多角形断面鋼柱の局部座屈に関する実験的研究

抄録

Thin-walled hollow steel columns with box or circular sections have been popularly used hitherto. In recent years, polygonal section columns have been increasingly used for point of aesthetic reasons, especially in cities or in the suburbs of cities. However, few studies have been reported on the stability of steel polygonal section columns.
The purpose of this paper is to experimentally investigate local buckling strength of cold-formed steel polygonal section columns with rectangular, pentagonal, hexagonal, heptagonal and octagonal sections. Based on the tests, an empirical design formula is presented to predict the local buckling strength of steel polygonal section columns.