KR20200055994A - guide anchor for constructing file and construction method - Google Patents

Abstract

The present invention relates to a guide anchor for constructing a pile and a construction method thereof. The guide anchor comprises: a body unit which forms the exterior of the guide anchor; a pile insertion hole formed on the central part of the body unit to vertically penetrate the same; and a plurality of penetrating holes radially arranged. The construction method comprises: a step (a) of lowering the guide anchor down to the sea bottom ground; a step (b) of allowing the guide anchor to be inserted into a proper depth by the weight thereof; a step (c) of driving and interpenetrating a steel pipe or a pile into the pile insertion hole of the guide anchor; and a step (d) of plugging the steel pipe or the pile on the guide anchor to move as one body, wherein the steps (a) to (d) are conducted in a consecutive sequence. Accordingly, the guide anchor for constructing a pile is formed in a shape having a skirt and thus, improves supporting force in a vertical direction and in a horizontal direction of the pile to enhance stability and reduce the used amount of a steel pile, thereby reducing the construction cost.

Description

Guide anchor for constructing files and its construction method {guide anchor for constructing file and construction method}

The present invention relates to a guide anchor for constructing a foundation of a pile (pile structure) which is essentially used when a fixed structure is installed on the coast, sea, and ocean, and when installing the pile, a guide anchor for pile construction that secures the supporting force of the pile And its construction method.

In general, in order to install the underwater structure, the work of driving the pile is performed at the place where the underwater structure will be installed by using a barge and a rigging device for installing the foundation file, and after the file is penetrated deep into the seabed, the upper part of the target structure is placed in the pile. By combining the structures, the structures are stably fixed in the marine space.

As a prior art, according to Republic of Korea Registration No. 10-1403140, 'Marine File Basic Construction Method', the construction method is (a) a ballast formed by filling water in a tank divided into compartments inside, in the central part The vertically hollow is formed, and the drag anchor anchors the file in the hollow of the pants composed of three or more active winches to which the mooring lines formed at the ends are connected, and then lifts and moves the pants by floating in the water; (b) After releasing the mooring line of the active winch on the upper part of the pants and lowering the drag anchor to the underwater floor, the active winch interlocks to adjust the tension of the mooring line to maintain the balance of the pants and fix the pants while fixing the file. Descending to the underwater bottom through the hollow of the pants and supporting it; (c) lifting the pants along the lowered pile with a lifter, and then fixing the piles to the raised pants; (d) drilling the underwater bottom in contact with the end of the pile with a perforation device at the lower end of the fixed pile and intruding the pile with the weight of the pants; (h) after the installation of the file is finished, towing the pants and removing it from the file;

However, the above method can be used only for large-scale construction, and there is a problem that does not help in improving the function of the structure.

In addition, the basic structure used in the past has a problem in that it is difficult to stably support the marine structure in the soft ground, and the construction and operation of the basic structure is excessively expensive and time-consuming.

1) Republic of Korea Registration No. 10-1403140

The present invention has been devised to solve this problem, and by installing a guide anchor for pile construction to secure the pile's bearing capacity on the seabed, it enables rapid and precise construction and improves the supporting force in the vertical and horizontal directions of the pile (pile structure). In addition, it is intended to provide a guide anchor for a file construction and a construction method thereof, which reduces construction cost since it significantly reduces the use of expensive steel piles.

The present invention relates to a guide anchor for a pile construction and a method for constructing the same, wherein the guide anchor includes a body portion constituting the appearance of the guide anchor and a pile insertion hole formed to penetrate vertically in the center of the body portion. .

In addition, the body portion is characterized in that it further comprises a plurality of through-holes arranged radially.

In addition, the vertical cross-section of the through-hole is characterized in that it is formed in a tapered shape with a larger cross-sectional area toward the bottom.

In addition, the upper portion of the body is characterized in that it is formed in a conical shape.

In addition, the body portion is characterized in that it comprises a hollow tube-shaped portion with a space formed therein from the bottom.

In addition, the pile insertion port is characterized in that a support portion extending upward is formed.

In addition, the vertical cross-section of the pile insert is characterized in that it is formed in a tapered shape with a smaller cross-sectional area toward the bottom.

In addition, the body portion is characterized in that it is made of concrete.

In addition, the method of constructing a guide anchor for pile construction includes: (a) descending a guide anchor to the seabed, (b) injecting the guide anchor to an appropriate depth with its own weight, and (c) to the file insertion hole of the guide anchor. It characterized in that it comprises the step of stepping through the pile, (d) the file is plugged in the guide anchor and is integrally operated.

In addition, in step (b), the guide anchor is settled deeper to a certain depth while the soil of the soft ground is discharged through the through hole of the guide anchor.

In addition, between steps (c) and (d), the stopper is coupled to the outer periphery of the file, and is characterized in that it is fixed between the inner periphery of the file insertion hole of the guide anchor and the outer periphery of the file.

In addition, the stopper and the pile insert is formed in a tapered shape with a narrow cross-sectional area toward the bottom, and as the stopper gradually descends downward by gravity, the coupling with the guide anchor becomes more robust. do.

Therefore, the present invention is formed in a shape having a skirt, and not only improves stability by improving the supporting force in the vertical and horizontal directions of the pile, but also has a remarkable effect of reducing the construction cost by reducing the amount of steel pile used.

In addition, by minimizing the horizontal cross-sectional area of the lower portion of the guide anchor that first comes into contact with the subsea ground, the penetration resistance of the guide anchor to the subsea ground is reduced by minimizing the penetration resistance to a certain depth.

In addition, since it is made of relatively inexpensive concrete, the cost is reduced, and it is possible to stably support the load, as well as to enable rapid construction, thereby significantly reducing the construction cost during offshore construction where the charter and equipment rental fee is relatively high.

In addition, through the through-hole formed in the guide anchor, structures such as soft ground and non-flat ground are installed, and the uncertainty of the ground that adversely affects is removed, so it can be applied to the soft ground regardless of the installation location. There is a remarkable effect of easily securing.

1 is a perspective view of a guide anchor according to a first embodiment of the present invention.
Figure 2 is a cross-sectional perspective view of the guide anchor according to the first embodiment of the present invention.
Figure 3 is a cross-sectional view of the guide anchor according to the first embodiment of the present invention.
Figure 4 is a front view of the guide anchor according to the first embodiment of the present invention.
5 is a rear view of the guide anchor according to the first embodiment of the present invention.
6 is a perspective view of a guide anchor according to a second embodiment of the present invention.
7 is a sectional perspective view of a guide anchor according to a second embodiment of the present invention.
8 is a cross-sectional view of a guide anchor according to a second embodiment of the present invention.
9 is a front view of the guide anchor according to the second embodiment of the present invention.
10 is a rear view of the guide anchor according to the second embodiment of the present invention.
11 to 13 is an installation and use diagram of the guide anchor of the present invention.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains. It is provided to completely inform the person having the scope of the invention, and the present invention is only defined by the scope of the claims.

In addition, the terminology used herein is for describing the embodiments and is not intended to limit the present invention.

In the present specification, the singular form also includes the plural form unless otherwise specified in the phrase. As used herein, "comprises" and / or "comprising" does not exclude the presence or addition of other components than those mentioned.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used as meanings commonly understood by those skilled in the art to which the present invention pertains.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

1 is a perspective view of a guide anchor according to a first embodiment of the present invention, FIG. 2 is a cross-sectional perspective view of a guide anchor according to a first embodiment of the present invention, and FIG. 3 is a guide anchor according to a first embodiment of the present invention. Cross-sectional view, Figure 4 is a front view of the guide anchor according to the first embodiment of the present invention, Figure 5 is a rear view of the guide anchor according to the first embodiment of the present invention, Figure 6 is according to the second embodiment of the present invention 7 is a sectional perspective view of the guide anchor according to the second embodiment of the present invention, FIG. 8 is a sectional view of the guide anchor according to the second embodiment of the present invention, and FIG. 9 is a second embodiment of the present invention Front view of the guide anchor according to, Figure 10 is a rear view of the guide anchor according to the second embodiment of the present invention, Figures 11 to 13 are installation and use of the guide anchor of the present invention.

The guide anchor 100 of the present invention is installed on the submarine ground before the pile (pile structure 20) installed on the submarine ground is installed, and is upright to the hollow of the guide anchor 100 (file insertion port 120). It serves to secure the holding force of the fixed pile (20).

Hereinafter, the guide anchor 100 of the present invention will be described with reference to FIGS. 1 to 5 showing the first embodiment of the present invention.

The guide anchor 100 of the present invention includes a body portion 110 forming an exterior, a pile insertion port 120 formed to penetrate vertically in the center of the body portion 110, and up and down on the edge of the body portion 110. It is composed of a plurality of through-holes 130 which are penetrated into and radially arranged.

The body portion 110 is penetrated and fixed to the seabed, and the overall shape of the body portion 110 is cylindrical, and is formed in a horizontal cross-sectional circle.

In addition, the upper portion of the body portion 110 is formed in a conical shape, the inside is filled, the central portion is formed through the upper and lower pile insertion port 120 is formed, the edge through the vertical through-hole 130 A large number of radially arranged dogs are formed.

In addition, the lower portion of the body portion 110 is opened, and a hollow pipe-shaped portion 150 is formed inside the lower side.

The lower surface of the body portion 110 is configured to have a relatively small horizontal cross-sectional area, so that when the guide anchor 100 is penetrated into the seabed, it receives less intrusion resistance and is more easily penetrated into the seabed.

In more detail, in the process in which the guide anchor 100 is penetrated into the seabed, intrusion resistance is generated, and the penetration resistance is proportional to the strength of the ground and the horizontal cross-sectional area of the guide anchor 100.

In the present invention, by minimizing the horizontal cross-sectional area of the lower portion of the guide anchor 100 that is first contacted and penetrated into the seabed, the guide anchor 100 is easily penetrated.

Here, the lower horizontal cross-sectional area of the guide anchor refers to the cut area when the lower portion of the guide anchor is cut in the horizontal direction (horizontal).

In addition, the lower portion of the guide anchor 100 may serve as a wedge so that the guide anchor 100 can be securely fixed to the seabed after intrusion into the seabed is completed.

On the other hand, the through-hole 130 serves to reduce the penetration resistance when the guide anchor 100 is penetrated into the seabed, and to be installed while maintaining the guide anchor 100 horizontal.

In more detail, the lower portion of the body portion 110 is formed of an empty structure by the hollow pipe shape portion 150, and since the plurality of through holes 130 are formed on the upper portion, the guide anchor ( 100) in the process of being penetrated into the seabed, the soft soil is discharged to the upper portion of the guide anchor 100 through the through hole 130 of the guide anchor 100 inside the hollow pipe shape 150.

Due to this, even when the guide anchor 100 is installed on the non-flat ground, the internal soil is discharged through the through hole 130, so that the guide anchor 100 penetrates while maintaining the verticality on the subsea ground. It becomes easier to become.

In addition, even when the strength of the ground is large, the penetration resistance of the submarine ground is discharged to the outside through the through-hole 130, thereby reducing the penetration resistance. The through-hole 130 allows the guide anchor to receive less penetration resistance. In order to make the intrusion process of subsea ground more efficient.

In addition, as the guide anchor 100 improves the supporting area in the horizontal direction, the horizontal resistance of the pile is also secured.

In particular, a safety accident (hereinafter referred to as a 'punch-through') in which the structure loses stability and suddenly descends as the strength of the submarine ground rapidly decreases during intrusion of the subsea ground, the present invention is a skirt-shaped guide Since the anchor 100 and / or through the through hole 130 formed in the guide anchor 100 penetrates to the hard ground, it is stably fixed to prevent a punch-through phenomenon.

On the other hand, when the penetration into the seabed is completed, the guide anchor 100 is fixed to the seabed to support the pile and offshore structures installed on the pile, in which case sufficient support force (intrusion resistance) must be secured.

After the guide anchor is penetrated more than a certain depth, not only does the strength of the ground increase, but also the pressure of the soil covering the upper portion of the guide anchor 100 increases, so the through hole 130 of the guide anchor 100 increases. The soil is in a charged state, and the guide anchor 100 is fixedly installed on the seabed by pressures up and down to secure support force (intrusion resistance).

In the present invention, as the first embodiment, the through-hole 130 is formed in a circular shape, but is formed in a shape in which the cross-sectional area becomes wider as the vertical cross section goes downward.

When the penetration into the submarine ground is terminated as the through-hole 130 is formed to have a larger cross-sectional area toward the downward direction, it has an effect of having a greater supporting force (intrusion resistance).

In addition, the through-hole 130 may be formed in various shapes, and in the present invention, a guide anchor 100 having a square through-hole 130 as a second embodiment is illustrated in FIGS. 6 to 10.

In addition, the guide anchor 100 used in the present invention is made of concrete, and is penetrated by its own load during penetration, and has an advantage of relatively low manufacturing cost.

Meanwhile, the file insertion hole 120 is a hole in which the file 20 is inserted and installed after the guide anchor 100 is penetrated into the seabed.

11 to 13, after the guide anchor 100 is installed on the ground, a file 20 is inserted into the file insertion port 120, and a stopper 200 is provided to fix the file. It is installed through the file.

In more detail, a stopper 200 is inserted between the outer circumferential surface of the pile and the inner circumferential surface of the pile insertion port 120 of the guide anchor 100 to further strengthen the coupling between the pile and the guide anchor 100.

The stopper 200 is coupled to the outer circumferential surface of the pile 20, and is formed in a shape in which the cross-sectional area becomes narrower toward the bottom, and accordingly, the vertical cross-section of the pile insert 120 also becomes a tapered shape in which the cross-sectional area narrows toward the bottom. Is formed into.

The stopper 200 and the file insertion port 120 are formed in a tapered shape with a narrow cross-sectional area toward the bottom, and as the stopper 200 gradually descends downward by gravity, the pile and guide anchor 100 ) And become more and more solid.

On the other hand, the pile insertion port 120 is formed with a support portion 140 extending upward.

Since the support portion 140 is a cylindrical hollow body, the support portion 140 is formed to extend vertically upward from the pile insertion port 120, so that the vertical cross section of the support portion 140 is also configured to be narrower toward the bottom. It would be desirable.

The support part 140 supports the outer circumferential surface of the pile 20 inserted into the pile inserting opening 120 more firmly, thereby improving the supporting force in the vertical direction of the pile.

In addition, the guide anchor 100 has an effect of reinforcing the seabed surface, in addition to the role of improving the bearing capacity of the pile 20, when a plurality of guide anchors are installed to be used to improve the ground of the seabed, the The shape of the guide anchor 100 may be manufactured and used in various shapes suitable for construction such as square or hexagon.

Hereinafter, with reference to FIGS. 11 to 13, a process of installing a file using the guide anchor 100 according to the present invention will be described.

First, the guide anchor 100 is lowered to the seabed.

Thereafter, the guide anchor 100 is penetrated to an appropriate depth with its own weight, and an additional load may be applied so that the guide anchor 100 sinks deeper into the soft ground.

At this time, as the soil of the soft ground is discharged through the through hole 130 of the guide anchor 100, the guide anchor is settled deeper to a certain depth.

When the guide anchor 100 is sufficiently penetrated into the seabed, a file is penetrated into the file insertion port 120 of the guide anchor 100.

The pile 20 is installed to penetrate the guide anchor 100 vertically, and is settled by a ride or the like.

Thereafter, a stopper 200 is inserted into the outer circumference of the guide anchor 100, and the stopper 200 is fixed between the inner circumferential surface of the file insertion port 120 and the outer circumferential surface of the file.

At this time, the stopper 200 and the file insertion port 120 is formed in a tapered shape with a narrow cross-sectional area toward the lower portion, as the stopper 200 gradually descends downward by gravity, the pile 20 and The coupling with the guide anchor 100 is to become more and more robust.

That is, the stopper 200 makes the center center of the guide anchor 100 and the center center of the pile 20 concentric, thereby further consolidating, and the pile 20 is attached to the guide anchor 100. It is plugged so that it is integrated.

As described above, the present invention has been described with reference to the embodiment shown in the drawings, but this is only for explaining the invention, and those skilled in the art to which the present invention pertains various modifications or equivalents from the detailed description of the invention It will be understood that one embodiment is possible.

Therefore, the true scope of the present invention should be determined by the technical spirit of the claims.

10: Submarine ground
20: File
100: Guide anchor
110: body part
120: file insertion
130: through hole
140: support
150: hollow tube shape
200: Stopper

Claims (12)

In the guide anchor installed on the seabed,
A body part constituting the appearance of the guide anchor;
A guide anchor for pile construction, comprising; a pile insertion hole formed to penetrate vertically in the center of the body portion.
According to claim 1,
A guide anchor for pile construction, characterized in that the body portion further comprises a plurality of through holes arranged radially.
According to claim 2,
The vertical cross-section of the through hole is a guide anchor for pile construction, characterized in that formed in a tapered shape with a larger cross-sectional area toward the bottom.
According to claim 1,
A guide anchor for pile construction, characterized in that the upper portion of the body portion is formed in a conical shape.
According to claim 1,
The body portion is a guide anchor for pile construction, characterized in that it comprises a hollow tube-shaped portion formed with a space therein from the bottom.
According to claim 1,
A guide anchor for pile construction, characterized in that a support portion extending upward is formed at the pile insertion hole.
According to claim 1,
The vertical cross-section of the pile inlet is a guide anchor for constructing a pile, characterized in that formed in a tapered shape with a smaller cross-sectional area.
According to claim 1,
The body portion is a guide anchor for pile construction, characterized in that made of concrete.
(A) lowering the guide anchor to the seabed ground;
(B) the guide anchor is penetrated to the appropriate depth with its own weight;
(c) a step in which a file is driven through a file insertion hole of the guide anchor;
(d) The file is plugged in a guide anchor and the step of being integrally operated; a method of constructing a guide anchor for a file construction comprising a.
The method of claim 9,
In the step (b), the guide anchor construction method for file construction, characterized in that the guide anchor is settled deeper to a certain depth while the soil of the soft ground is discharged through the through hole of the guide anchor.
The method of claim 9,
Between the steps (c) and (d), the stopper is coupled to the outer periphery of the file, the guide for file construction, characterized in that fixed between the inner periphery of the file insertion hole of the guide anchor and the outer periphery of the file. Anchor construction method.
The method of claim 11,
The stopper and pile inlet is a guide anchor construction method for pile construction that is formed in a tapered shape with a narrow cross-sectional area toward the bottom.

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