Wind-induced vibration control and parametric optimization of connected high-rise buildings with tuned liquid-column-damper-inerter

摘要

A novel passive control device, defined as tuned liquid-column-damper-inerter (TLCDI), with nonlinear characteristics is developed for control of the wind-induced responses of adjacent high-rise buildings. TLCDI exploits the combined advantages of liquid sloshing inside TLCD container as well as mass amplification effects of the inerter to control the wind induced responses. Firstly, a model for adjacent high-rise buildings linked by a TLCDI is established subjected to wind loading. Subsequently, an equivalent linearization method is used to study the model, and the results are verified by a numerical method. Finally, mitigation effects of the TLCDI with optimal designs on wind-induced responses are investigated by comparison studies with the results of two tuned liquid column dampers (TLCDs) installed on benchmark buildings. The results indicate that the TLCDI, which is much lighter than two TLCDs, dramatically decreases the wind-induced acceleration responses of the linked buildings by 37.7% (Building-1) and 42.0% (Building-2) at the across-wind direction (90 degrees wind direction).