二维爆破地震波作用下三自由度弹性结构的动力响应  

DYNAMIC RESPONSE OF THREE-FREEDOM ELASTIC STRUCTURE TO TWO-DIMENSIONAL BLASTING SEISMIC WAVES

作　　者：魏海霞[1] 陈士海[1] 张安康[1] 茅晓辉[1] 

机构地区：[1]山东科技大学土木建筑学院,山东青岛266510

出　　处：《工程爆破》2009年第4期1-4,12,共5页Engineering Blasting

基　　金：国家自然科学基金(50778107);教育部高校博士学科点专项基金(20060424002);山东省"泰山学者"建设工程专项经费资助

摘　　要：以二维爆破地震波作用下的三自由度弹性结构体系为研究对象,运用Matlab编程实现用时程分析方法求解该体系的动力响应。通过分析各种情况下的结构响应幅值结果,探讨了爆破振动幅值、频率、持续时间等爆破振动三要素对二维爆破地震波作用下三自由度弹性结构动力响应的影响,并得出一些有益的结论。可为建立多维爆破地震波作用下结构物的多参数安全判据,提供参考。By taking a three-freedom elastic structure under two-dimensional blasting seismic waves as investigating subject, this paper developed a solution to getting its dynamic responses with the use of time history analysis method which was assisted by Matlab programming. Based on analyzing the results of peak values of structural dynamic responses under different conditions, effects of three blasting vibration factors including peak value, frequency and duration on the dynamic response of a three-freedom elastic structure to two-dimensional blasting seismic waves, were discussed and several useful outcomes were presented. The present paper offered references to the establishment of multi-parameter safety criterion for multi-dimensional blasting seismic waves.

关 键 词：爆破地震波 时程分析方法 结构动力响应 爆破振动 幅值 频率 持续时间 

分 类 号：O38[理学—流体力学]