Abstract
The objective of this study is to establish a method to evaluate the risk associated with the failure and damage based on the deformation of embanked structure such as a road embankmet etc. At first, a method is proposed to evaluate the fragility curve by considering the uncertainty of the seismic response and the soil properties simply. Two limit states are defined based on the deformation of a sliding block. This method is applied to evaluate the effect of the uncertainty of seismic action and the spatial distribution of soil strength on the fragility curve is made clear. It is obtained that the seismic action have a larger effect as the uncertainty and that the factors affected each fragility curves are different from each other.
