CN103373439B - Stull in building for semi-submerged platform and semi-submerged platform method of construction - Google Patents

Abstract

The invention relates to a construction method of a semi-submersible platform and a cross brace used in the construction of the semi-submersible platform. The cross brace is used to connect between the port side floating body and the starboard side floating body of the lower hull, and includes a truss type cross brace main body, a first hinged seat and a second hinged seat. The main body of the truss type strut has a first end and a second end, the first end is provided with a first hinged part, and the second end is provided with a second hinged part; A hinge part is hinged; the second hinge seat is used to be arranged on the starboard buoy to be hinged with the second hinge part. The present invention connects the left and starboard buoys into a whole through the arrangement of truss-type cross braces, and adopts a hinged method to connect the floating bodies on the left and starboard sides into a whole, so that the closing operation during the construction of the semi-submersible platform is simple and easy, and after the closing is completed, it only needs to release the hinged joint. The removal of the cross brace effectively avoids the carbon planing and grinding work on the connection position of the hull, and reduces the construction cost.

Description

The cross brace used in the construction of the semi-submersible platform and the construction method of the semi-submersible platform

technical field

The invention relates to the technical field of semi-submersible platform construction, in particular to a semi-submersible platform construction method and a cross brace used in the semi-submersible platform construction.

Background technique

The application number is "201010111292.8", the announcement number is "CN102145734A", and the invention name is "Integral Closing Method for Semi-submersible Drilling Platform". The hull can be well transported into the dock and positioned underground. However, in the actual construction of the semi-submersible platform, the lower hull has a double-floating body structure, that is, the lower hull is composed of two floating bodies on the left and starboard sides, and there is no cross brace connection between the floating bodies on the left and starboard sides. The lower hull is independently launched and floated, so the structure without cross braces has an impact on the relative position positioning and the stability of independent floating during the assembly process of the left and starboard buoys, such as launching and closing, especially when the lower hull of the platform is single. When the side floating body is not stable enough to float independently, the scheme of integrally closing the two modules of the upper hull and the lower hull of the platform cannot be realized. If temporary cross braces are added and the connection between the added temporary cross braces and the two floating bodies is in the form of a traditional welded connection structure, after the platform assembly is completed and the cross braces are removed, it is necessary to carry out carbon planing, grinding and paint repairs on the connection positions. working hours.

Therefore, how to design a strut structure that is easy to disassemble and reduce the processing work of the hull structure at the subsequent connection point to assist in the closing of the upper and lower hulls of the platform has become a key issue for closing the semi-submersible platform without the lower hull of the strut.

Contents of the invention

The technical problem to be solved by the present invention is to provide a cross brace used in the construction of the semi-submersible platform for the problems existing in the closing of the semi-submersible platform without the hull under the cross brace.

In order to solve the above-mentioned technical problems, the strut used in the construction of the semi-submersible platform of the present invention is used to be connected between the port floating body and the starboard floating body of the lower hull without the strut, after the lower hull and an upper hull are closed, the The cross brace can be removed, and the cross brace includes a truss type cross brace body, a first hinge seat and a second hinge seat. The main body of the truss type strut has a first end and a second end, the first end is provided with a first hinged part, and the second end is provided with a second hinged part; A hinge part is hinged; the second hinge seat is used to be arranged on the starboard buoy to be hinged with the second hinge part.

The above-mentioned struts used in the construction of semi-submersible platforms, wherein, the main body of the truss-type struts is composed of a plurality of tubular bodies, and the plurality of tubular bodies include transverse tubular bodies and longitudinal tubular bodies, and the transverse tubular bodies The body is used to connect the floating body on the port side and the floating body on the starboard side, and the longitudinal tubular body is used to connect between two transverse tubular bodies.

The above-mentioned cross brace used in the construction of a semi-submersible platform, wherein the transverse tubular body is integrally connected with the longitudinal tubular body to form a triangular unit space structure.

The above-mentioned cross brace used in the construction of a semi-submersible platform, wherein the transverse tubular body is integrally connected with the longitudinal tubular body to form a quadrilateral unit space structure.

The above-mentioned cross brace used in the construction of a semi-submersible platform, wherein the first hinge part is arranged on the transverse tubular body, including a first connection part, a second connection part and a recess, and the first connection part is provided with A first through hole; a second through hole corresponding to the first through hole is arranged on the second connecting portion; a concave portion is arranged between the first connecting portion and the second connecting portion.

The above-mentioned cross brace used in the construction of a semi-submersible platform, wherein the second hinge part is arranged on the transverse tubular body, including a first connection part, a second connection part and a recess, and the first connection part is provided with A first through hole; a second through hole corresponding to the first through hole is arranged on the second connecting portion; a concave portion is arranged between the first connecting portion and the second connecting portion.

The above-mentioned cross brace used in the construction of a semi-submersible platform, wherein the transverse tubular body is a hollow structure, and a reinforcing member is arranged in the transverse tubular body corresponding to the position of the first hinge.

The above-mentioned cross brace used in the construction of a semi-submersible platform, wherein the transverse tubular body is a hollow structure, and a reinforcing member is arranged in the transverse tubular body corresponding to the position of the second hinge.

The above-mentioned cross brace used in the construction of the semi-submersible platform, wherein the first hinge base is provided with a third through hole corresponding to the first through hole and the second through hole, and a pin shaft passes through The first through hole, the third through hole and the second through hole are used to connect the first hinge seat and the first hinge part.

The above-mentioned cross brace used in the construction of the semi-submersible platform, wherein, the second hinge base is provided with a third through hole corresponding to the first through hole and the second through hole, and a pin shaft passes through The first through hole, the third through hole and the second through hole are used to connect the second hinge seat and the second hinge part.

Further, the present invention also provides a semi-submersible platform construction method, including the step of constructing the upper hull, the step of constructing the lower hull including the port floating body and the starboard floating body, and the step of closing the upper hull and the lower hull. In the step of closing the upper hull and the lower hull, it also includes: connecting the port floating body and the starboard floating body through the above-mentioned cross braces to form an integral lower hull step; transporting the integral lower hull to the dock for closing the upper hull and the lower hull ; And the step of removing the cross brace after closing the upper hull and the lower hull.

The beneficial effect of the present invention is that, through the arrangement of the truss-type cross braces, and the hinged connection of the left and starboard buoys into a whole, the overall launching and floating of the lower hull and the positioning and closing of the upper and lower hulls can be realized conveniently. operation, so that the closing operation during construction of the semi-submersible platform is simple and easy. Moreover, after the closing is completed, the cross brace can be removed only by unhinging, and the eye plate welded on the hull can be permanently retained, thereby effectively avoiding the carbon planing and grinding of the hull connection position, and reducing the construction cost.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

Fig. 1 is a truss-type cross-brace main structure diagram of the cross-brace of the present invention;

Fig. 2 is the structural diagram of the hinged seat of the cross brace of the present invention;

Fig. 3 is the structural view that the cross brace of the present invention is connected between the port buoyant body and the starboard buoyant body;

Fig. 4 is a structural diagram of the hinge part of the main body of the truss type cross brace;

Figure 5 is a partial enlarged view of the connection between the cross brace and the starboard buoy;

Fig. 6 is a cross-sectional view of another embodiment of a truss-style strut body.

Among them, reference signs

100—horizontal brace

110—truss type cross brace main body

111—first end

112—second end

113—first hinge

1131—the first connecting part

11311—first through hole

1132—Second connecting part

11321—Second Through Hole

1133—Concave

114—Second hinge

115—transverse tubular body

116—longitudinal tubular body

117—Reinforcement

118—pin shaft

120—the first hinged seat

121—the third through hole

130—Second hinged seat

210—port buoy

220—starboard buoy

detailed description

The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the appended claims of the present invention.

The cross brace of the present invention is mainly used in the construction of a semi-submersible platform without a cross brace lower hull, and is used to connect between the port floating body and the starboard floating body of the lower hull, so that the left and starboard floating bodies are connected as a whole, so as to be convenient Realize the overall launching and floating of the lower hull and the positioning and closing of the upper and lower hulls.

Referring to FIG. 1 and FIG. 3 , the cross brace 100 of the present invention includes a truss type cross brace main body 110 , a first hinge seat 120 and a second hinge seat 130 . The truss type cross brace main body 110 has a first end 111 and a second end 112 , the first end 111 is provided with a first hinge portion 113 , and the second end 112 is provided with a second hinge portion 114 . The first hinge seat 120 is configured to be disposed on the port buoy 210 to hinge with the first hinge portion 113 . The second hinge seat 130 is configured to be disposed on the starboard buoy 220 to hinge with the second hinge portion 114 .

Referring to FIG. 1 , the truss-type strut main body 110 is composed of a plurality of tubular bodies, the plurality of tubular bodies include a transverse tubular body 115 and a longitudinal tubular body 116 , the transverse tubular body 115 is used to connect the port buoy 210 and the starboard buoy 220 , The longitudinal tubular body 116 is used to connect between two transverse tubular bodies 115 . In the embodiment shown in FIG. 1 , the transverse tubular body 115 is integrally connected with the longitudinal tubular body 116 to form a triangular unit space structure. In actual use, the transverse tubular body 115 and the longitudinal tubular body 116 can also be connected as a whole to form a quadrilateral unit space structure, the cross-sectional view of which is shown in FIG. 6 . Preferably, both the transverse tubular body 115 and the longitudinal tubular body 116 adopt a hollow structure.

Referring to FIG. 4 , the first hinge portion 113 is disposed on the transverse tubular body 115 , specifically, one first hinge portion 113 is disposed on each transverse tubular body 115 . The first hinge part 113 includes a first connecting part 1131, a second connecting part 1132 and a concave part 1133. The first connecting part 1131 is provided with a first through hole 11311, and the second connecting part 1132 is provided with a hole corresponding to the first through hole 11311. Corresponding to the second through hole 11321 , the concave portion 1133 is disposed between the first connecting portion 1131 and the second connecting portion 1132 . In order to improve the articulation ability, the transverse tubular body 115 is provided with a stiffener 117 corresponding to the first articulation position 113 .

The second hinge portion 114 is also disposed on the transverse tubular body 115 , specifically, one second hinge portion 114 is disposed on each transverse tubular body 115 . The second hinged part 114 has the same structure as the first hinged part 113 , which will not be repeated here. Likewise, in order to improve the articulation ability, the transverse tubular body 115 corresponding to the second articulation part position 114 may also be provided with reinforcements.

Referring to FIG. 2 , the first hinge base 120 is provided with a third through hole 121 corresponding to the first through hole 1131 and the second through hole 1132 of the first hinge portion 113 . The second hinged seat 130 has the same structure as the first hinged seat, so it will not be repeated here. Referring to Fig. 5 at the same time, in order to connect the port floating body 210 and the starboard floating body 220 through the cross brace 100 to form an integral lower hull, when connecting the cross brace, a pin 118 is passed through the first through hole of the second hinge part 114 , the second through hole and the third through hole of the second hinge seat 130 connect the second hinge seat 130 and the second hinge part 114; at the same time, pass a pin through the first through hole of the first hinge part 113, the second The second through hole and the third through hole of the first hinge seat 120 connect the first hinge seat 120 with the first hinge part 113 .

Further, the present invention provides a semi-submersible platform construction method, including the step of building the upper hull, the step of building the lower hull including the port floating body and the starboard floating body, and the step of closing the upper hull and the lower hull. In the step of closing the upper hull and the lower hull , which in turn includes:

The step of connecting the port side floating body 210 and the starboard side floating body 220 into one body through the above-mentioned braces to form an integral lower hull;

transporting the integral lower hull to the dock for the upper and lower hull joining steps; and

After closing the upper hull and the lower hull, remove the strut step.

Specifically, in the step of connecting the port side floating body 210 and the starboard side floating body 220 to form an integral lower hull, it is necessary to weld the first hinged seat 120 and the second hinged seat 130 to the port side floating body 210 and the starboard side floating body 220 respectively; In the cross brace step, it is only necessary to release the hinge of the second hinge seat 130 and the second hinge part 114, and release the hinge of the first hinge seat 120 and the first hinge part 113, which are respectively welded on the port side floating body 210 and the starboard side floating body 220. The first articulated seat 120 and the second articulated seat 130 can be permanently reserved, thereby effectively avoiding the carbon planing and grinding work on the connection position of the hull, and reducing the construction cost.

For other detailed steps of closing the upper hull and the lower hull, please refer to the Chinese invention patent application with the application number "201010111292.8", the announcement number "CN102145734A", and the invention title "Integral Closing Method for Semi-submersible Drilling Platform".

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (11)

1. the stull in building for semi-submerged platform, in order to be connected to without between the larboard buoyancy aid of stull lower hull and starboard buoyancy aid, it is characterized in that, after lower hull and a upper hull close up, described stull can be removed, and described stull comprises:

Truss-like stull main body, has first end and the second end, described first end is provided with the first articulated section, and described second end is provided with the second articulated section;

First hinged seat, for being arranged on described larboard buoyancy aid with hinged with described first articulated section; And

Second hinged seat, for being arranged on described starboard buoyancy aid with hinged with described second articulated section.

2. according to claim 1 for the stull in semi-submerged platform construction, it is characterized in that, described truss-like stull main body is made up of many tubular bodies, described many tubular bodies comprise transversal tubular body and longitudinal tubular body, described transversal tubular body is for connecting larboard buoyancy aid and starboard buoyancy aid, and described longitudinal tubular body is used for being connected between two transversal tubular bodies.

3. according to claim 2 for the stull in semi-submerged platform construction, it is characterized in that, described transversal tubular body and described longitudinal tubular body integrated connection triangularity unitary space structure.

4. according to claim 2 for the stull in semi-submerged platform construction, it is characterized in that, described transversal tubular body and described longitudinal tubular body integrated connection quadrangularly unitary space structure.

5. according to claim 3 or 4 for semi-submerged platform build in stull, it is characterized in that, described first articulated section is arranged on described transversal tubular body, comprising:

First connecting portion, is provided with the first through hole;

Second connecting portion, is provided with second through hole corresponding with described first through hole; And

Recess, is arranged between described first connecting portion and described second connecting portion.

6. according to claim 3 or 4 for semi-submerged platform build in stull, it is characterized in that, described second articulated section is arranged on described transversal tubular body, comprising:

First connecting portion, is provided with the first through hole;

Second connecting portion, is provided with second through hole corresponding with described first through hole; And

Recess, is arranged between described first connecting portion and described second connecting portion.

7. the stull in building for semi-submerged platform according to claim 3 or 4, it is characterized in that, described transversal tubular body is hollow structure, corresponds to described first hinge point in described transversal tubular body and installs and be equipped with reinforcement.

8. the stull in building for semi-submerged platform according to claim 3 or 4, it is characterized in that, described transversal tubular body is hollow structure, corresponds to described second hinge point in described transversal tubular body and installs and be equipped with reinforcement.

9. according to claim 5 for the stull in semi-submerged platform construction, it is characterized in that, described first hinged seat is provided with the third through-hole corresponding with described first through hole and described second through hole, a bearing pin passes described first through hole, third through-hole with the second through hole to be connected with described first articulated section by described first hinged seat.

10. according to claim 6 for the stull in semi-submerged platform construction, it is characterized in that, described second hinged seat is provided with the third through-hole corresponding with described first through hole and described second through hole, a bearing pin passes described first through hole, third through-hole with the second through hole to be connected with described second articulated section by described second hinged seat.

11. 1 kinds of semi-submerged platform methods of construction, comprise and build upper hull step, build the lower hull step comprising larboard buoyancy aid and starboard buoyancy aid, and close up upper hull and lower hull step, it is characterized in that, closing up in upper hull and lower hull step, comprising again:

By the stull in claim 1-10 described in any one larboard buoyancy aid and starboard buoyancy aid linked into an integrated entity and form integral type lower hull step;

Integral type lower hull is transported to dock and carries out upper hull and lower hull closes up step; And

Stull step is removed after closing up upper hull and lower hull.