Estimation of Partial Safety Factor using Extended Kalman Filter

Abstract

The safety index and a partial safety factor play an important role in structural reliability design. According to the AFOSM method, when the performance function given as a nonlinear function, the safety index obtained from the mean and standard deviation of the linearized performance function around the failure point. On the other hand, the calculation of the partial safety factor by the first-order Gaussian approximation method interpreted as obtaining the failure point that satisfies the target safety index. In this study, the extended Kalman filter used to estimate the failure point of performance function, and then evaluate the partial safety factor that satisfies the target safety index.