Seismic input model of high slope and its test verification

The Seismic input model of high slope is proposed, in which the Lagrangian discontinuous deformation analysis (LDDA) is adopted to simulate faults, cracks and structural surfaces, and the viscoelastic boundary is used as the energy absorbing boundary to reflect the influence of infinite foundation radiation damping. Due to employing the wave analysis method, the propagation and amplification effect of seismic waves in the slope can also be included. In order to verify the rationality of this calculated model, a slope dynamic model test of a large earthquake simulation shaking table was also carried out. From the results of experiment and numerical calculation, it can be seen that the acceleration of seismic response and its amplification effect, the slope base frequency and the opening degree of the simulated faults are comparable. The calculation model presented in this paper provides a good tool for correctly evaluating the seismic stability of the high slope near dam. (paper)