KR100977979B1 - Reinforcement device for marine pile using bucket foundation - Google Patents

Abstract

The present invention discloses an offshore pile reinforcement device utilizing a bucket foundation to reinforce the bearing capacity in the transverse direction. The present invention relates to a marine pile reinforcement apparatus using a bucket foundation, the ground in which the PPC pile or steel pipe pile is inserted to increase the bearing capacity in the transverse direction of the PHC pile or steel pipe piles An insertion hole penetrated in the center and inserted into the PPC pile or the steel pipe pile at a center thereof, and an inner supporting surface having a predetermined height in contact with an outer surface of the PPC pile or the steel pipe pile inserted into the insertion hole; It is composed of a reinforcement device consisting of an outer support surface disposed on the concentric circles spaced apart from the inner support ground by a predetermined interval, and an upper surface connecting the inner support surface and the outer support ground, thereby supporting the force of the marine pile in the transverse direction Reinforcement, using the suction pressure, the reinforcement device is easy on the upper main surface of the soil ground where the marine pile is installed. It can be installed.

Offshore Pile, PA, Steel Pipe

Description

Marine pile reinforcement using bucket foundation {REINFORCEMENT DEVICE FOR MARINE PILE USING BUCKET FOUNDATION}

The present invention relates to an offshore pile reinforcement apparatus using a bucket foundation, and more particularly, to reinforce a supporting force of an offshore pile in a transverse direction by additionally installing a separate reinforcement unit on the upper main surface of the earth ground in which the offshore pile is installed. And, using the suction pressure relates to a marine pile reinforcement apparatus using a bucket foundation that can be easily installed in the upper main surface portion of the soil ground in which the marine pile is installed.

In general, when constructing a structure, it is essential to lay the foundation to prevent unequal settlement of the structure and settlement beyond the allowable value.

The foundation works that are constructed for this purpose are classified into deep foundations and low depth foundations. These foundation constructions are constructed by the penetration method that injects P.C. pile or steel pipe pile into the ground. Although known as a non-stop punching method is widely used.

The bearing capacity of the pile, which means the ability of the pile penetrated to the ground by the direct drilling method, is to support the load of the upper part, it is composed of the peripheral friction force and the tip bearing force. Peripheral frictional force of the pile means the frictional force developed by the contact of the side and the ground of the pile, the end support force of the pile means the bearing force expressed at the end of the pile.

The tip support force of the pile is different depending on the end shape of the pile, the expression mechanism is different, the size of the tip support force is the cross-sectional area of the pile end, the support force per unit area of the pile end, the volume of the ground flowing into the pile, the ground and pile inside It is determined by the friction coefficient between the ground and the like.

1 is a perspective view showing the structure of a conventional marine pile.

As shown in the figure, a conventional marine stake (PHC) or a marine pile 10, such as a steel pipe pile, is formed in a tubular shape having a predetermined length and diameter and a hollow 11 formed in the center thereof. One end portion has a structure having a funnel shape 12 whose diameters are sequentially narrowed so as to be easily penetrated into the ground by a direct drilling method.

By such a configuration, a conventional marine pile is used for foundation work when constructing a structure in the ocean, one end of which is installed so as to penetrate the upper surface of the rock located below the soil ground through the ocean soil ground. The outer circumferential surface is supported by the soil ground to support the structure constructed on its upper surface.

However, in the conventional marine piles, since the structure constructed on the top surface is loaded in the vertical direction by gravity, the support force in the vertical direction can ensure stability, but the structure is perpendicular to the vertical direction in which the load is applied. The bearing capacity in the transverse direction is highly dependent on the diameter of the marine pile, and there is a problem in that stability in the transverse direction such as tidal current or waves cannot be secured because the diameter of the marine pile cannot be increased indefinitely.

The object of the present invention devised in view of the above point is to reinforce the bearing capacity of the marine pile in the transverse direction by additionally installing a separate reinforcing device on the upper main surface of the earth ground in which the marine pile is installed, and using the suction pressure. It is to provide a marine pile reinforcement apparatus using a bucket foundation that can be easily installed in the upper main surface portion of the soil ground in which the marine pile is installed.

Marine pile reinforcement apparatus using a bucket foundation for achieving the object of the present invention as described above, to increase the bearing capacity in the transverse direction of the PPC pile (PHC) pile or steel pipe piles penetrated into the ground Alternatively, the steel pipe pile is inserted into the ground into which the pipe is inserted, and the insertion hole is formed through the center so as to be inserted into the PE pile or the steel pipe pile, and the P hole pile or the steel pipe pile inserted into the insertion hole is in contact with a predetermined height. And an inner support surface having an inner support surface, an outer support surface disposed on concentric circles spaced apart from the inner support surface by a predetermined distance, and a reinforcement device including an upper surface connecting the inner support surface and the outer support ground. .

As described above, the marine pile reinforcement apparatus using the bucket foundation according to the present invention reinforces the bearing capacity of the marine pile in the transverse direction by additionally installing a separate reinforcement unit on the upper main surface of the earth ground in which the marine pile is installed. Using the suction pressure, the reinforcement device can be easily installed on the upper main surface portion of the soil ground in which the marine pile is installed.

Marine pile reinforcement apparatus using a bucket foundation according to an embodiment of the present invention, the PPC pile or steel pipe pile to increase the bearing capacity in the transverse direction of the PPC pile or steel pipe piles penetrated into the ground An inner support having a predetermined height and being inserted into the ground so as to be in contact with the outer surface of the PH pile or the steel pipe pile inserted into the PPC pile or the steel pipe pile at the center thereof; And a reinforcing device comprising a surface, an outer supporting surface disposed on concentric circles spaced apart from the inner supporting surface by a predetermined distance, and an upper surface connecting the inner supporting surface and the outer supporting surface.

The inner supporter and the outer supporter of the reinforcement apparatus are disposed on the concentric circles in order to provide the support force evenly along the main surface of the marine pile since the marine pile has a circular cross section.

In addition, the lower side of the reinforcing device is formed with an opening, it is effective that a predetermined internal space is provided between the inner surface and the outer surface.

This is to easily install the reinforcement device on the soil ground by using the suction pressure when the reinforcement device is installed on the soil ground.

Hereinafter, a marine pile reinforcement apparatus using a bucket foundation according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a perspective view showing the structure of the marine pile reinforcement apparatus using a bucket foundation according to an embodiment of the present invention, Figure 3 is a cross-sectional view taken along the line 'III-III' of Figure 2, Figure 4 is 5 is a cross-sectional view taken along line 'IV-IV', and FIG. 5 is a cross-sectional view illustrating a structure of an offshore pile reinforcement apparatus using a bucket foundation according to another embodiment of the present invention, and FIG. This is a longitudinal cross-sectional view showing the structure of the marine pile reinforcement using the foundation installed on the soil ground.

As shown in these drawings, the marine pile reinforcement device 200 using the bucket foundation according to an embodiment of the present invention is a support force for the transverse direction of the PPC pile or steel pipe piles intruding into the ground In order to increase the PH pile or steel pipe pile 100 is inserted into the ground, the insertion hole 210 and the insertion hole 210 is formed so as to be inserted into the HP pile or steel pipe pile 100 in the center thereof The inner support surface 220 which is in contact with the outer surface of the PSI pile or the steel pipe pile 100 inserted into the outer surface and has a predetermined height, and the outer support disposed on the concentric circles spaced apart from the inner support ground 220 by a predetermined distance. It characterized by consisting of a reinforcement device consisting of a surface 230, the upper surface connecting the inner support surface 220 and the outer support ground 230.

When the reinforcement device 200 is installed, the diameter of the insertion hole 210 is formed to have the same diameter as that of the HS pile or the steel pipe pile so that the insertion hole 210 may be tightly fitted to the outer surface of the PI pile or the steel pipe pile. The bottom surface of the marine pile reinforcement device 200 utilizing the bucket foundation is formed with a predetermined inner space between the inner support ground 220 and the outer support ground 230.

As shown in FIG. 3, the inner support ground 220 and the outer support ground 230 have different diameters, and the cross section formed by the inner support ground 220 is formed in a ring shape having a relatively small diameter. The cross section formed by the outer support ground 230 is formed in a ring shape having a relatively large diameter and has a donut shape as a whole.

The internal space is to easily install the marine pile reinforcement device 200 using the bucket foundation in the soil ground, when the marine pile reinforcement device 200 using the bucket foundation on the soil ground is present in the interior space The air is sucked to the outside of the marine pile reinforcement apparatus 200 utilizing the bucket foundation, and the marine pile reinforcement apparatus 200 utilizing the bucket foundation is formed by the pressure difference between the inside and the outside of the marine pile reinforcement apparatus using the bucket foundation. It penetrates into the soil ground.

The outer diameter of the marine pile reinforcement device 200 using the bucket foundation depends on the diameter of the marine pile installed or the load of the structure installed on the upper surface, or the strength of the tidal wave or wave at the installed place. It can be formed to have a diameter up to 10 m.

By such a configuration, after the marine pile reinforcement device 200 formed integrally with the marine pile 100 and the inner support ground 220 is installed on the bottom surface, the marine pile 100 penetrates to the rock by a non-stop method. And, the marine pile reinforcement device 200 can increase the bearing capacity of the marine pile 100 in the transverse direction by installing on the soil ground using the suction pressure.

In addition, after the marine pile 100 is penetrated to the rock by the non-stop method to the bottom surface of the ocean, the reinforcing device 200 is inserted into the outer circumferential surface of the marine pile 100 and the earth and sand using the non-stop method or suction pressure By installing on the ground, it is possible to increase the bearing capacity of the upper portion of the marine pile 100 in the transverse direction.

On the contrary, the marine pile reinforcement apparatus 200 utilizing the bucket foundation is first installed on the soil ground by using suction pressure, and the marine pile 100 is inserted through the insertion hole 210 in the center to the rock by the non-stop method. This can increase the bearing capacity of the top of the marine pile in the transverse direction.

On the other hand, as shown in Figure 5, in the marine pile reinforcement device using the bucket foundation according to another embodiment of the present invention, the inner support surface 220 of the marine pile reinforcement device 200 is upward along the height direction It is formed to be inclined so as to increase in diameter gradually, the end surface of the insertion hole 210 has a structure formed in a tapered shape.

When the inner support ground 220 is formed to be inclined to increase in diameter toward the upper side along the height direction, the diameter of the inlet of the inner support ground 220 is larger than the diameter of the marine pile 100.

Therefore, after injecting the marine pile reinforcement device 200 into the soil ground by using the suction pressure, and injecting the marine pile 100 into the center of the marine pile reinforcement device 200 by a non-stop method, finely centered There is no need to drive in line with the sea, and when the end of the marine pile 100 is inserted into the inlet, the marine pile 100 along the inclined inner support surface 220 is infiltrated into the soil ground, so that the marine pile ( 100) can be installed.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

1 is a perspective view showing the structure of a conventional marine pile,

Figure 2 is a perspective view showing the structure of the marine pile reinforcement device using a bucket foundation according to an embodiment of the present invention,

3 is a cross-sectional view taken along line III-III of FIG. 2;

4 is a cross-sectional view taken along the line 'IV-IV' of FIG. 2;

Figure 5 is a cross-sectional view showing the structure of the marine pile reinforcement device using a bucket foundation according to another embodiment of the present invention,

FIG. 6 is a longitudinal cross-sectional view illustrating a structure in which a marine pile reinforcement apparatus using a marine pile and a bucket foundation of FIG.

** Description of the symbols for the main parts of the drawings **

100: marine pile 200: reinforcement device

210: insertion hole 220: inner surface

230: outer surface

Claims (3)

delete In order to increase the bearing capacity in the transverse direction of the PHC piles or steel pipe piles penetrated into the ground, the PPC piles or steel pipe piles are inserted into the infiltrated ground, and inserted in the center of the PPC pile or steel pipe pile An insertion hole formed through the insertion hole, an inner support surface having a predetermined height in contact with an outer surface of the PH pile or the steel pipe pile inserted into the insertion hole, and an outer side disposed on a concentric circle spaced apart from the inner support surface by a predetermined distance; A reinforcement device comprising a support surface and an upper surface connecting the inner support surface and the outer support ground, The lower side of the reinforcement device is formed in the opening and the marine pile reinforcement apparatus using a bucket foundation, characterized in that a predetermined internal space is provided between the inner and outer surface is installed on the ground by suction pressure. The method of claim 2, The inner support surface of the marine pile reinforcement device using the bucket foundation is formed to be inclined to increase in diameter toward the upper side along the height direction, the longitudinal section of the insertion hole is utilized in the bucket foundation, characterized in that formed in a tapered shape One marine pile reinforcement.

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