摘要
从现代控制理论入手,采用部分状态反馈理论的闭环控制,进行了高层建筑结构抗震的ATMD主动控制分析和方案设计.以某8层建筑为例,进行了地震荷载作用下ATMD控制系统物理参数和控制算法软参数优化分析,得到了ATMD子系统的最优各项物理参数.在此基础上,进行了结构在地震作用下ATMD主动控制的时程分析.计算结果表明,在EI-Centro波作用下,ATMD控制系统使得结构顶层位移和加速度峰值分别减小了30.16%和24.13%,且控制力峰值也较小,为266.08 kN.从而验证了ATMD控制系统的有效性和可行性.
Under modem control theories, the analysis and design of ATMD active control for seismic responses of buildings was carried out using partial state feedback theories in closed-loop control. Taken an eight- building as an example, the optimization of physical and computational parameters for ATMD subsystem was conducted under the input of earthquakes, and optimal physical parameters were obtained as a result. Afterwards, the numerical simulation for the structure with ATMD control system against earthquakes was carried out. The simulation results show that the ATMD control system could play a good role on suppressing seismic responses of such a building, i.e. 30.16% reduction of displacement and 24.13% reduction of acceleration of top floor, but the control force was so small to 266.08 kN. Consequently, ATMD control system＇s availability and feasibility was verified.
出处
《长沙交通学院学报》
2007年第2期55-59,共5页
Journal of Changsha Communications University
基金
国家自然科学基金资助项目(10472029)
