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Arroyo O. (2017)

A seismic optimization procedure for reinforced concrete framed buildings based on eigenfrequency optimization

Engineering Optimization,

Tipo de publicación: ISI UC , Publicaciones
Departamento: Ingeniería Estructural y Geotécnica

Palabras clave: Eigenfrequency optimization , genetic algorithms , Homogenization , Nonlinear time history analysis , Reinforced concrete moment frames , Structural optimization Ver publicación

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.