KR101495572B1 - Multiple Suction Pile Anchor - Google Patents

Abstract

The present invention relates to a multiple suction file anchor.
The present invention is characterized in that it has a hollow shape with an opening 120 opened downward for suction on the bottom surface and a drain 140 for penetrating into the bottom of the seabed through internal suction on the upper surface, A suction file 100 (101) arranged; And a coupling plate 300 connected to an end portion of the connection cable 400 for connecting the floating structure to the floating structure so that the suction files 100 and 101 are connected to each other, do.
The present invention relates to an anchor structure for an anchor for a seabed in which a plurality of suction piles having the same capacity and connected in parallel are embedded in a seabed through a suction, have.

Description

Multiple Suction File Anchor {Multiple Suction Pile Anchor}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor to be installed in a seabed sole for fixing or restraining a marine structure, and more particularly, to an anchor for restraining a marine structure on a seabed ground, So that the number of suction files can correspond to the drawing resistance of the floating structure without increasing the cross-sectional area of the suction file due to the confinement of the marine structure, and the construction of the multiple suction file anchors ≪ / RTI >

In general, in order to install offshore structures such as oil drilling facilities and wind power generation facilities, it is necessary to secure a stable fixing force minimizing the shaking of the offshore structure. To fix the offshore structure, It is common to fix the sea structure fixedly.

When the anchor is buried in the seabed, the file is lowered to the seabed and the anchor installed at the lower end of the file is positioned on the seabed so that the anchor is fixed to the seabed.

On the other hand, a suction pile refers to a file installed on the ground due to a pressure difference between the inside and outside of a suction file generated when a fluid such as water or air inside the file is sucked to the outside. Suction file can be applied to subsoil ground which can generate suction as well as subsoil ground by using hydrostatic pressure (suction) below water pressure. Suction is generated by forced drainage. Such a suction file is also referred to as a bucket file.

The shape of the suction pail is a hollow caisson such as a cylindrical (without necessarily a cylindrical shape) without a bottom plate, and the upper end is sealed to facilitate suction. The installation method of the suction file will be briefly described as follows.

First, when the suction file is placed on the bottom of the water (for example, the undersurface), the bottom portion of the suction file is penetrated to the bottom of the water to a certain depth by the self weight of the suction file. In this state, when the water inside the file is drained to the outside by using a suction device such as a submersible pump installed at the upper end of the suction file, the pressure inside the suction file is reduced, so that there is a pressure difference between the inside and the outside of the suction file. At this time, the force is balanced in the horizontal direction in the structure of the suction file, but the downward force is generated in the up and down direction. The suction force is introduced into the ground by the generated force.

As mentioned above, the submersible pump is installed at the upper end of the suction pile, while the waterpipe is provided with a workbench on a barge or a general ship. The workbench includes a crane for installing the suction pile and a position measuring device for measuring the position of the submerged pump . Therefore, when the suction file is placed at a suitable point in the water by using a crane and then the water in the suction file is discharged to the outside by operating the underwater pump, a pressure difference is generated between the water and the inside of the suction file, The suction file is caught by the ground.

The resistance to the penetration of the suction file is determined by the bearing capacity of the bottom end of the suction file and the friction force of the main surface, and if the tube input is larger than the resistance force, the suction file is intruded. The induction force of the suction file is proportional to the pressure difference in the suction file and the cross sectional area of the suction file (that is, the square of the suction file diameter), but the resistance is proportional to the suction file diameter. Can be installed.

In addition, in order to construct a buried anchor having a large bearing capacity on the sea floor, the anchor is installed by excavating the bottom surface of the sea floor, placing the anchor, and then performing the cover. However, this method has a problem that environmental pollution occurs due to excavation and cover.

Another method is to lower the file from the barge to the sea floor and install an anchor at the bottom of the file, but rotating the file to put the anchor on the sea floor. However, there is a problem in that an anchor installation method using a file can not be constructed in a deep water depth region.

On the other hand, according to the technology of Korean Patent Registration No. 10-0459985 (Suction File Anchor) of Document 1 presented in the prior art document, an anchor that can be easily installed even in deep sea is provided.

That is, in the anchor installed in the water, a circular hydraulic jack is fixed to the lower end of the suction file, and a hydraulic pipe for operating the hydraulic jack is installed through the inside of the suction file and the upper end of the suction file, The upper end of the suction file is connected to a crane of the sea, a pipe for discharging water introduced into the suction pile is installed at the upper end of the suction pile, and is connected to a water pump, The suction file is separated and installed by the operation of the hydraulic jack in a state where the anchor is coupled with the suction file and the anchor is sandwiched at a predetermined depth from the seabed surface and one side of the wire is fixedly installed on the outer surface of the anchor Suction file anchors have been presented.

The anchor can be installed by attaching the anchor to the lower end of the suction file through the hydraulic jack so that the anchor can be installed. In addition, the anchor can be installed even in the deep sea due to no need for oysters or soil, It is advantageous that the cost is low.

However, in the case of the above-mentioned prior art, when an anchor capacity of a marine structure is set to a value larger than a draw resistance value of a marine structure, a manufacturing cost is increased and an anchor capacity is buried in the seabed There has been a difficult problem.

[Patent Document 1] Korean Patent Registration No. 10-0459985 (Suction file anchor)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

SUMMARY OF THE INVENTION [0006]

The anchors installed in the seabed ground are made up of a plurality of suction files connected in parallel with the same capacity so as to be buried in the seabed through a suction, and the buried suction files are used for fixing or restraining the sea structure by connecting cables.

Also, in order to increase the anchor capacity, in order to solve the decrease in the increase rate of the anchor capacity compared to the increase in the size or the cross-sectional area of the suction file when the size or cross-sectional area of the suction file is increased, a plurality of suction files are connected in parallel, Thereby increasing the anchor efficiency (anchor capacity / anchor weight).

According to an aspect of the present invention,

A suction file having a hollow shape and having an opening opening downwardly opened for suction on a bottom surface thereof and a drain port for penetrating into the bottom of the seabed through an internal suction on the upper surface thereof; And a coupling plate connected to an end portion of the connection cable for coupling the rescue suction file to the rescue structure and restraining the rescue structure on one surface thereof.

In addition, the coupling plate may be formed as a pair of first and second coupling plates so as to be parallel to each other with the suction files facing each other, and may be coupled to the outside of the suction files.

In addition, at least one partition plate may be provided between the first and second coupling plates to couple the plurality of suction files in an isolated state.

According to the above feature, the present invention provides a method of setting a number of suction files, the method comprising: setting a number of suction files to set a number of suction files to meet a drawing resistance value condition required by a marine structure; A suction file parallel arrangement step of arranging the suction files in parallel; A suction file fixing step of coupling the suction files arranged through the coupling plate so as to form an integral shape; A suction file position fixing step in which the assembled suction files are placed on the bottom of the seabed so that the suction files are penetrated to a certain depth by their own weight; Suction pump is operated to suck the water through the drainage hole from the inside of the suction pouch to generate suction pressure inside the suction pile. The suction file penetrates the suction pile to the design depth by the suction pressure by the suction pressure. step; When the penetration of the suction file is completed, the connection cable connected to the coupling plate is connected to the marine structure to constrain the marine structure, so that the marine structure can be construed.

The present invention relates to an anchor structure for anchor construction in which anchors installed in a seabed sole are made up of a plurality of suction files connected in parallel and having the same capacity, The anchor efficiency (anchor capacity / anchor weight) can be increased by connecting the suction files in parallel to each other as an anchor.

1 is a perspective view of a multiple suction file anchor according to a first embodiment of the present invention,
Fig. 2 is a plan view of Fig. 1,
FIG. 3 is a perspective view showing a state in which the multiple suction files of FIG. 1 are placed on a seabed,
FIG. 4 is a view showing the state of use in which multiple suction files are introduced into the seabed,
5 shows another embodiment according to the first embodiment,
Fig. 6 is a plan view of Fig. 5,
Fig. 7 is a use state diagram of Fig. 5,
FIG. 8 is a view illustrating a state in which a plurality of suction files are applied according to another embodiment of FIG. 5,
Fig. 9 is a plan view of Fig. 8,
Fig. 10 is a state in which the suction file of Fig. 8 is introduced into the seabed,
11 is a perspective view of a multiple suction file anchor according to a fourth embodiment of the present invention,
Fig. 12 is a plan view of Fig. 11,
Fig. 13 is an application state of the state according to the embodiment shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it should be understood that the following embodiments are provided so that those skilled in the art can understand the present invention without departing from the scope and spirit of the present invention. It is not.

In the present invention, a plurality of suction files connected in parallel when an anchor for restraining an offshore structure on a seabed ground is installed in the seabed so that a function as an anchor is performed.

≪ Embodiment 1 >

1 to 4, the present invention is characterized in that a suction file 100 (101) arranged in parallel to two or more in parallel and intruded into a seabed ground during a suction operation, And a connection cable 400 connecting the coupling plate 300 and the sea structure so that the suction piles 100 and 101 constrain the sea structure.

At least two suction files (100) and (101) are installed, the number of which is dependent on the drawing resistance value of the sea structure.

As is well known in the art, an open mouth 120 having a circular hollow shape and opened downward for suction is formed on the bottom surface, and a drain 140 is provided on the upper surface for intrusion into the seabed ground through internal suction do.

The drain port 140 is connected to a suction pump and the suction pump may be a submersible pump directly installed in the drain port 140 or may be connected to the drain port 140 through a hose and installed in a marine structure such as a barge line .

Therefore, when the suction pump 100 is operated to drain water to the outside from the inside of the suction file 100 (101) when the suction file (100) (101) Water is sucked from the inside of the hollow through the drain 140 and suction pressure is generated inside the suction pads 100 and 101. The suction pads 100 and 101 are penetrated into the bottom of the sea by the suction pressure do.

In other words, when the suction file 100 (101) is submerged on the surface of the seabed ground by its own weight, the suction pump 100 is operated to drain the water from the hollow interior of the suction pads 100 The water is sucked from the inside of the hollow of the suction file 100 (101) through the drain port (140), and suction pressure is generated inside the hollow of the suction pads (100) and (101) The file 100 (101) is intruded into the seabed.

Although not shown, the suction pump performs a pumping operation as known in the art, and may be installed in a structure of a sea surface or a suction file, and is connected to the drain 140 directly or through a valve.

The coupling plate 300 is integrally formed with the outer side surfaces of the suction piles 100 and 101 arranged in parallel and connected to each other through a welding or fastening hole so as to be integrated with each other, The end of the connecting cable 400 for restraining the marine structure is connected.

The connection cable 400 is for connecting the marine structure to the coupling plate 300 and may be formed of a wire or a chain and has one end connected to the coupling port 410 of the coupling plate 300.

The construction of the multi-suction file anchor according to the present invention is as follows.

First, a suction file number setting step of setting the number of suction files (100) 101 to meet the drawing resistance value condition required by the marine structure is performed. Then, as shown in FIGS. 1 and 2, a suction file parallel arrangement step of arranging the suction files 100 and 101 in parallel is performed, and the suction files 100 and 101 arranged in series are integrated The suction plate fixing step may be performed through the coupling plate 300. Subsequently, the assembling is completed by connecting the end of the connecting cable 400 to the coupling plate 300, and the suction pile 100 (101), which has been assembled successively, is placed on the bottom of the seabed so as to be penetrated to a certain depth by its own weight You can do this by fixing the position of the suction file. Subsequently, the suction pump is operated to suck water from the hollow interior of the suction pads 100 (101) through the drain port (140) to generate a suction pressure inside the suction pads (100) and (101) A suction file penetration step is performed to allow the suction file 100 (101) to be penetrated to the design depth by the bottom of the seam. Then, as shown in Fig. 3, when the infiltration of the suction file 100 (101) The construction is completed when the marine structure restraining step for restraining the marine structure through the connection of the connecting cable 400 is performed.

That is, the anchor capacity corresponding to the drawing resistance value required by the offshore structure can be set by setting the number of suction files penetrated into the seabed.

The drawing resistance value refers to a value for maintaining the position fixed state of the marine structure against the sea floor against the storm surge.

Reference numeral 410 denotes a connector for connecting the connection cable 400 to the coupling plate 300.

≪ Embodiment 2 >

According to another embodiment of the present invention, as shown in FIGS. 5 to 7, the present invention is characterized in that at least two suction piles (100) (101) are arranged in parallel and penetrate the bottom of the seabed during a suction operation, (100) (101) are integrally joined to the suction file (100) (101) by welding or fastening means in parallel so as to face each other on the outside of the suction file (100) The first and second coupling plates 301 and 302 and one end of the first and second coupling plates 301 and 302 are coupled to each other and the other end of the suction file 100 and the coupling plate 100 is connected to the floating structure, And a connecting cable 400 for restricting the marine structure.

A partition plate 340 is provided between the first and second coupling plates 301 and 302 so that the first and second coupling plates 301 and 302 are integrally formed, The suction pads 100 and 101 are coupled to each other in a state of being isolated from each other with respect to the center of the suction pads 100 and 101 so that a stable fixing force of the suction pads 100 and 101 can be secured.

It is preferable that the first and second coupling plates 301 and 302 are attached to the outside of the suction pads 100 and 101 with a plate-like member in close contact with each other. This is to allow the first and second coupling plates 301 and 302 to be introduced together with the suction file 100 (101) into the bottom of the seabed during the suction operation.

Here, the suction file 100 and the connection cable 400 perform the same functions as those of the first embodiment, and a detailed description thereof will be omitted.

≪ Third Embodiment >

8 to 10, a plurality of partition plates 340 are installed between the first coupling plate 301 and the second coupling plate 302. In this embodiment, And the suction pads 100, 101 and 102 are coupled between the partition plate 340 and the other partition plate 340a in an isolated state.

This is because it is possible to secure the stable binding force of the suction pads 100, 101 and 102 by increasing the number of suction pads without increasing the size of the suction pads when the marine structure requires a large drawing resistance value, It is possible to facilitate the penetration of the suction pads 100, 101 and 102 and the first and second coupling plates 301 and 302 at the time of penetration into the sea structure, So that the resistance of the suction files 100 (101) and (102) can be further increased.

<Fourth Embodiment>

In the present invention, three openings having a triangular shape as shown in FIGS. 11 to 13 are formed. Each of the openings 120 is formed in a hollow shape and opened downward for suction on the bottom surface. A triangular coupling plate 600 for coupling the suction pads 100, 101 and 102 provided with the drain port 140 for penetration to the ground and the suction pads 100, 101 and 102 as one body; And a connecting cable 400 having one end connected to the triangular coupling plate 600 and the other end connected to the floating structure.

The suction piles 100, 101, and 102 are designed to have a triangular shape when seen from a plane, thereby securing an anchor capacity at the time of penetration of the seabed ground and securing a large pulling resistance value. The same as in the third embodiment, and a detailed description thereof will be omitted.

The triangular coupling plate 600 has a center axis 610 located at the center of the suction pads 100, 101 and 102 and a center axis 610 positioned radially with respect to the center axis 610, 622, 622, 621, 622 positioned between the wing and the suction file, and three suction nozzles 620, 621, 622 located between the suction file and the suction file, (100), (101), and (102), and the other end of the connecting cable (400) is connected to one end of the connecting structure And restraint plates 630, 631, and 632, respectively.

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, but, on the contrary, This is possible.

100, 101, 102: Suction file
120: opening 140: drain
300: engaging plate
301, 302: first and second coupling plates
400: Connecting cable
600: triangular coupling plate

Claims (5)

A hollow opening 120 is formed on the bottom surface to open for suction, and a drainage hole 140 for penetrating the bottom of the sea through an internal suction is provided on the upper surface. At least two or more openings are arranged in parallel, A suction file (100) (101) embedded in the seabed sole and buried therein;
A coupling plate (300) for integrally forming the suction pads (100) and (101) arranged in a connected state;
A connection cable 400 is connected to one end of the coupling plate 300 and the sea structure to connect the coupling plate 300 and the sea structure so that the suction files 100 and 101 constrain the sea structure, ; &Lt; / RTI &gt;
The coupling plate 300 constitutes a pair of first and second coupling plates 301 and 302 while being positioned parallel to the suction pads 100 and 101 so as to face the suction pads 100 and 101, The suction pads 100 and 101 and the first and second coupling plates 301 and 302 are embedded in the bottom of the seabed together while being sucked,
The number of the suction files is set to an anchor capacity corresponding to a drawing resistance value required by the marine structure,
Wherein the plurality of suction files connected in parallel function as an anchor for restraining the sea structure by being embedded in the seabed ground.
delete The method according to claim 1,
At least one partition plate (340) is provided between the first coupling plate (301) and the second coupling plate (302) so that the plurality of suction pads (100) and (101) Multiple suction file anchors.
Three openings having a triangular configuration and each having a hollow shape and having an opening opening 120 opened downward for suction on the bottom surface and a drain port 140 for penetrating into the bottom of the seabed through internal suction is provided on the upper surface A suction file 100 (101) 102;
A center shaft 610 located at the center of the suction pads 100, 101 and 102 and a center shaft 610 located between the suction puff and the suction pawl, (102), (102), (102), (102) coupled to each end of the vanes (620, 621, 622) and positioned between the vanes and the vanes, A triangular coupling plate 600 formed by constraining plates 630, 631, and 632 to which the intermediate portions are integrally coupled to each other and to which the other ends of the connecting cables 400, one end of which is connected to one end, are connected; And a plurality of suction file anchors.
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