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Design of FRC tunnel segments considering the ductility requirements of the Model Code 2010
Liao, Lin; Fuente Antequera, Albert de la; Pialarissi Cavalaro, Sergio Henrique; Aguado de Cea, Antonio
Universitat Politècnica de Catalunya. Departament d'Enginyeria de la Construcció; Universitat Politècnica de Catalunya. TE - Tecnologia d'Estructures
Fibre reinforced concrete (FRC) is used to improve the mechanical response of precast segments for tunnels. The structural use of the material has been regulated by national codes and, recently, by the Model Code 2010 (MC 2010, hereinafter). In this regard, it is necessary to update the philosophy applied to the design of tunnel segments in compliance with the most recent guidelines, evaluating their applicability and repercussion. The objective of this paper is to present a critical analysis of the design of FRC segments according to the ductility requirements from the MC 2010; an alternative approach is proposed that is compatible with the condition found in some tunnels. The repercussions of both approaches are evaluated for the Metro Line 9 from Barcelona using results obtained in an experimental program with fullscale segments. The study suggests that the alternative approach may be applied under certain conditions, leading to a reduction in the fibre consumption.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
Fiber-reinforced concrete--Testing
Tunnels--Design and construction
Barcelona metro line
Cracking bending moment
Design
Ductility
FRC
Precast segments
Formigó armat -- Normes
Túnels -- Construcció -- Catalunya -- Barcelona
info:eu-repo/semantics/submittedVersion
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