KR20160149821A - A jig for truss structure legs and an offshore structure including the same - Google Patents

A jig for truss structure legs and an offshore structure including the same Download PDF

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Publication number
KR20160149821A
KR20160149821A KR1020150087523A KR20150087523A KR20160149821A KR 20160149821 A KR20160149821 A KR 20160149821A KR 1020150087523 A KR1020150087523 A KR 1020150087523A KR 20150087523 A KR20150087523 A KR 20150087523A KR 20160149821 A KR20160149821 A KR 20160149821A
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jig
setting piece
body plate
plate
concave surface
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KR1020150087523A
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Korean (ko)
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KR101741485B1 (en
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김명성
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삼성중공업 주식회사
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    • B63B9/00—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B9/065—

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  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

A jig for a truss structure leg and an offshore structure including the same are provided. The truss structure leg jig includes a plane body plate, wherein one side of the body plate comprises an arc-shaped concave surface concaved from one side to an interior of the body plate, and the arc-shaped concave surface includes a plurality of first toothed recesses formed along the arc-shaped concave surface.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a jig for a truss structure leg and an offshore structure including the same,

The present invention relates to a jig for a truss structure leg and an offshore structure including the same.

An offshore structure, particularly a vertical lift platform such as a jack-up jig or a wind turbine, includes legs fixed to the sea floor and is configured to be able to move up and down along the legs. Generally, the legs fixed to the seabed can be formed by the skeleton of X brace pipes connecting three or more cord pipes and cord pipes.

To support an offshore structure at sea, the legs secured to the seabed may have a length of, for example, 150 m to 200 m.

Korean Patent Publication No. KR 10-2012-0114454

Since the legs supporting the vertical lifting and lowering platform have a length of 150 m to 200 m, it is difficult to assemble and install them on the platform at once using conventional equipment.

Thus, the legs can be made of, for example, a plurality of leg units having a length of 10 to 50 meters, and the plurality of leg units can be welded together along their longitudinal direction to form one leg .

In order to ensure the mechanical strength and stability of the legs to be vertically oriented at sea, it is necessary that the legs are designed as, for example, straight lines. For this purpose, it is required that the leg units constituting the leg through welding be precisely aligned with respect to each other at the time of welding.

Accordingly, it is an object of the present invention to provide a jig capable of stably supporting a leg or a leg unit on a platform of an offshore structure and adjusting its position.

Another object of the present invention is to provide an offshore structure including legs with mechanical strength and stability.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to one aspect of the present invention, there is provided a jig for a marine truss structure leg comprising a plate body plate, wherein one side surface of the body plate is concave from the one side surface to the inside of the body plate Wherein the arcuate concave surface includes a plurality of first toothed recesses formed along the arcuate concave surface.

Also, one side of the body plate may further include two straight side surfaces, the arcuate concave surface being located between the two straight side surfaces,

The two straight sides include at least one second toothed recess formed along the two straight sides.

The apparatus may further include at least one setting piece disposed on the body plate at a predetermined distance from the one side of the body plate, wherein the at least one setting piece includes a support plate and a support plate vertically arranged, .

The at least one setting piece may include a first setting piece and a second setting piece, the foot plate of which is spaced from the two straight sides by a predetermined distance, respectively, and the foot plates of the first setting piece and the second setting piece, Face faces the two straight sides.

Also, the at least one setting piece includes a third setting piece whose base plate is spaced apart from the arcuate concave surface by a predetermined distance, and the base of the third setting piece faces the arc-shaped power surface.

The apparatus further includes at least one wedge-shaped support that is inserted into at least one of the first toothed recesses and the second toothed recesses.

The apparatus further includes at least one lug formed on an upper surface of the body plate.

According to an aspect of the present invention, there is provided an offshore structure comprising: a platform; A leg of a truss structure including three or more vertical cord pipes and an X brace pipe connecting the vertical cord pipes, the truss structure passing through the platform; And three or more jigs disposed adjacent to each of the vertical code pipes on the platform, wherein each jig is horizontally movable on one plane of each adjacent vertical code pipe.

Other specific details of the invention are included in the detailed description and drawings.

FIG. 1 is an exemplary view schematically showing an offshore structure according to an embodiment of the present invention.
Figure 2 is an exemplary view that schematically shows an example of installing a plurality of legs of the jack-up league illustrated in Figure 1. Figure 3 is a cross-sectional view of one leg unit and the other leg unit to be joined, illustrating a misaligned state Top view.
Fig. 4 is an exemplary view schematically illustrating vertical direction adjustment of a central axis of one leg unit. Fig.
5 is a perspective view showing a part of an offshore structure including a jig for a truss structure leg according to an embodiment of the present invention.
6 is a top view of a jig according to an embodiment of the present invention.
7 is a perspective view of a jig according to one embodiment of the present invention.
8 is a cross-sectional view of a portion of a jig and a leg disposed adjacent thereto in accordance with one embodiment of the present invention.
9 is a perspective view showing the wedge of Fig.
10 is an exemplary cross-sectional view of an offshore structure having a jig for a truss structure leg according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

Also, terms used herein are for the purpose of illustrating embodiments and are not intended to limit the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It should be understood that the terms comprising and / or comprising the terms used in the specification do not exclude the presence or addition of one or more other elements, steps and / or operations in addition to the stated elements, steps and / use. And "and / or" include each and any combination of one or more of the mentioned items.

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

1 is an exemplary view schematically showing a jack-up league as an example of a vertical lift-down type offshore structure.

Referring to FIG. 1, a jack-up rig is illustrated as an offshore structure according to an embodiment of the present invention, and a jack-up rig according to an embodiment of the present invention includes a derrick 10, a plurality of legs 20, . ≪ / RTI >

The plurality of legs 20 may be upright legs, one end of which is fixed to the seabed surface 50 and the other end is exposed to the outside of the ocean 40. The plurality of legs 20 may have a truss structure in which a plurality of pipes form a skeleton thereof. A sprue can 22 can be disposed at one end of the plurality of legs 20 and the plurality of legs 20 and the sea floor surface 50 can be stably fixed through the sprue can. The seabed surface 50 may be 150 to 200 m deep from the surface of the ocean 40.

The platform 30 can be connected to a plurality of legs 20 and is capable of ascending and descending along a plurality of legs 20. The level of the platform 30 can be adjusted so as to be spaced apart from the surface of the ocean by a certain distance, whereby the platform 30 can be stably maintained without being affected by waves, algae or the like on the surface of the ocean.

The derrick 10 is disposed at one side of the platform 30 and is used to drill equipment that drill the seabed 50 into the lower portion of the derrick 10, such as boreholes, drill bits, risers, Can be performed.

Fig. 2 is an exemplary view schematically showing an example of installing a plurality of legs of the jack-up league illustrated in Fig. 1. Fig.

Referring to FIG. 2, a vertical lift platform such as a jack-up rig is generally installed in the ocean with a depth of 150 m to 200 m, so that the legs must have a length of at least 150 m to 200 m. In order to install legs using conventional handling equipment such as cranes, the legs need to be made of a plurality of leg units having a length of, for example, 10 meters to 50 meters.

In Fig. 2, after one leg unit 23 is installed in the platform, another leg unit 24 is welded to one leg unit 23 is exemplified.

The platform 30 has been illustrated floating in the sea. However, the platform 30 may be placed onshore or may maintain its position in the sea through other supports.

The other leg unit 24 can be moved to the top of the platform 30, for example, using a floating crane (CRANE). The moved other leg unit 24 is moved to the upper portion of one leg unit 23 and one leg unit 23 and another leg unit 24 are precisely aligned along the alignment line AL, Both should be welded together.

For example, in the absence of an external force such as wind, the other leg unit 24 is expected to be aligned in a direction perpendicular to gravity. That is, the central axis of the other leg unit 24 can be aligned with the alignment line AL by adjusting the planar position of the floating crane CRANE with respect to the other upper leg unit 24.

On the other hand, one leg unit 23 mounted on the platform 30 may not have its center axis completely aligned with the alignment line AL in the vertical direction, i.e., the direction of its central axis is perpendicular to the direction of gravity Maybe not.

In addition, for precise alignment of the leg units, it may be necessary to adjust the horizontal fine position between the leg units, i.e., fine position adjustment between the leg units on a plane perpendicular to the direction of gravity.

This will be described in detail below with reference to FIG.

3 is a top view illustrating a state where one leg unit and another leg unit to be coupled thereto are misaligned.

Referring to FIG. 3, a top view of one leg unit 23 is shown in solid lines and a top view of the other leg unit 24 is shown in dotted lines. For the welding of the two leg units 23 and 24, the top views of both should be in perfect agreement. The other leg unit 24, which is moved through the crane, may be movable in a plane, i. E. In the x-direction (x) and y-direction (y), but the degree of fine- Or other constraining factors may limit the fine positioning of the other leg units 24 in the plane.

In this case, one leg unit 23 provided on the platform 30 can be finely adjusted on a plane to precisely align one leg unit 23 and the other leg units 24.

Illustratively, one leg unit 23 includes a first code pipe 210, a second code pipe 220, a third code pipe 230, and an x brace pipe 240 connecting each cord pipe Lt; / RTI >

For example, one leg unit 23 can be used for position adjustment M1 on the plane of the first code pipe 210, position adjustment M2 on the plane of the second code pipe 220, Horizontal movement on the plane of one leg unit 23, that is, horizontal movement on the plane of the center axis CL1 of one leg unit 23 can be achieved through the position adjustment M3 on the plane of the leg unit 23 have.

Further, the position adjustment M1 on the plane of the first code pipe 210, the position adjustment M2 on the plane of the second code pipe 220, and the position adjustment M3 on the plane of the third code pipe 230 By varying the direction and degree of adjustment, one leg unit 23 may be rotated (M4) about its central axis CL1.

By such fine movement M1, M2, M3 on the xy plane of one leg unit 23 or its center axis CL1 and rotation M4 about its center axis CL1, The leg unit 23 and its central axis CL1 of the leg unit 23 can be precisely aligned with the other leg unit 24 and its center axis CL2.

In addition, the position of the first cord pipe 210 on the plane (M1), the position of the second code pipe 220 on the plane (M2) and the position of the third code pipe 230 on the plane By varying the direction and the degree of adjustment, one leg unit 23 can be adjusted in the direction in which its center axis CL1 is perpendicular to the xy plane.

This will be described below with reference to FIG.

Fig. 4 is an exemplary view schematically illustrating vertical direction adjustment of a central axis of one leg unit. Fig.

Referring to FIGS. 3 and 4, FIG. 4 illustrates that the position adjustment M1 of the first code pipe 210 is made in the y-direction, that is, in the direction of its central axis CL1.

The position adjustment M1 of the first code pipe 210 may be interpreted as applying an external force F to the first code pipe 210 and one leg unit may be centered about its center of gravity CP It can be interpreted as rotating (M5). Such an operation of the rotation M5 can tilt or rotate the longitudinal direction of one leg unit 23, that is, the central axis direction with respect to the vertical direction (z direction).

If the longitudinal direction of one leg unit 23, or the direction of its central axis CL1, is not parallel to the desired alignment line or gravity direction, the fine alignment, as illustrated in FIG. 4, Or parallel to the direction of gravity.

3 and 4, the movement of one leg unit 23 and its central axis CL1 on the plane and the rotation thereof and the rotation about the vertical direction (z direction) have been described. As described above, the movement and rotation of the second cord pipe 220 can be performed by adjusting the position on the plane of the first cord pipe 210 constituting one leg unit 23, The direction of the position adjustment M3 on the plane of the second code pipe M2 and the third code pipe 230 and the degree of adjustment.

The present invention is characterized in that the positional adjustments M1, M2 and M3 for the respective code pipes as described above are carried out on one leg unit 23 as described above and on the plane of the central axis CL1 and in the vertical direction This is based on a special recognition that realization of movement or rotation is achieved.

Such position adjustments M1, M2, M3 can be achieved by jigs for truss structural legs according to an embodiment of the invention, which are described in detail below.

5 is a perspective view showing a part of an offshore structure including a jig for a truss structure leg according to an embodiment of the present invention.

5, an offshore structure according to an embodiment of the present invention includes a platform, a leg unit of a truss structure, and a plurality of jigs disposed adjacent to at least a part of the leg unit.

The leg unit of the truss structure is constituted by, for example, a first code pipe 210, a second code pipe 220, a third code pipe 230, and an x brace pipe 240 connecting the respective code pipes . One leg unit may pass through the through hole 32 through the platform 30 and lead to the lower portion of the platform 30. [ The first code pipe 210, the second code pipe 220 and the third code pipe 230 are respectively provided with a first rack gear 212, a second rack gear 222, (232) may be formed. Each rack gear can be used to rack and pinion gear engagement with the platform to raise and lower the platform from the legs, for example, when the floating structure, such as a jack-up rig, is completed.

In the illustrated embodiment, the leg unit has a triangular prism shape including three code pipes, but the present invention is not limited thereto. In another embodiment, the leg unit may be in the form of a quadrangular pillar containing four cord pipes, or a polygonal column comprising five or more cord pipes.

In the illustrated embodiment, the plurality of jigs includes a first jig 100, a second jig 102, and a third jig 104, and the first jig 100 is connected to the first cord pipe 210 The second jig 102 is disposed adjacent to the second code pipe 220 and the third jig 104 is disposed adjacent to the third code pipe 230. [ The first jig 100, the second jig 102 and the third jig 104 are connected to the platform 30 (30) via a first cord pipe 210, a second cord pipe 220 and a third cord pipe 230, On one plane parallel to the upper surface of the substrate.

That is, the first jig 100, the second jig 102, and the third jig 104 can be arranged in such a manner that each of the vertical cord pipes of one leg unit, as described above with reference to Figs. 3 and 4, So that one leg unit and its central axis are horizontally moved and rotated on a plane as well as rotated in a direction perpendicular to the plane.

The first jig 100, the second jig 102, and the third jig 104 have different positions and directions, and may be substantially the same shape.

6 is a top view of a jig according to an embodiment of the present invention. 7 is a perspective view of a jig according to one embodiment of the present invention. 8 is a cross-sectional view of a portion of a jig and a leg disposed adjacent thereto in accordance with one embodiment of the present invention. 9 is a perspective view showing the wedge of Fig.

6 to 8, a first jig 100 is illustrated as a jig according to an embodiment of the present invention. As described above, since the first jig 100, the second jig 102, and the third jig 104 have the same shape and only differ in the arrangement position and direction, the first jig 100, The second jig 102 and the third jig 104 will be collectively referred to as a jig.

6 to 9, a jig according to an embodiment of the present invention includes a body plate 110, at least one setting piece 140, 142, 144, 146 and at least one lug 150, 152 .

The body plate 110 may be formed of plate steel, for example, and may have a polygonal shape as a whole. The body plate 110 may be disposed on the platform 30 and one side thereof may be disposed adjacent to one of the cord pipes of the leg or leg unit constituting the truss structure. In FIG. 8, it has been illustrated that the first jig 100 is disposed adjacent to the first code pipe 210.

One side of the body plate 110 may include an arcuate concave surface 120 that is recessed from one side into the body plate 110. The arc-shaped concave surface 120 may be formed so that its surface corresponds to the shape of a part of the outer circumferential surface of the adjacent first code pipe 210. The arcuate concave surface 120 may also include a plurality of first toothed recesses 124 formed along the arcuate concave surface 120 thereof. In the illustrated embodiment, six first toothed recesses 124 are formed along arc-shaped concave surface 120. However, the present invention is not limited thereto, and the number and size of the first toothed recesses 124 can be adjusted as needed. More specifically, the arc-shaped concave surface 120 includes an arcuate curved surface 122, and the first toothed concave portion 124 can be formed by concave penetration in the direction of the normal to the arc-shaped curved surface 122.

In addition, one side of the body plate 110 may further include two straight sides 130. The arcuate concave surface 120 may be positioned between the two straight side surfaces 130. In addition, the two straight sides 130 may include one or more second toothed recesses 134 formed along two straight sides 130. More specifically, the two straight side surfaces 130 include a straight surface 132, and the second tooth concave portion 134 can be formed by concave penetration in the normal direction of the straight surface 132.

One or more setting pieces 140, 142, 144 and 146 are disposed on the body plate 110 at a distance from one side of the body plate 110. In one embodiment of the present invention, The first setting piece 140, the second setting piece 142, the third setting piece 144, and the fourth setting piece 146 are disposed.

Each of the setting pieces may have a T-shaped cross section with the support plate and the support plate vertically arranged. The operator can use the hydraulic device 148 to smoothly perform the positional movement on the plane of the first code pipe 210. At this time, the hydraulic device 148 is supported on the surface of the one of the one or more setting pieces A part of the first code pipe 210 can be pushed out.

In one embodiment of the present invention, the first setting piece 140 and the second piece are each arranged such that the foot plate is spaced a distance from the two straight side surfaces 130, and the third setting piece 144 and the fourth setting The piece 146 may be disposed such that the footplate is spaced a certain distance from the arcuate concave surface 120. The second setting piece 142 and the fourth setting piece 146 may be disposed symmetrically on the body plate 110 with respect to the first setting piece 140 and the third setting piece 144.

That is, the first setting piece 140 and the third setting piece 144 may be disposed in a region on one center line of symmetry that the main body plate 110 may be folded and folded, The second setting piece 142 and the fourth setting piece 146 may be disposed.

The two straight sides 130 may be parallel to the first rack gear 212 extending to both sides of the first cord pipe 210. The first setting piece 140 and the foot plate of the second setting piece 142 may be arranged so that their faces face the straight side surfaces 130 and the first rack gear 212. That is, in the illustrated embodiment, the hydraulic device 148 is disposed between the first setting piece 140 or the second setting piece 142 and the first rack gear 212 to rotate the first rack gear 212 in the y Direction. The first code pipe 210 and the first rack gear 212 can be further spaced in the y direction from the body plate 110 and are spaced apart in the second toothed recess 134 The first cord pipe 210 and the first rack gear 212 are supported by the wedge-shaped supporter 160 so that the first cord pipe 210 and the first rack gear 212 are supported by the wedge- It is possible to maintain the state of being separated from the body plate 110. [ The wedge-shaped support 160 may have a wedge shape that increases in height with respect to the direction in which the wedge-shaped support 160 is inserted, thereby adjusting the degree or depth of insertion of the wedge- The distance between the first cord pipe 210 and the first rack gear 212 supported by the bracket 160 on one side of the body plate 110 can be finely adjusted.

The foot plates of the third setting piece 144 and the fourth setting piece 146 may be arranged such that their faces face the arc-shaped concave surface 120 or the center point of the first code pipe 210. That is, in the illustrated embodiment, the hydraulic device 148 is disposed between the third setting piece 144 or the fourth setting piece 146 and the first code pipe 210, 1 cord pipe 210 in the radial direction. The first cord pipe 210 may be further spaced from its arcuate concave surface 120 in its radial direction and may be spaced apart from the first toothed recess 124 The first cord pipe 210 and the first rack gear 212 are supported by the wedge-shaped supporter 160 so that the first cord pipe 210 and the first rack gear 212 are spaced apart from the main plate 110 , In particular, the radial spacing of the first cord pipe 210 can be maintained. The wedge-shaped support 160 may have a wedge shape that increases in height with respect to the direction in which the wedge-shaped support 160 is inserted, thereby adjusting the degree or depth of insertion of the wedge- The distance between the first cord pipe 210 and the first rack gear 212 supported by the bracket 160 on one side of the body plate 110 can be finely adjusted.

Illustratively, when the first jig 100 according to an embodiment of the present invention is intended to move the first code pipe 210 in parallel in the y direction in the figure, the second toothed recess 134 is provided with a wedge- (160) is inserted to achieve the parallel movement. If the first jig 100 is to move the first code pipe 210 in parallel with the x-direction component in the figure, the wedge-shaped support 160 is inserted into the first toothed recess 124 It will achieve its translation.

That is, the jig according to the present invention can carry out the movement on the xy plane of one code pipe constituting the leg without complicated equipment with its unique structure.

One or more lugs may be formed on the top surface of the body plate 110 and may be securely fixed on the platform 30 by penetrating a support beam that may be coupled to the platform 30.

10 is an exemplary cross-sectional view of an offshore structure having a jig for a truss structure leg according to an embodiment of the present invention.

The positioning operation of one jig (first jig 100) with respect to one cord pipe (first cord pipe 210) has been described with reference to Figs. 6 and 9 above.

The lift-type offshore structure having a truss structure leg according to an embodiment of the present invention includes a plurality of jigs, and each jig is disposed adjacent to one cord pipe.

10, the first jig 100 is disposed adjacent to the first code pipe 210 and the second jig 102 is disposed adjacent to the second code pipe 220 And the third jig 104 may be disposed adjacent to the third code pipe 230.

As described above with reference to Figs. 3 and 4, with respect to one leg unit 23 provided on the platform 30, the position adjustment M1 on the plane of the first code pipe 210, 220 and the positional adjustment M3 on the plane of the third code pipe 230 are performed, each vertical code pipe and its central axis of one leg unit are moved in parallel on the xy plane And M4, as well as rotate in a direction perpendicular to the plane, for example in the direction of gravity (M5 in FIG. 4).

Thus, the center axis of one leg unit can be precisely aligned to the alignment line AL1, and can be precisely welded to other leg units without dimensional errors.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100: first jig 102: second jig
104: third jig 110: body plate
120: arcuate concave surface 130: straight side surface
124: first toothed recess 134: second toothed recess
210: first code pipe 220: second code pipe
230: Third code pipe

Claims (8)

And a plate body plate,
Wherein one side of the body plate includes an arcuate concave surface that is recessed from the one side surface into the interior of the body plate,
Wherein the arc-shaped concave surface comprises a plurality of first toothed recesses formed along the arc-shaped concave surface. The method according to claim 1,
Wherein one side of the body plate further comprises two straight side surfaces, the arcuate concave surface being located between the two straight side surfaces,
Wherein the two straight sides include at least one second toothed recess formed along the two straight sides. 3. The method of claim 2,
Further comprising one or more setting pieces disposed on the body plate at a predetermined distance from one side of the body plate,
Wherein the at least one setting piece has a T-shaped cross-section including a support plate and a support plate disposed perpendicularly to each other. The method of claim 3,
Wherein the at least one setting piece comprises a first setting piece and a second setting piece, the foot plate being spaced apart from the two straight sides by a predetermined distance,
Wherein the base plate of the first setting piece and the base plate of the second setting piece faces the two straight sides of the jig. The method of claim 3,
Wherein the at least one setting piece includes a third setting piece whose base plate is spaced a distance from the arcuate concave surface,
And the third palm of the third setting piece faces the arc-like power front surface of the jig. 3. The method of claim 2,
Further comprising at least one wedge-shaped support inserted into at least one of the first toothed recesses and the second toothed recesses. The method according to claim 1,
Further comprising at least one lug formed on an upper surface of the body plate. platform;
A leg of a truss structure including three or more vertical cord pipes and an X brace pipe connecting the vertical cord pipes, the truss structure passing through the platform; And
A plurality of jigs disposed adjacent to each vertical code pipe on the platform,
Each jig being capable of horizontally moving each adjacent vertical cord pipe on one plane.
KR1020150087523A 2015-06-19 2015-06-19 A jig for truss structure legs and an offshore structure including the same KR101741485B1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120114454A (en) 2011-04-07 2012-10-17 최광식 An electric power generation system on the water that has thermopower module and peripheral apparatus that uses the water flow for heatsink to maximize the efficiency

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120114454A (en) 2011-04-07 2012-10-17 최광식 An electric power generation system on the water that has thermopower module and peripheral apparatus that uses the water flow for heatsink to maximize the efficiency

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