Donadeo Innovation Centre for Engineering

University of Alberta

Edmonton, AB, Canada

Steel Centre Research

Residual stresses in welded girders


Daniel Unsworth (M.Sc.)

Lateral–torsional buckling provisions in structural steel design standards were developed using assumptions about residual stresses consistent with fabrication procedures from decades ago. Due to considerably greater control during modern shop welding operations, a re-examination of these provisions is appropriate for welded bridge girders. In order to better understand the stability behaviour of welded wide-flange girders, Daniel will use numerical modelling along with detailed residual stress measurements from actual bridge girders to assess the ability of current design procedures to predict inelastic lateral–torsional buckling behaviour accurately. The project is sponsored by Supreme Steel and NSERC.





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