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工业建筑  2010 

矩形钢管混凝土短柱轴压承载力

DOI: 10.13204/j.gyjz201007024, PP. 95-99

Keywords: 矩形钢管混凝土,承载力,短柱,约束作用,破坏准则

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Abstract:

提出一种矩形钢管混凝土短柱轴压承载力计算的新方法。与已有的计算方法不同之处在于,所提出的方法考虑了矩形钢管截面长边、短边对核心混凝土约束作用大小不同的特点,应用基于混凝土真三轴受力试验的破坏准则确定管内核心混凝土的峰值强度;同时,考虑矩形钢管截面长边、短边的竖向强度的差异,分别计算矩形钢管长、短边的竖向强度。应用新方法对56根矩形钢管混凝土柱试件的轴压承载力进行计算,计算结果与试验结果比较表明,两者吻合良好。

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