C. Cakiroglu, G. B. Bekdaş

Lateral torsional buckling and shear buckling are two of the most important structural behaviors that should be assiduously analyzed. One of the most recent incidents where lateral-torsional buckling was initiated due to insufficient bracing of plate girders was observed in Edmonton, Alberta, Canada during the replacement of bridge girders. The main goal of the current study is to acquire information about the effects of additional parameters such as the warping constant and the St. Venant’s torsion constant on the lateral-torsional buckling load and the ultimate shear strength. To this end, the critical buckling moment and ultimate shear strength of a plate girder are optimized by changing various cross-sectional parameters. The results of this study clarify the effects of the warping constant and St. Venant’s torsion constant on the structural performance of a plate girder. The visualization of the results was used to identify the ranges of these geometric parameters most favorable to the structural performance. The optimization of the cross-sectional dimensions was carried out using novel meta-heuristic optimization algorithms such as the harmony search algorithm.

Keywords: Optimization, harmony search, lateral torsional buckling, tension field theory


FD2 Location
June 11, 2021  2:45 PM
2 - LV Kantorovich

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