KR101205620B1 - Apparatus and Method for Intruding a Pile with Different Lengths into Irregular Sea-Bed - Google Patents

Abstract

PURPOSE: An apparatus and a method for inserting piles with various lengths into an irregular seabed are provided to stably insert a pile into the ground regardless of the length or diameter of the pile. CONSTITUTION: An apparatus for inserting piles with various lengths into an irregular seabed comprises a horizontal body(200), a pile transfer unit(310), a drilling device(400), and a position adjusting unit(350). The horizontal body has multiple support legs(220). The pile transfer unit transfers a pile vertically to the horizontal body. The drilling device compresses the pile and is rotated with the pile. The drilling device comprises a drum body, a frame, and a rotating unit. The drum body repetitively compresses and decompresses the pile. The frame surrounds the drum body. The rotating unit rotates the drum body. The position adjusting unit adjusts the position of the drilling device.

Description

Apparatus and Method for Intruding a Pile with Different Lengths into Irregular Sea-Bed}

The present invention relates to a device and a method for penetrating piles of various lengths on a steeply inclined seabed, and more particularly, to a device and a method for penetrating and installing a pile vertically down the sea bed.

In general, when various types of large-scale structures such as wind power towers are installed on land or offshore, a method of driving a pile to fix the substructure of the structure to the ground is used. In particular, in the case of installation at sea, in the case of the shallow sea where the depth of the sea bottom is suitable for piling, considering the various factors such as horizontal load and vertical load according to the shape, weight, and structural dynamics of the marine structure, A monopile type lower structure is installed and an offshore structure is installed on top.

The monopile type (monopile type) has the advantage of being able to secure the lower structure firmly to the ground or the sea floor with the simplicity of pile manufacturing and the single piling process, in accordance with the peculiarity of the single pile method. In case of unevenness, it is necessary to go through the process such as soil reinforcement or geological improvement to secure the required depth of navigation, or to increase the size of the pile or to carry out deeper depth of pilot. shall.

In addition, the pile to be installed in the ground in order to fix the lower structure of the offshore structure to the ground (pile) may vary in length or length.

Therefore, there is a need for a study on a technology that can stably install piles on the ground without being restricted by various apertures or lengths.

SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus and a method for injecting files of various lengths into a rapidly inclined seabed that can stably install a file on the ground without being limited by the length or diameter of the file.

According to an embodiment of the present invention to achieve the above object, a pile penetration device, comprising: a horizontal body having a plurality of support legs seated on the ground surface; File transfer unit for transferring the file perpendicular to the horizontal body; A drilling device for compressing the pile to rotate with the pile; And a position adjusting portion for adjusting the position of the drilling device with respect to the ground surface.

The drilling device, the drum body for repeatedly performing the crimping and decompression state of the pile; A rotating part to rotate the drum body; And a frame disposed outside the drum body to maintain a fixed state.

The rotating part includes a gear and a motor for rotating the gear, and the gear may rotate by engaging a thread formed on an outer circumferential surface of the housing.

The drum body includes a housing in which a pile insertion hole into which the pile can be inserted is formed; A cylinder housed inside the housing; And a stopper accommodated in the cylinder and drawn out toward the center of the pile insertion hole to compress the pile or to be inserted into the housing to release the pressing state of the pile.

One side of the cylinder is provided with a first fluid transport pipe for the inflow and outflow of the fluid, a valve is provided at one end of the first fluid transport pipe and a perforation hole is formed from the valve to the outside of the housing, An outer side of the housing may be provided with a hydraulic connection connector connected to or spaced from the valve.

The frame is provided with a connector accommodating part for accommodating the hydraulic connection connector, and the connector accommodating part and the housing are provided with position sensors, respectively, so that the hydraulic connection connector may be connected to the valve when the position sensors face each other.

The position adjusting unit may lower the drilling apparatus to the ground surface when the drilling apparatus rotates to penetrate the pile, and lift the drilling apparatus when the rotation is stopped.

The position adjusting unit includes: a hydraulic jack for extending or contracting a rod to raise and lower the drilling apparatus with respect to the ground surface; An upper fixing part coupled to one side of the hydraulic jack; And it may include a lower fixing portion coupled to the other side of the hydraulic jack.

According to another aspect of the present invention, a method of penetrating a pile using the pile penetration device, comprising the steps of: seating the horizontal body on the ground surface to penetrate the pile; Moving the pile and the drilling device to the ground surface; Moving the drilling device in an upward direction relative to the ground surface; Controlling the drilling device to compress the pile; Rotating the drilling device; And stopping the rotation of the drilling device and moving the pile and the decompressed drilling device in an upward direction with respect to the ground surface when the drilling device moves downward by a predetermined position. This is provided.

According to another aspect of the present invention, a file penetration device, a file insertion hole is formed and the drum body repeatedly performing the crimping and decompression state of the pile; A rotating part for rotating the drum body in a crimped state of the pile; And a frame disposed outside the drum body to maintain a fixed state.

According to one embodiment of the present invention, it can be applied to the drilling operation of the pile having various apertures.

In addition, according to an embodiment of the present invention, the file can be stably installed on the ground without being restricted by the file length.

1 is a view showing a pile penetration device for installing a marine structure according to an embodiment of the present invention.
2 to 5 are diagrams showing the detailed configuration of the file penetration device according to an embodiment of the present invention.
6 is a view showing the internal structure of a drilling device according to an embodiment of the present invention.
7 is a plan view of a drilling apparatus according to an embodiment of the present invention.
8 is a view showing a state before the hydraulic connection connector is connected to the drilling apparatus according to an embodiment of the present invention.
9 is a view showing a state in which the hydraulic connection connector is connected to the drilling apparatus according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described for the pile penetration device for installing the offshore structure related to an embodiment of the present invention. Examples of offshore structures include tidal current generators and wind generators. In addition, the structure may also include a file used for installing a tidal current generator, a wind generator.

1 is a view showing a pile penetration device for installing the offshore structure related to an embodiment of the present invention.

As shown in FIG. 1, the pile penetration device 100 for installing the structure may be used to penetrate the pile into the offshore ground.

The pile penetration device 100 may include a horizontal body 200, an insertion tube 210, a support leg 220, a pile 300, a pile feeder 310, a position adjuster 350, and a drilling apparatus 400. Can be.

The horizontal body 200 is a member positioned horizontally with respect to the sea level. The horizontal body 200 may be formed by connecting a plurality of beam members placed on the same plane. In addition, the horizontal body 200 may be formed by assembling the beam member, or may be formed of a plate-like member.

Insertion tube 210 may be formed in a vertical direction with respect to the horizontal body 200. The insertion tube 210 has a hole formed therein and the upper and lower portions are opened. The shape of the hole may vary. For example, the cross section of the hole may be formed in a circle, or may be formed in a polygon. Therefore, the support leg 220 may be inserted into the insertion tube 210. The number of insertion pipes 210 may correspond to the number of support legs 220.

The support leg 220 is used to fix the horizontal body 200 to the sea level in a horizontal state, it is inserted into the insertion pipe 210 can be raised and lowered.

The insertion pipe 210 side is provided with a roller (not shown) and a stopper (stopper, not shown), the support leg 220 is raised and lowered along the roller, the stopper is pressed by the support leg 220 the support leg 220 ) Is fixed at a predetermined position.

The pile 300 may be formed in a direction perpendicular to the horizontal body 200. The pile 300 descends with respect to the horizontal body 200 through the pile transfer unit 310 and descends to the ground surface.

In more detail, the roller feeder 310 may be provided with a roller and a stopper similarly to the support leg 220. The pile 300 descends while being guided by the roller, and when the pile 300 descends to a desired position, the stopper compresses and fixes the pile 300.

After the pile 300 descends to the ground surface, the position adjusting unit 350 moves the position of the drilling apparatus 400, and after the position adjustment is completed, the drilling apparatus 400 rotates the pile 300 to penetrate the ground. .

The position adjustment process will be described in detail below.

2 to 4 are diagrams showing the positional change of the drilling device 400 for rotating the pile 300.

2 shows an initial state of the drilling device 400 according to the present embodiment, and FIG. 3 is a view showing a state immediately before descending to the ground surface of the drilling device 400, and FIG. 4 is a drilling device 400. Is a view showing a state descended to the ground surface.

2 to 4, the position adjusting unit 350 according to the present exemplary embodiment may include an upper fixing unit 352, a lower fixing unit 354, and a hydraulic jack 355.

The hydraulic jack 355 may include a cylinder 356 and a rod 358.

One end of the rod 358 is coupled to the upper fixing portion 352 according to the present embodiment, and one end of the cylinder 356 is coupled to the lower fixing portion 354.

However, it will be apparent to those skilled in the art that one end of the cylinder 356 may be coupled to the upper fixing portion 352 and one end of the rod 358 may be coupled to the lower fixing portion 354.

Here, the cylinder 356 may be a hydraulic cylinder that operates hydraulically, the rod 358 is provided in a piston or plunger type to contract or expand as the fluid enters / outflows in the cylinder 356.

In the initial state as shown in FIG. 2, when the rod 358 is in a contracted state and the drilling apparatus 400 descends to the ground surface, the rod 358 is extended by the fluid outflow inside the cylinder 356.

On the other hand, the support 360 is provided on the upper portion of the upper fixing part 352 according to the present embodiment.

The support part 360 is accommodated in the pile feeder 310 in the initial state as shown in FIG. 2, but is separated from the pile feeder 310 when the drilling apparatus 400 descends to the ground surface, together with the upper fixing part 352. Descend.

The position adjusting part 350 according to the present embodiment is further provided with a guide part 362.

The guide part 362 guides the drilling apparatus 400 to move up and down in a direction perpendicular to the horizontal body 200.

The guide part 362 may include a guide body 364 which is connected to the outer surface of the drilling apparatus 400 to form a guide hole, and a guide beam 366 inserted into the guide hole. The guide beam 366 may be raised and lowered along the guide body 368. Since the guide body 364 is formed on the outer surface of the drilling device 400, the drilling device 400 may also be raised and lowered integrally with the guide body 364.

The lower portion of the lower fixing part 354 according to the present embodiment is provided with a seating portion 366 that is seated on the ground surface when the drilling device 400 is lowered.

After the seating portion 366 is seated on the ground surface in the same state as in FIG. 4, as shown in FIG. 5, the rod 358 contracts and the drilling apparatus 400 moves upward.

As described below after the upper movement of the drilling apparatus 400, the stopper 415 formed in the drilling apparatus 400 compresses the pile 300.

Hereinafter, the internal structure and operating principle of the drilling apparatus 400 will be described with reference to FIGS. 6 to 9.

6 to 7 is a view showing a detailed configuration of a drilling device according to an embodiment of the present invention.

As shown in FIGS. 6 to 7, a pile insertion hole is formed in the drilling apparatus 400 according to the present embodiment, and the pile 300 penetrates into the pile insertion hole. In more detail, the drilling apparatus 400 includes a drum body 410 having a pile insertion hole, a frame 420 surrounding the outside of the drum body 410, a rotating part 430 for rotating the drum body 410, and a bearing ( 400).

The drum body 410 has a pile insertion hole into which the pile 300 is inserted, and moves to the pile insertion hole to compress the pile 300, or moves inward to the drum body 410, so that the pile 300 has a pile insertion hole. A housing 411 is provided that includes a stopper 415 for releasing the crimp.

Although not shown in the drawings, a roller for moving the pile 300 may be additionally provided at the pile insertion hole side of the drum body 410 according to the present embodiment.

2 to 4, when the drilling apparatus 400 descends to the ground surface, the stopper 415 is brought into the housing 411. As shown in FIG. 5, the stopper 415 is pulled out to the side of the pile insertion hole at the position for rotating the pile 300 to compress and fix the pile 300.

The operation of the stopper 415 can be controlled by the inflow and outflow of the hydraulic pressure.

As the stopper 415 pulls in and out, the drilling device 400 can be positioned independently of the pile 300 or can be rotated or moved with the pile 300.

As described above, in the position as shown in FIG. 5, the drum body 410 is rotated by the rotating part 430, and the drum body 410 and the pile 300 are formed because the stopper 415 compresses the pile 300. ) Rotates integrally. By this rotation, the pile 300 may be introduced into the ground.

The rotating part 430 may include a gear 431 and a motor 432 for rotating the gear 431.

The gear 431 meshes with a thread 413 formed along the outer circumference of the housing 411 to rotate the housing 411.

The frame 420 is located outside the housing 411 and remains fixed without rotation.

A bearing 440 is provided between the inside of the frame 420 and the outside of the housing 411. More specifically, the bearing 440 may be located between the outer circumferential surface of the housing 411 of the drum body 410 and the gear to allow the drum body 410 to rotate smoothly.

According to one embodiment of the present invention, while the drum body 410 rotates while the pile 300 is fixed, the rod 358 located outside the drum body 410 is extended.

By extension of the rod 358, the drilling device 400 is adjusted from the position as shown in FIG. 5 to the position as shown in FIG. As described above, since the drum body 410 descends while rotating with the pile 300, the pile 300 may be introduced into the ground.

After the drum device 410 has been elongated by the preset length of the rod 358, preferably after being elongated to the threshold (after moving downward in the predetermined position), the drum body 410 stops rotating. .

This stop rotation is to move the drum body 410 in the upper direction of the pile 300 with respect to the ground surface. The drum body 410 is located at the top of the ground surface immediately before the rotation as shown in FIG. 5, and as the rod 358 extends, the drum body 410 gradually moves to a position adjacent to the ground surface.

In order to continuously infiltrate the pile 300 into the ground, the drum body 410 should be located above the ground surface. Accordingly, after the rod 358 is extended by the maximum length, the drum body 410 stops rotating, and the stopper 415 releases the pressing state of the pile 300.

After the crimp is released, the drilling device 400 including the drum body 410 moves upwardly from the ground surface due to the contraction of the rod 358.

After the contraction of the rod 358 is completed, the stopper 415 is pulled out and the pile 300 is compressed.

After the compression of the pile 300 is completed, the drum body 410 is rotated, and with the rod 358 extended, the drum body 410 moves in the ground surface direction.

As described above, the insertion and withdrawal of the stopper 415 is repeatedly performed for penetration of the pile 300.

Hereinafter, a process of operating the stopper 415 by controlling the inflow of fluid.

8 to 9 are views showing in detail the configuration of the drilling device for the stopper control according to the present embodiment.

As shown in FIGS. 8 to 9, a cylinder 800 into which a fluid flows in or out while receiving the stopper 415 and the stopper 415 in the housing 411 of the drilling apparatus 400 according to the present embodiment. Is provided.

One side of the cylinder 800 is connected to the first hydraulic feed pipe 802. A valve 804 is provided at one side of the first fluid transfer pipe 802, and a perforation hole 806 is formed in the valve 804 in an outward direction of the housing 411.

According to an embodiment of the present invention, the frame 420 has one of the inflow of the fluid into the cylinder 800 to withdraw the stopper 415, or the fluid from the cylinder 800 to flow out of the stopper 415 The above hydraulic connection connector 600 is provided.

As shown in FIG. 6, the frame 420 according to the present exemplary embodiment may have an open shape at an outside thereof, and the connector accommodating part 602 for supporting the hydraulic connection connector 600 at a part of the open portion. Is provided.

The hydraulic connection connector 600 is supported by the connector accommodating part 602 while being spaced apart from the housing 411 of the drum body 410, and then needs to be pulled in or pulled out of the stopper 415 by the housing 411. To the side.

8 to 9, the hydraulic connection connector 600 according to the present embodiment includes a second fluid transfer pipe 810 that may be connected to the valve 804 on the drilling hole 806.

According to the present embodiment, a position sensor 808 is provided outside the connector receiving portion 602 and the cylinder 800 provided in the frame 420, respectively.

The pair of position sensors 808 are for detecting whether the second fluid transfer pipe 810 and the valve 804 of the hydraulic connection connector 600 are in a position to engage with each other.

According to this embodiment, the drum body 410 is rotated for the penetration of the pile 300, the frame 420 is fixed, so the position of the second fluid transfer pipe 810 and the valve 804 is May vary continuously.

When control of the stopper 415 is required, the drum body 410 rotates, and the position sensor 808 attached to the cylinder 800 and the position sensor 808 mounted on the connector receiving portion 602 face each other. When the viewing state, the hydraulic connection connector 600 is moved to the drum body 410 side.

When the fluid flows in the state in which the second fluid transfer pipe 810 is in contact with the valve 804, the stopper 415 is pulled out to compress the pile 300, and the stopper (rotation) of the drum body 410 rotates. 415 and the pile 300 may be integrally rotated.

On the other hand, when the fluid flows from the cylinder 800 to the fluid connection connector 600 in the state in which the second fluid transfer pipe 810 is in contact with the valve 804, the stopper 415 is introduced to the pile 300 Release the crimp.

As described above, through the repetition of the lifting and lowering motion of the drilling apparatus 400, the pile 400 may be stably inserted into the ground without being restricted by the length.

In addition, the stopper 415 may be adjusted through its inflow and outflow of the fluid, so that the stopper 415 may infiltrate the pile without being limited by the diameter of the pile.

The support mechanism for installing the structure as described above is not limited to the configuration and method of the embodiments described above, the embodiments may be selectively all or part of each embodiment so that various modifications can be made It may be configured in combination.

100: file penetration device 200: horizontal body
210: insertion tube 220: support leg
300: file 310: file transfer unit
350: positioning unit 400: drilling device
410: drum body 411: housing
420: frame 430: rotating part
431 gear 432 motor
440: bearing 600: hydraulic connection connector
602: support 800: cylinder

Claims (12)

As a file penetration device,
A horizontal body having a plurality of support legs seated on the ground surface;
File transfer unit for transferring the file perpendicular to the horizontal body;
A drilling device for compressing the pile to rotate with the pile; And
Includes a position adjuster for adjusting the position of the drilling device relative to the ground surface,
The drilling apparatus includes a drum body repeatedly performing the crimping and decompression state of the pile, a rotating part for rotating the drum body, and a frame disposed outside the drum body to maintain a fixed state,
The drum body has a housing in which a pile insertion hole into which the pile can be inserted is formed, a cylinder accommodated in the housing, and is drawn in the cylinder and drawn out in the direction of the center of the pile insertion hole to compress or pile the pile into the housing side. And a stopper for releasing the crimp of the file,
One side of the cylinder is provided with a first fluid transport pipe for the inflow and outflow of fluid, a valve is provided at one end of the first fluid transport pipe and a perforation hole is formed out of the housing from the valve, Pile penetration device provided on the outside of the housing is provided with a hydraulic connecting connector connected to or spaced from the valve. delete The method of claim 1,
The rotating part includes a gear and a motor for rotating the gear,
And the gear rotates in engagement with a thread formed on an outer circumferential surface of the housing. delete delete The method of claim 1,
The frame is provided with a connector receiving portion for receiving the hydraulic connection connector,
And a position sensor is provided in the connector receiving portion and the housing, respectively, so that the hydraulic connection connector is connected to the valve when the position sensors face each other. The method of claim 1,
And the position adjusting unit lowers the drilling apparatus to the ground surface when the drilling apparatus rotates to penetrate the pile, and lifts the drilling apparatus when the drilling apparatus stops rotating. The method of claim 7, wherein
The position adjustment unit,
A hydraulic jack that extends or retracts the rod to raise and lower the drilling device relative to the ground surface;
An upper fixing part coupled to one side of the hydraulic jack; And
Pile penetration device including a lower fixing portion coupled to the other side of the hydraulic jack. A file penetration method using the file penetration device according to claim 1,
(a) seating the horizontal body on a ground surface to infiltrate the pile;
(b) moving the pile and the drilling device to the ground surface;
(c) moving the drilling device in an upward direction relative to the ground surface;
(d) controlling the drilling device to compress the pile;
(e) rotating the drilling device;
(f) stopping the rotation of the drilling device and moving the pile and the decompressed drilling device upwards relative to the ground surface when the drilling device moves downward by a preset position; And
And repeating steps (c) to (f) while the file is intruded. As a file penetration device,
A drum body having a pile insertion hole formed therein and repeatedly performing a crimping and a crimping release state of the pile;
A rotating part for rotating the drum body in a crimped state of the pile; And
It includes a frame disposed on the outside of the drum body to maintain a fixed state,
The drum body,
A housing having a file insertion hole through which the file can be inserted;
A cylinder housed inside the housing; And
A stopper accommodated in the cylinder and drawn out in the direction of the center of the pile insertion hole to press the pile or to the housing to release the pressing state of the pile;
One side of the cylinder is provided with a first fluid transport pipe for the inflow and outflow of fluid, one end of the first fluid transport pipe is provided with a valve and a perforation hole is formed out of the housing from the valve,
Pile penetration device provided on the outside of the housing is provided with a hydraulic connecting connector connected to or spaced from the valve. delete delete

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