KR20170139750A - Suction pile having exterior support amd it's installation method - Google Patents

Abstract

The present invention relates to a suction paddle having an outer support for preventing an eccentricity due to a pulling load by arranging an outer support in the form of a pile on the outside of a suction pouch body, and a method of installing the suction paddle, wherein the upper end is closed by the upper plate, An outer support member provided outside the suction pouch body to allow the suction pouch body to be slidable, and an outer support member provided outside the lower portion of the suction pouch body, wherein the suction pouch body is formed of a hollow cylindrical cylinder whose side portion is surrounded by a wall of a cylindrical shape, And includes an electromagnet fixing portion to be installed.
According to another aspect of the present invention, there is provided a method of installing a suction pile having an external support, the method comprising: a suction pile having an external support on the outside of the suction pile body; A step in which the pedestal is partially penetrated to the bottom of the sea by its own weight and a portion of the pedestal is partially penetrated to the bottom of the sea, and the suction file body is brought into contact with the sea floor by its own weight, A step of introducing the suction pouch body into the lip of the suction pouch body; a step of bringing the guide member of the external support into contact with the upper plate of the suction pouch body while the suction pouch body is intruded; The installation of the suction file is completed by introducing the external support along with the suction file body The.

Description

Technical Field [0001] The present invention relates to a suction file having an external support and an installation method thereof,

The present invention relates to a suction pile having an external support and a method of installing the same. More particularly, the present invention relates to a suction pile having an external support such that a pile-shaped external support is disposed outside the suction pile body, The present invention relates to a suction file and a method of installing the same.

Generally, Suction Pile refers to a file installed by using a pressure difference between the inside and outside of a file generated by discharging a fluid such as water or air inside the file to the outside.

It has been used on the sea floor and is used for marine fixed and floating structure supports or anchors such as oil drilling platforms, offshore wind power bases.

FIG. 1 is a photograph of a conventional suction file, and FIG. 2 is a conceptual view showing a penetration state of a conventional suction file as a longitudinal section.

As shown in Figs. 1 and 2, the shape of the suction file 1 is such that the upper end is closed by the upper plate and the lower end of the cup is folded down so that suction pressure can be easily applied. The largest one of the suction piles (1) constructed to date is 32m in diameter and 37m in length, and is constructed on the sea floor at depths of 300m and used as the foundation of the oil drilling platform. At this time, the suction file (1) may have a discharge port and an injection port on the top plate or side surface of the upper part for discharging and injecting water, and a ring for use as a point of action in drawing may be provided at the center or the side of the upper part.

As shown in Fig. 2, the installation mechanism of the suction file 1 is as follows. When the suction file 1 is placed on the submarine layer 7, the lower end of the file is intruded to the submarine layer 7 to a certain depth by the self weight of the file. In this state, the water in the suction file (1) is drained to the outside by using a drainage device installed on the head of the suction file (1). Since the structure of the suction file 1 except for the lower end of the file is completely blocked by the water flow, the drainage water can be introduced only through the seabed layer 7 at the lower end of the suction paddle 1. However, since the permeability of the seabed ground is very low, the drainage water is prevented from being introduced and restored, so that the pressure inside the suction paddle 1 is lower than the pressure outside the suction paddle 1. As a result, a pressure difference between the inside and the outside of the suction file 1 is generated, and thereby the suction file 1 is intruded.

These suction files can be installed regardless of the size of the suction file. (1) The installation equipment is simple, and there is an example of installation at a depth of 1600m at maximum without being restricted by the depth of water. (2) (3) The installation speed is fast enough to allow installation of 1 unit in a few hours. (4) The water can be drawn into the suction file and the pressure can be pulled out. (5) It is advantageous in that the penetration resistance is reduced by the seepage of the seabed layer at the lower end of the suction pavement when installed.

In addition, the structure using such a suction file can be installed (1) regardless of the depth of water, (2) can be installed in a short period of 1 to 2 days, and can be installed in a submarine ground, (3) Since the inside of the suction file becomes airtight after installation, suction pressure is generated in the suction file due to the drawing, and the suction pressure acts as resistance force (or ground force) (4) there is no need to improve the ground (especially, there is a soft ground in the surface layer and a glass layer in the lower layer, which is sandy soil in the lower layer), (5) the preceding load and the load There is an advantage of being able to experiment.

In such a suction file, there is a possibility that the suction file is eccentric due to the drawing load when the structure is installed. This is because the pull-out force corresponding to the pull load is generated only by the outer wall of the conventional suction file. Once it is eccentric, it is very difficult to solve, and installing the structure in such a state that the shaft is not maintained will cause problems in operation of the equipment.

Conventionally, US 6,227,138 B1, WO 1999022983 A1, EP 2 049 388 B1 and the like have been disclosed in relation to suction files. However, these prior arts also suffer from the drawback supporting force generated only by the cylindrical wall body, so that the problem that the structure is provided in the suction pile to cause a problem in the pulling supporting force corresponding to the pulling load when the load is applied,

For this purpose, it is possible to suggest a method of forming a structure on the outer, outer, or top plate of the suction file, but the drawability of the structure may be deteriorated due to the increased penetration resistance due to the structure.

Also, it is possible to propose a method of inserting a pile-type support into the suction pile after the suction file is inserted. This is because the process of inserting the pile is further added, If the suction is not performed at the same time, there is a disadvantage that the penetration resistance is greatly increased when the pile is inserted. Also, unlike the case of inserting a suction file, there is no pipe input driven by the pressure difference between inside and outside by suction. Therefore, a stronger tube input is required than when a suction file is inserted. In addition, if the pile insertion space is not separately formed during the pile insertion, it is more difficult to insert the inserted pile vertically than by inserting the suction pile. Even if the pile inserting space is separately constructed, there is a disadvantage that the workability is lowered because the pile can be easily inserted only when a device capable of disturbing the bottom layer is provided.

Also, it is possible to provide a submarine floor disturbance device with an internal camera inside the suction file, but it has a disadvantage in that it is complicated in structure, is expensive to manufacture, has a long manufacturing period, and is difficult to manufacture.

Therefore, there is a need for a suction file that can minimize the penetration resistance while improving the pull-out support force and minimizing the construction steps and has a simple structure.

US 6,227,138 B1 WO 19999022983 A1 EP 2 049 388 B1

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 a suction pile- And an external support for preventing eccentricity of the suction file due to the eccentricity of the suction file.

According to an aspect of the present invention, there is provided a suction file having an outer support, the suction file having an upper end closed by an upper plate, a lower end opened, and a side surrounded by a wall of a cylindrical surface, And an electromagnet fixing unit installed outside the suction pouch body to allow the suction pouch body to be slidable, and an electromagnet fixing unit provided outside the lower portion of the suction pouch body.

The outer periphery of the upper plate may be provided with a locking protrusion so as to protrude from the outer periphery of the wall so that the suction pouch body is not detached from the outer support.

The outer support includes a guide member for supporting and guiding the suction pouch body while enclosing the outside of the suction pouch body, and a pedestal for supporting the suction pouch body while being penetrated through the underside of the outer side lower portion of the guide member .

The pedestal may be installed at a plurality of positions on the outer lower side of the guide member at regular intervals so as to stably support the suction pod body without eccentricity.

The length of the pedestal may be shorter than the length of the suction pouch body to minimize penetration resistance of the suction pouch body.

The thickness of the pedestal may be the same as the wall thickness of the suction pouch body.

The pedestal may be provided in a 'T' or '+' shape to increase the bending resistance at the time of penetration.

The electromagnet fixing portion may be installed at a plurality of outer circumferential portions of the lower portion of the suction pouch body at regular intervals.

According to another aspect of the present invention, there is provided a method of installing a suction file having an external support, the method comprising: a suction file having an external support on the outside of the suction file body, Wherein the bottom of the bottom portion is partially penetrated by the bottom surface of the bottom by the weight of the bottom portion of the bottom surface of the bottom portion of the bottom portion of the bottom surface of the bottom portion, A step in which the file body is intruded into the undersea lip, a step in which the guide member of the outer support is brought into close contact with the upper plate of the suction file body while the suction file body is intruded, The outer support is introduced with the suction file body by the tube input of the suction file body, and the installation of the suction file is completed Step < / RTI >

The electromagnet fixing unit may be installed at a lower portion of the suction pawl body so that the suction pawl body and the outer supporting pawl can be integrated by the electromagnet fixing unit at an early stage when the external support pawl touches the seabed surface and is partially penetrated by the self weight.

In the step where the suction file body is brought into contact with the sea floor due to its own weight and is intruded into the seabed by the suction pressure, after the suction file body is partially penetrated, the electromagnet fixing part is turned off, And can be penetrated into the sea floor.

The guide member is hooked by the hooking jaw provided on the outer periphery of the upper plate so that the suction file body is dislodged from the outer support member in the step of contacting the upper plate of the suction file body and the guide member of the outer support while the suction file body is intruded, No external support can be introduced with the suction file body.

As described above, according to the suction pile having the outer support according to the present invention and the method of installing the same, the pile-shaped outer support is installed outside the suction pile body, thereby improving the pulling force without increasing the penetration resistance. The pull-out support force repulsive to the pull-out load is improved and the eccentricity can be prevented.

Further, the present invention can increase the eccentricity and pull-out resistance cross-sectional area without adding a structure inside a suction file, thereby reducing the cost of equipment required for the addition of internal structures, and facilitating the production of suction files It is effective.

1 is a photograph showing a conventional suction file.
FIG. 2 is a longitudinal sectional view showing a state in which a conventional suction file is intruded.
3 is a perspective view illustrating a suction file having an external support according to the present invention.
4 is an incision oblique view of a suction file with an external support according to the present invention.
5 is a front view of a suction file with an external support according to the present invention.
6 is a process diagram illustrating a method of installing a suction paddle with an external support according to the present invention.
7 is a block diagram illustrating a method of installing a suction paddle with an external support according to the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a perspective view showing a suction file having an external support according to the present invention, FIG. 4 is an exploded perspective view of a suction file having an external support according to the present invention, FIG. 6 is a process diagram showing a method of installing a suction file having an external support according to the present invention, and FIG. 7 is a view illustrating a method of installing a suction file having an external support according to the present invention Block diagram.

3 to 5, a suction file 100 having an external support according to the present invention includes a suction file body 200, an external support 300, and an electromagnet fixing unit 400 do.

The suction pouch body 200 is formed of a hollow cylindrical body surrounded by a wall body 210 having a cylindrical surface.

In addition, the lower end of the suction pouch body 200 is opened, and the upper part of the suction pouch body 200 is provided at the upper end of the wall body 210 to close the upper part.

A hook 230 is provided around the outer periphery of the upper plate 220 to prevent the suction pawl body 200 from coming off the outer support 300.

At this time, the latching jaws 221 protrude outward from the outer periphery of the wall body 210.

That is, the upper plate 220 is blocked by the upper part of the suction file body 200, and when the suction file body 200 is inserted into the sea floor 10, the outer support 300 is hooked on the catching jaws 221, The file body 200 is not detached from the external support 300 so that the external support 300 can be penetrated into the sea floor 10 together with the suction file body 200.

The outer support 300 is installed outside the suction file body 200 to allow the suction file body 200 to slide.

The outer support 300 includes a guide member 310 that surrounds the outside of the suction file body 200 and a pedestal 320 that is installed on the outer lower side of the guide member 310.

The guide member 310 is provided outside the suction file body 200 to support the suction file body 200.

In addition, the guide member 310 can guide the suction file body 200 downward so that the suction file body 200 can be penetrated to the bottom surface 10 by its own weight.

The pedestal 320 is installed at a lower portion of the outer side of the guide member 310 and is inserted into the seabed surface 10 while supporting the suction file body 200.

In addition, the pedestal 320 is provided at a predetermined interval in the lower outer side of the guide member 310 so as to stably support the suction file body 200 without eccentricity.

That is, a plurality of pedestals 320 are provided on the lower portion of the guide member 310, so that the pedestal 320 can stably support the suction pouch body 200 loaded in the guide member 310 without eccentricity.

The length of the pedestal 320 may be shorter than the length of the stone pile body 200 to minimize penetration resistance of the suction pile body 200.

It is preferable that the thickness of the pedestal 320 is the same as the thickness of the wall 210 of the suction pouch body 200.

The pedestal 320 is shorter than the length of the suction paddle 200 and has the same thickness as the wall 210 to minimize the resistance when the suction paddle 200 penetrates into the sea floor 10 So that the suction file body 200 can be smoothly penetrated into the sea floor 10.

The pedestal 320 is provided in a 'T' shape so as to improve the bending resistance when penetrating into the seabed surface 10.

In addition, the pedestal 320 may be provided in a '+' shape to increase the bending resistance when penetrating into the sea floor 10.

The electromagnet fixing part 400 is installed on the lower outside of the suction paddle body 200 in an on / off manner.

The plurality of electromagnet fixing parts 400 are installed at a predetermined interval in the circumferential direction on the lower outer side of the suction file body 200.

6 to 7, a suction file installation method with an external support according to the present invention includes a suction file 100 having an external support 300 on the outside of a suction file body 200, A step S100 of lowering the suction pile 100 to the surface 10 and a step of moving the suction pile 100 down to the sea floor 10 so that the outer support 300 loaded with the suction pile body 200 contacts the sea floor 10 first A step S200 in which the pedestal 320 of the external support 300 is partially penetrated to the sea floor 10 by its own weight and a step S200 of applying a part of the pedestal 320 to the self- (S300) in which the suction file body (200) is brought into contact with the sea floor (10) and the suction file body (200) is introduced into the submarine lipid by suction pressure A step S400 of bringing the guide member 310 of the outer support 300 into close contact with the upper plate 220 of the body 200 and a step S400 of attaching the suction file body 2 The outer support 300 is introduced together with the suction file body 200 by the tube input of the suction file body 200 at the time when the upper plate 220 of the outer support 300 meets the guide member 310 of the outer support 300, (S500) in which the suction file 100 is installed.

The step S200 in which the external support 300 first touches the sea floor 10 and the pedestal 320 is partially penetrated into the sea floor 10 by its own weight may be performed at the lower part of the suction file body 200 the electromagnet fixing part 400 is installed at the initial stage to integrate the suction file body 200 and the external support 300 with the electromagnet fixing part 400. [

The step S300 of the suction file body 200 first reaching the sea floor 10 by its own weight and intruding into the seabed by the suction pressure is performed after the suction file body 200 is partially intruded, The fixing unit 400 is turned off and the suction file body 200 is slid downward to be absorbed into the submarine lipid.

That is, when the suction file body 200 is slid downward along the guide member 310 due to its own weight and partially penetrated into the seabed, the suction file body 200, which is integrated by the electromagnet fixing portion 400, The current of the electromagnet fixing part 400 is disconnected as the support table 300 is detached and the suction file body 200 is continuously slid down along the guide member 310 and penetrated into the seabed.

A step S400 in which the upper plate 220 of the suction file body 200 and the guide member 310 of the outer support 300 are closely contacted while the suction file body 200 is intruded, The guide member 310 is caught by the engagement protrusion 221 provided on the outer support 300 so that the suction file body 200 is not detached from the outer support 300. When the suction file body 200 is introduced into the subsoil, Is also intruded with the suction file body (200).

That is, when the suction file body 200 slides downward in the guide member 310 and is introduced into the sea floor, the upper plate 220 is closely attached to the upper portion of the guide member 310, The guide member 310 is caught by the upper plate 220 so that the suction file body 200 is not released from the guide member 310 and the external support 300 is also penetrated by the tube input of the suction file body 200 Respectively.

As described above, the operation state of the suction puff having the outer support according to the present invention and its installation method will be described below.

The pile-shaped outer support 300 is disposed outside the suction pile 200 so that the outer pile 300 is pushed together with the suction pile 200 by the pipe of the suction pile 200 So that the eccentricity of the suction pawl 100 due to the pulling load can be prevented.

An outer support 300 is disposed on the outer side of the suction file body 200 and a guide member 310 is provided to surround the suction file body 200 and a plurality of Since the pedestal 320 is provided, the suction file body 200 can be slid downward in the guide member 310 while holding the eccentricity of the suction file body 200 by the pedestal 320, The pull-out support force can be increased.

In addition, since the pedestal 320 supporting the suction paddle body 200 is made smaller than the length of the suction paddle body 200 and the padding 320 has the same thickness as that of the wall body 210, the penetration resistance can be minimized .

In addition, since the cross-section of the pedestal 320 is formed in a 'T' shape or a '+' shape, the bending resistance can be improved when the external support 300 is inserted together with the suction file body 200.

Since the electromagnet fixing part 400 of the on / off type is installed outside the lower portion of the suction pawl body 200, the outer support pawl 300 can be easily partially penetrated by its own weight .

Since the external support 300 having the plurality of pedestals 320 is installed on the outside of the suction file body 200 as described above, when the suction pile 100 penetrates the sea floor 10, Eccentricity is not generated in the suction file body 200 and the outer support 300 is first partially penetrated by the self weight while touching the sea floor 10 and then the suction file body 200 is guided by the guide member 310 So that it can be easily installed without adding the internal structure of the suction paddle 100. As shown in FIG.

As described above, the present invention is not limited to the above-described specific preferred embodiments, and any person skilled in the art can make various modifications without departing from the gist of the present invention. It is to be understood that such changes and modifications are intended to fall within the scope of the appended claims.

10: Sea bottom surface
100: Suction file
200: Suction file body
210: wall
220: top plate
221: hanging jaw
300: External support
310: Guide member
320: Base
400: electromagnet fixing section

Claims (12)

A suction pouch body having a hollow cylindrical shape with an upper end closed by an upper plate, a lower end opened, and a side surrounded by a wall of a cylindrical surface;
An external support installed outside the suction file body to allow the suction file body to be slidable; And
An electromagnet fixing unit installed outside the lower portion of the suction pouch body;
And an outer support including an outer support. The method according to claim 1,
Wherein a suction jig is provided around the outer periphery of the upper plate so as to protrude from the outer periphery of the wall so that the suction pouch body is not detached from the outer support. The method according to claim 1,
The outer support includes a guide member for supporting and guiding the suction pouch body while enclosing the outside of the suction pouch body, and a pedestal for supporting the suction pouch body while being penetrated through the underside of the outer side lower portion of the guide member Wherein the suction member is provided with an outer support. The method of claim 3,
Wherein a plurality of the support members are installed at predetermined intervals so as to stably support the suction file body without eccentricity. The method according to claim 3 or 4,
Wherein the length of the pedestal is less than the length of the suction pouch body to minimize penetration resistance of the suction pouch body. The method according to claim 3 or 4,
Wherein the thickness of the pedestal is the same as the wall thickness of the suction pouch body. 4. The method according to claim 3 or 4, wherein
Characterized in that the pedestal is provided in a 'T' or '+' shape to increase the bending resistance at the time of penetration. The method according to claim 1,
Wherein a plurality of electromagnet fixing portions are provided on the outer side of the lower portion of the suction pouch body at a predetermined interval in the circumferential direction. The suction file having an external support on the outside of the suction file body is lowered to the sea floor;
The outer support frame loaded with the suction file body touches the seabed surface first, and the pedestal is partially penetrated into the seabed surface by its own weight;
A part of the pedestal is partially penetrated into the seabed surface, the suction file body is brought into contact with the sea floor by its own weight, and the suction file body is introduced into the submarine lipid by suction pressure;
The upper plate of the suction pouch body and the guide member of the outer support are closely contacted while the suction pouch body is penetrated; And
A step of inserting an outer support along with a suction file body by inputting a tube of the suction file body at a point of time when the upper plate of the suction file body meets the guide member of the outer support and completing the installation of the suction file;
And an outer support including an outer support. 10. The method of claim 9,
Wherein the electromagnet fixing unit is installed at a lower portion of the suction pawl body so that the suction pawl body and the external supporting pawl are integrated by the electromagnet fixing unit at the initial stage when the external support pawl touches the seabed surface and is partially penetrated by the self weight. Wherein the suction support is provided with an external support. 10. The method of claim 9,
In the step where the suction file body is brought into contact with the sea floor due to its own weight and is intruded into the seabed by the suction pressure, after the suction file body is partially penetrated, the electromagnet fixing part is turned off, Wherein the suction port is slid into the bottom surface of the suction port. 10. The method of claim 9,
The guide member is hooked by the hooking jaw provided on the outer periphery of the upper plate so that the suction file body is dislodged from the outer support member in the step of contacting the upper plate of the suction file body and the guide member of the outer support while the suction file body is intruded, Wherein the outer support is intruded into the seafloor along with the suction file body.

Images