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基于全过程分析结果得到的钢管混凝土纯弯构件弯矩—曲率 (M—Φ)关系 ,给出了弹性、弹塑性和强化三阶段的组合抗弯刚度的计算公式 ,并研究了含钢率、钢材强度和混凝土等级对组合抗弯刚度的影响 .结果表明 :这三种因素对钢管混凝土组合抗弯弹性模量与相应钢材弹性模量比值的影响大体呈线性规律 ,其中含钢率的影响最为显著
Based on the analysis of the whole process, the bending moment-curvature (M-Φ) relationship of pure-filled concrete-filled steel tubular members is obtained. The formulas of elastic, elasto- The results show that the influence of these three factors on the ratio of flexural elastic modulus of CFST to the ratio of corresponding elastic modulus of steel is linear, and the influence of steel content is the most significant Significant