KR101220056B1 - Suction File Anchor and Constructing Method thereof - Google Patents

Abstract

The present invention is a suction pile anchor that is installed in the sea bed to fix or restrain the structure to be installed in the sea, such as structures floating in the sea or oil drilling structures, when the suction pile anchor is installed in the sea bed easily penetrated into the ground While the suction pile anchor is inserted into the ground to the required depth, the hook member protrudes from the suction anchor to the side of the suction pile anchor and into the ground, thereby increasing the pull resistance of the suction pile anchor. It relates to a ground penetration hook protruding suction anchor and its construction method.

Description

Hook projecting suction file anchor and construction method {Suction File Anchor and Constructing Method}

The present invention relates to a hook protrusion type suction pile anchor and a construction method thereof, and in particular, a suction pile installed intruding into the sea bed to fix or restrain a structure installed in the sea, such as a structure floating in the sea or an oil drilling structure. As an anchor, the suction pile anchor can be easily penetrated into the ground when installed on the undersea ground, but after the suction pile anchor is inserted into the ground to the required depth, the hook member protrudes from the suction anchor to the side of the suction pile anchor. The present invention relates to a ground penetration hook protrusion type suction pile anchor configured to increase the pullout resistance of the suction pile anchor and its construction method.

A suction pile anchor is often used to support an offshore structure installed at sea, such as an oil drilling facility, or to restrict and restrict the movement of the offshore structure due to a wave or the like. 1 is a schematic diagram showing a state in which the suction pile anchor 1 is inserted into the seabed ground and the suction pile anchor 1 and the marine structure 100 are connected with the connection cable 101.

As shown in the figure, the suction pile anchor (1) consists of a hollow hollow cylindrical member to decompress the inside of the hollow to penetrate the sea floor, anchor function that resists the pulling force applied through the connecting cable 101 Will be used.

The conventional suction pile anchor 1 has a structure in which the pull-out resistance is merely exerted by the friction force between the outer wall side of the suction pile anchor 1 and the seabed, so that the suction pile anchor 1 can be exerted. There was a limit to increasing resistance.

The present invention has been developed to overcome the above limitations of the prior art, specifically, the suction pile anchor made of a hollow cylindrical member to penetrate the sea bed and exerts resistance to pull, easy penetration into the sea bed In addition, it is intended to greatly improve the pull-out resistance of the suction pile anchor by allowing the hook member to protrude from the side surface and to be embedded in the seabed after being penetrated to the required depth in the seabed.

In order to achieve the above object, in the present invention, as a suction pile anchor that is introduced into the sea bed, the body has a tubular shape and a hollow is formed therein, and a plate shape protruding perpendicular to the outside of the body and having a thickness. It comprises an outer flange of; When the suction pile anchor is inserted into the seabed, the outer flange includes a hook member which is moved by the pressing force and protrudes toward the side of the outer flange to be lodged in the seabed, and an outgoing member that presses against the hook member from the rear of the hook member. Is built in; With the suction pile anchor in contact with the ground of the seabed, the exit member pushes the rear of the hook member, and the hook member is moved in the outer flange, the end of which is formed at the side of the outer flange. Suction pile anchor is provided, characterized in that it has a configuration that is projected to the outside of the side of the outer flange through the lateral direction on the seabed ground.

Such a suction pile anchor of the present invention has a concave and circular arc-shaped sliding passage in which the hook member is slid in communication with the protruding hole formed in the side surface of the outer flange. The hook member is arranged to slide in the sliding passage while having a shape that extends long to have an arc shape corresponding to the shape of the sliding passage; In the sliding passage, an inner end portion is formed with a concave installation portion behind the rear end of the hook member, so that the advancing member may be disposed in the concave installation portion. In particular, in this configuration, the projecting end of the hook member is pointed; When the hook member is moved in the direction of the projection hole by the pressing force from the exit member, the cross section of the hook member increases in size from the protruding end to the inner end to prevent the hook member from excessively protruding out of the outer flange. It may have a configuration consisting of a tapered form so that.

In addition, in the suction pile anchor of the present invention, the advance member is composed of a cylinder member having a rod capable of generating a stretching stroke downward, so that the rod has a configuration to slide the hook member by stretching, or the The advancing member is composed of a motor and a linear motion gear that linearly moves in accordance with rotation of the motor. When the motor rotates, the linear motion gear retreats downward by a gear action that converts rotational force into linear motion. It may have a structure for sliding the member.

In addition, the exit member is composed of an igniter and an explosive member including explosives exploded by the operation of the igniter to exert an explosive force, and pushes the rear of the hook member by the explosive force of the explosive to push toward the protrusion hole. It may have a configuration to.

On the other hand, in the present invention, in order to achieve the above object, as a construction method of injecting and installing the suction pile anchor on the seabed, the main body having a cylindrical shape and hollow is formed inside, and protrudes perpendicularly to the outside of the main body It comprises a plate-shaped outer flange having a thickness; When the suction pile anchor is inserted into the seabed, the outer flange includes a hook member which is moved by the pressing force and protrudes toward the side of the outer flange to be lodged in the seabed, and an outgoing member that presses against the hook member from the rear of the hook member. Sinking the suction pile anchor with the water therein so as to be placed on the seabed; Decompressing the hollow interior of the body to allow the suction pile anchor to penetrate the seabed; And pushing the rear of the hook member by operating the advancement member in a state in which the suction pile anchor is inserted into the seabed ground, and the hook member moves in the outer flange so that an end thereof is protruded from the outside of the outer flange. Providing a method of constructing a suction pile anchor, comprising the step of projecting to the outside of the flange to be laterally embedded in the seabed ground.

According to the present invention, the outer flange of the suction pile anchor is provided with a hook member, the hook member is projected to the outside of the side surface of the outer flange in the state in which the suction pile anchor penetrated to the depth necessary for the seabed ground in the lateral direction on the seabed ground As a result, the effect of greatly increasing the pullout resistance of the suction pile anchor by the hook action of the hook member is exerted.

Therefore, by using the suction pile anchor of the present invention, it is possible to reduce the number of suction pile anchors required for fixing and restraining the offshore structure than the conventional case, accordingly the time required for the manufacture, transportation and installation of the suction pile anchor In addition, the cost savings and cost can be economical, efficient, and faster.

In addition, when adopting a configuration capable of retracting the hook member back into the sliding passage, when retrieving the suction pile anchor, it is prevented that the recovery operation is prevented due to the presence of the hook member.

1 is a schematic diagram showing a state in which a conventional suction pile anchor is inserted into a seabed ground, and a suction pile anchor and a marine structure are connected with a connection cable.
2 is a schematic perspective view of a suction pile anchor according to the present invention.
3 is a schematic cross-sectional view showing the inside of the outer flange provided in the suction pile anchor shown in FIG. 2 as an embodiment of the present invention.
Figure 4 is a view corresponding to Figure 3 is a schematic cross-sectional view showing the inside of the outer flange for another embodiment of the present invention consisting of the motor and the gear is the advance member.
FIG. 5 is a schematic cross-sectional view showing the inside of the outer flange for another embodiment of the present invention, in which the advancing member is an explosion member, corresponding to FIG. 3.
FIG. 6 is a schematic perspective view illustrating a hook member protruding from the suction pile anchor shown in FIG. 2.
7 is a schematic cross-sectional view showing a state in which the hook member protrudes in a state in which the suction pile anchor is buried in the sea bed according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Although the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that the technical idea of the present invention and its essential structure and operation are not limited thereby.

2 shows a schematic perspective view of a suction pile anchor 1 according to the invention. FIG. 3 is a schematic cross-sectional view taken along the line AA of FIG. 2 showing the interior of the outer flange 20 provided in the suction pile anchor 1 shown in FIG. 2 as an embodiment of the invention, FIG. FIG. 3 is a schematic cross-sectional view showing the inside of the outer flange 20 for another embodiment of the present invention, in which the advancement member 40 includes a motor and a gear, as shown in FIG. 3. A schematic cross-sectional view showing the interior of the outer flange 20 is shown for another embodiment of the invention in which the advancing member 40 is made of an explosive member as a diagram corresponding to the drawing.

FIG. 6 is a schematic perspective view showing the hook member 30 protruding from the suction pile anchor 1 shown in FIG. 2. 7 is a schematic cross-sectional view showing a state in which the hook member 30 protrudes while the suction pile anchor 1 according to the present invention is embedded in the seabed. In the drawings, reference numerals 100 and 101 denote the offshore structure 100 and the connection cable 101, respectively.

As shown in the drawing, the suction pile anchor 1 according to the present invention has a tubular shape and a hollow body formed therein, and is provided to protrude perpendicularly to the outside of the main body 10. It is configured to include a plate-shaped outer flange 20 having a thickness.

In the present invention, the outer flange 20, the suction pile anchor (1) is embedded in the hook member 30 that protrudes to the side when the penetration into the seabed is embedded in the seabed. Specifically, as shown in FIG. 3, a protruding hole 31 protruding from the hook member 30 is formed at a side surface of the outer flange 20, and the outer flange 20 communicates with the protruding hole 31. Inside, a sliding passage 32 having a curved linear shape is formed in which the hook member 30 slides. The sliding passage 32 is formed in an arc shape that is bent upward from the protrusion hole 31.

In the sliding passage 32, a hook member 30 extending to have a corresponding arc shape is disposed. When the hook member 30 is subjected to a pressing force from the rear by the advancement member 40 which will be described later, the hook member 30 moves while being circularly moved along the sliding passage 32. As the hook member 30 moves along the sliding passage 32, an end portion of the hook member 30 protrudes to the outside of the side surface of the outer flange 20 through the protrusion hole 31 by a predetermined length.

When the hook member 30 protrudes, it is preferable that the protruding end is sharply formed so as to be easily embedded in the sea bed. In addition, the hook member 30 is preferably formed in a tapered shape so that the size of the cross section increases from the protruding end to the inner end. When moving in the direction of the protruding hole 31 by the pressing force from the advancing member 40, as described later, the hook member 30 is caught by the protruding hole 31 to prevent it from protruding excessively out of the outer flange 20 any longer. To do this. Instead of manufacturing the hook member 30 in a tapered form as described above, a stopper (not shown) is formed to protrude in the middle of the hook member 30, so that the hook member 30 is formed on the outer surface of the outer flange 20. When protruding, the length of the hook member 30 protruding out of the outer flange 20 may be limited by preventing the stopper from passing through the protruding hole 31.

In addition, since the hook member 30 is subjected to the bending stress caused by the seabed in the state protruding out of the outer flange 20, the horizontal portion is located upward to efficiently support the bending stress by increasing the bending rigidity of the hook member 30. It is also preferable that the vertical portion is made of a T-shaped cross section of the form facing downward.

In the present invention, the hook member 30 is pressed to the inner end of the hook member 30 so that the hook member 30 moves along the sliding passage 32 so that the end of the hook member 30 is protruding hole 31. Through) the exit member 40 to protrude to the outside of the side of the outer flange 20 is located. An inner end portion of the sliding passage 32 may be formed with a concave installation portion 33 in which the advancing member 40 may be located.

The advancement member 40 may be configured in various forms, in the embodiment shown in Figure 3 consists of a cylinder member that can be stretched the exit member 40. That is, the advancing member 40 consists of the cylinder member which expands and contracts downward by hydraulic pressure, pneumatic, etc. Therefore, when the exit member 40 is operated by the operation signal, the rod of the cylinder member is extended to press the rear of the hook member 30, and the hook member 30 is directed toward the protrusion hole 31 by the pressing force. Pushed to.

In such a configuration, when the rod of the cylinder member and the rear end of the hook member 30 are connected, the rod of the cylinder member can be contracted so that the hook member 30 can be retracted back into the sliding passage 32 in the protruding state, and thus It is also possible to prevent the hook member 30 from becoming an obstacle when the suction pile anchor 1 is drawn off and recovered from the sea bed.

In the case of the embodiment shown in Figure 4, the advance member 40 is composed of a motor (M), and a linear motion gear 44 to linearly move in accordance with the rotation to the motor. In this embodiment, when the motor M rotates, the linear motion gear 44 moves downward by a gear action that converts the rotational force into a linear motion. Accordingly, as in the embodiment shown in FIG. 30 is pushed backward by the linear motion gear 44 is pushed in the direction of the projection hole (31). Even in this case, if the rear end of the linear motion gear 44 and the hook member 30 is connected, the linear motion gear 44 is retracted by rotating the motor M in reverse, and the hook member 30 again slides through the sliding passage 32. ) Can be retracted to the inside, and the hook member 30 can be prevented from becoming obstructed when the suction pile anchor 1 is recovered.

In the case of the embodiment shown in Figure 5, the advance member 40 is composed of an explosive member that exerts the explosive force of the gunpowder 46. That is, the advance member 40 is configured to include the igniter 47 and the gunpowder 46 to push the rear of the hook member 30 by the explosive force of the gunpowder to be pushed toward the protruding hole 31.

 Some embodiments of the advancing member 40 have been described above with reference to the drawings, but the present invention is not limited thereto, and the hook member 30 is pushed toward the protruding hole 31 by pushing the rear of the hook member 30. Branches can adopt various configurations.

When the suction pile anchor 1 according to the present invention having the above configuration sinks in water and touches the ground of the sea bed, it is introduced into the sea bed by forming a negative pressure inside the hollow as in the conventional suction pile anchor. Since the configuration for forming a negative pressure inside the hollow of the suction pile anchor (1) uses a known one, a detailed description thereof will be omitted.

When the lower end of the main body 10 of the suction pile anchor 1 is inserted into the seabed to the required depth, the operation signal is sent to the advancement member 40 in a wired or wireless manner to cause the advancement member 40 to hook the member 30. Operate to push the rear of the unit. In the case of the embodiment shown in Figure 3 is operated to extend the rod of the cylinder member, in the case of the embodiment shown in Figure 4 the motor (M) is operated to move the linear motion gear 44 downward, Figure 5 In the case of the embodiment shown in the gunpowder will explode.

Accordingly, the hook member 30 moves in an arc motion along the sliding passage 32, and as shown in FIGS. 6 and 7, the end of the hook member 30 passes through the protruding hole 31 to the outer flange ( Protruding to the outside of the side of the 20 to a predetermined length, the end of the protruding hook member 30 is laterally embedded in the seabed ground.

Since the hook member 30 is embedded in the seabed in the lateral direction as described above, when the pulling force is applied to the suction pile anchor 1, the pull-out resistance of the suction pile anchor 1 is reduced by the hook action of the hook member 30. It will increase greatly. That is, the pullout resistance exerted per suction pile anchor 1 becomes large. Therefore, it is possible to reduce the number of suction pile anchors (1) necessary for fixing and restraining the offshore structure than in the conventional case, thereby reducing the time and cost required to manufacture, transport and install the suction pile anchors (1) It has the advantage of being economical, efficient and quicker construction.

In particular, in the case of the embodiment shown in FIGS. 3 and 4, the hook member 30 can be retracted back into the sliding passage 31, so that when the suction pile anchor 1 is withdrawn, The presence prevents disturbances in the recovery operation.

On the other hand, as shown in the lower surface of the outer flange 20, it is advantageous to have a shape that the width of the outer flange 21 is narrowed downward, it is advantageous that the outer flange 20 is easily inserted into the seabed ground.

1: suction pile anchor, 10: main body, 20: outer flange, 30: hook member
40: exit member

Claims (7)

As a suction pile anchor (1) to penetrate the seabed ground,
It comprises a main body (10) having a tubular shape and a hollow formed therein, and a plate-shaped outer flange (20) provided to protrude perpendicularly to the outside of the main body (10);
In the interior of the outer flange 20, a sliding passage 32 is formed in communication with the protrusion hole 31 formed on the side of the outer flange 20, the sliding passage 32 is the protrusion hole 31 Consisting of an arc shape, starting from b) and bending upward;
The sliding passage 32 has a shape that extends long to have an arc shape corresponding to the shape of the sliding passage 32, and in the process of the suction pile anchor 1 penetrates into the sea bottom, an outer flange ( 20 is located inside the sliding passage 32 so as not to protrude to the outside, and when the suction pile anchor 1 is infiltrated into the seabed, it moves by the pressing force to protrude toward the side of the outer flange 20. A hook member (30) to be embedded in the seabed ground and an advance member (40) for applying a pressing force against the hook member (30) from the rear of the hook member (30);
A concave mounting portion 33 is formed at an inner end of the sliding passage 32 at the rear end of the hook member 30, so that the exit member 40 is disposed in the concave mounting portion 33;
As the suction pile anchor 1 touches the ground of the seabed, the exit member 40 pushes the rear of the hook member 30 with a pressing force while the lower end of the main body 10 penetrates into the seabed. 30 moves along the sliding passage 32 in the outer flange 20 and moves toward the outside of the outer flange 20 through the protruding hole 31 formed at the side of the outer flange 20. Suction pile anchor, characterized in that having a configuration that protrudes to be laterally embedded in the seabed ground.
delete The method of claim 1,
The protruding end of the hook member 30 is pointed;
When the hook member 30 moves in the direction of the protruding hole 31 by the pressing force from the advance member 40, the hook member 30 is prevented from excessively protruding out of the outer flange 20. 30 is a suction pile anchor, characterized in that formed in a tapered form so that the size of the cross-section toward the inner end from the protruding end.
The method according to claim 1 or 3,
The advance member 40 is composed of a cylinder member having a rod that can be stretched downwards,
Suction pile anchor, characterized in that for sliding the hook member 30 as the rod is stretched.
The method according to claim 1 or 3,
The advance member 40 is composed of a motor (M), and a linear motion gear 44 that linearly moves in accordance with the rotation of the motor,
Suction pile anchor, characterized in that when the motor (M) is rotated by the gear action to convert the rotational force into a linear motion to move the linear motion gear (44) downward downward to slide the hook member (30).
The method according to claim 1 or 3,
The advancing member 40 is composed of an igniter and an explosive member including explosives exploded by the operation of the igniter to exert an explosive force,
Suction pile anchor, characterized in that to push the rear of the hook member 30 by the explosive force of the gun to push toward the protrusion hole (31).
As a construction method of injecting and installing the suction pile anchor (1) in the seabed ground,
It comprises a main body (10) having a tubular shape and hollow formed therein, and a plate-shaped outer flange (20) having a thickness and protruding perpendicular to the outside of the main body (10); In the interior of the outer flange 20, the sliding passage 32 made of an arc shape in communication with the protrusion hole 31 formed on the side of the outer flange 20, starting from the protrusion hole 31 is bent upwards. Is formed, the sliding passage 32 has a shape that extends long to have an arc shape corresponding to the shape of the sliding passage 32, and in the process of the suction pile anchor 1 penetrates the sea bed The end is located inside the sliding passage 32 so as not to protrude to the outside of the outer flange 20, and when the suction pile anchor 1 penetrates into the sea floor, it moves by pressing force to the side of the outer flange 20. The hook member 30 protruding to be embedded in the seabed ground, and the exit member 40 for applying a pressing force against the hook member 30 from the rear of the hook member 30 is built-in In the sliding passage 32, an inlet portion 33 is formed at the inner end of the sliding member 32 to the rear end of the rear end of the hook member 30, and the suction member 40 is disposed at the indentation portion 33. The pile anchor (1) so that the end of the hook member (30) is submerged in the water without protruding out of the outer flange (20) to be placed on the sea bed;
Pressure-reducing the inside of the hollow body of the suction pile anchor (1) so that the suction pile anchor (1) penetrates into the sea bed; And
The suction pile anchor 1 is pushed to the rear of the hook member 30 by operating the exit member 40 in a state in which the suction pile anchor 1 is inserted into the seabed, the hook member 30 is moved in the outer flange 20 Suction pile anchor, characterized in that the end is projected to the outside of the side of the outer flange 20 through the protruding hole 31 formed on the side of the outer flange 20 so as to be laterally embedded in the seabed ground Construction method.

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