Outline

Ingegneria Sismica

Ingegneria Sismica

SEISMIC RETROFITTING OF CONFINED MASONRY-RC BUILDINGS: THE CASE STUDY OF THE UNIVERSITY HALL OF RESIDENCE IN MESSINA, ITALY

Author(s): Dario De Domenico 1, Nicola Impollonia 2, Giuseppe Ricciardi 1
1Department of Engineering, University of Messina, Italy
2Department of Civil Engineering and Architecture, University of Catania, Italy
, Dario De Domenico., , Nicola Impollonia., and , Giuseppe Ricciardi. “SEISMIC RETROFITTING OF CONFINED MASONRY-RC BUILDINGS: THE CASE STUDY OF THE UNIVERSITY HALL OF RESIDENCE IN MESSINA, ITALY.” Ingegneria Sismica Volume 36 Issue 1: 54-84, doi:….

Abstract

Several buildings located in earthquake-prone areas were conceived according to past design guidelines and do not comply with current seismic regulations. This requires effective seismic retrofitting interventions. After the collapse of the university hall of residence of L’Aquila, Italy, in 2009, several regional authorities in other Italian cities planned surveys for seismic assessments of similar student accommodation buildings, disclosing dramatic structural deficiencies in many cases. One of these buildings concerns the student hall of residence of Messina, Italy, a confined masonry-RC building analysed in this paper. This work summarizes the theoretical conception and underlying design philosophy of the seismic retrofitting of this building (through buckling restrained braces and pre-tensioned steel ribbons), describes the pushover analysis on the original and retrofitted structure, illustrates the acceptance tests on the hysteretic dampers performed at laboratory CERISI of Messina and discusses some construction issues that have arisen up to date during the installation phases.

Keywords
seismic retrofit, hysteretic dampers, buckling restrained braces, pre-tensioned stainless steel ribbons, confined masonry building

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