Seismic design of RC structures: A critical assessment in the framework of multi-objective optimization

Lagaros, ND; Papadrakakis, M

dc.contributor.author	Lagaros, ND	en
dc.contributor.author	Papadrakakis, M	en
dc.date.accessioned	2014-03-01T01:27:14Z
dc.date.available	2014-03-01T01:27:14Z
dc.date.issued	2007	en
dc.identifier.issn	0098-8847	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18349
dc.subject	Limit-state fragility	en
dc.subject	Multi-objective optimization	en
dc.subject	Performance-based design	en
dc.subject	Prescriptive design procedures	en
dc.subject	Reinforced-concrete buildings	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Engineering, Geological	en
dc.subject.other	Concrete buildings	en
dc.subject.other	Optimization	en
dc.subject.other	Reinforced concrete	en
dc.subject.other	Seismic response	en
dc.subject.other	Structural dynamics	en
dc.subject.other	Multi-objective optimization	en
dc.subject.other	Performance-based design	en
dc.subject.other	Reinforced-concrete buildings	en
dc.subject.other	Seismic design	en
dc.subject.other	building code	en
dc.subject.other	building construction	en
dc.subject.other	concrete structure	en
dc.subject.other	hazard assessment	en
dc.subject.other	optimization	en
dc.subject.other	reinforced concrete	en
dc.subject.other	seismic design	en
dc.subject.other	seismic response	en
dc.subject.other	structural response	en
dc.title	Seismic design of RC structures: A critical assessment in the framework of multi-objective optimization	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/eqe.707	en
heal.identifier.secondary	http://dx.doi.org/10.1002/eqe.707	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	The assessment of seismic design codes has been the subject of intensive research work in an effort to reveal weak points that originated from the limitations in predicting with acceptable precision the response of the structures under moderate or severe earthquakes. The objective of this work is to evaluate the European seismic design code, i.e. the Eurocode 8 (EC8), when used for the design of 3D reinforced concrete buildings, versus a performance-based design (PBD) procedure, in the framework of a multi-objective optimization concept. The initial construction cost and the maximum interstorey drift for the 10/50 hazard level are the two objectives considered for the formulation of the multi-objective optimization problem. The solution of such optimization problems is represented by the Pareto front curve which is the geometric locus of all Pareto optimum solutions. Limit-state fragility curves for selected designs, taken from the Pareto front curves of the EC8 and PBD formulations, are developed for assessing the two seismic design procedures. Through this comparison it was found that a linear analysis in conjunction with the behaviour factor q of EC8 cannot capture the nonlinear behaviour of an RC structure. Consequently the corrected EC8 Pareto front curve, using the nonlinear static procedure, differs significantly with regard to the corresponding Pareto front obtained according to EC8. Furthermore, similar designs, with respect to the initial construction cost, obtained through the EC8 and PBD formulations were found to exhibit different maximum interstorey drift and limit-state fragility curves. Copyright (c) 2007 John Wiley & Sons, Ltd.	en
heal.publisher	JOHN WILEY & SONS LTD	en
heal.journalName	Earthquake Engineering and Structural Dynamics	en
dc.identifier.doi	10.1002/eqe.707	en
dc.identifier.isi	ISI:000249624700002	en
dc.identifier.volume	36	en
dc.identifier.issue	12	en
dc.identifier.spage	1623	en
dc.identifier.epage	1639	en