论文部分内容阅读
提出将响应面方法和非线性有限元分析结合起来对桥梁上部结构的体系可靠度进行分析的新方法.首先,在试验设计的基础上应用通用的非线性有限元分析程序对桥梁结构进行体系承载力极限分析,然后,利用响应面方法推求桥梁结构体系承载力的响应面,最后利用可靠度分析程序计算桥梁结构的体系可靠度指标和失效概率.通过对一单跨叠合桥梁进行算例分析,证明了所建议方法的有效性.
A new method of combining the response surface method and nonlinear finite element analysis to analyze the system reliability of the superstructure of the bridge is proposed.Firstly, based on the experimental design, a general non-linear finite element analysis program is used to load the bridge structure Then, the response surface method is used to calculate the response surface of the bearing capacity of the bridge structural system, and finally the reliability index and the failure probability of the bridge structure are calculated by using the reliability analysis program.Through the example analysis of a single span bridge, , Proved the effectiveness of the proposed method.