Effects of soil dynamic response on post-earthquake deformation of slopes based on nested Newmark mo

• 作 者: Zhou Zheng Gao Yufeng Zhang Fei Song Jian Zou Degao
• 机 构: Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai Universit
• 出 处: 地震工程与工程振动（英文版）
• 发表日期: 2020年3期
• 关键词: slopes earthquakes permanent displacement Newmark soil dynamic response

Nested Newmark model (NNM) can obtain the post-earthquake profile of the slopes in limit equilibrium or limit analysis method. The purpose of this study is to extend the NNM from the limit equilibrium method to a limit analysis method, and then involve the dynamic response of slopes into the prediction of the permanent displacement based on decoupled analysis. Parametric studies are carried out to further investigate the influences of slope height, soil shear wave velocity and input ground motion. The calculated results indicate that neglecting the dynamic response of slopes can underestimate the post-earthquake displacements. As the slope height increases or shear wave velocity reduces, the underestimation is more significant. At the fundamental natural period of the site, the underestimation is particularly remarkable. For induced earthquake waves with a small value of mean period, the influence of the dynamic response can be ignored when the fundamental period deviates from the mean period.