多因素机制作用下在役钢筋混凝土结构构件的可靠度分析  

The Reliability Analysis of Existing RC Member under Multifactor Mechanism Influencing

作　　者：唐义军[1] 李耀庄[1] 蒋春艳[1] 

机构地区：[1]中南大学防灾科学与安全技术研究所,长沙410075

出　　处：《防灾减灾工程学报》2005年第2期135-139,共5页Journal of Disaster Prevention and Mitigation Engineering

基　　金：国家"十五"科技攻关项目(2002BA806B03);国家"十五"科技攻关计划资助项目(2002BA803B04)

摘　　要：钢筋混凝土结构在实际环境中会同时受到多因素机制的作用,由此而导致的钢筋混凝土结构的老化及其修复加固一直是研究人员关注的热点问题。由于影响因素的复杂性,这些问题至今没有得到很好的解决。为此分析了最常见的几种因素作用的机制。考虑了各因素机制作用之间的相关性对结构构件可靠度的影响,用系统可靠度方法分析了多因素机制作用下钢筋混凝土结构构件的可靠度并给出了算例。该分析方法计算简便,为在役钢筋混凝土结构的安全评估和修复加固提供了一种计算可靠度的参考方法。The RC structure receives the influence of the multifactor mechanism at the same time in the real environment, and the aging caused by it as well as the strengthening are the hot problems that researchers pay close attention to at all times. However, because of the complexity of these problems, they have not got very good settlement until now. The mechanisms of the influence for several kinds of the most common factors are analyzed deeply in this paper. Considering the correlation of the multifactor mechanism influences, the reliability of RC member is investigated using the system reliability method and an example is given for illustrating. The method is simple and convenient, and a reference method of calculating the reliability for the safety assessment and strengthening of the existing RC structure can be provided.

关 键 词：机制 构件 相关性 可靠度 

分 类 号：TU311.2[建筑科学—结构工程]