Large-scale offshore platform integral type conduit frame structure suitable for installation in deep water sea area by floating and supporting method and installation method thereof

Abstract

The invention provides a large-scale offshore platform integral type conduit frame structure suitable for installation in a deep sea area by a floating and supporting method and an installation methodthereof. The integral type conduit frame structure is formed by connecting a main conduit, a steel pipe pile, a cross brace and an inclined brace into a whole. The upper part of the integral type conduit frame is a floating and supporting method ship inlet area, and the lower part of the integral type conduit frame is a conduit frame communication area. The main conduits of the integral conduit frame are arranged on the two wings in the longitudinal direction of the platform, and a certain hollow area is reserved in the middle of the main conduit at the inner side so as to ensure the entry and exit of the barge when the floating and supporting method is used for installation. The lower communication area is a multi-layer truss structure, and the main conduits at the two sides are connected into a whole through the truss structure. The large-scale offshore platform integral type conduit frame structure suitable for installation in deep water sea area by floating and supporting method and the installation method thereof are not only suitable for installing the offshore platform by the floating and supporting method in the deep water area, but also meet the structural integrity requirement of the conduit frame in the deep water area, and can bear the vertical force transmitted by an upper electric platform and the horizontal force caused by the environmental load. The integral type conduit frame structure and the installation method thereof are also suitable for large-scale ocean platform structures arranged in other deep water sea areas.

Description

technical field [0001] The invention belongs to the field of offshore wind power generation, and in particular relates to an integral jacket structure and an installation method for a large offshore platform suitable for installation by float-over methods in deep water sea areas. 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

For small offshore electrical platforms, the traditional method is to arrange an integral jacket directly under the center of the platform; but for large offshore electrical platforms with a capacity of 10,000 tons, the above-mentioned basic type will cause the cantilever structure of the two wings of the platform to be too long, on the one hand, it will restrict the two wings of the electrical platform. On the other hand, the problem of "top-heavy" in the overall structure of the electrical platform will be highlighted, and the unreasonable force on the structure will lead to significant dynamic effects on the upper platform, threatening the long-term safe and stable operation of the platform

In addition, the traditional integral jacket foundation cannot be installed on large offshore electrical platforms using the float-over method

Images