Fragility analysis for seismic vulnerability assessment of buildings: a review
Abstract
Fragility analysis is one of the trending probabilistic seismic performance methodologies. With the advancement in computational methodologies and large database of existing buildings, fragility analysis can be implemented for precise vulnerability assessment of buildings. The vulnerability curves can be categorized into three groups-empirical, analytical and hybrid. Empirical approach includes-Damage Probability Matrices and Vulnerability Functions, which depend on the damage-motion relationship statistics observed after an earthquake. Analytical curves adopt damage distributions simulated from the analyses of structural models. Hybrid curves overcome the deficiencies of the above two approaches by combining post-earthquake damage statistics with simulation techniques. This paper reviews the importance of fragility analysis using existing methodologies and focuses on their key features highlighting limitations. The paper suggests the way forward for selection of appropriate assessment method for seismic vulnerability assessment of existing buildings and the incorporation of experimental vibration based
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