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| Safety Assessment for Fatigue Life of Floating Platform Mooring |
| WANG Jia-ying,ZHANG Shi-lian，XU Wei,WANG Wen-ming |
| (State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200030, China) |
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Abstract Based on Miner fatigue damage theory, after the calculation of the statistical amplitude of mooring tension induced by lowfrequency and wavefrequency wave and the damaged mooring breaking strength, the safety assessment for the fatigue life of a semisubmersible platform’s mooring system in extended service was finished. The research result indicates that secondorder resonant motion is the main ingredient that induces the mooring fatigue damage and the damaged mooring breaking strength has a great impact on mooring fatigue safety life. The assessment method of mooring fatigue life in this paper is applicable in similar assessment for other floating platform mooring in extended service.
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Received: 03 November 2007
Published: 28 November 2008
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Corresponding Authors:
ZHANG Shi-lian
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