摘要
对地震作用下结构破坏的特征及强震记录进行分析,指出对脉冲型地震动中主震脉冲的作用效应进行研究的必要性;利用三角脉冲作为强震主脉冲的理论简化,给出双三角脉冲作用下单自由度弹性体系的动力反应解析解;采用研究反应谱变化规律的方法,分析两类脉冲组合即:波前脉冲组合以及波后脉冲组合,总结归纳出波前脉冲与波后脉冲对主脉冲作用效应的不同贡献规律,为进一步研究揭示脉冲型地震动中主脉冲的破坏能力奠定了基础.
Based on the analyses for strong ground motion records and the damage characteristics of structures under earthquakes, this paper shows the study on damage effects of the major pulse in typical pulse - type ground motions. Using the triangle pulse as the substitute of the major motion pulse, the dynamic analytical resolution of the elastic SDOF system under bi - triangle pulse excitations is presented. By studying the changing rule of the response spectrum for two types of the pulse combination, i.e. , the major pulse related predecessor and successor pulse combinations, it was found that the contribution of the predecessor and successor pulse to the major pulse effects was quite different for structural system. It provides a good understanding of the damage potential of the major pulse in strong ground motions.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2006年第8期1394-1397,共4页
Journal of Harbin Institute of Technology
基金
国家自然科学基金资助项目(50338040)
关键词
主震脉冲
结构动力反应
脉冲组合效应
major motion pulse
dynamic response of structures
excitation effects of pulse combination
作者简介
E—mail：iemjwdai@163．com.戴君武（1967-），男，研究员，博士生导师;
张敏政（1946-），男，博士，教授，博士生导师．
