Utilize este identificador para referenciar este registo: http://hdl.handle.net/10362/6041
Título: Robustness of corroded reinforced concrete structures. A structural performance approach
Autor: Cavaco, Eduardo S.
Casas, Joan R.
Neves, Luis Canhoto
Huespe, Alfredo E.
Palavras-chave: Robustness
Vulnerability
Damage
Structural performance
Reliability
Corrosion
Data: 23-Set-2010
Editora: Taylor & Francis
Citação: Cavaco, E. S., Casas, J. R., Neves, L. A. C., & Huespe, A. E. (2011). Robustness of corroded reinforced concrete structures – a structural performance approach. Structure and Infrastructure Engineering, 1-17. doi:doi: 10.1080/15732479.2010.515597
Resumo: The aim of this work is to provide new contributions in order to define more accurately the structural robustness concept, particularly when applied to corroded reinforced concrete (RC) structures. To fulfill such task, several robustness indicators are analyzed and discussed with special emphasis on structural performance based measures. A new robustness definition and a framework to assess it are then proposed, based on the structural performance lost after damage occurrence. The competence of the proposed methodology is then tested comparing the robustness of two reinforced concrete foot bridges under corrosion. The damage considered is the longitudinal reinforcement corrosion level and load carrying capacity is the structural performance evaluated. In order to analyze corrosion effects, a finite element based on a two step analysis is adopted. In the first step a cross section analysis is performed to capture phenomenons such as expansion of the reinforcement due to the corrosion products accumulation; damage and cracking in the reinforcement surrounding concrete; steel-concrete bond strength degradation; and effective reinforcement area reduction. The results obtained are then used to build a 2D structural model, in order to assess the maximum load carrying capacity of the corroded structure. For each foot bridge, robustness is assessed using the proposed methodology.
Descrição: Structure and Infrastructure Engineering, 1-17
URI: http://hdl.handle.net/10362/6041
ISSN: 1573-2479
Aparece nas colecções:FCT: DEC - Artigos em revista internacional com arbitragem científica

Ficheiros deste registo:
Ficheiro Descrição TamanhoFormato 
DMRCRCS para repositorio.pdf2,1 MBAdobe PDFVer/Abrir


FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Degois 

Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.