Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/21513
Título: | A design model for fibre reinforced concrete beams pre-stressed with steel and FRP bars |
Autor(es): | Barros, Joaquim A. O. Taheri, Mahsa Salehian, Hamidreza Mendes, Pedro J. D. |
Palavras-chave: | Fibre reinforced concrete Strain hardening Flexural reinforcement Pre-stressed steel bars Pre-stressed FRP bars Strain softening |
Data: | 2012 |
Editora: | Elsevier 1 |
Revista: | Composite Structures |
Resumo(s): | This paper presents a design oriented model to determine the moment-curvature relationship of elements of rectangular cross section failing in bending, made by strain softening or strain hardening fibre reinforced concrete (FRC) and reinforced with perfectly bonded pre-stressed steel and fibre reinforced polymeric (FRP) bars. Since FRP bars are not affected by corrosion, they have the minimum FRC cover thickness that guaranty proper bond conditions, while steel bars are positioned with a thicker FRC cover to increase their protection against corrosion. Using the moment-curvature relationship predicted by the model in an algorithm based on the virtual work method, a numerical strategy is adopted to evaluate the load-deflection response of statically determinate beams. The predictive performance of the proposed formulation is assessed by simulating the response of available experimental results. By using this model, a parametric study is carried out in order to evaluate the influence of the main parameters that characterize the post cracking behaviour of FRC, and the prestress level applied to FRP and steel bars, on the moment-curvature and load-deflection responses of this type of structural elements. Finally the shear resistance of this structural system is predicted |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/21513 |
DOI: | 10.1016/j.compstruct.2012.03.007 |
ISSN: | 0263-8223 |
Versão da editora: | http://www.sciencedirect.com/ |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | ISISE - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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IJ(ISI)_58.pdf | 1,16 MB | Adobe PDF | Ver/Abrir |