摘要
讨论了工程结构与系统失效相关性和广义可靠性理论的研究现状,分析了应用研究中凸现的局限性。在此基础上,考虑结构和系统具有"安全-中介-失效"的三级工作模式,提出具有中介状态工程系统的可靠性向量概念;根据地震荷载的单一随机扰动作用特点,引入相关性参数,结合模系运算和条件概率提出较为精确又能简化处理的抗震工程系统失效相关性实用方法;建立同时考虑中介状态和失效相关时多级递阶和网络抗震工程系统的可靠性向量模型及其实用分析方法。该理论适用于土木、建筑、水利、机械等各种工程结构与系统。
The state of study on the failuredependence and generalized reliability theory for engineering structures and systems is discussed. Some limitations of applied researches are analyzed. On the basis of above, the notion is proposed that structures and systems take on three work modes i.e. safety, intermediate and failure states. The concept of reliability vector of engineering structures and systems with intermediate state is brought forward. According to characteristic of structures acted by a stochastically disturbing source of seismic load, a practical method for dealing with failuredependence of aseismic engineering systems is advanced by introducing dependence parameter, rules of norm operation and conditional probability. Some practical analysis methods for reliability vector of multilevel hierarchical and network aseismic engineering systems with intermediate state and failuredependence are established.
出处
《四川大学学报(工程科学版)》
EI
CAS
CSCD
2003年第6期15-19,共5页
Journal of Sichuan University (Engineering Science Edition)
基金
国家自然科学基金项目(50278083)
四川省应用基础研究专项基金项目(01GY051-40)
油气藏地质及开发工程国家重点实验室开放基金项目(PLN0113)
关键词
中介状态
失效相关
广义可靠性
递阶系统
网络系统
可靠性向量
复杂抗震工程系统
intermediate state
failure-dependence
generalized reliability
reliability vector
network aseismic engineering system
multilevel hierarchical aseismic engineering systems