海洋平台在组合载荷作用下的随机域可靠性分析  

Random Field Method in Reliability Analysis of Offshore Platform Under Combined Loads

作　　者：郭军[1] 朱静[1] 肖熙[1] 

机构地区：[1]上海交通大学船舶及海洋工程系,200030

出　　处：《强度与环境》1995年第2期1-7,共7页Structure & Environment Engineering

摘　　要：本文对海洋平台在风、浪及海流等多种载荷组合作用下的可靠性进行了分析计算，采用优选随机域单元法进行结构参数的随机域离散。文中的海洋平台算例结果表明了优选随机域单元法的高效性，以及在海洋工程结构系统可靠性计算中考虑载荷组合作用的必要性。In this paper, random field method is applied to analysis the reliability of offshore platform which is subject to combined loads of wind, wave and current. Random field of structure uncertainties is discretized to random field meshes in reliabi1ity analysis. Optimal discretization is performed according to the gradient of the limit state function. Numerical examples of a offshore platform are carried out to show the efficency of the optimal discretization method, and to show the necessary of considering combined loads model in system reliability analysis of offshore structures.

关 键 词：海洋平台 结构可靠性 组合载荷 随机载荷 

分 类 号：P715.41[天文地球—海洋科学]