Cable-stayed Bridge Seismic Fragility Analysis based on ANN-ODM-MC Method

Abstract:

In ANN-ODM-MC method, computation work is dramatically decreased by means of ANN(Artificial Neural Network) while analyzing the randomness of structure capacity. The structure demand probability distribution is obtained by using IDA method. Based on the probability distribution of structure capacity and demand, the failure probability under each PGA is calculated through Monte- Carlo sampling method. And the fragility curves are drawn out. Analysis results indicate that computation work is dramatically decreased by using ANN to simulate the capacity distribution; the seismic fragility of cable-stayed bridge increased while the randomness of structural capacity is considered.