The plurality effect of topographical irregularities on site seismic response

作     者：Saeed Ghaffarpour Jahromi Sama Karkhaneh 

作者机构：Department of Civil EngineeringShahid Rajaee Teacher Training University 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2019年第18卷第3期

页      面：521-534页

核心收录：

学科分类：07[理学] 

主　　题：Topography eff ects surrounding topography site seismic response ABAQUS Program and PLAXIS Program 

摘      要：Topography can have signifi cant eff ects on seismic ground response during an earthquake because topographic irregularities cause considerable diff erences between the seismic waves emitted by the source and the waves reaching the ground surface. When a seismic motion happens in a topographically irregular area, seismic waves are trapped and refl ected between the topographic features. Therefore, the interaction between topographies can amplify seismic ground response. In order to reveal how interaction between topographies infl uences seismic response, several numerical fi nite element studies have been performed by using the ABAQUS program. The results show that topographic features a greater distance between the seismic source and the site would cause greater seismic motion amplifi cation and is perceptible for the hills far away from the source and the ridges. Also, site acceleration response is impacted by surrounding topography further than site velocity and displacement response.