Abstract
In this study, the seismic input model of slope is proposed to investigate the dynamic response of the rock slope under obliquely incident seismic wave on the basis of the time-domain wave analysis method. The model includes viscoelastic boundary considering the infinite foundation radiation damping and the seismic obliquely incident method. The semi-infinite space numerical example is simulated to verify the validity and accuracy of the model. Based on the established model, the effects of the variation of the seismic wave incident angles and slope angles on the dynamic response of a rock slope are analyzed. The results demonstrate that the changes of the incident angle and the slope angle have no discernible effect on the dynamic response of the rock slope when the P wave is obliquely incident. As the SV wave is obliquely incident, the peak ground acceleration amplification coefficient along the slope surface gradually increases with the increase of the incident angle; when the slope angle gradually increases, the peak ground acceleration amplification coefficient along the slope surface will also gradually increase at the upper part of the slope. The research results can provide some basis for the pseudostatic method to determine the seismic action coefficient.
Highlights
Earthquake-induced rock slope damage is one of the most widespread and dangerous geological disasters in the world
For the seismic stability analysis of a rock slope, it is indispensable to simulate the topographic and geological conditions of the site, and the internal sliding generated by slope movement and the radiation damping effects of the infinite foundation. erefore, it is more reasonable to use the free-field input model, and it is compatible with the wave method. e finite element equation of the slope seismic input model can be expressed as
The seismic input model of slope is, proposed to analyze the dynamic response of the rock slope under the obliquely incident seismic wave based on the time-domain wave analysis method. e semi-infinite space numerical example is simulated to verify the validity and accuracy of the model
Summary
Earthquake-induced rock slope damage is one of the most widespread and dangerous geological disasters in the world. E western region of China is located in the high seismic intensity area where strong earthquakes occur frequently. With the construction of a large number of hydropower projects in the western region, the problem of slope dynamic stability under seismic action has become more and more prominent. Significant progress has been achieved in regard to the slope static stability analysis of water resources and hydropower engineering, while the comparatively unsubstantial part is the dynamic slope stability analysis under the action of intense earthquakes [9]. The seismic stability analysis of the slope has grown up to be a hot issue to be urgently solved in the construction of engineering. There are no explicit provisions on these two aspects of the three existing Chinese codes related to the slope of water conservancy and hydropower projects [9], which makes it more difficult to study the slope seismic resistant design
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
