海洋结构疲劳损伤评估方法综述  

Review on Fatigue Damage Evaluation Methods for Offshore Structures

作　　者：吕国儿 王康杰 田俊生[3] 赵悦 LYU Guoer;WANG Kangjie;TIAN Junsheng;ZHAO Yue(Power China Huadong Engineering Corporation Limited,Hangzhou 311122,China;Key Laboratory of Far-Shore Wind Power Technology of Zhejiang Province,Hangzhou 311122,China;Sichuan Datang International Ganzi Hydropower Development Corporation Limited,Ganzi 626001,China)

机构地区：[1]中国电建集团华东勘测设计研究院有限公司,浙江杭州311122 [2]浙江深远海风电技术研究重点实验室,浙江杭州311122 [3]四川大唐国际甘孜水电开发有限公司,四川甘孜626001

出　　处：《海洋技术学报》2025年第2期64-74,共11页Journal of Ocean Technology

基　　金：中国电建集团华东勘测设计研究院有限公司科技项目(KY2021-XNY-02-08)。

摘　　要：随着海洋工程的快速发展,结构长期疲劳特性已经成为影响海洋结构运行安全的热点问题,在复杂环境载荷影响下,针对不同型式、不同功能的海洋结构选择适宜且有效的疲劳分析方法仍然是学术界的难题。因此,本文综述了有关海洋工程结构的疲劳损伤及其寿命的评估方法,分析了风、浪等作用在海上结构的外界环境载荷的计算原理,包括这些随机载荷处理方法。随后对基于应力寿命曲线(S-N曲线)和裂纹扩展的疲劳分析方法进行了详细的综述,包括线性及非线性损伤累积理论。最后结合工程实例,介绍整个疲劳损伤评估流程。通过这些理论综述及工程实例介绍,为以后海洋工程领域的疲劳分析方法的选取提供参考,可以更好地理解疲劳评估方法在海洋工程领域的应用价值,并进一步探讨如何通过疲劳评估提高海洋结构的安全性和可靠性。With the rapid advancement of offshore engineering,the long-term fatigue characteristics of structures have become a critical issue affecting the safe operation of ocean structures.Selecting appropriate and effective fatigue analysis methods for various types and functionalities of offshore structures under the influence of complex environmental loads remains a challenging issue in the academic realm.Therefore,this study reviews the evaluation methods for fatigue damage of offshore structures including the calculation principles of external environmental loads such as wind and waves acting on offshore structures,random load processing methods.Subsequently,a review of fatigue analysis methods based on S-N curves and crack propagation is provided,including linear and nonlinear damage accumulation theories.Finally,the entire fatigue damage evaluation process is demonstrated through engineering examples.This study provides a valuable reference for selecting fatigue analysis methods in the ocean engineering field,enhances the understanding of the practical value of fatigue evaluation methods in ocean engineering,and facilitates further exploration of how to improve the safety and reliability of ocean structures through fatigue evaluation.

关 键 词：海洋工程结构 环境载荷 疲劳损伤评估 S-N曲线 断裂力学元 

分 类 号：P751[交通运输工程—港口、海岸及近海工程] TU473.1[天文地球—海洋科学]