A seismic optimization procedure for reinforced concrete framed buildings based on eigenfrequency optimization. Issue 7 (3rd July 2017)

• Record Type: Journal Article
• Authors: Arroyo, Orlando; Gutiérrez, Sergio
• Is Part Of: Engineering optimization. Volume 49:Issue 7(2017)
• Page Start: 1166
• Page End: 1182
• Publication Date: 2017-07-03
• Subjects: Eigenfrequency optimization -- homogenization -- structural optimization -- reinforced concrete moment frames -- nonlinear time history analysis -- genetic algorithms; Engineering design -- Periodicals; Mathematical optimization -- Periodicals; 620.0042
• DOI: 10.1080/0305215X.2016.1241779
• Languages: English
• ISSNs: 0305-215X

Abstract

ABSTRACT: Several seismic optimization methods have been proposed to improve the performance of reinforced concrete framed (RCF) buildings; however, they have not been widely adopted among practising engineers because they require complex nonlinear models and are computationally expensive. This article presents a procedure to improve the seismic performance of RCF buildings based on eigenfrequency optimization, which is effective, simple to implement and efficient. The method is used to optimize a 10-storey regular building, and its effectiveness is demonstrated by nonlinear time history analyses, which show important reductions in storey drifts and lateral displacements compared to a non-optimized building. A second example for an irregular six-storey building demonstrates that the method provides benefits to a wide range of RCF structures and supports the applicability of the proposed method.