Title: Seismic performance evaluation of non-engineered RC irregular structures

Authors: Giammarco Neri; Humberto Varum; Hugo Rodrigues; Loris Vincenzi

Addresses: Department of Engineering 'Enzo Ferrari', University of Modena and Reggio Emilia, Italy ' CONSTRUCT-LESE, Faculty of Engineering (FEUP), University of Porto, Portugal ' RISCO, School of Technology and Management, Polytechnic Institute of Leiria, Portugal ' Department of Engineering 'Enzo Ferrari', University of Modena and Reggio Emilia, Italy

Abstract: The RC structures built with no specific anti-seismic codes represent an important percentage of the current building RC stock in European southern regions. Most of these buildings present irregularities more or less marked and it could represent one of the most dangerous categories from a seismic point of view. Within this context, the present work is developed with the aims to evaluate the seismic behaviour and to identify a possible brittle mechanism of two RC buildings which are part of the largest buildings typology in southern Europe. Both structures have irregularities, in plan and in elevation. The numerical modelling was carried out and dynamic and nonlinear static analyses were performed. The results are shown in terms of shear and drift profiles, drift vulnerability curves, plans of curvatures, moment-curvature diagrams, comparison between incremental dynamic analyses and pushover analyses, and a comparison between limit drifts included in codes and guidelines.

Keywords: reinforced concrete buildings; irregular structures; seismic assessment; earthquakes; seismic performance evaluation; seismic behaviour; brittle mechanisms; southern Europe; numerical modelling; nonlinear static analysis; shear profiles; drift profiles; drift vulnerability curves; curvature plans; moment-curvature diagrams; dynamic analysis; pushover analysis; limit drifts; codes; guidelines.

DOI: 10.1504/IJEIE.2016.081771

International Journal of Earthquake and Impact Engineering, 2016 Vol.1 No.3, pp.289 - 310

Received: 30 Jun 2016
Accepted: 14 Sep 2016

Published online: 24 Jan 2017 *

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