Abstract
The optimal design of the conventional members of a building equipped with either passive or active control systems is presented for earthquake excitations. The optimized structure with structural control systems is known as an active structure. The influence of the structure’s inherent structural damping on the optimal design is included. The energy imparted to a structure designed so that its structural members would yield in a major earthquake is dissipated by damping and yielding. The inherent damping and yielding energy due to the conventional structural members, as well as the external damping energy from passive or active structural control are considered. The optimal design of viscoelastic dampers in terms of their number, location and cross-sectional area to achieve an increased effective damping is examined. Elastic and inelastic analyses of conventional and active structures are performed in which the number of yielding events, and the energy dissipation through damping and yielding are compared for different earthquakes. The structural control systems are found to assist in reducing the peak structural response and the number of yielding events.
Published Version
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