RESEARCH ARTICLE


Assessment of the Design Criteria for Concentric V-Braced Steel Structures According to Italian and European Codes



Beatrice Faggiano*, Antonio Formisano, Luigi Fiorino, Carmine Castaldo, Vincenzo Macillo, Federico M. Mazzolani
Department of Structures for Engineering and Architecture, University of Naples “Federico II”, Naples, Italy


Article Metrics

CrossRef Citations:
8
Total Statistics:

Full-Text HTML Views: 713
Abstract HTML Views: 280
PDF Downloads: 224
ePub Downloads: 183
Total Views/Downloads: 1400
Unique Statistics:

Full-Text HTML Views: 448
Abstract HTML Views: 195
PDF Downloads: 187
ePub Downloads: 156
Total Views/Downloads: 986



Creative Commons License
© 2017 Faggiano et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Department of Structures for Engineering and Architecture, University of Naples “Federico II”, Naples, Italy; Fax: 0039 0815934792; Tel: 0039 0817682447; E-mail: faggiano@unina.it


Abstract

The critical review of design methodologies provided by the NTC2008, in agreement with the European seismic code (Eurocode 8) for steel Concentrically Braced Frames with chevron (or inverted V) diagonals (CBF-V), carried out by deepening the seismic behaviour of such typical steel seismic resistant structures, aims to provide more efficient design criteria able to ensure adequate safety levels under seism.

As reference case studies, common structural configurations of CBF-V are designed according to the NTC2008 provisions. Each case study is designed through both the Linear Static (LS) and Dynamic (LD) analysis. For braces either Circular Hollow Sections (CHS) or HE profiles are used. General critical issues have been evidenced in the design process. The seismic performance of investigated structures is evaluated by non-linear static analyses, in order to appraise the most relevant behavioural issues, like the behaviour factor, the failure modes and the effectiveness of the capacity design criteria. A discussion on the obtained results has allowed to point out the pros and cons of the current design approach.

Keywords: Seismic resistant steel structures, Seismic design criteria, Concentrically V-braced frames, Behaviour factor, Overstrength factor, Non-linear static analyses.