Techno Press
Techno Press

Structural Engineering and Mechanics
  Volume 27, Number 3, October20 2007 , pages 293-310
DOI: https://doi.org/10.12989/sem.2007.27.3.293
 


Exact buckling load of a restrained RC column
Nana Krauberger, Miran Saje, Igor Planinc and Sebastjan Bratina

 
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
 

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