile stabilizing platform 1 through the connecting plates 5, the connecting plates 5 are at least eight and are symmetrically welded and distributed about the axis, the connecting plates 5 are symmetrically to make the auxiliary piles 4 balanced and stressed and fixed, and keep the vertical stressed state, and it is necessary to explain that the welding sequence is welded according to the sequence of the auxiliary piles 4 which are diagonal, so that the procedures of self-fixing and fixing the pile stabilizing platform 1 on the seabed are completed, the steps are simple and convenient, and the subsequent pile sinking construction is facilitated.
As shown in fig. 3, 4 and 5, the third step is: hoisting and pile sinking of single pile body 7 will single pile body 7 hang extremely in the steady pile platform 1, hold arm 8 and open on the steady pile platform 1, the vertical single pile body 7 that lifts of crane ship 2 removes and holds arm 8 department, hold arm 8 and fold, measure the straightness that hangs down at single pile body 7 place, through holding the adjustment jack on the arm 8 and adjusting single pile body 7 to vertical position, during rethread pile hammer 9 sinks single pile body 7 into the seabed, accomplish the pile sinking process according to this step in proper order.
Step four as shown in fig. 6: and (3) dismantling and hoisting the pile stabilizing platform 1, fixing and dismantling the auxiliary piles 4 around the pile stabilizing platform 1 and hoisting the pile stabilizing platform integrally, specifically, after pile sinking in the third step is completed, cutting welding seams of the connecting plate 5, taking out the connecting plate 5, sequentially vibrating the four auxiliary piles 4 through the vibration hammer 3, gradually lifting the auxiliary piles 4 to be separated from the fixing on the seabed, fixing the auxiliary piles 4 on the platform frame body 6 through bolts, and finally hoisting the pile stabilizing platform 1 by the crane ship 2 integrally.
It can be seen that the construction method of the invention integrates a plurality of procedures of construction, pile sinking, dismantling and the like of the pile stabilizing platform 1, the verticality of the single pile body 7 is adjusted in time during pile sinking, the pile sinking quality is ensured, the construction process is reliable and has lower difficulty, and the project progress is accelerated.
The invention has the advantages that:
the method comprises the steps that a crane ship lifts a pile stabilizing platform to a position coordinate of a construction machine determined by a positioning instrument in advance, a vibration hammer fixes the pile stabilizing platform onto a seabed, the levelness of the pile stabilizing platform is measured and adjusted to be horizontal, pile sinking preparation is made before pile sinking is conducted on the pile stabilizing platform in a welding and stabilizing mode, the crane ship lifts a single pile body in the pile stabilizing platform, a jack is adjusted to adjust the verticality of the single pile body to be vertical, pile sinking is conducted through a pile driving hammer subsequently, the pile stabilizing platform is detached and lifted out of the seabed to complete construction, the vertical precision of the single pile body is strictly controlled in the whole construction process, vertical pile sinking is guaranteed, construction quality is guaranteed to be qualified, and construction difficulty is reduced, so that engineering progress is accelerated.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (5)
1. A construction method of a large-diameter single-pile-stabilizing platform is characterized by comprising the following steps:
the method comprises the following steps: hoisting and positioning a pile stabilizing platform, and hoisting the pile stabilizing platform to a predetermined position coordinate of a construction machine by a crane ship;
step two: fixing and adjusting a pile stabilizing platform, adjusting the central coordinate of the pile stabilizing platform and the coordinate of a construction machine position within an allowable deviation range, sinking and fixing the pile stabilizing platform, adjusting the levelness of the pile stabilizing platform, and welding and fixing the pile stabilizing platform;
step three: hoisting and sinking the single pile body, namely hoisting the single pile body into a pile stabilizing platform, vertically adjusting the verticality of the single pile body by the pile stabilizing platform, and sinking the single pile body into the seabed;
step four: and (4) dismantling and hoisting the pile stabilizing platform, and fixing and dismantling the auxiliary piles around the pile stabilizing platform and hoisting the whole pile stabilizing platform.
2. The construction method of a large-diameter single-pile stabilized platform according to claim 1, wherein in the first step, the coordinates of the position of the construction machine are determined in advance by a positioning instrument, a lifting hook on a crane is connected to the lifting points around the stabilized platform through four lifting ropes respectively, the four lifting ropes are adjusted to enable the stabilized platform to be in a vertical state, and a positioner on the crane monitors the central coordinates of the stabilized platform and lifts the stabilized platform to the coordinates of the position of the construction machine.
3. The construction method of a large-diameter single-pile stabilizing platform as claimed in claim 1, wherein in the second step, the position of the pile stabilizing platform is moved to control the center coordinates of the pile stabilizing platform and the coordinates of the position of the construction machine to be within the allowable deviation range of design;
the pile stabilizing platform sinks to the seabed, firstly, an auxiliary pile on the highest side of the pile stabilizing platform is inserted and sunk to the seabed through a vibration hammer, the pile top height of a first auxiliary pile is determined to be used as an elevation reference, then, the auxiliary pile at the opposite angle of the first auxiliary pile is inserted and sunk to the elevation reference, the other two auxiliary piles are sequentially inserted and sunk to the elevation reference, and a level instrument is adopted to measure the levelness and the elevation of the pile stabilizing platform to be within an allowable range;
the auxiliary piles are externally welded and fixed with the platform frame body on the pile stabilizing platform through connecting plates, the connecting plates are at least eight and symmetrically welded and distributed about the axis, and the welding sequence is welded according to the sequence of the auxiliary piles in opposite angles.
4. The construction method of the large-diameter single-pile stabilizing platform according to claim 1, characterized in that in the third step, the arms on the pile stabilizing platform are opened, the crane ship vertically lifts the single pile body and moves to the arms, the arms are closed, the verticality of the single pile body is measured, the single pile body is adjusted to a vertical position through the adjusting jacks on the arms, and then the single pile body is sunk into the seabed through the pile driving hammer.
5. The construction method of a large-diameter single-pile stabilized pile platform as claimed in claim 3, wherein in the fourth step, after pile sinking is completed, the welding seam of the connecting plate is cut, the connecting plate is taken out, the four auxiliary piles are vibrated in sequence by the vibration hammer, the auxiliary piles are gradually lifted to be separated from the fixing on the seabed, the auxiliary piles are fixed on the platform frame body by the bolts, and finally the stabilized pile platform is integrally lifted by the crane ship.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011399112.0A CN112627176A (en) | 2020-12-03 | 2020-12-03 | Construction method of large-diameter single-pile stabilizing platform |
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| CN202011399112.0A CN112627176A (en) | 2020-12-03 | 2020-12-03 | Construction method of large-diameter single-pile stabilizing platform |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090470A (en) * | 2021-04-13 | 2021-07-09 | 保利长大工程有限公司 | Installation method of offshore wind turbine |
| CN114411800A (en) * | 2022-01-17 | 2022-04-29 | 中天科技集团海洋工程有限公司 | Steel pipe pile construction system and technology based on floating pile-stabilizing platform |
| CN115977086A (en) * | 2023-01-09 | 2023-04-18 | 保利长大工程有限公司 | Construction method for dragging mud into closure opening at bottom of large-diameter single-pile foundation pile |
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| CN109629568A (en) * | 2018-12-30 | 2019-04-16 | 中交第三航务工程局有限公司江苏分公司 | The process for sinking of the steady stake platform of offshore wind farm jacket foundation steel pipe pile floating |
| CN109989416A (en) * | 2019-05-20 | 2019-07-09 | 华电重工股份有限公司 | Steady stake platform and construction method for offshore wind farm single-pile foundation piling construction |
| CN111139830A (en) * | 2020-01-21 | 2020-05-12 | 中交第三航务工程局有限公司江苏分公司 | Seat bottom pile inserting type single pile stabilizing frame and pile sinking method |
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2020
- 2020-12-03 CN CN202011399112.0A patent/CN112627176A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629568A (en) * | 2018-12-30 | 2019-04-16 | 中交第三航务工程局有限公司江苏分公司 | The process for sinking of the steady stake platform of offshore wind farm jacket foundation steel pipe pile floating |
| CN109989416A (en) * | 2019-05-20 | 2019-07-09 | 华电重工股份有限公司 | Steady stake platform and construction method for offshore wind farm single-pile foundation piling construction |
| CN111139830A (en) * | 2020-01-21 | 2020-05-12 | 中交第三航务工程局有限公司江苏分公司 | Seat bottom pile inserting type single pile stabilizing frame and pile sinking method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090470A (en) * | 2021-04-13 | 2021-07-09 | 保利长大工程有限公司 | Installation method of offshore wind turbine |
| CN113090470B (en) * | 2021-04-13 | 2022-07-12 | 保利长大工程有限公司 | Installation method of offshore wind turbine |
| CN114411800A (en) * | 2022-01-17 | 2022-04-29 | 中天科技集团海洋工程有限公司 | Steel pipe pile construction system and technology based on floating pile-stabilizing platform |
| CN114411800B (en) * | 2022-01-17 | 2023-11-10 | 中天科技集团海洋工程有限公司 | Steel pipe pile construction system and process based on floating pile stabilizing platform |
| CN115977086A (en) * | 2023-01-09 | 2023-04-18 | 保利长大工程有限公司 | Construction method for dragging mud into closure opening at bottom of large-diameter single-pile foundation pile |
| CN115977086B (en) * | 2023-01-09 | 2024-01-16 | 保利长大工程有限公司 | Construction method for large-diameter single-pile foundation pile bottom mud dragging and tapping |
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Application publication date: 20210409 |