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总结了美、欧等国有关钢筋轴向编排距离对方形钢筋混凝土柱承载能力的影响的研究现状，采用有限元方法将混凝土划分成三维砖块单元，钢筋划分成杆单元，利用单元粘贴技术形成了完整的钢筋混凝土有限元分析模型。经过有限元计算，提出了“期望标准应力”，定义了“有效限定应力因子”、“平均有效限定应力”和“平均限定因子”的概念。分析了五种钢筋轴向编排距离对钢筋混凝土柱承载能力的影响，给出了直观图形描述和平均限定因子的回归方程。
The research status of the influence of axial distance of steel bars on the bearing capacity of square reinforced concrete columns is summarized. The finite element method is used to divide the concrete into three-dimensional brick units, the steel bar is divided into rod units, and the unit paste technology is used. A complete reinforced concrete finite element analysis model. After the finite element calculation, “expected standard stress” was proposed, and the concepts of “effectively defined stress factor”, “average effective limited stress”, and “average limiting factor” were defined. The influence of the axial distance of five kinds of steel bars on the bearing capacity of reinforced concrete columns was analyzed. The regression equations of intuitive graphical description and average limit factors were given.