摘要
在收集了世界范围内自由场地的近断层地震记录基础上 ,综合考虑台站场地和震源构造机制的差别 ,应用统计分析方法对近断层地震动的峰值加速度、峰值比、特征比值及特定周期处的反应谱的衰减关系进行了研究 ,并和集集地震得到的结果进行了比较 ,发现场地和震源机制的共同作用对近断层地震动的影响是很显著的 。
The attenuation relationships are presented in terms of peak ground acceleration, vertical to horizontal ratio, specific ratio and the response spectra for given period based on site and focal mechanisms of the worldwide free-field near-fault records. A comparison of these relationships is made with the research result for Chi-Chi earthquake. It can be concluded that the influence of combined site and focal mechanism on near-fault ground motions is remarkable.
出处
《工程地质学报》
CSCD
2004年第2期141-147,共7页
Journal of Engineering Geology
基金
国家自然科学基金资助项目 (No.5 0 2 780 0 2 )
关键词
自由场地
震源机制
近断层地震动
衰减特性
Site, Focal mechanism, Near-fault ground motion, Attenuation characteristics
