Duration : 25.09.2007 – 25.09.2011
Supervisor : Professor Eugen Brühwiler
PhD student : Talayeh Nosiravani
How do UHPFRC-RC composite members behave when subjected to combined bending and shear ? What is the shear capacity of these members when the reinforced UHPFRC overlay acts as a tensile flexural reinforcement ?
An experimental investigation was carried out and provided evidence that the reinforced UHPFRC overlay can increase a composite member shear capacity by twice that of the RC element alone and can maintain the same level of deformability as the RC element. Composite members with a flexural shear failure have a higher pre- and post-peak resistance than the RC elements. The research aims to develop a physical model describing the fracture of composite members subjected to combined bending and shear. The model is intended to evaluate the shear capacity and the deformability of the UHPFRC-RC members. Such a model provides a tool for the ultimate limit state analysis and design when UHPFRC is used as an additional external tensile reinforcement on RC members.
Publications
Noshiravani,T. and Brühwiler, E. (2010) Behaviour of UHPFRC-RC composite beams subjected to combined bending and shear, Proceedings of the 8th fib Int. PhD Symposium in Civil Eng., June 20-23. Kgs. Lyngby, Denmark: DTU Byg.
Noshiravani,T. and Brühwiler, E. (2009) Comportement des éléments composés de béton armé et BFUP sous les effets combinés de flexion et cisaillement, Actes de la 10ème Journées Scientifiques (RF)2B, 2-3 juillet. Cachan, France: ENSC.