不对称双塔楼结构连接控制方案比较研究

Comparative Study of Coupling Structure Control Strategies Used in Twin-tower Structure with Large Podium

对采用粘滞流体阻尼器和共享调谐质量阻尼器连接的带裙房不对称双塔楼结构连接控制方案进行了比较研究。采用在双体单自由度结构间Maxwell型阻尼器的最优参数表达式,并基于等效双体单自由度体系求得了双塔楼间粘滞流体阻尼器优化零频率阻尼系数与松弛时间,与通过大量数值计算得到的参数化结果吻合良好。并将优化设计后的阻尼器连接控制方案与共享调谐质量阻尼器控制方案进行了详细比较,数值比较结果表明二者控制效果相当,但是前者更具优越性。

Connect twin towers by viscous fluid damper and sheared tuned mass damper （STMD） are used in twin-tower structure with large podium and compared in detail. The optimal parameter expression of the Max-well model-defined element which is used to interconnect two single-degree-of-freedom systems for passive control is adopted, The optimal relaxation time and the optimal damping coefficient at zero frequency of damper between twin towers are obtained based on the two equivalent single degree of freedom systems. The results are consistent with those obtained by the extensive parametric study. A detail comparison between the optimized damper-controlled strategies and STMD is made. The results show that the control effectiveness of two coupling structure control strategies is comparable with each other, but the former one is better.