In this paper, in order to further study the mechanical behavior of T-shaped stiffened concrete-filled steel tubular (CFST) columns, numerical programs of eccentrically compressive T-shaped stiffened CFST columns were developed to calculate moment M-ϕ curvature curves of cross section and column. The calculated curves with the numerical programs agree well with the experimental results. A parametric analysis was carried out to calculate M-N correlation curves of cross section and column to investigate influence of concrete strength f_ck, steel yielding strength f_y, steel tube thickness t, slenderness ratio λ, and loading angle θ. On the basis of parametric analysis, simplified resistance models of T-shaped CFST section and column were proposed and verified by the numerical analysis results. The simplified resistance models are reliable to predict the mechanical behavior for engineering application.

中文翻译：

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T形加劲钢管柱承受偏心压缩载荷的承载力研究

为了进一步研究T型刚肋钢管混凝土柱的力学性能，开发了偏心受压T型刚钢管柱的数值程序，计算了弯矩的M - ϕ曲率曲线。部分和专栏。用数值程序计算出的曲线与实验结果吻合良好。通过参数分析计算出截面和柱的M - N相关曲线，以研究混凝土强度f _ck，钢管屈服强度f _y，钢管厚度t，长细比λ的影响。和加载角θ。在参数分析的基础上，提出了简化的T形钢管混凝土截面和柱阻力模型，并通过数值分析结果进行了验证。简化的电阻模型可可靠地预测工程应用的机械性能。