Duration characteristics of ground motion based on Wenchuan Earthquake
Records from 56 stations on free-field within 150km to causative fault surface are used as database during the MW7.9 Wenchuan earthquake in china. According to this study, the duration of ground motion is strongly affected by rupture distance, site conditions, fault rupture directory and thrust of hanging wall. Duration is obtained based on the time between 10 and 80 per cent of Arias intensity. A simple attenuation relation in terms of rupture distance is proposed and compared with some available predictions. The durations of tri-component ground motions on hanging wall are smaller than those on the foot wall in the same range of rupture distance. Durations of ground motions close to rupture fault resulting from directivity effects are significantly different between the forward and backward direction, and this difference reaches nearly 2 times on average.
Duration Attenuation relations Site effects Directivity effects Hanging wall effects
Shunan Lu Changhai Zhai Lili Xie
College of Civil Engineering and Architecture, Harbin University of Science and Technology,150080, School of Civil Engineering, Harbin Institute of Technology, 150090, China School of Civil Engineering, Harbin Institute of Technology, 150090, China Institute Engineering Mec
国际会议
西安
英文
305-308
2011-09-22（万方平台首次上网日期，不代表论文的发表时间）