RANDOM WAVE-THEORY ANALYSIS OF LAYERED SOIL SITES UNDER P-AND SV-WAVE EXCITATIONS

A random wave-theory analysis method is developed for the random seismic response analysis of layered soil sites under the P-and SV-wave excitations.In this method,the random vibration analysis method is combined with wave theory to solve the wave equation and to obtain the seismic responses of the layered soil sites.The effects of incident angle of wave and elastic rock on the seismic responses of layered soil sites are considered precisely and conveniently.The influences of angle of incidence of P- and SV- wave,depth of layered soil,ratio of shear-wave velocities between rock and soil on the seismic responses of homogeneous soil layer on half-space are discussed through numerical results of several examples.