Seismic risk assessment of cold-formed steel shear wall systems

• Tipo: Artigo em Revista Científica Internacional
• Data: 2017

Autores

Kechidi, S (Autor) Outra; Macedo, L (Autor) Outra; J. M. Castro (Autor) FEUP; Bourahla, N (Autor) Outra

Revista

Título: Journal of Constructional Steel Research

Vol. 138

Páginas: 565-579

ISSN: 0143-974X

Editora: Elsevier

Indexação

ISI Web of Knowledge - 14 Citações

Scopus - 19 Citações

Outras Informações

ID Authenticus: P-00M-XMZ

DOI: 10.1016/j.jcsr.2017.08.011

Abstract (EN): This paper presents the probabilistic seismic performance and risk assessment of cold-formed steel (CFS) sheathed shear wall panel (SWP) structures adopting conventional steel moment-resisting frame (MRF) systems as a benchmark with the aim of exploring the viability of using CFS-SWP as a new structural solution in seismic prone regions. A set of 12 building structures of both systems, with 2-, 4- and 5-storey, have been designed for two seismic intensity levels. To simulate their nonlinear behaviour, the structures were modelled adopting recently developed deteriorating hysteresis models. Based on probabilistic seismic hazard analyses (PSHA), a site-specific selection of ground motion records for Incremental Dynamic Analyses (IDA) has been carried out adopting the Conditional Mean Spectrum (CMS) as a more realistic target response spectrum. Subsequently, the seismic risk was evaluated over the structure lifetime (i.e., 50 years) in terms of the annual probability of exceeding the Damage Limitation, No-Local Collapse and Near Collapse limit states. The importance and usefulness of the risk metrics are highlighted and adopted as an indicator to explore the behavioural features of both structural systems. Overall, the assessment procedure showed that both systems present an acceptable seismic performance and therefore the CFS-SWP can be seen as a reliable structural solution to achieve performance based objectives in seismic regions.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 15