Theory and Applications of the 3-DOF Modal System for PBSE of Asymmetrical Buildings
Journal
Geotechnical, Geological and Earthquake Engineering
Journal Volume
32
Pages
251-261
Date Issued
2014
Author(s)
Abstract
Seismic evaluation plays an important role in performance based seismic engineering (PBSE). The modal system is the basis of structural dynamics, which is closely associated with PBSE. This paper shows that the modal system is not necessary to be a single-degree-of-freedomoscillator. Actually, a modal system with three degrees of freedom is even more suitable for representing a single vibration mode of two-way asymmetrical buildings. The proposed three-degree-of-freedom modal system has many advantages of seismic evaluation for inelastic or nonproportionally damped asymmetrical buildings. Furthermore, from the proposed modal system, a novel tuned mass damper has been developed for the modal control of asymmetrical buildings. The study results show that the novel tuned mass damper is effective in reducing two translational and one rotational displacements simultaneously. © Springer Science+Business Media Dordrecht 2014.
SDGs
Type
journal article