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Structural Engineering and Mechanics Volume 27, Number 3, October20 2007 , pages 293-310 DOI: https://doi.org/10.12989/sem.2007.27.3.293 |
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Exact buckling load of a restrained RC column |
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Nana Krauberger, Miran Saje, Igor Planinc and Sebastjan Bratina
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| Abstract | ||
| Theoretical foundation for the buckling load determination in reinforced concrete columns is described and analytical solutions for buckling loads of the Euler-type straight reinforced concrete columns given. The buckling analysis of the limited set of restrained reinforced concrete columns is also included, and some conclusions regarding effects of material non-linearity and restrain stiffnesses on the buckling loads and the buckling lengths are presented. It is shown that the material non-inearity has a substantial effect on the buckling load of the restrained reinforced concrete columns. By contrast, the steel/concrete area ratio and the layout of reinforcing bars are less important. The influence on the effective buckling length is small. | ||
| Key Words | ||
| reinforced concrete; restrained column; stability; buckling load. | ||
| Address | ||
| Nana Krauberger: Vegrad, d.d., Staritrg 35, 3320 Velenje, Slovenia Miran Saje,Igor Planinc and Sebastjan Bratina: University of Ljubljana, Faculty of Civil and Geodetic Engineering, Jamova 2, SI-1115 Ljubljana, Slovenia | ||