影响张力腿平台（TLP）张力腿疲劳寿命的一个主要根源就是海流引起的涡激振动（VIV），因此合理准确的涡激振动疲劳分析对张力腿疲劳寿命的预测具有重要的意义。首先对张力腿涡激振动响应的数学模型和应力-寿命（S-N）曲线方法进行了理论论述，随后给出了采用Flexcom和SHEAR7软件进行张力腿涡激振动疲劳分析的分析流程，最后针对某TLP在位期间海流导致的张力腿涡激振动疲劳进行了算例分析。
The vortex-induced vibration (VIV) caused by current directly affects the fatigue of tendon of tension leg platform (TLP). Proper VIV fatigue analysis is very important for tendon fatigue life prediction. Firstly, the mathematical model for tendon VIV and stress-life (S-N) curve method are studied. Secondly, for tendons under TLP in-place condition, the procedure of VIV fatigue analysis using Flexcom and SHEAR7 is presented. Finally, detailed VIV fatigue analysis is performed for a specified TLP.
1 鲍莹斌,李润培,顾永宁.张力腿平台系索响应研究［J］.中国造船,2000,41(3)： 40.
Bao Ying-bin, Li Run-pei, Gu Yong-ning. Response analysis of TLP tendons ［J］. Shipbuilding of China， 2000,41(3)： 40.
2 曾晓辉,沈晓鹏,吴应湘.张力腿平台拉索的疲劳损伤［J］.船舶工程,2006,28(3)： 18.
Zeng Xiao-hui, Shen Xiao-peng, Wu Ying-xiang. Fatigue damage of the tether of tension leg platform ［J］. Ship Engineering， 2006,28(3)： 18.
3 Kjerengtren L, Wirsching P H. Structural reliability analysis of series systems ［J］. Journal of Structural Engineering， 1984,110(7)： 495.
4 胡毓仁,陈伯真.船舶及海洋工程结构疲劳可靠性分析［M］.北京： 人民交通出版社,1996.
Hu Yu-ren, Chen Bo-zhen. Fatigue reliability analysis of ship and offshore structure ［M］. Beijing： China Communications Press， 1996.
5 董艳秋.深海采油平台波浪载荷及响应［M］.天津： 天津大学出版社,2005.
Dong Yan-qiu. Wave loads and response of the oilextraction platform in deep ocean ［M］. Tianjin： Tianjin University Press， 2005.
6 董艳秋.波、流联合作用下海洋平台张力腿的涡激非线性振动［J］.海洋学报,1994,16(3)： 121.
Dong Yan-qiu. Vortex shedding non-linear vibration of ocean platform tendon under wave and current ［J］. Acta Oceanologica Sinica， 1994,16(3)： 121.
7 Gadagi M M, Benaroya H. Dynamic response of an axially loaded tendon of a tension leg platform ［J］. Journal of Sound and Vibration， 2006,293： 38.
8 Vickcry B J, Watkins R D. Flow induced vibration of cylindrical structures ［C］. Proceedings of the First Australian Conference， 1962： 213.
9 余建星,张中华.波、流联合作用下张力腿平台系索系统疲劳可靠性分析方法研究［J］.海洋技术,2009,28(2)： 69.
Yu Jian-xing, Zhang Zhong-hua. Research on fatigue reliability of tension leg platform tendon system under wave and current ［J］. Ocean Technology， 2009,28(2)： 69.
10 American Welding Society (AWS) D1 Committee on Structural Welding. AWS D1.1/D1.1M： 2015. Structural welding code specification-steel ［S］. 2015.
