Application of Endurance Time Method in the Seismic Responses Analysis of Free-Field Site

The Endurance Time Method is a promising seismic analysis technique due to its gradual increase in seismic excitation amplitude over time. It involves the prediction of a structure’s gradual transition from an elastic state to a nonlinear damage state during a single time-history calculation. The application of Endurance Time Method in soil-structure problems can significantly reduce computing time. In this paper, the Endurance Time Method is applied on the seismic prediction of free-field site. The results of Endurance Time Method are compared with that of incremental dynamic analysis. For the problem in this paper, Endurance Time Method is well applied in the seismic responses analysis of free-field site, particularly when the induced seismic intensity is small.