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以长细比为主要参数,测试了6个两端铰支的H形截面6061-T6铝合金挤压型材轴压构件的稳定承载力,所有试件均在强轴平面内发生了整体弯曲屈曲,得到了实测稳定系数.同时进行了铝合金材料的性能测试,获得了材性数据.建立了有限元分析模型,并经由试验结果的验证.进行了参数分析,并据此建议了新的柱子曲线.将GB50429、EN1999和建议的柱子曲线与参数分析结果和国内现有试验数据分别进行了比较,发现这两部规范的计算结果很接近且均过于保守,而建议的柱子曲线与参数分析和试验结果均吻合最好且总体偏于安全,可供工程应用和规范修订参考.
With the slenderness ratio as the main parameter, the stability bearing capacity of six axial-supported 6061-T6 aluminum alloy extruded sections with six H-sections at both ends was tested. All the specimens were subjected to total bending buckling in the plane of the strong axis , The measured stability coefficient was obtained.At the same time, the properties of the aluminum alloy were tested and the material data were obtained.The finite element analysis model was established and validated by the test results.The parameter analysis was carried out and the new column The curves of GB50429, EN1999 and the proposed pillars are compared respectively with the results of parameter analysis and the existing test data in China, and the calculated results of these two codes are very close and both are too conservative. However, the proposed pillars curve and parameter analysis The test results are in line with the best and generally biased in safety, for engineering applications and specifications for reference.