Abstract
The present study focuses on input loss of deeply embedded foundations that support bridges and viaducts. It is predicted that slippage and separation occur at the interface between soil and the sidewall of the foundations when subjected to strong motions. Therefore, it is desirable to know the effect of slippage and separation on the input loss. This study investigates the above effect by means of analytical approach based on a three-dimensional wave propagation theory, including the influence of inertial interaction due to the mass of foundation and superstructure upon the interface. The present study gives physical understanding of the effect of slippage and separation on the input loss.
