In this paper

propagation characteristics of seismic wave field

dynamic evolution and failure mechanism of a rock slope with connective structural surface were studied. Based on the engineering background of the bank slope of Jinsha River Bridge

FEM analysis and a shaking table test were designed and completed. According to the results of FEM analysis

the connective structural surface caused significant change of the earthquake wave field. After multiple superposition of seismic wave of slope surface and connective structural surface

the PGA of the slope was 1.8 times of the PGA of a homogeneous slope. With the increasing earthquake intensity in the shaking table tests

the first sudden change happened at grade Ⅷ intensity

and the slope changed from elasticity to plasticity. Expansion

penetration

and even overall sliding happened at the slope at grade Ⅸ intensity. Slide surface slipped along steep structural surface on trailing edge and shear outlet neighboring slope toe by shear and slides along penetrating weak structural surface. Therefore

slope may be at the status of plasticity after an intensive earthquake and it may lead to landslide with external forces.