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

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.