Assessing the seismic vulnerability of masonry buildings

© 2013 Woodhead Publishing Limited All rights reserved. Masonry structures represent the highest proportion of the building stock worldwide and in regions affected by destructive seismicity. Together with reinforced concrete buildings they account for the largest proportion of casualties in earthquakes. However, well-built masonry buildings have survived for centuries, even in regions of high seismicity. In the past, seismic vulnerability assessment of masonry structures has been conducted using empirical methods, based on post-event collection of damage data. This approach does not allow easy correlation of structural behaviour with observed damage and quantification of the effect of seismic strengthening on seismic resistance. After an initial review of the main issues associated with the seismic vulnerability assessment of masonry buildings, the chapter presents the rationale and algorithm of a procedure based on limit state analysis and collapse mechanisms (FaMIVE), to derive capacity curves for masonry structures. It is shown how the procedure can be used to derive vulnerability and fragility functions following the methodology of the capacity spectrum method and the performance-based assessment method. Treatment of model and data uncertainties concludes the chapter.

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