Abstract:

Selection of proper seismic input is important for seismic response analysis of hydraulic structures. Analytical formulae are derived herein for calculation of equivalent loadings for 2-D plane P waves and plane waves via viscous-spring boundary on the basis of previous studies and the theories of wave motion. They can be applied to an artificial boundary and model the effects of obliquely incident seismic waves. The results of numerical examples show that this method has a high accuracy for P waves or waves and can be useful for computation of structure-foundation interaction under obliquely incidences of waves.