Title: Seismic fragility curves for timber-framed masonry structures based on empirical damage data

Authors: Leonidas-Alexandros S. Kouris

Addresses: IUSS Pavia, Via Ferrata 1, Pavia, Italy

Abstract: Seismic actions exerted on a traditional timber-framed masonry structural system existing in Leukas, Greece during the 2003 earthquake (magnitude 6.2) revealed its antiseismic merits. All the buildings survived without reaching a collapse. The structural system of traditional timber-framed masonry of Leukas and its seismic performance are presented. The potential seismic vulnerability of these buildings is investigated using the statistical damage data collected during the post-earthquake surveys and applying regression analyses. Least-square methods are carried out; linear regression and subsequently, nonlinear regression. The latter is carried out using various algorithms. Empirical fragility curves in terms of peak ground acceleration (PGA), peak ground velocity (PGV) and macroseismic intensity for the 2003 Leukas earthquake are generated. Comparisons and remarks are made for each methodology.

Keywords: timber-framed masonry structures; Leukas Island; seismic vulnerability; linear regression analysis; nonlinear regression analysis; empirical fragility curves; damage data; earthquakes; Greece; least squares; peak ground acceleration; PGA; peak ground velocity; PGV; macroseismic intensity; timber-framed buildings.

DOI: 10.1504/IJSMSS.2016.078715

International Journal of Sustainable Materials and Structural Systems, 2016 Vol.2 No.3/4, pp.233 - 249

Received: 20 Feb 2015
Accepted: 17 Nov 2015

Published online: 01 Sep 2016 *

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