CN111962543A - Rapid connection and separation process of pile stabilizing platform and mother ship - Google Patents
Rapid connection and separation process of pile stabilizing platform and mother ship Download PDFInfo
- Publication number
- CN111962543A CN111962543A CN202010804298.7A CN202010804298A CN111962543A CN 111962543 A CN111962543 A CN 111962543A CN 202010804298 A CN202010804298 A CN 202010804298A CN 111962543 A CN111962543 A CN 111962543A
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- Prior art keywords
- pile
- platform
- stabilizing platform
- mother ship
- supporting
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
- E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
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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
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/02—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by withdrawing
Abstract
A stable pile platform and a mother ship are quickly connected and separated, after the stable pile platform is processed, the stable pile platform is integrally hoisted on the mother ship, and the stable pile platform is connected with the mother ship through a suspension device; after the mother ship is accurately positioned, the pile stabilizing platform is connected with the mother ship, the supporting pile is inserted into the pile stabilizing platform, and the supporting pile and the pile stabilizing platform are preliminarily locked by utilizing the suspension device; after all the supporting piles are inserted into the pile stabilizing platform guide pipes, pile sinking is carried out in sequence; after all pile sinking of the support piles are in place, the pile stabilizing platform is lifted to be fixed with the support piles to form an independent and stable steel structure frame platform, then, the large-diameter steel pipe pile sinking is carried out, after pile sinking is completed, the pile stabilizing platform is hoisted to a mother ship, is quickly connected through a suspension device, moves along with the whole movement of the mother ship and shifts to the next machine position. When the large-diameter steel pipe pile is sunk, the pile stabilizing platform is quickly separated from the mother ship, and when the support pile is inserted, pulled and shifted, the pile stabilizing platform is quickly connected with the support pile, so that the construction efficiency is improved.
Description
Technical Field
The invention relates to a ship construction process for marine large-diameter pile foundation construction, in particular to a quick connection and separation process of a pile stabilizing platform and a mother ship.
Background
The single-pile foundation structure is the current mainstream offshore wind power foundation structure type in the world and the country, and has the advantages of short effective operation days on the sea, high engineering economy and the like compared with other foundation structures. A single pile foundation in China mostly adopts a transition flange-free structure, the verticality requirement of the single pile is extremely high, and pile stabilizing equipment is required to be adopted to assist pile sinking so as to meet the verticality requirement of the pile.
At present, the single-pile sinking construction technology is mainly divided into three types:
(1) shipborne pile gripper: the pile gripper is directly connected with a crane ship, does not need an auxiliary pile, is convenient to construct, is easily influenced by stormy waves and tidal waters, and is suitable for sea areas with smaller stormy waves and shallower water depth.
(2) The four-pile supported independent pile stabilizing platform comprises: during construction, a pile stabilizing platform is placed at the position of a fan, four steel pipe piles are driven into four pile positions of the platform, and after engineering piles are driven into the pile stabilizing platform, an auxiliary pile is pulled out, so that the pile stabilizing platform is suitable for the sea condition with shallow water level.
(3) Pile stabilizing platform of self-elevating support leg ship: the self-elevating support leg ship is provided with a positioning platform, but the self-elevating support leg ship in China has less resources, and meanwhile, the work efficiency of inserting and pulling legs of the platform ship is low.
At present, the wind power plant in China gradually develops from an intertidal zone to a shallow water area, the sea area of the wind power plant has large wind and wave, the water depth is gradually deepened, and the working difficulty is increased.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a quick connection and separation process of a pile stabilizing platform and a mother ship, which improves the construction efficiency and reduces the construction cost.
The technical problem to be solved by the invention is realized by the following technical scheme, the invention relates to a quick connection and separation process of a pile-stabilizing platform and a mother ship, which is characterized by comprising the following steps,
(1) initial connection of pile stabilizing platform and mother ship
The pile stabilizing platform is hoisted to a supporting platform at the tail of the mother ship, and is connected with the mother ship through a platform connecting device, so that the pile stabilizing platform becomes a set of special equipment of the pile inserting ship, is placed on the ship and works with the ship;
(2) support pile inserting pile
After the pile sinking position of the pile stabilizing platform is adjusted, sequentially sinking the support piles by using a vibration hammer, wherein the pile sinking depth is based on construction design data;
(3) fast separation of pile stabilizing platform and mother ship
After all the support piles are sunk in place, lifting and fixing a pile stabilizing platform to be fixed with the support piles to form an independent and stable steel structure frame platform; removing a connecting device of the pile stabilizing platform and the mother ship, lifting the pile stabilizing platform integrally by using a floating crane, accurately leveling, connecting the pile stabilizing platform with a supporting pile by using a suspension device, and tightly grabbing a gap between a pile stabilizing platform frame and the supporting pile by using a steel wedge block to form an independent pile stabilizing platform;
(4) steel pipe pile sinking pile
After the pile stabilizing platform is erected, pile sinking is carried out on the large-diameter steel pipe pile;
(5) fast connection of pile stabilizing platform and mother ship
After the pile sinking of the steel pipe pile is completed, a pile stabilizing platform is hoisted by using a floating crane, when the lifting hook is in an initial state of tightening, a steel wedge block is removed, a suspension device between a support pile and the pile stabilizing platform is dismantled, the pile stabilizing platform is integrally placed back to the support platform of the mother ship, and the pile stabilizing platform and the mother ship are quickly connected through a connecting device;
(6) pile pulling for supporting pile
The supporting pile is pulled out by a vibration hammer, and when the supporting pile is pulled out to be above the mud surface, the supporting pile and the pile stabilizing platform are fixed by a fixing pin;
(7) supporting pile, pile stabilizing platform and mother ship integral movement
And dragging the pile stabilizing platform and the support pile to the next machine position by the mother ship, pulling out the fixing pin after the positioning is finished, and repeating the steps.
The technical problem to be solved by the invention can also be realized by the following technical scheme that in the pile sinking process of the support piles in the step (2), the height difference of the tops of the four support piles is less than 30 cm.
The technical problem to be solved by the invention can also be realized by the following technical scheme that in the leveling process of the pile stabilizing platform in the step (3), the height difference of four corners of the pile stabilizing platform is not more than 10 mm.
Compared with the prior art, the invention realizes the rapid pile sinking of the large-diameter steel pipe pile and improves the construction efficiency of the large-diameter steel pipe pile through the rapid connection and separation between the pile stabilizing platform and the mother ship and between the pile stabilizing platform and the support column. When the method is adopted for sinking the large-diameter steel pipe pile, the pile stabilizing platform is quickly separated from the mother ship, and when the support pile is inserted, pulled and shifted, the quick connection between the pile stabilizing platform and the mother ship is completed, so that the method is convenient and quick to use.
Drawings
FIG. 1 is a process flow diagram of the process of the present invention;
FIG. 2 is a block diagram of a pile stabilization platform according to the present invention;
FIG. 3 is a block diagram of the upper platform of the present invention;
FIG. 4 is a block diagram of the lower platform of the present invention;
FIG. 5 is a block diagram of the mother ship according to the present invention;
fig. 6 is a top view of fig. 5.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings so that those skilled in the art can further understand the present invention without limiting the right of the present invention.
Referring to fig. 1-6, a fast connection and separation process of a pile stabilizing platform and a mother ship, which takes the offshore wind power engineering of a big-river and a village as an example, the diameter of a single pile is 5.5-6.6m, the length of the pile is 69-82 m, the weight is 613.5-899.3 t, and the verticality of the pile body is less than 3 per thousand. The process comprises the following steps of,
(1) pile stabilizing platform is connected with mother ship initially
After the pile stabilizing platform is machined, the pile stabilizing platform is transported to the front edge of a wharf by land, assembled into a whole, hoisted on a supporting platform of a mother ship, and connected with the mother ship through a suspension device, so that the pile stabilizing platform becomes a set of special equipment of a pile inserting ship, is placed on the ship and works along with the ship.
(2) Support pile inserting pile
After the mother ship is accurately positioned, the pile stabilizing platform is connected with the mother ship and aligned with the suspension devices, 4 supporting piles are respectively inserted into the pile stabilizing platform guide pipes, the supporting piles and the pile stabilizing platform are preliminarily locked by the suspension devices, and cable wind ropes are arranged at four corners in the hoisting process so as to reduce the swing amplitude and help the pile stabilizing platform to be adjusted in place. After all the supporting piles are inserted into the pile stabilizing platform guide pipe, pile sinking is carried out in sequence by using a vibration hammer, the pile sinking depth is based on construction design data, the tops of the four supporting piles are required to be approximately level, and the height difference is smaller than 30 cm.
(3) Fast separation of pile stabilizing platform and mother ship
After all the support piles are sunk in place, the pile stabilizing platform is lifted and fixed to be fixed with the support piles, and an independent and stable steel structure frame platform is formed. And removing the connecting devices of all the pile stabilizing platforms and the mother ship, and lifting the pile stabilizing platforms integrally by using the floating crane to perform accurate leveling, wherein the height difference of four corners is not more than 10 mm. And then, connecting the platform with the supporting pile through a suspension device, and tightly grabbing a gap between the pile stabilizing platform frame and the supporting pile by using a steel wedge block to form an independent pile stabilizing platform.
(4) Steel pipe pile sinking pile
After the pile stabilizing platform is erected, pile sinking of the large-diameter steel pipe pile is carried out, and the pile sinking process can adopt the process steps disclosed in the prior art;
(5) fast connection of pile stabilizing platform and mother ship
After the steel pipe pile sinking is finished, a pile stabilizing platform is hoisted by using a floating crane, and when the lifting hook is in an initial state of tightening, a steel wedge block is removed, and a supporting pile and platform connecting device is removed; and then the pile stabilizing platform is integrally lowered onto a supporting platform of a deck of the mother ship, and the pile stabilizing platform and the mother ship are quickly connected through a suspension device.
(6) Pile pulling for supporting pile
The supporting pile is removed by a vibration hammer, when the supporting pile is pulled out to be above the mud surface, the supporting pile and the platform are fixed by a fixing pin,
(7) supporting pile, pile stabilizing platform and mother ship integral movement
And (3) dragging the pile stabilizing platform to move to the next machine position by the mother ship, pulling out the fixing pin after positioning is finished, sinking the pile by using a vibration hammer, and repeating the steps.
The pile stabilizing platform adopted by the invention has the structure that a platform main body is arranged, an encircling cavity of an engineering pile 3 is arranged on the platform main body, an engineering pile inlet is arranged on one side of the encircling cavity, the encircling cavity is arranged in a U shape, a plurality of supporting piles 6 are arranged on the periphery of the platform main body, a supporting pile sleeve 4 is arranged on the platform main body, a supporting pile fixing device 11 is arranged on the supporting pile sleeve 4, a fastening device connected with a barge and a lifting device used for lifting the platform main body are arranged on the platform main body, the fastening device is ship fastening equipment, and the lifting device is any device capable of realizing a lifting function disclosed by the prior art;
the platform main body is provided with an upper platform and a lower platform, the upper platform 1 is fixedly connected with the lower platform 2 through a support pile sleeve, pile holding devices matched with engineering piles 3 are respectively arranged on the upper platform 1 and the lower platform 2 at the surrounding cavity, the height of the interlayer between the upper platform and the lower platform is 8000mm, the upper platform and the lower platform are fixedly connected by 4 support pile sleeves 4 with the inner diameter phi of 2500mm, the front-back and left-right distances between the centers of the 4 support pile sleeves 4 are 15600mm respectively, and 4 support piles 6 with the outer diameter phi of 2420mm are inserted into the support pile sleeves 4;
the pile embracing device is at least provided with three pile embracing cylinders 13, the pile embracing cylinders 13 are uniformly arranged along the circumferential direction of an embracing cavity, piston rods of the pile embracing cylinders 13 are arranged towards the center of the embracing cavity, the end parts of the piston rods of the pile embracing cylinders 13 are provided with rollers which are in rolling fit with the engineering pile, the pile embracing cylinders 13 are provided with four pile embracing cylinders, every two pile embracing cylinders are in one group, the two pile embracing cylinders 13 in the same group are symmetrically arranged along the center of the embracing cavity, and the pile embracing cylinders are 200 t;
the platform main body is of a steel pipe frame structure and provides a basic supporting function for the whole control platform;
the number of pile embracing devices is 8, the upper platform and the lower platform are respectively provided with 4 pile embracing devices, the pile embracing devices are arranged around the center of an engineering pile 3 in a 45-degree angle mode, the maximum thrust of each pile is larger than 200t, the pile embracing devices directly act on a single pile foundation and restrain the verticality of the single pile foundation in the whole pile sinking process, the hydraulic cylinders can be freely contracted, the length of the pile embracing cylinders 13 on two sides of an inlet of the engineering pile is adjusted according to the diameter of the engineering pile, the pile embracing cylinders 13 on two sides of the inlet of the engineering pile are arranged on a platform main body through a rotating mechanism, the rest pile embracing cylinders 13 are fixed on the platform main body, the rotating mechanism comprises a rotating seat and a driving cylinder 14, the cylinder body of each pile embracing cylinder 13 is fixed on;
the support pile 6 adopts steel pipe piles with the diameter of more than phi 2m to support the whole pile stabilizing platform and external load, and the support pile fixing device 11 is used for connecting the support pile with the platform main body; support stake fixing device 11 including adorning the fixing base on supporting stake sleeve 4, all be equipped with the otic placode on fixing base and the support stake, be equipped with the turn buckle between the otic placode of fixing base and the otic placode of supporting the stake.
The middle part of the lower platform 2 is provided with control rooms 1 and 9, and the control room 9 is internally provided with a control console, a hydraulic system control device, an air conditioner, a seat, a door, a window and the like; a power station and a power distribution room are arranged beside the control room 9, and the power station is provided with necessary safety valves, overflow valves, power control valves, air-cooled radiators, filters, pressure gauges, oil tanks and other accessories and a starting electric box; the lower platform 2 is provided with a steel inclined ladder 10 leading to the upper platform, and the inclined ladder 10 is connected with the platform main body by bolts. The two sides and the end part of the lower platform 2 are provided with steel steps 12. An aluminum alloy movable ladder 10 with the length of about 12m is arranged between the lower platform 2 and the positioning barge; a tool room 8 is arranged below the inclined ladder of the lower platform 2; the steel fixed railings 7 are arranged on the periphery of the lower platform and the upper platform, the height of the railings is about 1100mm, and the telescopic movable pedals 12 made of aluminum alloy are arranged on the two sides of the engineering pile inlet and the platform main body surrounding the periphery of the cavity and used for measuring the verticality when the diameter of the engineering pile changes.
The mother ship comprises a ship body 15, wherein a supporting platform 17 of a pile stabilizing platform 18 is respectively arranged on the left side and the right side of the tail part of the ship body 15, the supporting platform 17 is fixed at the tail part of the ship body 15 through a platform supporting seat, and a platform connecting device 16 for fixing the pile stabilizing platform 18 is arranged on each supporting platform 17; the supporting platform 17 is of a steel truss structure; a U-shaped cavity for placing a pile stabilizing platform 18 is formed between two supporting platforms 17 at the tail part of the ship body 15 and the ship body, a reinforcing module is fixed in the ship body connected with a platform supporting seat, and the reinforcing module can be a reinforcing plate, a reinforcing rib or other devices capable of reinforcing the structure of the ship body; the platform connecting devices 16 on the two supporting platforms 17 at the tail part of the ship body 15 are symmetrically arranged, and the platform connecting devices 16 can adopt any connecting device which is disclosed in the prior art and can realize the fixed connection between the pile stabilizing platform 18 and the supporting platforms, for example, adopt the connecting device; the thickness of the supporting platform 17 becomes thinner from inside to outside along the long axis direction of the ship body; the tail end of the supporting platform 17 is provided with an anchor, the anchor is connected with the supporting platform 17 through an anchor chain, and an anchor bracket is arranged on the supporting platform 17; the two sides of the ship body are provided with tail fins 19, and the tail fins 19 are arranged on the ship body through connecting outer plates.
The ship body can adopt a non-self-propelled barge, a landing leg ship or a semi-submerged barge, and is modified to be suitable for carrying a pile stabilizing platform, wherein the modified contents comprise:
(1) a supporting platform is respectively added on the left side and the right side of the tail of the ship body;
(2) the interior of the hull in the area connected with the platform support seat is properly reinforced;
(3) the original anchoring equipment such as a tail anchor, an anchor bracket and the like is moved to the tail end of the platform supporting seat, and the length of the anchor chain is properly increased;
(4) and cutting off the whole structure of the original port and starboard tail fins, moving the tail fins into the ship after cutting off, and welding the tail fins with the outer plate.
When the mother ship disclosed by the invention is used for carrying the pile stabilizing platform, the pile stabilizing platform can be separated from the mother ship in the pile sinking process of the large-diameter steel pipe pile, and the pile stabilizing platform is connected with the mother ship when a support pile is plugged and moved, so that the connection mode between the pile stabilizing platform and the mother ship is more flexible, the pile sinking position of the large-diameter steel pipe pile can be accurately positioned, the absolute position deviation of the large-diameter steel pipe pile is realized to meet the design requirement, and the construction efficiency is improved.
The above embodiments are only for more clearly illustrating the technical solutions of the present invention, and the scope of the present invention includes but is not limited to the above embodiments, and any suitable changes or substitutions that are consistent with the claims of the present invention and are made by those skilled in the art shown should fall within the scope of the present invention.
Claims (3)
1. The utility model provides a quick connection and separation technology of steady stake platform and mother ship which characterized in that: the process comprises the following steps of,
(1) initial connection of pile stabilizing platform and mother ship
The pile stabilizing platform is hoisted to a supporting platform at the tail of the mother ship, and is connected with the mother ship through a platform connecting device, so that the pile stabilizing platform becomes a set of special equipment of the pile inserting ship, is placed on the ship and works with the ship;
(2) support pile inserting pile
After the pile sinking position of the pile stabilizing platform is adjusted, the mother ship is accurately positioned, 4 supporting piles are respectively inserted into supporting pile sleeves at four corners of the pile stabilizing platform, the supporting piles and the pile stabilizing platform are preliminarily locked by utilizing a suspension device, cable wind ropes are arranged at the four corners of the pile stabilizing platform in the hoisting process so as to reduce the swing amplitude of the pile stabilizing platform and help the pile stabilizing platform to be adjusted in position, and after the pile sinking position of the pile stabilizing platform is adjusted, the supporting piles are sequentially sunk by utilizing a vibration hammer;
(3) fast separation of pile stabilizing platform and mother ship
After all pile sinking of the supporting piles are in place, removing a connecting device of the pile stabilizing platform and the mother ship, lifting the pile stabilizing platform integrally by using a floating crane, accurately leveling, connecting the pile stabilizing platform with the supporting piles through a suspension device, and tightly lifting a gap between the pile stabilizing platform frame and the supporting piles by using a steel wedge block to form an independent pile stabilizing platform;
(4) steel pipe pile sinking pile
After the pile stabilizing platform is erected, pile sinking is carried out on the large-diameter steel pipe pile;
(5) fast connection of pile stabilizing platform and mother ship
After the pile sinking of the steel pipe pile is completed, a pile stabilizing platform is hoisted by using a floating crane, when the lifting hook is in an initial state of tightening, a steel wedge block is removed, a suspension device between a support pile and the pile stabilizing platform is dismantled, the pile stabilizing platform is integrally placed back to the support platform of the mother ship, and the pile stabilizing platform and the mother ship are quickly connected through a connecting device;
(6) pile pulling for supporting pile
The supporting pile is pulled out by a vibration hammer, and when the supporting pile is pulled out to be above the mud surface, the supporting pile and the pile stabilizing platform are fixed by a fixing pin;
(7) supporting pile, pile stabilizing platform and mother ship integral movement
And dragging the pile stabilizing platform and the support pile to the next machine position by the mother ship, pulling out the fixing pin after the positioning is finished, and repeating the steps.
2. The quick connect and disconnect process of claim 1, wherein: and (3) in the pile sinking process of the support piles in the step (2), the height difference of the tops of the four support piles is less than 30 cm.
3. The quick connect and disconnect process of claim 1, wherein: and (3) in the leveling process of the pile stabilizing platform, the height difference of four corners of the pile stabilizing platform is not more than 10 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010804298.7A CN111962543A (en) | 2020-08-12 | 2020-08-12 | Rapid connection and separation process of pile stabilizing platform and mother ship |
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| CN202010804298.7A CN111962543A (en) | 2020-08-12 | 2020-08-12 | Rapid connection and separation process of pile stabilizing platform and mother ship |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| US20180340312A1 (en) * | 2017-05-25 | 2018-11-29 | Powerchina Huadong Engineering Corporation Limited | Offshore non-driven-in large-diameter monopile foundation structure and constryction method |
| 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 |
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| AU2005250448A1 (en) * | 2004-05-28 | 2005-12-15 | Deepwater Marine Technology L.L.C. | Ballasting offshore platform with buoy assistance |
| CN102041813A (en) * | 2010-12-24 | 2011-05-04 | 中国水电顾问集团华东勘测设计研究院 | Offshore wind generator single pile base structure with stabilizer fin |
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| 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 |
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Application publication date: 20201120 |