Earthquake risk scenarios in urban areas: a review with applications to the Ciutat Vella district in Barcelona, Spain
2018
Lantada, Nieves | Pujades Beneit, Lluís | Barbat Barbat, Horia Alejandro | Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental | Universitat Politècnica de Catalunya. EGEO - Enginyeria Geomàtica | Universitat Politècnica de Catalunya. GIES - Geofísica i Enginyeria Sísmica | Universitat Politècnica de Catalunya. RMEE - Grup de Resistència de Materials i Estructures en l'Enginyeria
This is an Accepted Manuscript of an article published by Taylor & Francis Group in International Journal of Architectural Heritage on 2018, available online at: http://www.tandfonline.com/10.1080/15583058.2018.1503367.
Show more [+] Less [-]The vulnerability index and capacity spectrum-based methods used to assess the expected physical damage in dwellings are revisited, and their main advantages and shortcomings are analyzed and discussed. Then, a vulnerability index-based method is used to assess the expected damage in the oldest district of Barcelona, Spain. The risk analysis is performed for earthquake scenarios defined by macroseismic intensities of V, V-VI, VI, VI-VII, and VII to design seismic emergency plans. According to the Spanish Seismic Code, the basic peak ground acceleration for a 475-year return period is 0.04 g, which corresponds to an intensity of VI. Thus, the expected physical damage is quantified and its impact on population and other quantities, such as debris and economic cost, are studied. In spite of the low-to-moderate seismic hazard in Barcelona, the results show that the risk is high, due to the high exposure and vulnerability of the built environment.
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