Evaluation of the seismic performance of existing RC buildings: II. a case study for regular and irregular buildings

Repapis, C; Zeris, C; Vintzileou, E

dc.contributor.author	Repapis, C	en
dc.contributor.author	Zeris, C	en
dc.contributor.author	Vintzileou, E	en
dc.date.accessioned	2014-03-01T01:24:21Z
dc.date.available	2014-03-01T01:24:21Z
dc.date.issued	2006	en
dc.identifier.issn	1363-2469	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17229
dc.subject	Behaviour factor	en
dc.subject	Ductility	en
dc.subject	Existing irregular buildings	en
dc.subject	Limit state	en
dc.subject	Overstrength	en
dc.subject	Performance evaluation	en
dc.subject	Pushover analysis	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Ductility	en
dc.subject.other	Earthquake effects	en
dc.subject.other	Parameter estimation	en
dc.subject.other	Seismic waves	en
dc.subject.other	Shear walls	en
dc.subject.other	Stiffness	en
dc.subject.other	Structural design	en
dc.subject.other	Behaviour factor	en
dc.subject.other	Existing irregular buildings	en
dc.subject.other	Limit state	en
dc.subject.other	Overstrength	en
dc.subject.other	Performance evaluation	en
dc.subject.other	Pushover analysis	en
dc.subject.other	Reinforced concrete	en
dc.title	Evaluation of the seismic performance of existing RC buildings: II. a case study for regular and irregular buildings	en
heal.type	journalArticle	en
heal.identifier.primary	10.1142/S1363246906002657	en
heal.identifier.secondary	http://dx.doi.org/10.1142/S1363246906002657	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	The results of a parametric study are presented, concerned with the evaluation of the structural overstrength, the global ductility and the available behaviour factor of existing reinforced concrete (RC) buildings designed and constructed according to past generations of earthquake resistant design codes in Greece. For the estimation of these parameters, various failure criteria are incorporated in a methodology established to predict the failure mode of such buildings under planar response, as described in detail in a companion publication. A collection of 85 typical building forms is considered. The influence of various parameters is examined, such as the geometry of the structure (number of storeys, bay width etc.), the vertical irregularity, the contribution of the perimeter frame masonry infill walls, the period of construction, the design code and the seismic zone coefficient. The results from inelastic pushover analyses indicate that existing RC buildings exhibit higher overstrength than their contemporary counterparts, but with much reduced ductility capacity. The presence of perimeter infill walls increases considerably their stiffness and lateral resistance, while further reducing their ductility. Fully infilled frames exhibit generally good behaviour, while structures with an open floor exhibit the worst performance by creating a soft storey. Shear failure becomes critical in the buildings with partial height infills. It is also critical for buildings with isolated shear wall cores at the elevator shaft. Out of five different forms of irregularity considered in this study, buildings with column discontinuities in the ground storey exhibit the worst performance. Furthermore, buildings located in the higher seismicity zone are more vulnerable, since the increase of their lateral resistance and ductility capacity is disproportional to the increase in seismic demand. © Imperial College Press.	en
heal.publisher	IMPERIAL COLLEGE PRESS	en
heal.journalName	Journal of Earthquake Engineering	en
dc.identifier.doi	10.1142/S1363246906002657	en
dc.identifier.isi	ISI:000238808200006	en
dc.identifier.volume	10	en
dc.identifier.issue	3	en
dc.identifier.spage	429	en
dc.identifier.epage	452	en