Structural Engineering and Mechanics

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Buckling of post-tensioned composite beams

  • Bradford, M.A. (Department of Structural Engineering, The University of New South Wales)
  • Published : 1994.03.25
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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.

Keywords

References

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Cited by

  1. Static Flexural Behaviour of Externally Post-Tensioned Steel-Concrete Composite Beams vol.7, pp.1, 2004, https://doi.org/10.1260/136943304322985729
  2. Behavior of a Continuous Composite Box Girder with a Prefabricated Prestressed-Concrete Slab in Its Hogging-Moment Region vol.20, pp.8, 2015, https://doi.org/10.1061/(ASCE)BE.1943-5592.0000698
  3. Progress in the methods of analysis of restricted distortional buckling of composite bridge girders vol.3, pp.2, 2001, https://doi.org/10.1002/pse.80
  4. Generalized Elastic Buckling of Restrained I-Beams by FEM vol.123, pp.12, 1997, https://doi.org/10.1061/(ASCE)0733-9445(1997)123:12(1631)
  5. Time dependent service load behaviour of prestressed composite tee beams vol.5, pp.3, 1997, https://doi.org/10.12989/sem.1997.5.3.307