摘要
可靠性理论是使建筑工程结构的质量设计由传统的单系数法到概率极限状态设计转换的一种理论依据,文中整理归纳了结构可靠性的基本知识及破坏标准,研究荷载和抗力的概率分布形式以及不确定度表示方式,叙述可靠度计算技术应用于工程结构设计领域的发展现状。构建全过程质量管理中的可靠性保证体系,借助“潜在失效概率”的表述来阐述系统的冗余和质量管理的关系。对可靠度调整、变量取值、不确定度表征及敏感度控制等几种优化方案进行讨论,提出一种基于风险管理的多目标优化方案。
Reliability theory is a theoretical basis for transforming the quality design of building engineering structures from traditional single coefficient method to probabilistic limit state design.This article summarizes the basic knowledge and failure standards of structural reliability,studies the probability distribution forms of loads and resistance,and uncertainty representation methods,and describes the development status of reliability calculation technology applied in the field of engineering structural design.Build a reliability assurance system in the entire process of quality management,and use the expression of"potential failure probability"to explain the relationship between system redundancy and quality management.Discuss several optimization schemes,including reliability adjustment,variable values,uncertainty characterization,and sensitivity control,and propose a multi-objective optimization scheme based on risk management.
作者
胡崎
HU Qi(SCEGC Scientific Research Institute Co.,Ltd.,Xi'an,Shaanxi,710082,China)
关键词
可靠性理论
建筑结构
质量设计
可靠度
reliability theory
building structure
quality design
reliability
