摘要
研究了新型压电摩擦阻尼器对输电塔结构模型在地震作用下的振动控制问题。提出了一种新式的拉索-压电摩擦阻尼器减振系统,对安装有拉索-压电摩擦阻尼器减振系统的输电塔结构模型进行了振动台试验,试验中采用最优Bang-Bang半主动控制策略对阻尼器出力进行实时调节。对试验进行数值模拟分析,并将分析结果与试验结果进行对比,同时对结构的耗能进行了时程分析。结果表明:拉索-压电摩擦阻尼器减振系统能有效减小输电塔结构模型在地震过程中的响应;模拟与试验结果相吻合,说明了模拟结果的可靠性良好。
A novel cable -piezoelectric friction damper system is proposed. Experiment is carried out on transmission tower with cable-piezoelectric friction damper system. In the experiment, the semi-active control strategy of optimal Bang-Bang is used to control damping force. Numerical simulations are carried out and the results are compared with experimental results. Analysis on energy dissipation is also discussed. The results indicate that cable-piezoelectric friction damper system can effectively resolve the energy and reduce the vibration response of the structure. The simulation results are in good agreement with experimental results, which indicates that the simulation resuits are reliable.
出处
《世界地震工程》
CSCD
北大核心
2016年第3期106-111,共6页
World Earthquake Engineering
基金
国家青年科学基金项目(51008245)
