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Offshore platform, connecting bracket and its design method

A technology of offshore platform and design method, applied in the direction of ship construction, ship, ship parts, etc., can solve the problem of large thickness, achieve the effect of improving yield strength and buckling strength, reducing platform weight, and alleviating fatigue strength problems

Active Publication Date: 2018-11-20
YANTAI RAFFLES SHIPYARD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a connecting bracket to solve the technical problem that the existing connecting structure has a large thickness caused by improving the stress concentration phenomenon

Method used

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  • Offshore platform, connecting bracket and its design method
  • Offshore platform, connecting bracket and its design method
  • Offshore platform, connecting bracket and its design method

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Embodiment approach

[0053] An embodiment of the ocean platform proposed by the present invention. In this embodiment, taking a semi-submersible offshore platform as an example, the offshore platform mainly includes a deck box 1 , a column 3 and a connecting bracket 2 , wherein the connecting bracket 2 is connected between the column 3 and the deck box 1 .

[0054] Implementation of design method for connecting brackets

[0055] An embodiment of the design method of the connecting bracket proposed by the present invention. In this embodiment, the design method is used to design a connecting bracket 2 connected between the deck box 1 and the column 3 of, for example, an ultra-deep water semi-submersible platform. The connecting bracket 2 is surrounded by a first side 21 fixed to the deck box 1 , a second side 22 fixed to the column 3 and an arc-shaped side, and the first side 21 and the second side 22 are vertically connected. In this embodiment, the design method of the connecting bracket mainly...

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Abstract

The invention provides an ocean platform, a connecting bracket plate, and a design method of the connecting bracket plate. The connecting bracket plate is connected between a stand column of the ocean platform and a deck box, and is formed by the enclosing of a first edge fixed to the deck box, a second edge fixed to the stand column, and an arc-shaped edge, wherein the first edge is perpendicularly connected with the second edge, and the length of the first edge is greater than that of the second edge; the arc-shaped edge comprises a first arc-shaped section and a second arc-shaped section; the first arc-shaped section is provided with a first end and a second end, and the first end is connected to the second edge; the radius of a circle corresponding to the first arc-shaped section is greater than the length of the second edge, and the tangent of the first arc-shaped section, at an intersection point of the first arc-shaped section and the second edge, is arranged to be oblique with the second edge; the second arc-shaped section is provided with a first end and a second end, the first end is connected to the first edge, and the second end is connected to the second end of the first arc-shaped section; and the radius of a circle corresponding to the first arc-shaped section is greater than or equal to the length of the second arc-shaped section.

Description

technical field [0001] The invention relates to a connection structure of an offshore semi-submersible platform, in particular to an ocean platform, a connection bracket and a design method thereof. Background technique [0002] The existing semi-submersible platform mainly includes a buoy, a column fixed above the buoy, and a deck box fixed above the column. Because this semi-submersible platform has better motion performance and the variable load on the deck of the buoy is relatively large, it is widely used in drilling and exploitation projects of offshore oil and gas resources. [0003] At present, in existing semi-submersible platforms, the columns are usually directly welded to the deck box. This connection method will cause serious stress concentration at the connection node between the column and the pontoon or deck box, and at the same time cause fatigue failure at the connection node between the column and the pontoon or deck box, which in turn will cause the conn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B35/44B63B17/00
Inventor 李德江李磊孙立强张国栋符洋傅强郭勤静李浩杰王洪庆
Owner YANTAI RAFFLES SHIPYARD
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