Jacket Assembly Guide for Offshore Wind Turbines
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Solution Overview
Problem
The existing methods for assembling jacket structures for offshore wind turbines are time-consuming and costly, requiring manual manipulation of heavy components and posing safety risks due to the modular assembly process.
Innovation Solution
A jacket assembly guide that uses supporting towers to hold legs in place and clamps to secure them, allowing braces to be suspended and connected efficiently, enabling the assembly of a jacket structure in one piece with improved safety and reduced costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If modular assembly is used to construct the jacket structure, then the structure can be assembled in stages, but the assembly process becomes time-consuming and costly
Solution Approach 1:
The jacket structure is divided into modular components (legs, braces, node elements) that can be manufactured separately and assembled in stages. Each leg is supported by a supporting tower at its final position, and braces are connected between node elements on different legs, allowing systematic assembly while maintaining productivity
Solution Approach 2:
The supporting towers are erected beforehand at the locations where legs will be positioned. This preliminary setup enables legs to be placed directly into their final positions and securely held by clamps, eliminating the need for complex positioning operations during assembly and significantly reducing assembly time
2Ease of manufacture
If workers manually manipulate heavy leg segments and braces during assembly, then the structure can be assembled, but worker safety is compromised
Solution Approach 1:
Supporting towers serve as intermediary structures that bear the weight of legs during assembly. The towers are equipped with clamps that securely hold legs in position, eliminating the need for workers to manually support or position heavy components. Cranes lift components into position while the supporting tower structure provides stable support, greatly reducing manual handling and associated safety risks
3Force
If traditional crane-based lifting is used for each module, then heavy components can be positioned, but assembly time increases
Solution Approach 1:
Multiple lifting operations are merged into a single coordinated process. The supporting towers provide a stable framework that allows multiple legs to be positioned and secured simultaneously or in rapid sequence. Braces are connected between node elements while legs are held in place by the supporting towers, enabling parallel assembly operations that reduce total assembly time compared to sequential module-by-module assembly
Data Source
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AI summary
The invention describes a jacket assembly guide (5) for assembling a jacket structure (1), which jacket structure (1) comprises a plurality of legs (10, 100), a plurality of connecting braces (11) and a plurality of node elements (20A, 20B, 20C, 20D, 20E) arranged on the legs (10, 100) for connecting the braces (11) to the legs (10, 100), which assembly guide (5) comprises a number of supporting towers (51) for supporting the plurality of legs (10, 100) such that a supported leg (10, 100) is held in a position corresponding to the position of that leg (10, 100) in the assembled state of the jacket structure (1); and a number of connecting means (56) for releasably connecting a leg (10, 100) to a supporting tower (51). The invention also describes a method of assembling a jacket structure, and a jacket structure (1), in particular a jacket structure (1) for supporting an offshore wind turbine (4).