Large offshore platform split-type conduit frame structure suitable for shallow-water marine float-over mounting, and mounting method thereof

Abstract

The invention provides a large offshore platform split-type conduit frame structure suitable for shallow-water marine float-over mounting, and a mounting method thereof. The split-type conduit frame structure is provided with two split conduit frames which are arranged in the longitudinal direction of a platform, and a certain hollow area is reserved between the two split conduit frames to serve as a float-over ship entering area; the conduit frames are connected into a whole by inner side main conduits, outer side main conduits, steel pipe piles, transverse struts and inclined struts, and thesteel pipe piles are arranged in the inner side main conduits and the outer side main conduits; each split conduit frame transversely adopts a structure with multiple rows of piles and multiple trusses of conduit frame bodies, the steel pipe piles in the inner side main conduits adopt vertical piles, and the steel pipe piles in the outer side main conduits adopt inclined piles; and the main conduits in the two conduit frames are in positioning fit at the bottom through a positioning frame. The large offshore platform split-type conduit frame structure is structurally safe and reliable, convenient and precise in construction and can be used for shallow-water marine float-over mounting of the large offshore platform.

Description

technical field [0001] The invention belongs to the field of offshore wind power generation, and in particular relates to a large-scale offshore platform split-type jacket structure and an installation method suitable for installation in shallow sea areas by the float-over method. Background technique [0002] As a clean and renewable energy, wind energy has the advantages of huge content, good environmental benefits, short infrastructure construction period, flexible installation scale, etc., and has attracted more and more attention from all over the world. my country is rich in wind energy resources, especially offshore wind power has the advantages of large resource reserves, high wind speed, low turbulence, low environmental noise pollution, short infrastructure construction period, and does not occupy arable land, and has become the focus of wind power development in recent years. [0003] The offshore electrical platform is the current gathering center of the offshore...

AI Technical Summary

Problems solved by technology

The traditional method of arranging the integral jacket just below the center of the platform will result in the cantilever structure of the two wings of the platform being too long. On the one hand, it will restrict the equipment layout scheme on the two wings of the upper module, and on the other hand, it will lead to the "top-heavy" problem of the overall structure of the electrical platform. , unreasonable structural forces lead to significant dynamic effects on the upper platform, threatening the long-term safe and stable operation of the platform

In addition, for large offshore electrical platforms, the traditional hoisting solution using large cranes will be limited by the lifting equipment and the water depth of the wind field.

Images