Large-scale testing of 3-D steel frame accounting for local buckling

Abstract The ultimate strength testing of space steel frame accounting for local buckling was performed. Considering a majority of large-scale frame tests in the past, only two-dimensional frames or three-dimensional frames comprised of compact section are experimentally studied. Therefore, three-dimensional experiments accounting for local buckling are needed to extend the knowledge of this field. Three two-story, single-bay, and sway allowed frames consisting of non-compact section subjected to proportional vertical and horizontal loads were tested. The details of the test frames, test instruments, and test procedures are presented. The load–displacement curves of the test frames are provided. The experiment results are useful for verification of the three-dimensional analytical models. It was observed that the load carrying capacities calculated by the AISC-LRFD method were 13–21% conservative when compared with those of the experiment. This difference is attributed to the fact that the AISC-LRFD approach does not consider the inelastic moment redistribution but the experiment includes the inelastic redistribution effect.

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