The vibration reduction performance of Tuned Liquid Damper on high-rise buildings with three-dimensional numerical simulation

Abstract

The vibration reduction effect of high-position fire-fighting water tanks on the roof of office buildings in State Grid Corporation of China is discussed in this article. A three-dimensional tuned liquid damper(TLD for short)-structure model was established based on Coupled Euler-Lagrange algorithm to compare the calculated results under unidirectional and bidirectional seismic waves. Meanwhile, a 10-storey frame structure with asymmetric plane was selected to study the controlling performance of TLD on torsional response. Top displacement and aseismic ratio are taken as the key parameters to verify the availability, and the results show that the displacement response of TLD-structure has the character of linear-superposition geometrically, and the response gets the maximum when the seismic characteristic period tends to its natural period. The position with smaller structural stiffness should be taken as the primary controlling part, and reduction effect is better in the direction with strong displacement-response. TLDs have positive effects on controlling the structural torsional response and the aseismic ratio could reach 30% or more.