矩形断面を持つ鋼柱模型(SM490)の高温時の座屈強度

概要

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An experimental study was performed to predict the effects of high temperature and creep strain on the buckling strength of steel columns at high temperature. In order to satisfy the purpose of this study, two kinds of experiments, (1)tests at constant high temperature and (2)tests at increasing high temperature under constant axial load were performed using the steel columns (SM490 J1S grade) with rectangular cross-section. In the tests at constant high temperature, the buckling strength at constant high temperature of SM490 steel column was clarified. The experimental result at constant high temperature and the computed result based on the nonlinear buckling theory showed good agreement. The results of two kinds of buckling tests were compared on a chart of buckling curves mutually, and the effect of creep strain on the buckling strength of steel column at increasing high temperature was evaluated.
1999-01-30