连续刚构桥体系可靠度分析的塑性极限荷载-QR法

摘要

提出了连续刚构桥体系可靠度分析的塑性极限荷载QR法,它是以结构塑性极限分析理论及样条离散化为基础,只寻找塑性极限荷载,避开了寻找结构体系失效模式的困难及缺陷,简化了失效概率的计算工作.此方法可以考虑非线性的影响.%Plastic limit load-QR method for system reliability analysis of continous frame bridge is presented.This method is based on theory for plastic limit analysis of structures and spline partitions. This method only seek the plastic limit load ,it overcomes the difficulties and defects to find collapse mechanism, also simplifies the consideration of collapse probability, and nonlinear effects can be considered 。