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Title: Simplified models for assessment and optimal redesign of irregular planar frames
Author: Varum, H.
Pinto, A. V.
Costa, A.
Vila Real, P.
Keywords: Existing RC buildings
Seismic retrofitting
Performance-based redesign
Simplified assessment methods
Optimum strengthening
Issue Date: 2012
Publisher: Elsevier
Abstract: This paper presents a simplified methodology for predicting the response of buildings irregular in elevation, based on the non-linear dynamic multi-modal spectral seismic response of an equivalent simplified MDOF linear system. Making use of the MDOF model, it is also proposed a methodology for the optimum strengthening design of buildings, based on convex approximation methods. Three structural upgrading optimization problems (SUOPs) are implemented. The proposed models are validated against the results of a series of PsD tests carried out on a full-scale four-storey RC structure, representative of the construction practice in southern Mediterranean countries in Europe until the late 1960s.
Peer review: yes
DOI: 10.1016/j.engstruct.2012.04.033
ISSN: 0141-0296
Appears in Collections:DECivil - Artigos

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