高层钢结构调频液体阻尼器抗震控制优化设计

Optimum Design of Multiple Tuned Liquid Dampers for the Seismic Control of Tall Steel Structures

将调频液体阻尼器简化为质量 -弹簧 -阻尼器系统 ,导出了高层钢结构 -单个和多个调频液体阻尼器系统 ( TLD/TL Ds/MTL D)的动力放大系数和减震系数 .据此并考虑钢结构的阻尼比 ,运用数值迭代寻优技术 ,得到了可供工程设计采用的设计参数 .同时就振型控制中主要敏感性参数对调频液体阻尼器设计参数的影响进行了研究 ,建议了单个和多个调频液体阻尼器系统本身及高层钢结构 - TL D/TLDs/MTLD系统抗震控制设计过程 .最后 ,用一个算例说明了调频液体阻尼器在高层钢结构抗震控制中的应用及其有效性 .

Tuned liquid damper was modeled as a mass- spring- damper system. The calculation formulae for the dynamic magnification factor( DMF) and the dynamic reducing factor( DMF) of tall steel struc- ture- single and multiple tuned liquid dampers ( TL D/TLDs/MTLD) systems were derived based on the model.On the basis of the formulae and in the consideration of the damping ratio of tall steel structure, the design parameters were given for the engineering design using iterative technique.Simultaneously,the effect of the main sensitive parameters on the design parameters was studied in the modal control. The de- sign procedures for the single and multiple tuned liquid damper systems and tall steel structure- single and multiple tuned liquid damper systems were proposed for seismic control. Eventually,an example was given to illustrate the application and effectiveness of tuned liquid dampers for seismic control.