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Structural Engineering and Mechanics Volume 36, Number 1, September10 2010 , pages 57-78 DOI: https://doi.org/10.12989/sem.2010.36.1.057 |
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A reinforced concrete frame element with shear effect |
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Hamid R. Valipour and Stephen J. Foster
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| Abstract | ||
| A novel flexibility-based 1D element that captures the material nonlinearity and second order P- effects within a reinforced concrete frame member is developed. The formulation is developed for 2D planar frames in the modified fiber element framework but can readily be extended to 3D cases. The nonlinear behavior of concrete including cracking and crushing is taken into account through a modified hypo-elastic model. A parabolic and a constant shear stress distribution are used at section level to couple the normal and tangential tractions at material level. The lack of objectivity due to softening of concrete is addressed and objectivity of the response at the material level is attained by using a technique derived from the crack band approach. Finally the efficiency and accuracy of the formulation is compared with experimental results and is demonstrated by some numerical examples. | ||
| Key Words | ||
| flexibility; framed structures; objectivity; P- effects; reinforced concrete; shear. | ||
| Address | ||
| Hamid R. Valipour: School of Civil and Environmental Engineering, University of Technology, Sydney, NSW 2007, Australia Stephen J. Foster: School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia | ||