Evaluation of intensity measures for velocity pulse-like earthquake ground motions based on shear type MDOF systems

被引：0
|
作者：
Zhou, Jing [1 ,2 ]
Chen, Kai-Liang [1 ]
Fang, Xiao-Dan [2 ]
机构：
[1] Department of Civil Engineering, Xiangtan University, Xiangtan, Hunan 411105, China
[2] Department of Civil Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
来源：
Gongcheng Lixue/Engineering Mechanics | 2011年 / 28卷 / 06期
关键词：
Engineering geology - Earthquakes - Ultrasonic devices - Degrees of freedom (mechanics) - Dispersions - Shear flow - Earthquake engineering - Ductility;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The correlation between intensity measures (IM) for velocity pulse-like earthquake ground motions and nonlinear deformation demand of shear type multi-degree-freedom (MDOF) systems is researched, and the efficiency of IM is described. Based on the nonlinear dynamic time analysis of MDOF systems subjected to 20 large velocity pulse-like ground motions, this work investigates the variation trend of the correlation coefficient between IM for pulse-like ground motions and maximum nonlinear roof drift demand of MDOF systems with the constant-ductility system setting. Linear regression and dispersion analyses are performed on these results to identify the efficiency of IM for pulse-like ground motions. The study shows that the fundamental period and ductility level of a structure have important influence on the correlation and dispersion. When PGV is used as IM for pulse-like ground motions, the correlation and dispersion is relatively stable with the large relative coefficient and the small dispersion.
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页码：149 / 155
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