A thorough testing and numerical modelling programme has been conducted to investigate the minor-axis flexural buckling behaviour and resistances of pin-ended hot-rolled stainless steel channel section columns. The testing programme included material coupon tests, membrane residual stress measurements, initial global and local geometric imperfection measurements and ten pin-ended channel section column tests about the minor principal axis. A membrane residual stress predictive model was developed based on the measured data. The testing programme was followed by a numerical modelling programme; finite element models were developed to simulate the test results and then adopted to perform parametric studies to generate further numerical data on hot-rolled stainless steel channel section columns over a wide range of cross-section dimensions and member effective lengths. The obtained test and numerical data were then adopted to assess the accuracy of relevant design rules for hot-rolled stainless steel channel section columns failing by flexural buckling about the minor principal axis, as given in the European code and American design guide. The assessment results revealed that (i) the European code yields many unsafe flexural buckling resistance predictions and (ii) the American design guide yields overly conservative and scattered flexural buckling resistance predictions. Finally, a revised Eurocode buckling curve was proposed and shown to offer accurate, consistent and safe-sided flexural buckling resistance predictions for hot-rolled stainless steel channel section columns over the whole considered range of member non-dimensional slendernesses. The reliability of the revised Eurocode buckling curve was also confirmed using statistical analyses based on EN 1990.

进行了彻底的测试和数值建模程序，以研究销端热轧不锈钢槽钢截面柱的短轴弯曲屈曲行为和阻力。该测试程序包括材料试样测试，膜残余应力测量，初始整体和局部几何缺陷测量以及十个围绕短主轴的端部固定式通道截面柱测试。基于测得的数据，开发了膜残余应力预测模型。测试程序之后是数值建模程序；开发了有限元模型来模拟测试结果，然后将其用于进行参数研究，以在更宽的横截面尺寸和构件有效长度范围内的热轧不锈钢槽型柱上生成进一步的数值数据。然后，根据欧洲规范和美国设计指南中的规定，通过获得的测试和数值数据来评估有关热轧不锈钢槽钢截面设计准则的准确性，这些设计准则由于绕短主轴弯曲屈曲而失效。评估结果表明，（i）欧洲规范得出许多不安全的挠曲屈曲阻力预测，并且（ii）美国设计指南得出了过于保守和分散的挠曲屈曲阻力预测。最后，提出了修改后的Eurocode屈曲曲线，该曲线显示出在整个考虑的构件无尺寸细长度范围内，可为热轧不锈钢槽型柱提供准确，一致和安全侧的抗弯屈曲预测。使用基于EN 1990的统计分析也证实了修订后的Eurocode屈曲曲线的可靠性。