KR101546484B1

KR101546484B1 - Suction file anchor construction method by vertical pullout at original position

Info

Publication number: KR101546484B1
Application number: KR1020130129387A
Authority: KR
Inventors: 김영진; 김인규; 김유석; 김경오; 이종필
Original assignee: (주)대우건설
Priority date: 2013-10-29
Filing date: 2013-10-29
Publication date: 2015-08-24
Also published as: KR20150049172A

Abstract

The present invention relates to a method of constructing a suction pile anchor capable of being vertically pulled out from its original position. More particularly, the present invention relates to a method of constructing a suction pile anchor, And the lower end of each mooring line is fixed to the hydraulic clamps formed on both sides of the upper surface of the suction pile, the mooring line is vertically penetrated by penetrating the suction pile anchor and the suction pile with the mooring line installed vertically, Hydraulic device is operated to separate the suction file and suction file. When the suction file is pulled out, the hydraulic line is unlocked from the hydraulic clamp. When drawing the mooring line to give tension to the mooring line, the suction file anchor is fixed to the original position In the state where the mooring line is drawn vertically, Possible relates to a suction anchor construction method files.

Description

TECHNICAL FIELD [0001] The present invention relates to an anchor for a suction pile,

The present invention relates to a method of constructing a suction pile anchor capable of being vertically pulled out from its original position. More specifically, an anchor and a suction pile are connected to each other through a hydraulic device, and then the end of each mooring line is drawn And the lower end of each mooring line is fixed to a hydraulic clamp formed on both sides of the suction pile. In this state, the mooring line is vertically penetrated by penetrating the anchor and the suction pile while vertically installing the mooring line, The anchor is separated from the suction file, and when the suction file is pulled out, the mooring line is released from the hydraulic clamp, and when the mooring line is drawn to give the mooring line tension, only the mooring line A Study on the Method of Construction of Suction Pile Anchor for Vertical Pulling A.

In general, the anchors used for mooring of offshore structures include concrete structures, suction piles, and chiseled anchors. These types of marine structures are floating structures floating on the sea surface rather than gravity structures that are self- The structure is very advantageous in terms of construction cost and is being used in various sea structures.

A part of the floating structure is floated on the surface of the sea while it is immersed in the sea surface, and a floating space for providing buoyancy to the structure is provided therein and a mooring device is provided to prevent the wave from being thrown.

A mooring device is a device that fixes a marine structure to a predetermined position so as not to deviate from a certain place.

These mooring devices are divided into various ways according to the manner in which the mooring lines are installed on the floating structure, for example, a TLP (Tension Leg Platform) method, a Catenary method, a tension method, etc. .

In the TLP system, suction file anchors are often used, and the mooring line must be connected to the structure at the top of the suction file anchor in order to maintain the tension. In other words, the suction file must be installed at the correct position because the tension between the suction file anchor and the structure should be exerted and the mooring position of the structure and the mooring position of the suction file anchor must correspond one to one. At this time, the suction file is a file that is inverted with a cup and is a marine construction file, which uses a pump at the top of the suction file to draw water inside the suction file, and to introduce the suction file by using the pressure difference between the inside and the outside of the suction file.

A method of connecting a mooring line to a wall side of a suction file using a suction file anchor is disclosed in Korean Patent Registration No. 10-0459985 (Suction File Anchor) filed and registered by the present applicant.

However, when such an anchor is pulled out as shown in FIG. 1, if the anchor is rotated in the ground, the position of the ground is changed There is a problem that it can not be applied to the TLP scheme.

Domestic patent registration 10-0459985

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide an aquaculture system in which an anchor and a suction file are connected to each other through a hydraulic device and then the end of each mooring line is fixed to a draw- The lower end of the line is fixed to the hydraulic clamps formed on both sides of the suction pile. The mooring line is vertically installed, the anchor and suction file are penetrated, the mooring line is penetrated vertically, and the hydraulic device is operated to separate the anchor and suction file And then pulls the mooring line from the hydraulic clamp when the suction file is pulled out. In order to tension the mooring line, when the mooring line is pulled out, It is an object of the present invention to provide a method of constructing a suction file anchor.

According to an aspect of the present invention,

A suction file anchor construction method in which a suction file is connected to an upper end of an anchor by a hydraulic device, characterized in that a plurality of mooring lines are vertically installed on the side surface of the suction file anchor, A first winch connected to the installation line and connected to the mooring line, and a second winch installed on the installation line is operated to lower the suction file anchor while filling the inside of the suction file anchor with water, To be buried partially in the ground; A suction pressure embedding step of applying a suction pressure while discharging the water inside the suction file anchor to the outside to bury the suction file anchor at a design depth in the ground; A suction file drawing step of operating the hydraulic device at the suction file anchor to extract the suction file by receiving hydraulic pressure from a hydraulic pump installed at the installation line, and drawing the suction file using the first winch; A tensioning force applying step of pulling out the mooring line by using the second winch and introducing a tensioning force to the mooring line when the suction file is pulled out; And a marine structure installation process in which the marine structure is connected to the mooring line into which the tensional force is introduced.

Here, the suction file drawing process separates the mooring line connected to the suction file.

Here, the anchor may have a cylindrical shape and may include a first body having a plurality of protrusions formed at an upper end thereof; And a first drawing ring formed to be mutually symmetrical on both upper sides.

Here, the suction pail may include a second main body having a top surface closed in a cylindrical shape and having a first screw surface formed on a lower outer side thereof; A second draw-out ring formed at the center of the upper surface of the second body so that the wires are connected; An injection pump installed on an upper surface of the second body to fill water in the suction file anchor; A valve installed on the upper surface of the second body to fill the water inside the suction file anchor; A suction pump installed on an upper surface of the second body and discharging water inside the suction file anchor to the outside; And an oil pump installed on the upper surface of the second body so as to be symmetrical with the first draw ring of the anchor in a 1: 1 direction and operated by an oil pressure supplied from a hydraulic pump installed on the installation line to fix and separate the mooring line Hydraulic clamp included.

In this case, the hydraulic device is formed in a cylindrical shape, and a second screw surface is formed on the inner side of the upper surface so as to be screwed to the first screw surface provided in the second body of the suction pile, and the projection of the anchor A connecting member having a bending jaw provided with a plurality of insertion holes to be inserted therein and a pair of fixing bars vertically installed on the bending jaw; And a plurality of protrusions formed on an upper surface of the bending jaw of the connecting member to press-fit the protrusions of the anchors exposed through the insertion holes of the connecting member, the respective ends of the bones being mutually connected by hydraulic cylinders, And a fastening band formed at the other end to be inserted into a fastening bar formed on the connecting member.

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According to the present invention, the anchor and the suction pile can be connected to each other through a hydraulic device, and then the end of each mooring line is connected to a drawer And the lower end of each mooring line is fixed to a hydraulic clamp formed on both sides of the suction pile. In this state, the mooring line is vertically penetrated by penetrating the anchor and the suction pile while vertically installing the mooring line, The anchor is separated from the suction file, and when the suction file is pulled out, the mooring line is released from the hydraulic clamp, and when the mooring line is drawn to give the mooring line tension, only the mooring line Suction file anchors can be applied in the TLP system by allowing vertical drawing.

1 is a view for explaining a problem of a conventional suction file anchor.
2 is a perspective view showing the structure of a suction pile anchor capable of vertical drawing at a home position according to the present invention.
3 is an exploded perspective view showing the structure of a suction pile anchor capable of vertical drawing at a home position according to the present invention.
Fig. 4 is a sectional view of Fig. 2. Fig.
FIG. 5 is an explanatory view showing a state in which a suction pile anchor capable of vertical drawing at a home position according to the present invention is installed.
6 to 10 are process drawings for explaining a method of installing a suction pile anchor capable of vertical drawing at a home position according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the structure of a suction pile anchor capable of vertical drawing at a home position according to the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

FIG. 2 is a perspective view showing the structure of a suction pile anchor capable of vertical drawing at a home position according to the present invention, FIG. 3 is an exploded perspective view showing a structure of a suction pile anchor capable of vertical drawing at a home position according to the present invention, FIG. 5 is an explanatory view showing a state in which a suction pile anchor capable of vertically drawing is installed at a home position according to the present invention, and FIGS. 6 to 10 are views showing a suction file anchor capable of drawing vertically at a home position according to the present invention. And is a process diagram for explaining a construction method.

2 to 10, a suction file anchor 100 capable of vertically drawing at a home position according to the present invention includes an anchor 110, a suction file 120, a hydraulic device 130, a mooring line 140 ).

First, the anchor 110 is composed of a first main body 111 and a first draw-out ring 113.

The first body 111 is formed in a cylindrical shape and has an upper end bent inward to form a step 111a and a plurality of protrusions 111b protruding from the upper end of the step 111a.

The first drawing rings 113 are formed to be mutually symmetrical on both sides of the upper end.

The suction file 120 includes a second main body 121, a second drawing ring 122, an injection pump 123, a valve 124, a suction pump 125, a hydraulic clamp 126, .

The second body 121 has the same diameter as that of the anchor 110 and is formed into a cylindrical shape with its top surface closed, and a first truncated surface 121a is formed at the lower end. At this time, the second main body 121 is formed with a through hole 121b through which an upper surface of the second main body 121 is sealed so that the hydraulic line L passes through it.

The second drawing ring 122 is formed at the center of the upper surface of the second body 121 so that the wire W is connected. At this time, a short link chain may be applied in place of the wire (W).

The injection pump 123 is installed on the upper surface of the second main body 121 to fill the suction pouch anchor 110 with water.

The valve 124 is installed on the upper surface of the second main body 121 to fill the inside of the suction file anchor 110 with water.

The suction pump 125 is installed on the upper surface of the second body 121 to discharge the water inside the suction file anchor 110 to the outside.

The hydraulic clamp 126 is installed on the upper surface of the second main body 121 so as to be symmetrical with the first draw ring 113 of the anchor 110 by 1: (140).

The hydraulic device 130 is composed of a connecting member 131 and a tightening band 133.

The connection member 131 is formed in a cylindrical shape having the same diameter as that of the first body 111 so that the connection member 131 is screwed into the first screw surface 121a provided on the second body 121 of the suction puff 120 A bending jaw 131c having a plurality of insertion holes 131b into which the protrusions 111b of the anchor 110 are inserted is formed at the inner center portion of the bending jaw 131c, A pair of fixing bars 131d are vertically installed.

The tightening band 133 is provided on the upper surface of the bending step 131c of the connecting member 131 to press-fit the protrusion 111b of the exposed anchor 110 through the insertion hole 131b of the connecting member 131, And one end of each is connected to each other by a hydraulic cylinder 135 and a fixing hole 133a is formed at the other end of each fixing hole 133d so as to be inserted into a fixing bar 131d formed on the connecting member 131. [

The mooring line 140 is a short link chain having one end fixed to the first draw ring 113 of the anchor 110 and the other end fixed to the marine structure 1 in a tense state, Lt; / RTI >

In the meantime, the suction pile anchor 100 capable of vertical drawing at the home position according to the present invention is installed by the installation line 150.

At this time, the installation line 150 includes a first winch 151, a second winch 153, and a hydraulic pump 155.

The first winch 151 is connected to the wire W connected to the second draw ring 122 of the suction file 120 and pulls out the wire W to pull out the suction file 120.

The second winch 153 is connected to the mooring line 140 connected to the first draw-out ring 113 of the anchor 110 and draws the mooring line 140 to introduce a tensional force.

The hydraulic pump 155 supplies the hydraulic pressure to the hydraulic cylinder 135 of the hydraulic device 130 and the hydraulic clamp 126 of the suction file 120. At this time, the hydraulic line L of the hydraulic cylinder 135 of the hydraulic device 130 is drawn into the suction file 120 through the through hole 121b of the suction file 120 to prevent damage during embedding.

In this case, it is preferable that a remote controller (not shown) is provided on the installation line, and the remote controller is provided with an injection pump 123 of the suction file 120, a valve 124, a suction pump 125, Various buttons are provided to control the operation of the first winch 151, the second winch 153 and the hydraulic pump 155. [

Hereinafter, a suction file anchor construction method capable of vertical drawing at a home position according to the present invention will be described in detail with reference to the accompanying drawings.

6, the one end of the mooring line 140 is connected to the first draw-out ring 113 of the anchor 110 while the suction file anchor 100 manufactured as shown in FIG. 6 is transported to the installation position by using a carrier, The upper end of the mooring line 140 is fixed to the hydraulic clamp 126 of the suction pile 120 and the other end of the mooring line 140 is fixed to the second The first winch 151 is connected to the first winch 151 of the installation line 150 by connecting both ends of the wire W to the second draw-out ring 122 of the suction file 120 and the first winch 151 151 and the second winch 153 are operated to lower the suction file anchor 100 to the installation position and the valve 124 of the suction file 120 is opened to fill the inside of the suction file anchor 100 with water, To be partially buried in the ground. At this time, when the valve 124 of the suction file 120 is opened, the anchor 110 and the suction file 120 are communicated with each other, so that the water is filled therein and is lowered by its own weight (S100).

The valve 124 is closed and the first winch 151 and the second winch 153 and the suction pump 125 are operated as shown in FIG. 7 when the suction file anchor 100 is partially buried in the ground , The suction pile anchor 100 is buried in the ground by the suction pressure, and is buried at a design depth (S110). At this time, the mooring line 140 is inserted into the ground while maintaining the vertical position at the side of the suction file anchor 100.

When the suction file anchor 100 is filled with the design depth, the hydraulic pump 155 is operated to move the hydraulic cylinder 135 of the hydraulic device 130 and the hydraulic clamp 126 of the suction file 120 The suction pipe 120 and the hydraulic device 130 are separated from each other by the anchor 110 and the mooring line 140 is separated from the hydraulic clamp 126. When they are separated from each other, 151 are operated to pull the wire W to pull out the suction file 120 and the hydraulic device 130 (S120). At this time, it is preferable that the wire (W) is pulled out vertically so that the suction file 120 is drawn vertically.

9, when the suction file 120 and the hydraulic device 130 are pulled out, the second winch 153 is operated to pull out the mooring line 140 and to introduce the tension force into the mooring line 140 at step S130. At this time, the drawn suction file 120 and the hydraulic device 130 are reused.

Subsequently, as shown in Fig. 10, the marine structure 1 is connected to the mooring line 140 into which the tensional force is introduced.

Therefore, it is possible to connect the marine structures to the mooring line where the tension force is introduced at the original position of the anchors buried in the ground, so that the suction file anchor can be applied to the TLP method.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

1: Marine structure 110: Anchor
120: Suction file 130: Hydraulic device
140: Mooring line 150: Installation line
W: Wire

Claims

A suction file anchor construction method in which a suction file is connected to an upper end of an anchor by a hydraulic device,
A first winch installed on an installation line and connected to a top center of an upper surface of the suction file anchor in a state where a plurality of mooring lines are vertically installed to be symmetrical with each other on a side surface of the suction file anchor, The second winch installed on the installation line is operated to lower the suction pile anchor, filling the inside of the suction pile anchor with water, and partially filling the pile with the ground by self weight;
A suction pressure embedding step of applying a suction pressure while discharging the water inside the suction file anchor to the outside to bury the suction file anchor at a design depth in the ground;
A suction file drawing step of operating the hydraulic device at the suction file anchor to extract the suction file by receiving hydraulic pressure from a hydraulic pump installed at the installation line, and drawing the suction file using the first winch;
A tensioning force applying step of pulling out the mooring line by using the second winch and introducing a tensioning force to the mooring line when the suction file is pulled out; And
And a marine structure installation process in which a marine structure is connected to the mooring line introduced with a tension force,
The anchor
A first body formed in a cylindrical shape and having a plurality of projections formed at an upper end thereof; And a first drawing ring formed to be mutually symmetrical on both upper sides,
The suction file,
A second body formed in a cylindrical shape having an upper surface closed and having a first truncated surface formed on an outer side of a lower end thereof; A second draw-out ring formed at the center of the upper surface of the second body so that the wires are connected; An injection pump installed on an upper surface of the second body to fill water in the suction file anchor; A valve installed on the upper surface of the second body to fill the water inside the suction file anchor; A suction pump installed on an upper surface of the second body to discharge water inside the suction file anchor to the outside; And an oil pump installed on the upper surface of the second body so as to be symmetrical with the first draw ring of the anchor in a 1: 1 direction and operated by an oil pressure supplied from a hydraulic pump installed on the installation line to fix and separate the mooring line A method of constructing an anchor for a suction pile capable of vertical drawing at a home position, the method comprising a hydraulic clamp.

The method according to claim 1,
In the suction file drawing process,
And separating the mooring line connected to the suction file.

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The method according to claim 1,
In the hydraulic device,
And a plurality of insertion holes for inserting the protrusions of the anchors into the inner center portion of the second screw surface, wherein the second screw surface is formed to be screwed with the first screw surface provided on the second body of the suction file, A connecting member in which a pair of fixing bars are vertically installed on the upper surface of the bending jaw;
And a plurality of protrusions formed on an upper surface of the bending jaw of the connecting member to press-fit the protrusions of the anchors exposed through the insertion holes of the connecting member, the respective ends of the bones being mutually connected by hydraulic cylinders, And a fastening band formed at the other end to be inserted into a fixing bar formed on the connecting member.

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