中文摘要：

立管是连接海底钻井和海上平台的重要系统.涡激振动是造成立管疲劳损伤的主要因素.受海流的随机作用,立管涡激振动表现出不确定性,对这种随机振动进行快速有效地分析,对于立管的工程设计具有非常重要的意义.考虑随机激励作用,要比确定性激励困难得多,虚拟激励法对于克服这种困难具有很好的效果.近年来,应用虚拟激励法分析立管的涡激损伤问题,取得一些成果,该文对此作一概略的叙述.

英文摘要：

The marine riser is an important part connecting the undersea drilling and the off- shore platform. The primary factor causing the fatigue damage of marine risers is the vortex-induced vibration. Due to the random effects of ocean currents, the vortex-induced vibration of the riser is uncertain. Quick and reliable analysis of such random vibration is of great importance for the engineering design of the riser. Compared with the deterministic excitation, the random excitation is much more difficult to analyze, and the pseudo-excitation method is an efficient tool for this problem. In recent years, the pseudo-excitation method was applied and exended by the author and his collaborators for the analysis of vortex-induced vibration of marine risers, and many achievements were made, which were briefly summarized.