摘要
对钢管混凝土中核心混凝土的应力状态进行了分析,给出了圆形、矩形两种截面中钢管侧压应力的计算方法和近似公式,应用线性莫尔强度准则导出了核心混凝土的强度条件,表明钢管的侧压对提高核心混凝土的强度是有利的。并以此为基础,建立了轴心受压圆形、矩形截面钢管混凝土短柱的极限承载力计算公式,计算结果与有关文献的试验数据吻合良好,说明线性莫尔强度准则对钢管混凝土有很好的适用性。
The analysis of the stress state for core concrete in concrete-filled steel tubes is carried out. The computational method and approximate formulas of stresses in circular, rectangular section steel tubes subjected to side compression are given. The strength condition is deduced using Mohr＇s linear strength criteria. Results show that the side compress of the steel tubes contributes to the enhancemeni of core concrete strength. On that basis the computational formulas of ultimate capacity force for concrete filled circular, rectangular section short columns are established. The results arc in line with experimental datum in the corresponding literature. Mohr＇s linear strength criteria is appropriate for the concrete filled steel tubes.
出处
《四川建筑科学研究》
北大核心
2007年第5期126-129,共4页
Sichuan Building Science
基金
嘉兴学院科研基金资助项目(70106004)
关键词
钢管混凝土
莫尔准则
承载力
强度计算
concrete filled steel tube
Mohr＇s criteria
capacity
calculation of strength
