摘要
深水固定式桩基导管架平台在随机海浪的作用下,由于其结构自振频率处在遭遇的波浪频率范围内,平台的动力响应会在构件中引起很大的应力放大。在长期较大的交变应力作用下,导管架管节点热点处会产生疲劳,疲劳破坏是该类平台结构破坏的主要形式。因此对深水导管架平台进行动力疲劳分析是必不可少的。
A practical method for dynamic fatigue analysis is put forward, ie, the combined time/frequency domain analysis model synthesis. On the basis of wave distribution, weighted average is employed to synthesize wave spectrums and simulate wave time history, calculate the combined loads of wave and current. Solution of the motion, determination of stress time history and spectrums of tubular joints, and estimation of fatigue life of the structure are all mentioned.
出处
《中国海洋平台》
1991年第2期21-24,4,共5页
China offshore Platform
