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圆钢管混凝土轴压中长柱的承载力

, PP. 65-70

Keywords: 桥梁工程,钢管混凝土柱,理论分析,承载力,长细比,稳定系数

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Abstract:

？首先应用模型柱法,对钢管混凝土轴压中长柱荷载-变形关系进行全过程分析,得到了钢管混凝土轴压中长柱承载力的数值解法;其次,根据切线模量法推导了钢管混凝土轴压中长柱稳定承载力计算公式;再次,基于模型柱法,探讨了构件长细比、混凝土强度等级、含钢率和钢材屈服强度对钢管混凝土轴压中长柱承载力稳定系数的影响,并在修正切线模量法推导的计算公式的基础上,建立了钢管混凝土轴压中长柱承载力实用计算公式;最后将该公式计算结果与各国216根钢管混凝土轴压中长柱承载力有效试验结果进行了对比。结果表明:该承载力计算公式所得结果与试验结果吻合较好,且偏于安全。

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