Title: Sensitivity analysis of the seismic performance of ancient mixed masonry-RC buildings in Lisbon
Authors: Jelena Milosevic; Serena Cattari; Rita Bento
Addresses: CERIS, Instituto Superior Técnico, Universidade de Lisboa, IST DECivil, Av. Rovisco Pais, Lisboa, 1049-001, Portugal ' Department of Civil, Environmental and Chemical Engineering (DICCA), University of Genoa, Via Balbi 5, Genova, 16126, Italy ' CERIS, Instituto Superior Técnico, Universidade de Lisboa, IST DECivil, Av. Rovisco Pais, Lisboa, 1049-001, Portugal
Abstract: In the first half of the 20th century, the mixed masonry-RC buildings were introduced in Lisbon; they were typically designed without strictly considering seismic-design requirements. To assess their potential seismic vulnerability, it is crucial to simulate adequately their actual response by: i) explicitly considering their characteristics; ii) identifying the main parameters that affect their seismic performance. In this context, the aim of the paper is twofold. Firstly, the structural elements are characterised in detail. This first study includes the proposal of reference values for the main mechanical parameters, which are defined by combining various data available in the literature adopting a Bayesian approach. Secondly, to identify the main parameters that affect the seismic response of one type of the ancient mixed masonry-RC buildings, a sensitivity analysis is adopted and implemented; within this context, the influence of different material properties and the quality of connections among structural walls are considered.
Keywords: aleatory and epistemic uncertainties; Bayesian approach; mixed masonry-RC 'Placa' buildings; nonlinear static; seismic performance; sensitivity analysis.
International Journal of Masonry Research and Innovation, 2018 Vol.3 No.2, pp.108 - 154
Received: 01 Apr 2017
Accepted: 10 Oct 2017
Published online: 21 Jun 2018 *