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目的研究负载下外包钢筋混凝土加固轴心受压钢柱的承载力计算方法.方法通过叠加法和极限平衡法,研究负载下外包钢筋混凝土加固轴心受压钢柱的承载力计算方法,并与试验结果进行对比分析.结果提出了综合考虑初始轴压比、外包混凝土强度等级以及箍筋约束作用的负载下外包钢筋混凝土加固轴心受压钢柱的承载力计算公式,通过将公式所得的计算结果与试验结果进行对比分析,发现运用此计算公式计算得到的极限承载力与试验结果比的平均值为0.941 5,平均误差为5.86%.结论根据试验结果与笔者所给公式的计算结果吻合良好,证明了该公式的正确性,并且此公式具有较好的安全储备,可用于指导实际工程.
Aim To study the calculation method of bearing capacity of axially loaded steel columns strengthened by outsourcing reinforced concrete under loading conditions.Methods The calculation method of bearing capacity of axially loaded steel columns strengthened by outsourcing reinforced concrete under load was studied by means of superposition method and limit equilibrium method, The results of which are compared and analyzed.Results The formula for calculating the bearing capacity of axially loaded steel columns strengthened with steel-encased concrete under axial load is proposed considering the initial axial compression ratio, the strength level of outsourced concrete and the restraint of stirrups. By calculating the formula The results are compared with the test results and found that the average of the ultimate bearing capacity and the test result calculated by this calculation formula is 0.941 5 and the average error is 5.86% .Conclusion According to the test results and the formula given by the author, the calculated results are in good agreement , Proved the correctness of the formula, and this formula has a good safety reserve, can be used to guide the actual project.