Seismic displacement of earth slopes incorporating co‐seismic accumulation of dynamic pore water pressure

The earthquake-induced displacement of sloping soil mass is an important indicator co-seismic landslide initiation. In this paper, improved Newmark model that considers the accumulation dynamic pore water pressure (DPWP) in caused by both vertical and horizontal ground motions proposed. can quantitatively describe changes seismic yield acceleration near-saturated infinite slopes. Three different types motion time histories are selected to compare performance proposed model, influence DPWP on slope obtained. analyses indicate weakening effect bidirectional earthquake excitation-induced more obvious than when only considering motion, slip surface soils state. initial saturation (Sr0) also investigated. Furthermore, accumulated be reasonably explained frequency distribution characteristics motions. Finally, numerical results paper show seldomly DPWP, or induced significantly underestimate value a