考虑Md对联体结构振动控制影响的研究  

STUDY ON INFLUENCE OF M_d ON VIBRATION CONTROL OF A CONNECTED STRUCTURE

作　　者：董博[1] 邹立华[1] 戴素亮[1] 刘爱平[1] 刘卿 

机构地区：[1]兰州交通大学土木工程学院,兰州730070 [2]上海市第一建筑有限公司,上海200120

出　　处：《振动与冲击》2008年第1期131-134,139,共5页Journal of Vibration and Shock

基　　金：兰州交通大学青蓝人才工程资助(QL-05-08A)

摘　　要：提出了一种新的振动控制体系——联体多结构振动控制体系。首先,联接体质量Md作为一个附加点加以考虑,建立了分析计算模型,推导了其振动方程。其次,对结构进行时程分析并运用虚拟激励法计算了联体多结构振动控制体系在随机地震动激励下动反应谱密度及方差。最后讨论了影响控制效果的因素及控制器参数的优化。研究结果表明:联体多结构振动控制体系对结构地震响应可进行有效控制。A new pattern of vibration control for a connected multi-structure system is presented.Its calculation model and vibration control equation are established,while the connected segment is regarded as an attached mass M_d.Time history analysis method is adopted in structure analysis and the pseudo-excitation method is applied to calculate the PSD matrices and the variance for random responses of the connected multi-structure system.The influence factors of the control system are investigated.Finally,optimization for the parameter of the control system is performed.The results obtained show that the new vibration control pattern is effective.

关 键 词：联体多结构 联接体 时程分析 虚拟激励法 谱密度 

分 类 号：TU352.1[建筑科学—结构工程]