KR101043605B1 - Multi-type support connector device of monopile for supporting seaside or seabed soft ground - Google Patents

Abstract

The present invention provides a multi-type support connector mechanism of a single support pile for soft ground, the multi-type support connector mechanism includes a main file guide attached to a predetermined height of the main support pile so that the main support pile is driven through the soft ground. A guide body consisting of a plurality of skirt pile guides which are fixed inclined to an outer surface of the pile guide and through which the auxiliary support pile is driven, and installed at an upper portion of the guide body to be fixedly coupled to the holes of the main pile guide and the skirt pile guide. And a support adapter for horizontally fixing and supporting the upper support structure.

Description

MULTI-TYPE SUPPORT CONNECTOR DEVICE OF MONOPILE FOR SUPPORTING SEASIDE OR SEABED SOFTED SOFT GROUND}

The present invention relates to, for example, a multi-support connector mechanism of a single support pile for soft ground for installation of an offshore structure. More particularly, the present invention relates to an onshore or offshore installation of a structure such as a wind power tower. The present invention relates to a multi-type support connector mechanism detachable to a pile for reinforcing bearing capacity of a single pile which is installed to reinforce the ground when the supporting ground is a soft ground such as a floor.

In general, in the case of installing various types of large-capacity structures such as wind power towers on land or offshore, a method of driving piles is used to fix the lower structure of the structure to the ground, and in particular, in the case of installation at sea, Considering various factors such as horizontal load and vertical load according to the shape, weight, and structural dynamics of offshore structures, the monofilament method is similar to the case of Europe, where the depth of the seabed is not deep and suitable for piling. The lower structure of monopile type) is installed and the marine 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 only by the simplicity of pile production and the single piling process, in accordance with the peculiarity of the single pile method. In the case of geological areas where the soft ground is developed, such as geological formations, it is necessary to carry out processes such as soil reinforcement or geological improvement in order to secure the required depth of navigation, or to increase the diameter of the pile or to carry out deeper depth. In order to do this, higher level manpower and equipment should be input.

For example, when installing a marine structure such as a platform on the sea, in consideration of various matters, a multi-leg pile type structure, such as a jacket, which is prepared in advance on the land, is manufactured at the land. There is a jacket method to install the upper structure to be transported to the installation, and piled through the piling sphere formed in the structure to the lower structure on the sea floor ground.

However, this jacket method has already proved the stability of the structure, but it takes a long time to manufacture, the structure is very complicated, and many welding sites require skilled technology and careful management of the process. Since it requires a structure that reaches the surface of the water, which is possible to install the structure, a large amount of materials and manpower must be input to manufacture the structure, and after the installation, various complicated preparation processes for installing the upper structure are required.

In addition, as in the case of a suction pile, an earth anchor is formed on the bottom of the deep sea surface, which is difficult to apply a direct pile method, to secure supporting force and to be connected to the lower part of the floating marine structure through a chain or wire. There is also a method of using the fixing method.

However, it is impossible to install an upper structure such as an offshore wind tower that requires vertical and horizontal loads simultaneously such as an offshore tower in the lower structure formed by the suction pile method. The fabrication of substructures is essential.

The present invention has been made to solve the conventional problems as described above, an object of the present invention is to reduce the depth of the driving of the single support pile that is installed on the soft ground when installing the offshore structure on the soft ground and at the same time the maximum file It is to provide a multi-support connector mechanism of a single support pile for soft ground that can secure a bearing force.

Another object of the present invention is to perform a conventional ground compaction method or geological improvement process to secure the bearing capacity of the pile, which is the original purpose of the filing, in a single pile that is installed at the time of installation of a large-scale structure on the soft ground on land or sea. Another object of the present invention is to provide a multi-support connector mechanism of a single support pile for soft ground, which can eliminate the support of the piling obtained through a conventional process.

Another object of the present invention is to be stabilized by increasing the horizontal load and the vertical load as well as reducing the depth of rudder and being not affected by the geological and ground conditions of the ground formed in the soft ground such as the fault when installing the marine structure on the sea floor or the coast. It is to provide a multi-support connector mechanism of a single support pile for soft ground to secure a bearing force to form a substructure.

Another object of the present invention is a soft that can be installed to exclude the interference of the pile pipe can be applied to the pile of the existing structure that needs to be reinforced as well as the new installation file in the pile installed at the time of installation of land or offshore structures To provide a multi-support connector mechanism of a single support pile for the ground.

Another object of the present invention is to provide a single support pile for soft ground having an adapter of flange type to replace the existing transition piece to ensure balance and stability of the structure installed on the driving pile and to facilitate installation. It is to provide a multi-type support connector mechanism.

In order to achieve the above object of the present invention, the present invention provides a multi-support connector mechanism of a single support pile for soft ground, the multi-support connector mechanism is the main support so that the main support pile is driven through the soft ground is accommodated through A guide body comprising a main pile guide attached to a predetermined height of the pile and a plurality of skirt pile guides which are inclinedly fixed to an outer surface of the pile guide and through which auxiliary support piles are driven, and holes of the main pile guide and skirt pile guide It is characterized in that it comprises a support adapter is installed on top of the guide body to be fixedly coupled to the support body for horizontally supporting the upper support structure.

In one embodiment, the support adapter is of an upper open type consisting of an upper portion having an inner circumferential fixing flange to which the upper supporting structure is fixedly installed, and a lower portion having fixing protrusions engaged with holes of the main pile guide and the skirt pile guide. A main body is provided, and in the lower portion, a hole communicating with a hole of the main pile guide and the skirt pile guide is formed.

In one embodiment, the main file guide and the skirt pile guide is cylindrical, characterized in that larger than the diameter of the main support pile and the auxiliary support pile driven through the main pile guide and the skirt pile guide.

In one embodiment, between the pile guide and the support pile driven through it is characterized in that the installation of a reinforcing rod (reach rod) to the pressure-sensitive adhesive for fixing each other or uneven wedge for swaged bonding using hydraulic pressure.

In one embodiment, the pile guide and the support pile driven therethrough are welded together.

In one embodiment, a curved sheet is fixed to an outer surface of the main pile guide, and the skirt pile guide is fixedly fixed to the curved sheet.

In one embodiment, the skirt pile guide is bonded to the outer surface of the main pile guide by at least one of welding and mechanical fasteners.

In one embodiment, the number of the skirt pile guide is characterized in that one or more.

In one embodiment, the inclination angle of the skirt pile guide is characterized in that the range of 0 ° to 45 °.

In one embodiment, the main pile guide is characterized in that it consists of a pair of halves divided longitudinally assembling each other.

According to the above-described configuration of the present invention, by using a single support connector mechanism that is integrated in carrying out piling in a region where soft ground is widely developed, a plurality of auxiliary support piles are supported at an appropriate angle through the skirt guide of the connector mechanism. It is possible to support the large superstructure of high load by using the support pile of small diameter compared to the prior art, which can be arranged to reinforce the bearing capacity and had to hit the single pile of the large diameter to reinforce the bearing capacity in the soft geology. have.

In addition, it can be installed at any height position of the main support pile, and the angle of the skirt pile guide can be adjusted, so that it has an installation flexibility that can ensure an optimal support capacity according to the shape and structure of the soft ground.

It can also replace processes such as lipid improvement to reinforce soft ground.

In addition, the driving depth of the file can be reduced during the filing operation.

In addition, it is possible to maximize the bearing capacity of the pile even at the same driving depth.

In addition, the structure of the support connector mechanism of the divided structure can be installed to increase the bearing capacity of the structure even in the pile in which the upper structure is already installed.

In addition, the skirt portion disposed at a predetermined inclination angle at the lower end portion installed in the water portion can exclude scouring at the contact surface between the pile portion and the sea bottom caused by the vortex of the water.

In addition, since the number of piles can be reduced, large equipment for filing large diameter steel pipe piles is not required.

In addition, by installing the support adapter, it is possible to secure the horizontal structure and stability of the upper structure without using the conventional expensive transition apparatus, and the installation is easy.

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

First, the multi-type support connector mechanism of the support pile for soft ground according to the present invention is a connector mechanism detachable to a support pile for supporting a large structure installed on the soft ground of land or water (especially at sea). It is to be understood that geologically improper grounds are not suitable for the support of the structure, and in particular can be characterized by the ocean floor or coastal faults, and large structures include, for example, wind generators.

1 is an exploded perspective view of the multi-type support connector mechanism of the support pile for soft ground according to the present invention, Figure 2 is a top and bottom perspective view of the support adapter of the multi-type support connector mechanism according to the present invention, Figure 3 is a multi-type of the present invention It is a top view which shows schematically the state which installed the support pile in the support connector mechanism.

Referring to these drawings, the illustrated multi-type support connector mechanism includes a guide main body 20 composed of a main pile guide 21 and a plurality of skirt pile guides 23a, 23b, 23c, 23d: 23 fixed to an outer surface thereof. It includes a support adapter 30 coupled to the upper guide body 20.

The main pile guide 21 is generally cylindrical, and is attached to a predetermined height of the main supporting pile 10 so that the cylindrical main supporting pile 10 installed in the soft ground (SB; It is fixed.

The skirt pile guide 23 is generally cylindrical and has a predetermined central axis a2 of the skirt pile guide 23 relative to the central axis a1 of the main pile guide 21 on the outer surface of the main pile guide 21. It is fixed to achieve the inclination angle θ, and the auxiliary support pile 13 (see FIG. 3) is driven therethrough.

In the drawing, four skirt pile guides 23 are installed, but the number is sufficient if one or more is sufficient, which is optimal considering various factors such as topographic map of soft ground, geology, and driving depth of main support pile. This is because the supporting capacity can be calculated and the design changed accordingly.

The skirt pile guide 23 may be integrally formed on the outer surface of the main pile guide 21 and formed through welding and / or mechanical fastening in a known manner, or as shown in the drawing, the main pile The curved sheet 25a and 25b formed on the outer surface of the guide 21 may be fixedly fixed.

The inclination angle θ of the skirt pile guide 23 is preferably in the range of 0 ° to 45 ° in consideration of the length of the auxiliary support pile driven through the skirt pile guide 23, the terrain of the soft ground, and the like.

This angle of inclination allows to form the necessary batter (vertical inclination) to be able to drive without being interrupted by the already supported main support pile 10 when the auxiliary support pile 13 is driven, and at the installation position of the guide body Therefore, even if the installation angle of the auxiliary support pile is 0 °, ie perpendicular to the main pile, it is not disturbed by the main pile at the time of driving.

The main pile guide 21 and the skirt pile guide 23 are larger than the diameters of the main support pile 10 and the auxiliary support pile 13 which are driven through each of them.

Reach rods 21r and 23r into which an adhesive such as grout is injected may be disposed between the pile guides 21 and 23 and the supporting piles 10 and 13 driven through the pile guides 21 and 23. .

In addition, after the uneven wedge (not shown) is disposed between the pile guides 21 and 23 and the supporting piles 10 and 13 driven therethrough, the external joint is joined by swaging using a hydraulic actuator from the outside. Or they can be joined together simply by welding.

Although the pile guide main body 20 of this structure is not shown in figure, the main pile guide 21 can be comprised by the pair of half part divided | segmented in the longitudinal direction which can be mutually assembled.

This has the advantage that it can be easily installed at the desired height position in the main support pile (10) driven on the soft ground, so that it is easily attached to the support pile of the support equipment to repair and reinforce the support equipment already completed and in use can do.

The support adapter 30 is fixedly installed in the holes of the main pile guide 21 and the skirt pile guide 23 to serve to horizontally support the upper support structure.

The support adapter 30 has an upper portion having a fixing flange 31 in an inner circumferential direction in which the upper support structure is fixed and the main pile guide 21 and the skirt pile guides 23; 23a, 23b, 23c, and 23d. The main body of the upper open type consisting of a lower portion having a fixing projection (33: 33a, 33b, 33c, 33d) coupled to the hole of the lower portion of the main pile guide 21 and the skirt pile guide 23 A hole 35 communicating with the hole is formed.

The fixing flange 31 of the upper portion of the support adapter 30 has a fixing hole 31a for fastening the bolt with the upper supporting structure at regular intervals.

The support adapter 30 coupled to and fastened to the pile guide main body 20 on the top of the driven main support pile 10 is horizontally measured by the wedge action between the pile guide main body if a deviation exists after measuring the horizontality. The fastening after adjustment ensures the installation stability of the upper support structure installed thereon.

On the other hand, according to one embodiment, the support adapter 30 is the file guide main body when the file guide main body 20 is fixed to a predetermined height position (see Fig. 8) of the lower portion of the main support pile 10 on which the pile guide body 20 is driven It may be fixed to the top of the main support pile 10, not the top of the (20).

This corresponds to the embodiment configured to adjust the height of the pile guide body 20 as needed according to the installation environment, such as terrain or geology of the soft ground, depth of the drive, in this case, the configuration of the support adapter of the embodiment The configuration of the adapter 30 is the same as the configuration omitted only the configuration of the lower fixing projection 33.

4 is a view showing a state in which a multi-support connector mechanism according to the present invention is installed except for a main support pile installed on the sea bottom and a support adapter in the support pile, and FIG. 5 is shown in FIG. 4 installed in the main support pile. FIG. 6 is a view illustrating a state in which an auxiliary support pile is installed in the multi-type support connector mechanism of the present invention, and FIG. 6 is an exploded view before coupling between the support adapter and the pile guide and the support adapter in the installation state of FIG. 5. 7 is a perspective view showing a state in which the multi-type support connector mechanism and the support pile of the present invention are coupled as shown in FIG. 6, and FIG. 8 is a multi-type of the present invention in a state where the support adapter is not installed. It is a figure which shows the state in which the support connector mechanism was installed in the position adjacent to the sea bottom.

Hereinafter, the filing operation | work using the support connector mechanism of the soft ground support pile of the structure mentioned above with reference to these drawings is demonstrated.

First, the main support pile main body to be press-fitted to the sea bottom of the water (S) to be inserted to a certain depth in the bulge (SB) by the weight of the pile itself, and then using a known helm to drive the head of the support pile Insert the file up to the required depth (see left figure in FIG. 4).

The main pile guide 21 of the pile guide main body 20 of the support connector mechanism according to the present invention described above is inserted into the driven main support pile 10 to lower the support pile to a desired height position, or the pile guide. In the case of the split type in which the main body 20 is divided, the main pile guide 21 and the main support pile 10 of the pile guide main body 20 are fixed to each other using the injected grout after assembling at a desired height position of the supporting pile. Or by swaging using hydraulic pressure (see the right figure of FIG. 4; in FIG. 4, the main body 20 is installed on the top of the main support pile 10).

Then, the auxiliary support pile 13 is inserted through the skirt pile guide 23 of the pile guide main body 20 and driven to a predetermined depth, and then grout is injected through a reach rod or sway using hydraulic pressure. In this way, the skirt pile guide 23 and the assisted auxiliary support pile 13 are bonded to each other (see FIG. 5).

Then, the filing using the support connector mechanism according to the present invention by cutting and arranging the projecting head portion of the finished pile file and leveling the support adapter 30 to the guide body 20 by leveling the upper structure, and Complete the adapter installation work (see FIGS. 6 and 7).

On the other hand, as described above, the pile guide body 20 can be configured to adjust the height according to the needs according to the installation environment, such as terrain or geology of the soft ground, depth of the rudder, as shown in FIG. The pile guide body 20 is directly fixed to the upper portion, and the auxiliary pile 13 can be driven to a predetermined depth through the skirt pile guide 23, and the support adapter is mounted on the driven main support pile 10. 30) can be installed.

1 is an exploded perspective view of a multi-type support connector mechanism of a support pile for soft ground according to the present invention,

2 is a top and bottom perspective view of the support adapter of the multi-type support connector mechanism according to the present invention;

3 is a top view schematically showing a state in which a support pile is installed in the multi-type support connector mechanism of the present invention;

4 is a view showing a state in which a multi-support connector mechanism according to the present invention is installed except for a support adapter in a main support pile and a support pile installed on the sea bottom;

5 is a view showing a state in which the auxiliary support file is installed in the multi-type support connector mechanism of the present invention shown in FIG. 4 installed in the main support file,

FIG. 6 is an exploded view illustrating a state in which the support adapter is installed in the installation state of FIG. 5 and before coupling between the support adapter and the pile guide; FIG.

FIG. 7 is a perspective view showing a state in which the multi-type support connector mechanism and the support pile of the present invention are coupled as shown in FIG. 6,

Fig. 8 is a view showing a state in which the multi-type support connector mechanism of the present invention is installed in a position adjacent to the sea bottom without the support adapter installed.

Claims (11)

Multi-support connector mechanism with single support pile for soft ground: Main pile guide attached to a predetermined height of the main support pile and a plurality of skirt pile guides are inclinedly fixed to the outer surface of the pile guide and the auxiliary support pile is installed therethrough so that the main support pile installed in the soft ground is penetrated. A file guide body made up of; And a support adapter fixedly installed on an upper portion of the main support pile driven on the soft ground to horizontally support the upper support structure. According to claim 1, The support adapter is installed so as to be fixed in the hole of the guide and the skirt pile guide, the upper and the main pile guide and the skirt pile having a fixing flange in the circumferential direction in which the upper support structure is fixed Single upper support body having a lower opening having a fixing projection coupled to the hole of the guide, the lower portion is a single support for soft ground, characterized in that the hole formed in communication with the hole of the main pile guide and the skirt pile guide Multi-type support connector mechanism for piles. According to claim 1, wherein the support adapter is characterized in that it has a top of the main body consisting of an upper portion having a fixed flange of the inner circumferential direction in which the upper support structure is fixedly installed and a lower portion coupled to the upper portion of the main support pile. Multi-type support connector mechanism of single support pile for soft ground. The soft ground of claim 1, wherein the main pile guide and the skirt pile guide have a cylindrical shape and are larger than diameters of the main support pile and the auxiliary support pile driven through the main pile guide and the skirt pile guide. Multi-type support connector mechanism with single support pile. According to claim 4, Single pile for soft ground, characterized in that between the pile guide and the support pile driven through it is provided with a rich rod or pressure uneven wedge for swaged bonding using a pressure-sensitive adhesive for fixing each other Multi-type support connector mechanism of the support pile. 5. The multi-type support connector mechanism of claim 4, wherein the pile guide and the support pile driven therethrough are welded together. The flexible support of claim 1, wherein a curved sheet is fixed to an outer surface of the main pile guide, and the skirt pile guide is fixedly fixed to the curved sheet. Instrument. The multi-support connector mechanism of claim 1, wherein the skirt pile guide is joined to at least one of a weld and a mechanical fastener to an outer surface of the main pile guide. 2. The multi-type support connector mechanism of claim 1, wherein the number of skirt pile guides is one or more. The multi-support connector mechanism of claim 1, wherein the inclination angle of the skirt pile guide is in the range of 0 ° to 45 °. 2. The multi-type support connector mechanism of claim 1, wherein the main pile guide is composed of a pair of longitudinally divided halves that can be assembled with each other.

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