Effect of Tuned Mass Dampers and Liquid Dampers on Wind-Induced Response of Tall/Slender Structures

摘要

An investigation was modelled as a lumped mass multi-degree-of-freedom system taking into account both bending and shear. The wind turbulence is modelled as a stochastic process which is stationary in time and non-homogeneous in space. The effectiveness of the damping device is measured in terms of the reduced motion and the overall mass of the proposed system. A random vibration analysis utilizing transfer matrix formulation is carried out to obtain response statistics. An equivalent linearization technique is employed to deal with the non-linear damping term in the fundamental equation of the tuned liquid damper. Two numerical examples representing different structural systems are given in order to illustrate the effectiveness of the proposed system.