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Evaluating design standards for lateral-torsional buckling

Updated: May 7, 2020

Dimple Ji (M.Sc.)

Dr. Driver, Dr. Imanpour

The lateral-torsional buckling design provisions were developed decades ago and, since then, welding and fabrication processes have changed significantly. This leads to concerns that the existing standards may not encapsulate the true behaviour of modern welded girders. The complexity of performing lateral-torsional buckling tests has also resulted in a severe lack of recent experimental test data. An improved understanding of lateral-torsional buckling is important for steel designers, fabricators, and erectors alike as it allows for effective and competitive designs that do not compromise safety. In response to these identified concerns, the proposed research involves conducting a series of large-scale physical tests on modern welded sections. The results of the test will be used to evaluate and improve, if necessary, the existing lateral-torsional buckling provisions for welded girders. The result is a more rigorous standard for practicing engineers, which creates greater confidence in design.

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