| 钢-混凝土组合梁弯扭相关性的试验研究 |
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| 引用本文： | 胡少伟,聂建国.钢-混凝土组合梁弯扭相关性的试验研究[J].建筑结构,2005,35(1):44-48. |
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| 作者姓名： | 胡少伟 聂建国 |
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| 作者单位： | 南京水利科学研究院,210029;清华大学,北京,100084 |
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| 基金项目： | 国家自然科学基金资助项目 ( 5 97780 3 8)，北京市科委资助项目( 95 3 0 0 80 2 ) |
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| 摘 要： | 为研究钢 混凝土组合梁的弯扭性能 ,完成了 4根组合梁的弯扭试验。详述了在不同扭弯比下组合梁的受力性能及破坏形态 ,对裂缝发展和应力的变化情况进行了分析。指出了根据传统的弯剪扭相关方程得到的极限扭矩计算公式的不合理性。根据破坏机理 ,推导出了弯扭复合作用时极限扭矩的计算公式 ,并给出了弯剪扭复合作用时的相关公式及影响因素。计算结果与试验值吻合较好
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| 关 键 词： | 钢-混凝土组合梁 复合受扭 试验分析 弯扭相关性 |
Experimental Study on Interaction of Flexure and Torsion in Composite Steel-concrete Beams |
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| Hu Shaowei ,Nie Jianguo.Experimental Study on Interaction of Flexure and Torsion in Composite Steel-concrete Beams[J].Building Structure,2005,35(1):44-48. |
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| Authors: | Hu Shaowei Nie Jianguo |
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| Affiliation: | Hu Shaowei 1,Nie Jianguo 2 |
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| Abstract: | In order to investigate the behavior of composite steel-concrete beam under combined bending and torsion, four specimens are tested. With different bending-torsion ratios, failure modes, crack behavior and stress are analyzed. The current method for determining the ultimate torsion resistance of composite beam based on bending-shear-torsion relativity equation is unreasonable and a new formula is proposed. The calculated results are in good agreement with experimental results. Finally, the interaction equations and its effected factors of composite beams subjected to bending-torsion and bending-shear-torsion are given respectively. |
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| Keywords: | composite steel-concrete beam flexure torsion experimental study interaction of flexure and torsion |
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