ABSTRACT
Werner et al (1979) have directed toward the second deficiency noted in the foregoing and analyzed a single-span bridge subjected SH-waves. The paper extended to SV-and P-waves, and consists of two main parts. The first part briefly summarizes a new methodology for analyzing the threedimensional dynamic response of soil/structure systems subjected to traveling seismic waves. The second part describes an example application of the methodology to a single-span bridge subjected to incident plane P-and SV-waves. The purpose of this application is to demonstrate basic phenomena associated with the three-dimensional vibrations induced in bridge-type structures by traveling seismic waves. To this end, a simple model of the bridge is studied, and the basic effects of the excitation frequency and the direction of incidence of the incoming wave on the three-dimensional bridge displacements and deformed shapes are presented.
