In this paper , considering the additional bending moments of the axial load about the lateral displacements ( i . e . the second - order effect ) , an iterative computer analysis procedure is proposed to predict the load - deformation relations and ultimate loads of steel - concrete composite columns of arbitrary cross section 本文考慮長柱在軸向荷載作用下的附加彎矩影響(二階效應(yīng)) ,提出了一種適用于任意截面形式鋼-砼組合長柱的荷載-變形關(guān)系分析和極限承載力分析的數(shù)值迭代計(jì)算機(jī)方法。