海洋平台冰力反应谱数值算法的研究

ON NUMERICAL ALGORITHM OF ICE FORCE RESPONSE SPECTRUM FOR OFFSHORE PLATFORMS

本文提出了冰力反应谱的概念,并推导出冰力反应谱数值计算单步法和两步法的解析递推格式,文中给出了一条冰压力时间过程的加速度反应谱计算结果,文末对标准冰力反应谱的标定及其在海洋平台抗冰设计中的应用等问题进行了初步的探讨。

In this paper ica force response spectrum is defined and the numerical algorithm for computing the spectrum is derived, which has the analytial recursion scheme for the single and two step methods. Based on the algorithm, An acceleration response spectrum of one ice force time history is computed. In the end of the pape-r, the problem of scaling the. standard ice force response spectrum and its application in the ice force resistance design of the offshopre platforms is preliminarily discussed.