In this study

the “Xiaguiwa” landslide in Jinsha River Basin of Qinghai-Tibet Plateau is taken as a prototype

and the shaking table model test on bedding rock slope with weak interlayer is carried out. The dynamic response of bedding rock slope with weak interlayer under earthquake is studied from the aspects of peak ground acceleration (PGA) amplification factor and Hibert-Huang transform (HHT) time-frequency characteristics. The results show that the slope exhibits obvious “elevation effect” and “surface effect” under the action of input seismic waves. The PGA is larger at the 1/4 height of the slope surface from the bottom of the slope

the top of the slope

and the weak interlayer. With the increase of the intensity of the input seismic waves

the slope stiffness and natural vibration frequency decrease gradually. When the input wave amplitude reaches 0.7g

the slope cracking and structural deformation occur. When the input amplitudes are the same

the PGA amplification coefficient is positively correlated with the elevation

and decreases gradually with the increase of the input amplitudes at the same measuring point. The influences of different input wave types and time scale factors on the slope dynamic response are significantly different. The Hilbert spectrum shows that the elevation and weak interlayer amplify the energy of seismic waves

especially the high-frequency part. The Hilbert marginal spectrum shows that the weak interlayer could amplify the energy of the high-frequency part. The Hilbert marginal spectrum indicates that the cumulative energy of the high-frequency part is significantly amplified under the influence of soft interlayer

and the energy of the measuring point at the 1/4 height of the slope surface from the bottom of the slope suddenly increases

which is similar to the conclusion of the acceleration amplification effect. The results of Hilbert marginal spectrum shows that with the increase of the amplitude of the input seismic wave

the cumulative energy of the high-frequency part and the part representing the natural vibration frequency of the slope gradually decrease

and the energy of the main frequency part of the input seismic wave gradually dominates

indicating that the modal characteristics of the slope gradually disappear.