采用在双体单自由度结构间设立Kelvin型被动控制单元的最优参数表达式,并基于等效双体单自由度体系求得了相邻多层剪切型结构间控制器最优参数。利用列举法并基于二次型性能指标值(LQR)确定了控制器优化布置位置,讨论了布置控制器后对结构地震响应的影响以及对结构动力特性的影响,通过数值分析证实了采用等效双体单自由度体系代替相邻多自由度结构体系的正确性,表明了这种被动控制方法能够非常有效地减小在地震作用下相邻结构的地震响应。
The optimal parameter expression of the Kelvin model-defined element which is used to interconnect two single- degree-of-freedom systems for passive control is adopted. The optimal controller parameter of adjacent multi-storey shear type structure is obtained based on the two equivalent single-degree-of-freedom systems. The optimal positions of passive controllers are determined based on quadratic performance index (LQR) through enumeration. Then the impact of the placement of controllers on seismic response as well as dynamic behavior of structures is discussed. The numerical results show that using two equivalent single-degree-of-freedom systems instead of the adjacent multi-degree-of-freedom structure is reasonable, and the passive control method which can effectively reduce the seismic response of adjacent structures under earthquake.