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Structural Engineering and Mechanics Volume 2, Number 1, March 1994 , pages 113-123 DOI: https://doi.org/10.12989/sem.1994.2.1.113 |
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Buckling of post-tensioned composite beams |
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M.A. Bradford
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| Abstract | ||
| A method for computing the elastic buckling prestressing force of a post-tensioned composite steel-concrete tee-beam is presented. The method is based on a virtual work formulation, and incorporates the restraint provided by the concrete slab to the buckling displacements of the steel beam. The distortional buckling solutions are shown to be given by a quadratic equation. The application of the analysis to calculation buckling strengths is given, based on codified rules for beam-columns. Conclusions are then drawn on the importance of distortional buckling when a post-tensioned composite beam is stressed during jacking. | ||
| Key Words | ||
| buckling; composite beams; distortion; post-tensioning; prestressing. | ||
| Address | ||
| Department of Structural Engineering, The University of New South Wales, Kensington, Australia | ||