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中文摘要：
当方中空夹层钢管混凝土用于结构柱时,除承受轴力和弯矩外,还将承担风荷载和地震荷载作用下产生的扭矩,同样对于采用平腹杆双肢柱的排架角柱,也会受到轴力、弯矩和扭矩的共同作用,因此有必要计算方中空夹层钢管混凝土压弯扭构件的承载力。采用方实心钢管混凝土压弯扭构件承载力相关方程的形式,对方中空夹层钢管混凝土压弯扭构件进行计算,公式中轴压强度承载力、抗弯承载力、抗扭承载力均采用方中空夹层钢管混凝土计算方法,计算结果偏于保守,可为工程设计提供参考。
英文摘要：
In engineering practice,the concrete-filled double-skin square steel tubular columns subjected to not only axial force and moment,but also torsion action caused by wind and seismic loads. It was the same loading condition for the bent＇s corner columns. It was therefore necessary to calculate the load carrying capacity of the concrete-filled double-skin square steel tubular columns under combined compression-bending-torsions. In this paper,the correlation equation was applied for calculation and the axial load capacity,moment capacity and torsion capacity were directly cited from the single test. The calculation results were found to be conservative,and which can provide a reference for engineering practice.
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