SEISMIC RISK AND DAMAGE COST EVALUATION OF BASE ISOLATED BUILDINGS

SEISMIC RISK AND DAMAGE COST EVALUATION OF BASE ISOLATED BUILDINGS - Printable Version

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SEISMIC RISK AND DAMAGE COST EVALUATION OF BASE ISOLATED BUILDINGS - TAFATNEB - 12-20-2013

A methodology to evaluate quantitatively the seismic risk and the cost-effectiveness of a base isolated building
during its lifetime is presented. The process starts with the hazard analysis and the earthquake ground motion
modeling for the studied area. Series of artificial earthquake ground motions are generated by a stochastic method.
To get the response distribution of the target building, several dynamic nonlinear analyses are carried out by using
the generated artificial motions as input waves. By assuming a structural response distribution, the seismic risk
analysis is performed in terms of three structural parameters such as: interstory drift ratio (IDR), floor acceleration
(FA) and the structural damage index (DI). Finally, the cost-effectiveness of using base isolation system is
examined, by comparing the exceedance probability of repair cost in the target building with and without base
isolation during a given time period.

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