DISTORTIONAL BUCKLING TESTS ON STEEL I-BEAMS

摘要

Distortional buckling of steel I-beams has extensively been investigated by researchers. This phenomenon has mostly been treated theoretically and little experimental work has been reported in the open literature, in this respect. Here, in addition to the experimental verification of web distortion through proper measurements made with the aim of revelation of any possible distortion while lateral buckling, comparison has also been made between the test loads and predictions of the so-called Southwell, Modified, and Massey extrapolation techniques, and the agreement between the test and extrapolated loads is shown to be good. Moreover, code predictions of the Australian AS4 100 have been compared with the experimental results and conclusions are drawn regarding their accuracy.