| 圆钢管混凝土短柱轴压极限承载力分析 |
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| 引用本文： | 梁本亮，刘建新.圆钢管混凝土短柱轴压极限承载力分析[J].上海交通大学学报,2010,44(6):749-0754. |
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| 作者姓名： | 梁本亮，刘建新 |
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| 作者单位： | (上海师范大学 建筑工程学院，上海 201418) |
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| 摘 要： | 针对钢管混凝土短柱轴压状态,考虑屈服时钢管竖向应力对承载力的贡献,采用厚壁圆筒理论和双剪统一强度理论,对钢管进行极限承载力分析;对混凝土采用Drucker-Prager屈服理论进行钢管约束下的承载力的计算分析,两者叠加得到钢管混凝土的极限承载力计算公式,并与现有试验数据进行对比,结果吻合良好,为圆钢管混凝土轴压短柱极限承载力的计算提供了一种新的方法.
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| 关 键 词： | 钢管混凝土短柱 轴压 厚壁圆筒 双剪统一强度理论 极限承载力 |
| 收稿时间： | 2009-9-30 |
Ultimate Bearing Capacity of Concrete Filled Circular Steel Tubular Short Columns under Axial Compression |
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| LIANG Ben liang,LIU Jian xin.Ultimate Bearing Capacity of Concrete Filled Circular Steel Tubular Short Columns under Axial Compression[J].Journal of Shanghai Jiaotong University,2010,44(6):749-0754. |
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| Authors: | LIANG Ben liang LIU Jian xin |
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| Institution: | (College of Civil Engineering, Shanghai Normal University, Shanghai 201418, China) |
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| Abstract: | Under the state of axial compression for short columns with concrete filled steel tube, considering the contribution of axial stress of steel tube when yielded, the thick walled tube theory and twin shear unified strength theory were introduced to analyze the steel tube. Drucker Prager strength criterion was used to analyze the core concrete bearing capacity. Through these methods, the formula for calculating ultimate bearing capacity of concrete filled steel tube was deduced. Compared with the existing experimental data and other equations, the computed results are in good agreement with them and it can provide a new approach to calculate the ultimate bearing capacity of core short columns with concrete filled steel tube under axial compression. |
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