中文摘要：

介绍了畸形波生成的方法并对各种线性合成畸形波的效率进行了对比。选用改进的随机波加瞬态波的方法模拟强非线性波——“新年波”的波形。采用微元法对张力腿平台的立柱和浮筒进行离散，编制程序对张力腿平台在强非线性波作用下的耦合动力响应进行了数值模拟，重点比较分析了张力腿平台在随机波及畸形波中所受波浪力、平台动力响应、系泊系统张力特性及浪向角对平台运动的影响。研究表明：在“新年波”作用下，0°浪向时，平台在x和z方向所受波浪力较随机波增长了约1／4，纵荡、垂荡及纵摇响应值分别增加了33％，38％和12％，张力腿张力幅值增加约20％，位于平台四角的张力腿张力有所差异，相邻两根张力腿的张力差别不大，浪向角对平台运动响应、张力腿张力的影响畸形波大于随机波的作用。为今后考虑强非线性波浪影响时张力腿平台的设计提供了借鉴和参考。

英文摘要：

Some generation models of freak wave are presented. The efficiency of several linear generation models is studied. Wave el- evation of strong nonlinear freak wave--New Year Wave is simulated by improved random wave and transient wave model. Infinitesimal method is applied to divide columns and pontoons into small parts. Coupled dynamic response of TLP is simulated by numerical meth- od. The wave forces, dynamic motion responses and tendon forces of TLP in random wave and freak wave are compared. The influence of wave approach angle on TLP motion is studied. This study shows that ： in New Year Wave condition, the wave force in x and z direc- tions in freak waves increases by about one forth than in random waves. The surge response, heave response and pitch response increa- ses by about 33% , 38% and 12%. The range of tendon force increases by about 20%. The tensions of all tendons are different. The tensions of neighboring tendons are almost the same. The influence of wave approach angle on TLP motion and tendon tension in freak waves is larger than in random waves. This study provides some references and guidance for the design of TLP.