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

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.