Study on Post-service Jacket Platform Residual Life Reliability Prediction Method

Abstract

Abstract: To ensure the post-service platform security in the late service period, it is necessary to predict platform structure residual life reliability. This paper focuses on platform global time-varying reliability resulting from component dynamic failure and fatigue failure under random wave loads. Firstly component fatigue reliability and dynamic reliability were calculated according to Miner linear cumulative damage theory and first crossing failure criteria, components with larger failure probability were searched and deleted. Then the wave incremental dynamic analysis was used to find the limiting wave height which the platform could bear. Finally combining with the wave statistics, platform global structure time-varying reliability was calculated to predict the residual life. The example shows the practicality and simplicity of the proposed method.

Key words: offshore platform, residual life reliability, random wave, wave incremental dynamic analysis

CLC Number:

U 661.4

LIU Yong-1, CHEN Lu-Yun-1, HOU Guo-Hua-2. Study on Post-service Jacket Platform Residual Life Reliability Prediction Method[J]. Journal of Shanghai Jiaotong University, 2013, 47(02): 274-277.

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