Aluminum alloy circular hollow section beam-columns
Aluminum alloy circular hollow section beam-columns
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DOI：
10.1016/j.tws.2006.02.006
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发表时间：
2006-02
影响因子：
6.4
通讯作者：
Ji-hua Zhu;B. Young
中科院分区：
文献类型：
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作者：
Ji-hua Zhu;B. Young
对铝合金圆空心截面进行了轴压和弯曲联合作用下的试验研究。试验程序包括四个系列的梁柱试验和纯弯曲试验。试验试样采用6061-T6热处理铝合金挤压成形。在不同偏心距处对梁柱试件进行压缩，得到了每组试验的相互作用曲线。梁柱试件长度为500或1000mm。每个试验系列都进行了纯弯曲试验，以确定试件的弯曲能力。测量了试样的整体初始几何缺陷。材料性能是通过拉伸试验获得的。梁柱试验观察到的破坏模式包括弯曲屈曲和热影响区材料屈服。并将试验强度与采用美国、澳大利亚/新西兰和欧洲铝结构规范得到的设计强度进行了比较。绘制了每个试验系列的轴向载荷与弯矩相互作用曲线。结果表明，三种规范预测的梁柱设计强度和抗弯能力总体上是保守的。
An experimental investigation was performed on aluminum alloy circular hollow sections in combined axial compression and bending. The test program consists of four series of beam-column tests as well as pure bending tests. The test specimens were fabricated by extrusion using 6061-T6 heat-treated aluminum alloy. The beam-column specimens were compressed between pined ends at different eccentricities in order to obtain an interaction curve for each series of test. The lengths of the beam-column specimens were either 500 or 1000mm. Pure bending tests were conducted for each test series to determine the bending capacities of the specimens. Overall initial geometric imperfections of the specimens were measured. Material properties were obtained from tensile coupon tests. The observed failure modes of the beam-column tests included flexural buckling and material yielding in the heat-affected zone. A comparison of the test strengths with the design strengths obtained using the American, Australian/New Zealand and European specifications for aluminum structures has been presented. Axial load versus moment interaction curves were plotted for each test series. It is shown that the bending capacities and beam-column design strengths predicted by the three specifications are generally conservative.