Study on shaking table model tests of seismic residual deformation and failure for Lianghekou high rock-fill dam

Shaking table model test is the major technique to study the seismic responses of a high rock-fill dam because of the shortage in actual earthquake measurement data and the limitation of other test techniques.In this work,a large-scale model was tested to analyze the seismic residual deformation and dynamic failure mode of a high rock-fill dam under the conditions of extremely strong earthquake,and some responses of the prototype dam were predicted.The test results show that the core rock-fill dam has relatively smaller residual deformation and that the major failure patterns are featured by rocks rolling and surface-layer sliding on the dam slopes near the river channel.Multi-dimensional earthquake is an unfavorable factor to the control of residual deformation and dynamic stability.This study suggests that the protection of dam top area should be strengthened in anti-seismic design of rock-fill dam.