KR101536532B1 - Transition piece for Adjusting Horizontality - Google Patents

Abstract

The present invention relates to a transition piece for performing slant joining between a tower and a foundation by using a cylindrical member having the same inclination and for easily adjusting the horizontal and vertical degrees of the structure through rotation between the members. To this end, the lower surface includes a cylindrical upper inclined portion 10 constituted by inclined surfaces at specific angles; And an upper surface of the upper inclined portion 10 and a lower inclined portion 12 of a cylindrical shape which are inclined at a specific angle and correspond to and contact with the lower surface of the upper inclined portion 10. The upper inclined portion 10 is rotated about the center of the cross- To provide a transition piece configured to match the horizontal and vertical degrees of the structure. According to the present invention, since the flattening work of the ground is unnecessary or minimized, the construction cost and the construction period due to the deletion of the additional process are reduced.

Description

{Transition piece for Adjusting Horizontality}

The present invention relates to a transition piece for adjusting the horizontal and vertical degrees of a structure. More specifically, the present invention relates to a transition piece for adjusting the horizontal and vertical degrees of a structure by means of a cylindrical member having the same inclination, And to a transition piece for facilitating centering and fixing.

The foundation of the marine uses mono files, suction bases, gravity bases and jacket bases. Mono files are the foundation of the most used offshore wind farms currently in use, with installation depths ranging from 25 to 30 meters and fixing large diameter files on the sea floor by hammering or drilling. In the case of a large-scale complex, the economical efficiency is excellent, but fatigue load or corrosion problems may occur in the member.

Suction Pile is a file installed by using the pressure difference between the inside and outside of the file generated by discharging the fluid such as water or air inside the file to the outside. It is used in submarine floors and is used for marine fixed and floating structure supports or anchors, such as oil drilling platforms, offshore wind power bases.

(2) It can be installed regardless of the size of the suction foundation. The larger the upper plate area, the smaller the suction pressure is. (3) The installation speed is fast enough to allow the installation of a single tube in a few hours. (4) It is possible to pull out with the positive pressure generated by injecting water into the suction base. (5) It is advantageous in that the penetration resistance is reduced by the seepage of the submarine bed at the bottom of the foundation at the time of installation.

The gravity type base is a basic type and the installation depth is up to 25m. It is simple and economical to produce, it requires the arrangement for the flattening of the seabed ground and requires special equipment to install it. It may cause noise and vibration problems at the time of hunting, and may cause fatigue load or corrosion problems of members. .

The jacket base is mainly used as a tripod type, and the installation depth can be applied from 20m to 80m. Pole or turbine is installed on the jacket structure, and the installation cost is higher than that of the monofile or gravity type foundation, but it is advantageous in moment resistance according to the horizontal force and there is an advantage that the processing of the seabed ground is unnecessary.

There is a possibility that the marine foundation is eccentric when the marine foundation or the marine structure is installed. 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.

The same problem exists in land structures as well as in marine structures. It is very difficult to solve the tower type land structure once it is eccentric, and if the structure is installed without the shaft being held, the operation of the equipment may be problematic.

There have been various conventional methods for adjusting the horizontal and vertical degrees of the foundation to prevent such eccentricity of the foundation.

In the case of gravity bases, as described in EP 1 777 348 A1, a separate work of flattening the seabed ground is required. 1 is a conceptual view showing a state in which a conventional gravity type foundation is installed. As shown in Fig. 1, although the gravity bases are used in relatively shallow seas, there is a drawback that the construction period and the construction cost due to the seam bottom seam work are increased.

In the case of a mono file, the structure is leveled by grouting with concrete between the transition piece and the mono file, as described in US 2011/0006538 A1 or WO 2013057459 A1. 2 is a cross-sectional view showing a transition piece installed in a conventional mono-file. As shown in FIG. 2, there is a disadvantage that the construction time and cost are increased because the underwater grouting work is required. In addition, there is a disadvantage that a large transition piece is required in order to adjust the level.

Therefore, there is a need for a member for adjusting the horizontal and vertical degrees of the structure quickly and accurately without a large transition piece or grouting operation.

US 2011/0006538 A1 WO 2013057459 A1 EP 1 777 348 A1

Accordingly, the present invention has been made to solve the above-described problems.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a transition piece for easily adjusting the horizontal and vertical degrees of a structure through rotation between members using a cylindrical member having the same inclination and performing slant joining between the tower and the foundation.

Another object of the present invention is to provide a transition piece which is easy to fix the rotation angle and is easily centered.

Hereinafter, specific means for achieving the object of the present invention will be described.

An object of the present invention is to provide a transition piece for connecting a foundation and a structure, wherein the lower surface comprises a columnar upper inclined portion composed of inclined surfaces at specific angles; A lower inclined portion in the form of a column, the upper surface being inclined at a specific angle and corresponding to the lower surface of the upper inclined portion; A hemispherical hemispherical protrusion protruding axially in the center of the lower surface of the upper inclined portion or the upper surface of the lower inclined portion; And a depression formed on an upper surface of the lower inclined portion and a lower surface of the upper inclined portion on a corresponding surface of the surface on which the hemispherical protrusion is formed and configured to surround at least a part of the hemispherical protrusion, And rotating the center of the transverse section about an axis to adjust the horizontal and vertical degrees of the structure.

Further, the depressed portion may have a hemispherical shape that is recessed in the axial direction so as to be fitted to the hemispherical protrusion.

The lower surface of the upper inclined portion and the upper surface of the lower inclined portion may be configured to mesh with each other in a stepped sawtooth structure.

A plurality of first inclined screw holes passing through the upper inclined portion in the longitudinal direction of the upper inclined portion and being elongated in the circumferential direction; And a plurality of second inclined screw holes corresponding to the first inclined portion screw holes and penetrating the lower inclined portion in the longitudinal direction of the lower inclined portion and being elongated in the circumferential direction .

A first axial alignment portion formed on an upper surface of the upper inclined portion so as to protrude in the axial direction; And a second axial alignment portion formed on the lower surface of the lower inclined portion in an axial direction, wherein the first axial alignment portion is configured to be fitted to a lower end portion of the structure, Wherein when the first axial alignment portion is engaged with the lower end portion of the structure, the upper inclined portion and the structure are configured to be coaxial, and when the second axial alignment portion is engaged with the upper end portion of the foundation, The lower inclined portion and the base may be coaxial.

An object of the present invention is to provide a transition piece for connecting a foundation and a structure, wherein a lower surface of the transition piece has a columnar inclined portion composed of an inclined surface at a certain angle; And a hemispherical hemispherical projection protruding axially from a center of a lower surface of the inclined portion, wherein at one end of the base and the structure, an inner flange or an inner flange protruding inwardly of the cross- And the inner flange or the inner plate provided at one end of the foundation has an upper surface made of an inclined surface having a specific angle and corresponding to the lower surface of the inclined portion and contacting And a depression provided on an upper surface of the inner flange or the inner plate of the base and configured to surround at least a part of the hemispherical protrusion, wherein the inclined portion is rotated about the center of the cross- And a transitional piece that is configured to match the horizontal and vertical degrees of the transitional pieces.

An object of the present invention is to provide a transition piece for connecting a foundation and a structure, the transition piece having an inclined portion in the form of a column, And a hemispherical hemispherical projection protruding axially from a center of a lower surface of the inclined portion, wherein at one end of the base and the structure, an inner flange or an inner flange protruding inwardly of the cross- And the inner flange or the inner plate provided at one end of the structure has a lower surface formed of an inclined surface having a specific angle and corresponding to the upper surface of the inclined portion, And a depression formed on the inner flange of the structure or on a lower surface of the inner plate and configured to surround at least a part of the hemispherical protrusion, wherein the inclined portion is rotated about the center of the cross- And a transitional piece that is configured to match the horizontal and vertical degrees of the transitional pieces.

As described above, the present invention has the following effects.

First, according to an embodiment of the present invention, there is an effect that centering and fixing of a transition piece having an inclined plane can be facilitated.

Second, according to one embodiment of the present invention, there is an effect that the bolt can be easily fixed even if the vertical piece is changed by rotating the transition piece.

Third, according to one embodiment of the present invention, since the flattening work of the seabed ground is unnecessary or minimized, the construction cost and the construction period due to the deletion of the additional process can be reduced.

Fourthly, according to the embodiment of the present invention, since the size of the structure for horizontal and vertical adjustment is minimized, the construction cost and construction period are reduced.

Fifth, according to an embodiment of the present invention, the horizontal and vertical adjustments are made possible on the sea surface, and the grouting work such as the transition piece and the mono file is deleted or minimized, thereby reducing the construction cost and construction time.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and, together with the description, And shall not be interpreted.
FIG. 1 is a conceptual view showing an installation state of a conventional gravity type foundation,
FIG. 2 is a sectional view showing a transition piece installed in a conventional mono file, FIG.
3 is a perspective view of an inclined portion according to an embodiment of the present invention,
4 is a conceptual diagram illustrating an angle change according to an amount of rotation of a transition piece according to an embodiment of the present invention;
FIG. 5 is an exploded view showing a combination of transition pieces according to an embodiment of the present invention; FIG.
FIG. 6 is an exploded view illustrating the engagement of an inclined portion provided with a hemispherical protrusion according to an embodiment of the present invention;
FIG. 7 is a side cross-sectional view illustrating a transition piece having a ball joint according to an embodiment of the present invention. FIG.
8 is an exploded view showing the engagement of a serrated inclined portion according to an embodiment of the present invention,
9 is an exploded view showing the engagement of a stepped serrated inclined portion according to an embodiment of the present invention,
FIG. 10 is a side sectional view showing a transition piece having an axial alignment portion according to an embodiment of the present invention, FIG.
11 is an exploded view illustrating the engagement of a transition piece coupled with an inner flange in accordance with one embodiment of the present invention;
12 is a cross-sectional view illustrating an example of engagement of a transition piece coupled with an inner flange according to an embodiment of the present invention;
Figure 13 is an exploded view illustrating the engagement of a transition piece coupled with an outer flange in accordance with one embodiment of the present invention;
Figure 14 is a cross-sectional view illustrating an example of engagement of a transition piece coupled with an outer flange in accordance with one embodiment of the present invention;
15 is a perspective view illustrating a marine wind power generation facility according to an embodiment of the present invention,
16 is a flowchart illustrating a method of constructing an offshore wind power generation facility according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following detailed description of the operation principle of the preferred embodiment of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

The same reference numerals are used for portions having similar functions and functions throughout the drawings. Throughout the specification, when a part is connected to another part, it includes not only a case where it is directly connected but also a case where the other part is indirectly connected with another part in between. In addition, the inclusion of an element does not exclude other elements, but may include other elements, unless specifically stated otherwise.

Although the following description has been made with reference to maritime bases and offshore structures, the scope of rights of the present invention is not limited to horizontal and vertical control of marine structures, but also includes land structures.

< Transition peace >

FIG. 3 is a perspective view of an inclined portion according to an embodiment of the present invention. FIG. 4 is a conceptual diagram illustrating an angle change according to an amount of rotation of a transition piece according to an embodiment of the present invention. And FIG. 3 to 5, a transition piece 1 according to an embodiment of the present invention includes an upper inclined portion 10, a lower inclined portion 12, an upper member 20, a lower member 22, And an inclined screw hole 14a. That is, the transition piece 1 may have an inclined surface at the stop, and horizontal and vertical alignment can be achieved through a certain angle of rotation. This inclined plane can be implemented in the following manner.

(1) an inclined portion constituted by two members of an upper inclined portion (10) and a lower inclined portion (12), (2) an inclined portion constituted by one member of an upper inclined portion (10) or a lower inclined portion (10) or a lower inclined portion (12), and the upper portion (20) or the lower portion (22) is provided with an inclined portion at one end of the upper portion (20) The inclined surface may be provided at one end of the marine foundation 5 or the marine foundation 5 may be provided with an inclined surface at one end of the tower 30 and the marine foundation 5 without inclination.

As shown in Fig. 3, the upper inclined portion 10 may be configured to have an inclined surface at a certain angle on the upper surface and a horizontal surface on the lower surface. The specific angle is preferably 1 to 10 degrees, and the upper surface may be engaged with the upper member 20. [ The lower surface is arranged to be in contact with the lower inclined portion 12 so as to adjust the horizontal and vertical degrees by the rotation of the upper inclined portion 10. It is made of steel with a diameter of 5m, so it can be lifted up with a crane, and then turned gently to adjust the angle. As shown in Fig. 4, the angle of the upper member 20 is changed according to the rotation, and the horizontal and vertical views of the installed tower 30 are matched. Adjusting a large angle such as 30 degrees is difficult due to the problem of stability, so the flattening operation of the seabed layer 40 may be required to some extent.

The lower inclined portion 12 may correspond to the upper inclined portion 10, the upper surface may be inclined at the same angle as the upper inclined portion 10, and the lower surface may be configured to be horizontal. If the sea bottom layer 40 is formed to be horizontal, it can not be used if it is composed of an inclined surface having an angle different from that of the upper inclined portion 10. As shown in Fig. 5, the upper inclined portion 10 is provided on the upper surface and the lower member 22 is provided on the lower surface. In the horizontal and vertical adjustment operation, the lower inclined portion 12 is rotated only the upper inclined portion 10 while being fixed to the lower member 22.

The inclined screw hole 14a has a structure for fixing the upper inclined portion 10 and the lower inclined portion 12 with a fastening member such as a screw. The inclined threaded hole 14a may be formed such that the bolt 15 passes through the upper inclined portion 10 and the lower inclined portion 12. The lower surface of the upper member 20 and the upper surface of the lower member 22 The transitional piece 1 can be fixed after the horizontal and vertical degrees are adjusted by constructing the inclined screw hole 14a corresponding to the surface. The bolt may be replaced with a fastening means such as a tent, a reinforcing bar, or the like.

The inclined threaded hole 14a may be elongated in the circumferential direction so that the upper inclined portion 10 or the lower inclined portion 12 can be rotated. On the other hand, the flange threaded hole 14b formed in the inner flange or the outer flange of the upper and lower members may be formed in a circular shape so that the upper and lower members are fixed.

Various problems may arise if the threaded hole is not made long in the circumferential direction like the inclined threaded hole 14a.

First, in order to fix the bolts after rotating the upper and lower inclined portions 10 and 12, there is a problem that the screw holes of the upper and lower inclined portions 10 and 12 must be precisely corresponded. In order to adjust the verticality of the transition pieces, the upper inclined portion 10 is slightly lifted by a crane. However, the operation of precisely aligning the screw holes is very difficult, the air is increased, and the cause of increasing the fatigue of the operator do.

Second, if the upper inclined portion 10 is rotated after inserting the screw bolt, the screw bolt may be bent. When the upper inclined portion 10 is rotated, the axial direction of the upper inclined portion 10 is changed and the verticality of the transition piece is adjusted. Therefore, the inserted screw bolt must be bent, It is quite difficult to insert the bolts.

Third, if the upper inclined portion 10 is rotated after inserting the screw bolt, the insertion length of the screw bolt is changed as the screw bolt is bent. This means that the fixing position of the fastening means such as a nut is changed, and if the screw bolt is rebounded, the fixing force of the fastening means may be changed.

According to the inclined screw hole 14a according to the embodiment of the present invention, it is confirmed that the above problems are solved.

If the hemispherical protrusion, the hemispherical depression, the saw tooth structure, the shaft fitting, and the like, which are configured to engage with the inclined surfaces of the upper inclined portion 10 and the lower inclined portion 12 are constituted, The angle of rotation can be fixed, and the angle of bend can be easily predicted. Hereinafter, the coupling relation between the hemispherical protrusion, the hemispherical depression, the saw tooth structure, the shaft fitting portion, and the upper and lower members will be discussed.

With respect to the hemispherical protrusion, Figure 6 is an exploded view showing the engagement of the bezel with hemispherical protrusion according to one embodiment of the present invention. The hemispherical protrusion 16a may protrude in the shape of a hemisphere at the center of the inclined surface as shown in Fig. 6, and may be configured to be male and female together with the hemispherical depression 16b. When the hemispherical projection 16a is formed in the upper inclined portion 10, the hemispherical depression portion 16b may correspond to the lower inclination portion 12, and the hemispherical projection 16a may be formed in the lower inclination portion 12 The hemispherical depression 16b may be formed in the lower inclined portion 12.

The hemispherical protrusion 16a is hemispherical in shape with a curved outer surface to facilitate insertion into the hemispherical depression 16b, and may be formed at the center of the inclined surface. The hemispherical projecting portion 16a and the hemispherical depression 16b allow the center slider to slide smoothly along the spherical surface and to align the center even if the upper slope portion 10 and the lower slope portion 12 come into contact with each other. The hemispherical projecting portion 16a and the hemispherical depression 16b are formed in a hemispherical shape so that even when the axial direction of the upper inclined portion 10 is twisted by a specific angle due to the rotation of the upper inclined portion 10, 16a and the hemispherical depressed portion 16b are shaped without being separated from each other, so that the upper inclined portion 10 can be fixed without being slid. If the protrusions are formed in the shape of a column, it is impossible to turn the axial direction of the upper inclined portion 10 by a specific angle due to the rotation of the upper inclined portion 10, or a problem that the depressed portion must be configured to be considerably wider.

Since the upper inclined portion 10 is made up of steel having a diameter of about 5 m and is made up of several tons of steel, it is lifted up with a crane to slightly raise the angle, and the angle is adjusted. In fact, it is very difficult to precisely adjust the centering. However, with the configuration of the hemispherical projecting portion 16a and the hemispherical depression 16b, the centering of the transition piece 1 is facilitated and the upper inclined portion 10 does not slide along the inclined surface of the lower inclined portion 12 , The upper inclined portion 10 can be easily rotated, and the operator can adjust the angle of rotation without worrying about centering.

At least one of the hemispherical projecting portion 16a and the hemispherical depression 16b may be directly formed on the upper and lower members when only one inclined portion is provided or when the upper and lower members are directly inclined.

In particular, if the hemispherical depression 16a is configured so as to be able to be rotated without moving, the hemispherical depression 16b may be formed without being spaced apart from the hemispherical projection 16a in terms of stability, ) Is not very important. That is, the hemispherical depression 16b may be configured to surround at least a part of the hemispherical projection 16a so that the hemispherical projection 16a is rotated without moving or the hemispherical depression 16b is rotated without moving It does not deviate from the object of the present invention. For example, the hemispherical depression 16b may be in the form of a hollow cylinder having the same diameter as the hemispherical projection 16a.

The hemispherical protrusion 16a and the hemispherical depression 16b may be replaced by a ball joint. 7 is a side cross-sectional view illustrating a transition piece having a ball joint according to an embodiment of the present invention. 7, the ball joint includes a ball stud 17a protruding from a central axis of the inclined portion and having a ball protruding therefrom, and a ball housing 17b surrounding the ball so that the ball can rotate freely while maintaining its position .

With regard to the teeth, FIG. 8 is an exploded view showing the engagement of a serrated inclined portion according to an embodiment of the present invention. The teeth 18a may be configured to correspond to the upper swash plate 10 and the lower swash plate 12 as shown in FIG. In the case of forming the teeth 18a, the direction of rotation of the upper swash plate 10 may be limited. With the configuration of the tooth 18a, the angle provided by the transition piece 1 can be shaped and the rotation angle can be fixed.

With regard to the stepped teeth, Figure 9 is an exploded view showing the engagement of the stepped serrated inclination according to an embodiment of the invention. The stepped teeth 18b may be configured to correspond to the upper inclined portion 10 and the lower inclined portion 12 as shown in FIG. The stepped teeth 18b constituted in a stepped shape can form the toothed surface horizontally so that the upper inclined portion 10 does not slide along the inclined surface and can shape the angle provided by the transition piece 1, There is an advantage that it can be fixed.

The upper end of the upper member 20 may be connected to a structure such as the tower 30 and fixed by a grouting operation or the like. Or the upper member 20 may refer to the lower end of the tower 30. The lower end of the upper member 20 can be engaged with the upper inclined portion 10. And the upper inclined portion 10 and the lower inclined portion 12 can be fixed by being engaged with the lower member 22 at the lower end. There is a method of fixing an inner flange or an outer flange to fix the inner flange.

The lower end of the lower member 22 may be connected to the marine foundation 5 and fixed by a grouting operation or the like. Or the lower member 22 may mean the upper end of the marine foundation 5. The upper end of the lower member 22 can be engaged with the lower inclined portion 12. [ Also, the upper inclined portion 10 and the lower inclined portion 12 can be fixed by being engaged with the upper member 20 at the upper end. As a method for fixing the inner flange, there is a method of constructing the inner flange or constructing the outer flange.

There may arise a problem of centering in which the central axes must be aligned even when the upper and lower members and the upper and lower inclined portions are engaged. When a crane is used, precise centering becomes very difficult. Therefore, according to an embodiment of the present invention, an axial alignment portion 19 may be formed on the upper surface of the upper inclined portion 10 and the lower surface of the lower inclined portion 12 in an axial direction.

10 is a side sectional view showing a transition piece having an axial alignment portion according to an embodiment of the present invention. As shown in Fig. 10, according to the shaft fitting portion 19 according to the embodiment of the present invention, the time for fixing the upper and lower inclined portions to the upper and lower members is significantly shortened, and the effect of precise centering is generated.

In order to engage the upper and lower members and fix the transition piece, an inner flange and an outer flange may be formed on the upper and lower members.

Fig. 11 is an exploded view showing the engagement of a transition piece to be engaged with an inner flange according to an embodiment of the present invention. Fig. 12 is an exploded perspective view showing an inner flange and an inner flange according to an embodiment of the present invention. Sectional view showing an example of coupling of transition pieces to be combined. 11 and 12, a flange is formed inward at the lower end of the upper member 20 and the upper end of the lower member 22 when the inner flange is formed in the upper and lower members, and flange screw holes 14b The transition piece 1 constructed as described above can be configured to correspond to the inclined screw hole 14a and the transition piece 1 constructed as described above is constituted by the upper member 20, the upper inclined portion 10, the lower inclined portion 12, the lower member 22 Is integrally fixedly coupled by the fastening means. The fastening means may mean not only the combination of the bolt 15 and the nut but also rivets, reinforcing bars, tendons, and the like. Or the flange threaded holes 14b may be formed on the side surfaces of the upper member 20 and the lower member 22 to fix the upper and lower inclined portions 10 and 12. When the inner flange structure is used, the inner work is facilitated, the corrosion due to salt corrosion is reduced, and the angle is easily corrected.

12 (a), an inclined surface is provided at the lower end of the upper member 20, and an inclined surface is provided at the upper end of the lower member 22 and is coupled without a separate member. 12 (b) shows an example in which both the upper and lower inclined portions 10 and 12 are provided. FIG. 12 (c) shows an example in which only the lower inclined portion 12 is provided, (d) shows an example in which only the upper inclined portion 10 is provided. 12E shows an example in which the upper inclined portion 10 and the lower inclined portion 12 are fastened at the side surfaces of the upper member 20 and the lower member 22, respectively.

13 is an exploded view illustrating the engagement of a transition piece coupled with an outer flange according to an embodiment of the present invention, and Fig. 14 is an exploded perspective view of an outer flange according to an embodiment of the present invention. Fig. Fig. 3 is a cross-sectional view showing an example of engagement of transition pieces to be combined with one another. When the outer flange is constructed as shown in FIGS. 13 and 14, the lower member 22 may be provided with an upper flange 21, which is a flange of a circular plate having a diameter larger than the outer diameter, A lower flange 23 may be provided on the upper end of the upper flange 21 to correspond to the upper flange 21. The upper flange 21 and the lower flange 23 may be provided with a plurality of flange threaded holes 14b so that they can be fixedly coupled by a fastening mechanism such as bolt 15 fastening. The use of the outer flange structure has a stronger fixing force than the inner flange structure, so that the inclined portion composed of the upper inclined portion 10 and the lower inclined portion 12 does not have to be fixed separately.

14A shows an example in which both the upper and lower inclined portions 10 and 12 are provided and FIG. 14B shows an example in which only the lower inclined portion 12 is provided. (c) shows an example in which only the upper inclined portion 10 is provided. FIG. 14 (d) shows an example in which an inclined surface is provided at the lower end of the upper member 20, and an inclined surface is provided at the upper end of the lower member 22 and is joined without a separate member.

As described above, the inclined portion may be composed of two members, the upper inclined portion 10 and the lower inclined portion 12. In addition, an inclined surface corresponding to the inclined portion may be formed at one end of the upper member 20 or the lower member 22, and the object of the present invention can also be achieved by using the inclined portion as a single member. Instead of the upper member 20 and the lower member 22, an inclined surface may be provided directly at one end of the tower 30 or the marine foundation 5. [ This has the effect of reducing the number of members and shortening the component cost and construction time.

Further, it is also possible to constitute an inclined surface so as to correspond to one end of the upper member 20 and the lower member 22, and to achieve the object of the present invention even when the upper and lower inclined portions are omitted. The upper member 20 or the lower member 22 itself may mean the tower 30 or the marine foundation 5. This also has the effect of reducing the number of members and shortening the component cost and construction period.

In the case where the inclined portion is constituted by two members, namely, the upper inclined portion 10 and the lower inclined portion 12, the number of parts increases, The tower 30 itself or the upper member 20 is slightly lifted and rotated by a crane by rotating the upper inclined portion 10 to adjust the horizontal and vertical degrees, It is easier and less costly than matching. This is because a larger crane is required to lift the tower 30 itself or the upper member 20 which is heavier than the upper inclined portion 10.

<Basis of the sea>

The marine foundation 5 according to an embodiment of the present invention may have a lower end fixed to the seabed layer 40 and a slope at a certain angle at the upper end. By providing the upper end portion with the inclined surface having the specific angle, there is an effect of reducing the cost of parts in which the lower inclined portion 12 is omitted. Therefore, the marine foundation 5 according to the embodiment of the present invention can directly join the upper member 20 or the tower 30 having the upper inclined portion 10 or the inclined surface at the upper end.

In addition, an inner flange and an outer flange may be provided for fixed engagement, and a plurality of flange threaded holes 14b may be provided on the lower surface of the upper member 20 and the upper surface of the lower member 22 for the inner flange And a flange including a plurality of flange threaded holes 14b and formed of a circular plate having a larger diameter than the outer diameter at the upper end portion may be provided outside the upper and lower members for the outer flange.

The hemispherical protrusion 16a and the hemispherical depression 16b, the ball joint or the tooth 18a and the stepped tooth 18b may be formed on the inclined surface formed on the upper surface of the marine foundation 5. [ With such a configuration, the center of the upper and lower inclined portions can be easily adjusted, the provided angle can be shaped, and the rotation angle can be fixed. When these configurations are used together with the inclined screw holes 14a which are elongated in the circumferential direction on the upper and lower inclined portions, the angle correcting operation of the transition piece 1 is remarkably facilitated and the effect of precision is generated.

The marine foundation 5 according to an embodiment of the present invention can include both marine bases such as mono files, suction files, gravity bases, jacket types, and hybrid types.

If the inclined portion is used as one member or if the inclined portion is omitted, there is an effect that the number of members is reduced and the cost of components and the construction period are shortened. In the case of using the inclined portion as two members, there is an advantage in that it can be used as it is in the conventionally produced tower 30 and the marine foundation 5, 10 is rotated to adjust the horizontal and vertical degrees so that the tower 30 itself and the upper member 20 can be easily and inexpensive to rotate horizontally and vertically by slightly lifting the boat with a floating crane.

<Offshore wind power generation facility>

One embodiment to which the present invention is applied is an offshore wind power generation facility. The structure according to one embodiment of the present invention includes not only an offshore wind power generation facility, but also various kinds of bridges, a support for a drilling plant, a land tower, and the like, but an offshore wind power generation facility will be described as a representative example.

15 is a perspective view illustrating a marine wind power generation facility according to an embodiment of the present invention. 15, the offshore wind power generation facility 3 according to an embodiment of the present invention includes a tower 30, a blade 32, a nacelle 34, a transition piece 1, a marine foundation 5, &Lt; / RTI &gt;

The tower 30, the blades 32, and the nacelle 34 are components of a conventional offshore wind farm. However, according to the embodiment of the present invention, the lower end of the tower 30 is provided with the inclined surface at a specific angle, and the lower inclined portion 12, the lower member 22 having the inclined surface, or the marine foundation 5 having the inclined surface .

As described above, the transition piece 1 may have an inclined surface. In order to realize such an inclined surface, the transition piece 1 may be configured as follows. (1) an inclined portion constituted by two members of an upper inclined portion (10) and a lower inclined portion (12), (2) an inclined portion constituted by one member of an upper inclined portion (10) or a lower inclined portion (10) or a lower inclined portion (12), and the upper portion (20) or the lower portion (22) is provided with an inclined portion at one end of the upper portion (20) The inclined surface may be provided at one end of the marine foundation 5 or the marine foundation 5 may be provided with an inclined surface at one end of the tower 30 and the marine foundation 5 without inclination.

As discussed above, the marine foundation 5 may or may not have its own inclined surface at one end. The upper surface of the marine foundation 5 is joined to the upper inclined portion 10, the upper member 20 having the inclined surface at the lower end and the tower 30 having the inclined surface at the lower end thereof, .

If the inclined portion is used as one member or if the inclined portion is omitted, there is an effect that the number of members is reduced and the cost of components and the construction period are shortened. In the case of using the inclined portion as two members, there is an advantage in that it can be used as it is in the conventionally produced tower 30 and the marine foundation 5, 10 is rotated to adjust the horizontal and vertical degrees so that the tower 30 itself and the upper member 20 can be easily and inexpensive to rotate horizontally and vertically by slightly lifting the boat with a floating crane.

<Offshore wind power generation facility construction method>

The structure according to one embodiment of the present invention includes not only an offshore wind power generation facility, but also various kinds of bridges, a support for a drilling plant, a land tower, and the like, but an offshore wind power generation facility will be described as a representative example.

16 is a flowchart illustrating a method of constructing an offshore wind power generation facility according to an embodiment of the present invention. As shown in FIG. 16, may be composed of a basic installation step S10, an inclined part installation step S20, a horizontal adjustment step S30, and a tower installation step S40.

The marine foundation installation step S10 is a step of installing the marine foundation 5 on the sea bed layer 40. [ In other words, it is a step such as propelling a mono file or injecting concrete into a gravity-based caisson. The marine foundation 5 may be a marine foundation 5 according to one embodiment of the present invention.

The slope installation step S20 is a step of installing the transition piece 1 according to an embodiment of the present invention on the upper surface of the marine foundation 5. [ The lower inclined portion 12 is roughly adjusted and fixed to the marine foundation 5, and the upper inclined portion 10 is placed thereon. At this time, according to the shaft fitting portion 19 according to the embodiment of the present invention, the time for fixing the lower inclined portion 12 to the marine foundation 5 is considerably shortened, and the effect of precise centering is generated. According to the hemispherical projecting portion 16a and the hemispherical depression 16b according to the embodiment of the present invention, the centering is automatically solved only by placing the upper inclined portion 10 and the upper inclined portion 10 is not slid Effect is generated.

In the horizontal adjustment step S30, the upper inclined portion 10 is rotated to adjust the horizontal and vertical degrees. Since the upper inclined portion 10 is made of a steel material having a diameter of 5 m and has a weight of several tons, the elevation portion 10 is slightly lifted up with a floating crane and rotated to adjust the angle. The adjustment range is preferably 1 to 10 degrees, and the adjustment range is preferably 2 to 3 degrees. In this case, when the screw hole is circular, the upper inclined portion 10 and the lower inclined portion 12 need to be adjusted to correspond to the screw holes 14, and the inclined portion screw hole 14a according to the embodiment of the present invention, There is an effect that the fastening can be performed even if the screw holes do not correspond exactly. When the horizontal and vertical degrees are adjusted, the set angle can be fixed using the fastening mechanism.

The tower installation step S40 is a step of installing the tower 30 provided with the blades 32 and nacelle 34 on the upper side of the transition piece 1. [ The tower 30 can be directly coupled to the upper inclined portion 10 or inserted into the upper member 20 of the transition piece 1 and then fixedly connected thereto through a grouting operation or a fastening mechanism. At this time, according to the shaft fitting portion 19 according to the embodiment of the present invention, the time for fixing the tower 5 or the upper member 20 to the upper inclined portion 10 is considerably shortened, do.

The offshore wind power generation facility 3 constructed according to the embodiment of the present invention has the effect of reducing the construction cost and the construction period due to the elimination of the additional process since the flattening work of the seabed ground is unnecessary or minimized on the gravity type foundation, Since the size of the structure for horizontal and vertical adjustment is minimized, it is possible to reduce the construction cost and construction time, and it is possible to adjust the horizontal and vertical degree on the sea surface and to remove the transition piece and monofile grouting So that the construction cost and construction period can be reduced.

The sizes, positions, and arrangements of the inclined portion, the screw hole, the bolt, the hemispherical projection, the hemispherical depression, the serrations, the upper member, and the lower member are not limited to the drawings. In order to achieve the object of the present invention, It is preferable to be determined depending on the material, structure, strength and type of the structure.

Although the above description has been made with reference to maritime bases and marine structures, the scope of rights of the present invention is not limited to horizontal and vertical control of maritime structures, and may include land structures as well. However, since the construction is very difficult at sea, the transition piece according to an embodiment of the present invention may have greater utility at sea than at land.

As described above, those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

1: Transition piece
3: offshore wind power generation facility
5: Marine Basics
10: upper inclined portion
12: Lower inclined portion
14a: inclined screw hole
14b: flange screw hole
15: Bolt
16a: Hemispheric protrusion
16b: hemispherical depression 16b:
17a: ball stud
17b: ball housing
18a: toothed
18b: stepped teeth
19:
20: upper member
21: Upper flange
22: Lower member
24: Lower flange
30: Towers
32: Blade
34: Nussel
40: submarine floor

Claims (7)

In a transition piece connecting a foundation and a structure,
A lower inclined portion in the form of a column having a slope at a specific angle;
A lower inclined portion in the form of a column, the upper surface being inclined at a specific angle and corresponding to the lower surface of the upper inclined portion;
A hemispherical hemispherical protrusion protruding axially in the center of the lower surface of the upper inclined portion or the upper surface of the lower inclined portion; And
A depression formed on an upper surface of the lower inclined portion and a lower surface of the upper inclined portion on a corresponding surface of the surface on which the hemispherical protrusion is formed and to surround at least a part of the hemispherical protrusion;
Lt; / RTI &gt;
Wherein the upper inclined portion is configured to pivot about a transverse center about an axis to align the horizontal and vertical planes of the structure.
The method according to claim 1,
Wherein the depressed portion has a hemispherical shape which is recessed in the axial direction so as to be fitted to the hemispherical protrusion.
The method according to claim 1,
Wherein the lower surface of the upper inclined portion and the upper surface of the lower inclined portion are configured to mesh with each other in a stepped sawtooth configuration.
The method according to claim 1,
A plurality of first inclined screw holes passing through the upper inclined portion in the longitudinal direction of the upper inclined portion and being elongated in the circumferential direction; And
A plurality of second inclined screw holes corresponding to the first inclined portion screw holes, penetrating the lower inclined portion in the longitudinal direction of the lower inclined portion and being elongated in the circumferential direction;
Wherein the transition piece further comprises at least one of the following:
The method according to claim 1,
A first axial alignment portion formed on an upper surface of the upper inclined portion so as to protrude in the axial direction; And
A second axis-fitting portion protruding axially from a lower surface of the lower inclined portion;
Further comprising:
Wherein the first axis alignment portion is configured to be fitted to the lower end portion of the structure,
The second shaft-fitting portion is configured to be fitted to the upper end of the base,
Wherein when the first shaft engagement portion is engaged with the lower end portion of the structure, the upper inclined portion and the structure are coaxial,
And the second inclined portion and the base are coaxial with each other when the second axial engagement portion is engaged with the upper end portion of the foundation.
In a transition piece connecting a foundation and a structure,
The lower surface includes a columnar inclined portion composed of an inclined surface at a specific angle; And
A hemispherical hemispherical protrusion protruding axially from a center of a lower surface of the inclined portion;
Lt; / RTI &gt;
An inner flange protruding inwardly from the base and the transverse section of the structure or a plate-shaped inner plate closing the base and one end of the structure are provided at one end of the foundation and the structure,
Wherein the inner flange or the inner plate provided at one end of the base is configured such that the upper surface is formed of an inclined surface having a specific angle and corresponds to the lower surface of the inclined portion,
A depression provided on an upper surface of the inner flange or the inner plate of the base, the depression being configured to surround at least a part of the hemispherical protrusion;
Further comprising:
Wherein the inclined portion is configured to rotate the center of the cross section about an axis to align the horizontal and vertical planes of the structure.
In a transition piece connecting a foundation and a structure,
The upper surface has a columnar inclined portion composed of an inclined surface at a specific angle; And
A hemispherical hemispherical protrusion protruding axially from a center of a lower surface of the inclined portion;
Lt; / RTI &gt;
An inner flange protruding inwardly from the base and the transverse section of the structure or a plate-shaped inner plate closing the base and one end of the structure are provided at one end of the foundation and the structure,
Wherein the inner flange or the inner plate provided at one end of the structure is configured such that the lower surface is formed of an inclined surface having a specific angle and corresponds to the upper surface of the inclined portion,
A depression formed on the inner flange of the structure or the lower surface of the inner plate, the depression being configured to surround at least a part of the hemispherical protrusion;
Further comprising:
Wherein the inclined portion is configured to rotate the center of the cross section about an axis to align the horizontal and vertical planes of the structure.

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