Centrifuge model test on the seismic response of colluvial landslide

Seismic response behaviors of colluvial landslide were discussed by inputting Taft wave with different intensities based on dynamic centrifuge model test. Results under Taft wave and Qingxi wave were comparatively analyzed. Results show that both the horizontal and vertical peak ground acceleration (PGA) amplification coefficients at slope surface increase with the increasing of height. The landslide shows an obvious altitude amplification effect. The distributions of horizontal PGA amplification coefficients in the landslide body are different from those of the landslide surface. The landslide surface has an obvious reflect effect on input seismic wave, and it shows the surface effect. The bedrock also has amplification effect along with the height of the landslide, and it has reductive effect compared with the input seismic waves. At the same height, the PGA amplification coefficients at landslide surface, landslide body and bedrock have different distributions with the increasing of earthquake amplitudes.