双向偏心结构扭转耦联地震反应的序列最优控制

Sequential optimal control of torsional coupled seismic response for bidirectionally eccentric structure

本文分析了不对称建筑结构平移-扭转耦联振动的动力特性及地震作用下的响应;根据地震动输入结构的过程,推导出一种更为一般的最优控制算法,所获得的控制力表达式同时包括地震响应和地震激励。通过对一非规则四层框架结构的扭转耦联地震反应控制分析表明,该算法不仅能有效地控制结构的平移地震反应,而且更有效地抑制结构的扭转耦联地震反应。

This paper analyzes the torsional coupled dynamic characteristics and seismic response of asymmetrical buildings and presents a generalized algorithm for optimal control of structures subjected to earthquake excitation according to the process of the structure input earthquake. The expression of control force is obtained by this algorithm, which concludes both the effect of structural response and the seismic excitation. By the control of torsional coupled seismic response for a four-story asymmetrical frame structure, the numerical results show that the proposed control algorithm can effectively control the lateral seismic response of structures and reduce the torsional coupled seismic response of bidirectionally eccentric structures more effectively.