在地震动水平与摇摆分量作用下高层结构随机地震反应

来源期刊：中南大学学报(自然科学版)2006年第3期

论文作者：陆铁坚 李芳 余志武

文章页码：623 - 627

关键词：剪切型结构;多维地震动;功率谱密度函数;随机反应

Key words：shear type structures; multiple earthquake excitations; powers pectrum density function; random response

摘    要：根据地震作用的概率统计特征,研究剪切型高层结构在地震动的水平与摇摆分量联合作用下的随机反应。建立了在地震动水平与摇摆分量联合作用下高层结构的振动方程,推导出在平稳随机地震作用下结构体系的反应功率谱密度函数,得到结构体系反应的各项统计特征量计算表达式。在此基础上,编制相应的计算机程序,对实际结构进行数值计算。研究结果表明:地震的摇摆分量对高层结构的位移影响较大,不可忽视。 附件: z2006-03-39

Abstract: According to the characteristics of probability and statistics of seismic action, random response of shear type high-layer structures in combined action of horizontal and rocking ground motions was discussed. The vibration equation of high-layer structures was derived in combined action of horizontal and rocking ground motions. Based on analysis of random response of shear type high-layer structures subject to multiple seismic inputs, some formulas were gotten to calculate various statistical characteristics of response of structures. Program was made and numerical calculations for some practical structures were carried out.The results show that rocking component of ground motions has great effects on high-layer building, which should not be neglected.