海洋导管架平台随机响应混合分析方法  

Hybrid method for stochastic response analysis of offshore platform structures

作　　者：金伟良[1] 郑忠双[1] 邹道勤[1] 李海波[1] 

机构地区：[1]浙江大学土木工程学系,浙江杭州310027

出　　处：《海洋工程》2001年第1期14-18,37,共6页The Ocean Engineering

基　　金：国家自然科学基金资助项目! (5 980 5 410 ;5 97790 0 2 )

摘　　要：采用将结构的解析分析和数值求解方法相结合的固定式海洋平台随机响应混合求解方法 ,考虑波浪 -结构相互作用和基于最小二乘法原理的非线性曳力的影响。采取两个步骤 ,第一步进行与结构有关的特征值分析 ;第二步基于谱方程进行响应估计 。WT5”BZ]A hybrid solution combined with analytical and numerical methods is proposed to compute the stochastic response of the fixed offshore platforms to random wave, taking into account of wave-structure interaction and non-linear drag force on the basis of a least-squares procedure. The program is developed using two steps: the first is eigenanalysis, which is related to the structure, and the second is response estimation based on spectral equations. The numerical analysis is carried out for both linear and non-linear platform motions.

关 键 词：海水平台 随机响应 非线性曳力 波浪-结构相互作用 最小二乘法 谱方程 

分 类 号：P752[天文地球—海洋科学]