用响应面有限元法分析既有混凝土桥梁的可靠性  

Reliability Assessment of an Exiting Concrete Bridge Based on Response Surface Method

作　　者：陈建英[1] 郭艳梅[2] 贺国京[1] 

机构地区：[1]中南林业科技大学土木建筑与力学学院,湖南长沙410004 [2]湖南工程职业技术学院,湖南长沙410151

出　　处：《中南林业科技大学学报》2008年第5期123-126,135,共5页Journal of Central South University of Forestry & Technology

基　　金：中南林业科技大学引进高层次人才科研启动基金资助项目(项目编号:101-0602)

摘　　要：基于响应面有限元的可靠度计算是采用有限元数值模拟来解决功能函数不能明确表示的结构可靠度计算问题的一类方法,对于大型复杂结构的可靠度分析有重要的意义.基于ANSYS的响应面法分析了一座既有桥梁的可靠性.数值模拟与试验结果对比表明,该方法可以很好地评价既有混凝土桥梁的可靠性,为结构可靠度分析计算提供了新的有效途径.To assess an existing concrete bridge, it is necessary to calculate the reliability of its large and complicated structures. By employing the FEM numerical simulation to solve the reliability problem which the closed-formed performance function cannot do, this paper puts forward a response surface method based on ANSYS and with it conducts the reliability calculation for the bridge. The results of the numerical simulation, contrasted with the experiment phenomenon, indicate that this method can evaluate the reliability of an existing bridge effectively, thus providing a new effective way to reliability calculation.

关 键 词：桥梁工程 混凝土桥梁 可靠度 响应面有限元 

分 类 号：U448.33[建筑科学—桥梁与隧道工程] U441[交通运输工程—道路与铁道工程]