Abstract：The Newmark sliding block method was generally employed to calculate the seismic displacement of slopes. The calculation procedure considers only the parameters of the initial sliding moment，while the variation of the parameters due to the sliding rotation is not taken into account. Based on the theory of limit analysis，the influences of the sliding rotation angle on all the work rate and geometrical parameters are taken into account. The expressions of the real-time yielding acceleration factor，angular acceleration，seismic horizontal displacements are derived. Besides，a program was developed using Matlab software to update real-timely the dynamic parameters of the sliding soil mass in each sampling time-interval of the seismic wave and to realize the real-time dynamic Newmark sliding block method. This method was applied in a typical slope case and compared with the traditional Newmark sliding block method. The comparison indicated that the real-time yielding acceleration factor increased with the rotation angle increasing. The displacement considering the real-time dynamic effect was smaller than that from the traditional Newmark method，and the difference between them decreased as the global stability of slope increased.
2016, Vol. 35 
