CN105804077B - A kind of pile extracting method of jack-up unit - Google Patents
A kind of pile extracting method of jack-up unit Download PDFInfo
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- CN105804077B CN105804077B CN201610181689.1A CN201610181689A CN105804077B CN 105804077 B CN105804077 B CN 105804077B CN 201610181689 A CN201610181689 A CN 201610181689A CN 105804077 B CN105804077 B CN 105804077B
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- spud leg
- shoe
- jack
- unit
- pile
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Classifications
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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
-
- 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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- 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)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of pile extracting methods of jack-up unit, belong to self-elevating ocean platform field.The method includes：By the way that controllable detachable member is controlled to detach spud leg with shoe；Pile pulling is carried out to the spud leg after separation, to pull up spud leg.The present invention pulls up spud leg after being detached by spud leg with shoe, the pulling force very little that spud leg is subject at this time, the pile pulling process for making platform is easily and quick, pile extracting method is simply direct, operating process links up, and simplifies platform pile pulling flow, reduces the pile pulling time, increase the effective time of platform, and pile pulling mode safety；In addition, eliminate it is complicated, expensive rush a system, reduce the construction expense of jack-up unit.
Description
Technical field
The present invention relates to self-elevating ocean platform field, more particularly to a kind of pile extracting method of jack-up unit.
Background technology
Spud leg is stretched into seabed by jack-up unit by the jacking system of platform, and spud leg is connected in shoe, passes through spud leg
Support with shoe causes platform to leave sea, so as to provide a stable workbench for ocean operation.
After the completion of one place work, needing to pull up spud leg could navigate by water to next job site jack-up unit.
At present, the pile extracting method of domestic and international jack-up unit is to reduce platform to sea level by the buoyancy generation pair after platform drinking water
Spud leg and the pile pulling power of shoe (spud leg, shoe weld together), while rushed by strength spray is carried out to shoe bottom, reduce sea
Bed mud soil is to the adsorption capacity of shoe.
Due to jack-up unit in use, into mud is too deep or the situation of ocean bottom soil consolidation, making often occurs in spud leg
It is extremely big to the adsorption capacity and resistance of shoe into bottom silt or soil.It is slow using prior art progress pile pulling process, usually
One or two week is needed, sometimes even more than 10 weeks, pile pulling process was time-consuming and laborious；In addition, this pile pulling mode is also possible to cause
Platform topples, and causes great life and property loss.
Invention content
In order to solve the problems, such as that the prior art is time-consuming and laborious in jack-up unit pile pulling process, the present invention provides one kind certainly
The pile extracting method of lift-type platform, the technical solution are as follows：
An embodiment of the present invention provides a kind of pile extracting method of jack-up unit, the method is suitable for using controllable removable
Spud leg and the shoe of the jack-up unit of component connection are unloaded, the method includes：
By the way that the controllable detachable member is controlled to detach the spud leg with the shoe；
Pile pulling is carried out to the spud leg after separation, to pull up the spud leg；
After the spud leg is pulled up, positioning of casting anchor is carried out to the jack-up unit；
The shoe is connected on the boom hoisting of the jack-up unit by the rope chain reserved in the shoe；
The shoe is sling by the boom hoisting；
After the shoe is sling, the shoe is hung to the spud leg lower position；
The shoe is docked with the spud leg；
The shoe is locked with the spud leg using the controllable detachable member；
Wherein, it is described that the shoe is hung to the spud leg lower position, including：
The rope chain is controlled to be evenly distributed on the surrounding of the spud leg；
The equal length of each rope chain is controlled, so that the shoe is in the spud leg lower position.
In a kind of realization method of the present invention, the controllable detachable member includes bolt, spring and electromagnet, described
The outer wall of spud leg bottom is equipped with stepped hole, and the shoe inner wall is equipped with annular groove, and the stepped hole includes the small-bore of both ends
Section and intermediate heavy caliber section, the spring are arranged in the heavy caliber section, and the electromagnet is arranged on the inside of the spud leg
Small-bore section in, the bolt be multi-diameter shaft, the large scale part of the multi-diameter shaft be arranged in the heavy caliber section and with
The spring is connected, and the small size part of the multi-diameter shaft is extended partially into small-bore on the outside of the spud leg by the large scale
Duan Zhong, when the electromagnet not it is electric when, the bolt stretches out the stepped hole and is inserted into the annular groove, when the electromagnet
When obtaining electric, described in the latch retract in stepped hole.
The present invention another realization method in, it is described by control the controllable detachable member by the spud leg with
The shoe is detached, including：
The jack-up unit is down to sea level；
The electromagnet is controlled to obtain electric, the bolt is driven to be extracted from the annular groove of the shoe；
The shoe and the spud leg are separated.
In another realization method of the present invention, the spud leg after described pair of separation carries out pile pulling, including：
The jack-up unit is reduced, increases the jack-up unit draft, until the spud leg is extracted into mud layer,
Then the spud leg of extraction is fixed on the jack-up unit.
In another realization method of the present invention, the pile extracting method further includes：
After the spud leg is pulled up, spare shoe is installed on the spud leg；
It is locked using the controllable detachable member.
In another realization method of the present invention, the rope chain is cable.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is：
Spud leg pulls up spud leg after being detached with shoe, and the pulling force very little that spud leg is subject at this time makes the pile pulling process of platform more
Easily and quickly, pile extracting method is simply direct, and operating process links up, and simplifies platform pile pulling flow, reduces the pile pulling time, increases
The effective time of platform, and pile pulling mode safety are added；In addition, eliminate it is complicated, expensive rush a system, make jack up
The construction expense of platform is reduced.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the flow chart of pile extracting method provided in an embodiment of the present invention；
Fig. 2 is the structure diagram of shoe provided in an embodiment of the present invention and spud leg connection mode；
Fig. 3 is structure diagram when mud layer is inserted into the spud leg of jack-up unit and shoe in the embodiment of the present invention；
Structure diagram when Fig. 4 is jack-up unit extraction spud leg in the embodiment of the present invention；
Structure diagram when Fig. 5 is jack-up unit lifting shoe in the embodiment of the present invention；
Fig. 6 is structure diagram when jack-up unit spud leg is docked with shoe in the embodiment of the present invention.
Wherein, the meaning of label is as follows in attached drawing 1-6：1- spud legs, 2- shoes, 3- jack-up units, 4- mud layers, 5- ropes
Chain, 6- electromagnet, 7- springs, 8- bolts, 9- annular grooves, 10- anchor chains, 11- stepped holes.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is the flow chart of the pile extracting method of jack-up unit provided in an embodiment of the present invention, and this method is suitable for using
The spud leg of the jack-up unit of controllable detachable member connection and shoe, referring to Fig. 1, this method flow includes：
Step 101：It will be using the spud leg of the jack-up unit of controllable detachable member connection and shoe separation.
In embodiments of the present invention, controllable detachable member can be automatically controlled detachable member or detachable group of hydraulic control
Part.
As shown in Fig. 2, when controllable detachable member is automatically controlled detachable member, controllable detachable member includes bolt 8, bullet
Spring 7 and electromagnet 6, the outer wall of 1 bottom of spud leg are equipped with stepped hole 11, and 2 inner wall of shoe is equipped with annular groove 9, and stepped hole 11 includes
Small-bore section of both ends is arranged on intermediate heavy caliber section, spring 7 in above-mentioned heavy caliber section, and electromagnet 6 is arranged in spud leg 1
In small-bore section of side, bolt 8 be multi-diameter shaft, the large scale part of multi-diameter shaft be arranged in above-mentioned heavy caliber section and with spring 7
It is connected, the small size part of multi-diameter shaft is extended partially by above-mentioned large scale in small-bore section of 1 outside of spud leg, when electromagnet 6
Not it is electric when, bolt 8 stretches out stepped hole 11 and is inserted into annular groove 9, when electromagnet 6 it is electric when, in 8 retraction stepped hole 11 of bolt.
In other realization methods, electromagnet 6 and spring 7 can be replaced realizing control function with hydraulic cylinder accelerator rod, i.e. hydraulic control is removable
Unload component.
Controllable detachable member using the above structure carries out spud leg and shoe locking, on the one hand convenient for control, the opposing party
Face has the advantages of simple structure and easy realization.
In embodiments of the present invention, by the way that controllable detachable member is controlled to detach spud leg with shoe, including：
Jack-up unit is down to sea level by the first step.
Second step controls electromagnet to obtain electric, bolt is driven to be extracted from the annular groove of shoe.Specifically, electromagnet 6 obtains
When electric, attraction is generated to bolt 8, so as to compressed spring 7, bolt 8 is extracted from the annular groove 9 of shoe 2.
Third walks, and shoe and spud leg are separated.
As shown in figure 3, jack-up unit 3 is stood across the sea by spud leg 1 and shoe 2, wherein, spud leg 1 and shoe 2 are inserted
Enter in mud layer 4, when jack-up unit 3 is down to sea level, jack-up unit 3 is fixed, jack-up unit 3 is floated by seawater
Therefore power, reduces the active force of spud leg 1 and jack-up unit 3 to bolt 8, so as to which the annular for being conducive to bolt 8 from shoe 2 is recessed
It is extracted in slot 9.
Step 102：Pile pulling is carried out to the spud leg after separation, to pull up spud leg.
In embodiments of the present invention, above-mentioned steps 102 can include：
The height of jack-up unit is reduced by the jacking system of jack-up unit, the drinking water for increasing jack-up unit is deep
Spud leg is extracted mud layer by degree, the buoyancy generated later using jack-up unit drinking water.
As shown in figure 4, due at this time by the smaller spud leg 1 of mud layer resistance with unlocked by the larger shoe 2 of resistance, because
This, can easily will pull up the spud leg 1 after detaching from mud layer 4, and reluctant shoe 2 is stayed in mud layer 4,
Greatly reduce the 1 required time of pile pulling leg.
After extraction, the spud leg 1 of extraction is risen by the jacking system of jack-up unit 3.
Optionally, pile extracting method provided in an embodiment of the present invention can also include shoe process flow.
In a kind of possible realization method, shoe process flow is as follows：Shoe (shoe separated) is thrown aside, it will
Spare shoe is installed on spud leg.The time of pile pulling boots consumption can be greatlyd save in this way, when encountering the shoe for being difficult to pull up, this
The scheme of sample can greatly improve the pile pulling efficiency of jack-up unit.
In alternatively possible realization method, shoe process flow is as follows：
First, after spud leg is pulled up, positioning of casting anchor is carried out to jack-up unit；
Then, it is sling successively by shoe is single.
Shoe, economic benefit higher can be reused in this way.
As shown in figure 5, because during pile pulling boots 2, reaction force can be generated to jack-up unit 3, it is therefore desirable to by jack up
Platform 3 is connected to by anchor chain 10 on jack-up unit 3 by fixation of casting anchor, anchor, to provide the stability of jack-up unit 3.
Further, shoe is sling, including：
Shoe is connected on the boom hoisting of jack-up unit by the rope chain reserved in shoe；
Shoe is sling by boom hoisting.
Such realization method is fairly simple directly, implements and is also easier.
As shown in figure 5, by reserved rope chain 5, the shoe 2 in mud layer 4 can be sling respectively successively, reduce extraction
The difficulty of shoe 2.
Preferably, rope chain 5 is cable, can ensure to sling using cable and sufficiently large pulling force is born during shoe.
In this implementation, pile extracting method further includes：
After shoe is sling, spud leg is docked with shoe.
Specifically, spud leg is docked with shoe, including：
Shoe is hung to spud leg lower position；
Shoe is docked with spud leg；
Shoe is locked with spud leg using controllable detachable member.
As shown in fig. 6, it is structure diagram when spud leg is docked with shoe.
Spud leg 1 is fully completed with shoe 2 after docking, it is possible to platform is moved to other places and carry out operations on the sea
.
Since shoe is sling by rope chain, shoe is hung to spud leg lower position following manner may be used and realized：
The each rope chain being connected in shoe is controlled to be evenly distributed on the surrounding of spud leg；
The equal length of each rope chain is controlled, so that shoe is in spud leg lower position.
In addition, when realizing, lifted by crane using the rope chain of equal length, the above-mentioned rope chain length of control can be facilitated.
In embodiments of the present invention, each hoistable platform is supported by multiple spud legs, during pile pulling, first by each spud leg and shoe
Separation, then pulls up each spud leg, finally pulls up each shoe successively.
In embodiments of the present invention, spud leg pulls up spud leg after being detached with shoe, and the pulling force very little that spud leg is subject at this time makes
The pile pulling process of platform is easier and quickly, pile extracting method is simply direct, and operating process links up, and simplifies platform pile pulling flow,
The pile pulling time is reduced, increases the effective time of platform, and pile pulling mode safety；In addition, it eliminates complicated, costliness
Stake system is rushed, reduces the construction expense of jack-up unit.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of pile extracting method of jack-up unit, which is characterized in that the method is suitable for connecting using controllable detachable member
The spud leg of the jack-up unit connect and shoe, the method includes：
By the way that the controllable detachable member is controlled to detach the spud leg with the shoe；
Pile pulling is carried out to the spud leg after separation, to pull up the spud leg；
After the spud leg is pulled up, positioning of casting anchor is carried out to the jack-up unit；
The shoe is connected on the boom hoisting of the jack-up unit by the rope chain reserved in the shoe；
The shoe is sling by the boom hoisting；
After the shoe is sling, the shoe is hung to the spud leg lower position；
The shoe is docked with the spud leg；
The shoe is locked with the spud leg using the controllable detachable member；
Wherein, it is described that the shoe is hung to the spud leg lower position, including：
The rope chain is controlled to be evenly distributed on the surrounding of the spud leg；
The equal length of each rope chain is controlled, so that the shoe is in the spud leg lower position.
2. pile extracting method according to claim 1, which is characterized in that the controllable detachable member includes bolt, spring
And electromagnet, the outer wall of the spud leg bottom are equipped with stepped hole, the shoe inner wall is equipped with annular groove, and the stepped hole includes
Small-bore section of both ends is arranged on intermediate heavy caliber section, the spring in the heavy caliber section, and the electromagnet is arranged on
In small-bore section on the inside of the spud leg, the bolt is multi-diameter shaft, and the large scale part of the multi-diameter shaft is arranged on described big
It is connected in bore section and with the spring, the small size part of the multi-diameter shaft extends partially into the spud leg by the large scale
In small-bore section of outside, when the electromagnet not it is electric when, the bolt stretches out the stepped hole and is inserted into the annular groove,
When the electromagnet obtains electric, described in the latch retract in stepped hole.
3. pile extracting method according to claim 2, which is characterized in that described by controlling the controllable detachable member will
The spud leg is detached with the shoe, including：
The jack-up unit is down to sea level；
The electromagnet is controlled to obtain electric, the bolt is driven to be extracted from the annular groove of the shoe；
The shoe and the spud leg are separated.
4. pile extracting method according to any one of claims 1 to 3, which is characterized in that the spud leg after described pair of separation
Pile pulling is carried out, including：
The jack-up unit is reduced, increases the jack-up unit draft, until the spud leg is extracted mud layer.
5. pile extracting method according to any one of claims 1 to 3, which is characterized in that the pile extracting method further includes：
After the spud leg is pulled up, spare shoe is installed on the spud leg；
It is locked using the controllable detachable member.
6. pile extracting method according to claim 1, which is characterized in that the rope chain is cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610181689.1A CN105804077B (en) | 2016-03-28 | 2016-03-28 | A kind of pile extracting method of jack-up unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610181689.1A CN105804077B (en) | 2016-03-28 | 2016-03-28 | A kind of pile extracting method of jack-up unit |
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| CN105804077A CN105804077A (en) | 2016-07-27 |
| CN105804077B true CN105804077B (en) | 2018-06-12 |
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| CN106759342B (en) * | 2017-03-03 | 2022-09-16 | 中交第三航务工程局有限公司 | Efficient pile-punching protective sleeve |
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| CN112302018B (en) * | 2020-10-29 | 2022-04-12 | 山东大禹水务建设集团有限公司 | Hydraulic engineering is with pulling out post device |
| CN112546902A (en) * | 2020-11-19 | 2021-03-26 | 重庆市中药研究院 | Homogenizing emulsifying machine |
| CN116876494B (en) * | 2023-09-07 | 2023-12-01 | 启东中远海运海洋工程有限公司 | Emergency safety pile pulling system for self-elevating wind power installation ship |
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| CN105804077A (en) | 2016-07-27 |
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