Remaining fatigue life assessment of aging fixed steel offshore jacket platforms
Remaining fatigue life assessment of aging fixed steel offshore jacket platforms
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DOI：
10.1080/15732479.2015.1009122
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发表时间：
2016-02
影响因子：
3.7
通讯作者：
M. Zeinoddini;P. Ranjbar;H. Khalili;A. Ranaei;Hamid Golpour;J. Fakheri
中科院分区：
文献类型：
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作者：
M. Zeinoddini;P. Ranjbar;H. Khalili;A. Ranaei;Hamid Golpour;J. Fakheri
现有海上平台的实际疲劳寿命通常会偏离其设计者的预期，因为老化平台通常会经历一些退化、机械损伤、维修和修改，并且会遇到延长使用寿命的需求。当前的多学科论文侧重于老化海上平台剩余疲劳寿命评估的不同方面。在案例研究过程中，介绍了用于长期波浪气候学定量估计的后推技术，用于评估在其行驶和现场服务过程中积累的桩疲劳损伤的平台基础岩土/结构建模方法，以及用于焊接结构节点疲劳损伤的频谱疲劳建模和分析的概要。在现有海上结构的疲劳寿命评估方面，现有规范的潜在局限性得到了强调。讨论了疲劳寿命评估的可靠性、可能的补救措施和一些疲劳完整性监测技术。
Actual fatigue life of an existing offshore platform typically deviates from that intended by its designer because aging platforms commonly experience some degradations, mechanical damages, repairs and modifications, and come across demands for the service extension. The current multidisciplinary paper focuses on different aspects of the remaining fatigue life assessment of an aging offshore platform. In the course of a case study, it describes a hindcasting technique for quantitative estimation of the long-term wave climatology, methods for geotechnical/structural modelling of the platform foundation to evaluate the piles fatigue damages accumulated during their driving and in-place service and the outlines for a spectral fatigue modelling and analysis of the fatigue damages to welded structural joints. Potential limitations in the available codes of practice, regarding the fatigue life assessment of existing offshore structures, are highlighted. The reliability of the fatigue life evaluations, possible remedy measures and some fatigue integrity monitoring techniques are discussed.