改进的年失效概率法分析  

ANALYSIS OF THE IMPROVED ANNUAL FAILURE PROBABILITY

作　　者：龚景森[1] 何爱德 殷武[1] 

机构地区：[1]广东工业大学土木与交通工程学院,广州510006 [2]贵州省建筑设计研究院,贵阳550002

出　　处：《工业建筑》2012年第7期79-81,共3页Industrial Construction

基　　金：广州市公路局科技项目(穗公研2008-3);广州科技计划项目(2008J1-C201);广东省交通运输厅科技项目(2010-02-16);广东省公路管理局科技项目(粤公研2010-9)联合资助

摘　　要：由于规范对失效概率的取值与实际情况不符,针对年失效概率考虑随时间其结构老化使可靠性降低,且是一个变加速增加的过程,对该过程采用新的线性递增进行模拟,在一定程度上符合客观情况。在桥梁结构设计基准期内,失效概率在结构老化进行阶段每年按10%线性增加,从而推出改进的年失效概率函数。The specification of the failure probability does not match the value with the actual situation. According to the fact that the reliability of a structure would be reduced on its ageing with time, which was taken into accourct in the fuilure probability, and was also an increasing process of changing acceleration, so a new linear increment could be used to simulate this process, which conformed to the objective situation to some extent. In the bridge design reference period, the failure probability in the aging phase would be linearly increased by 10% per year, by which the modified annual failure probability function was proposed.

关 键 词：失效概率 目标可靠度 对比 

分 类 号：U441[建筑科学—桥梁与隧道工程]