| 预应力作用下组合梁混凝土法向应力分析 |
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| 引用本文： | 周安,戴航,刘其伟.预应力作用下组合梁混凝土法向应力分析[J].建筑科学,2006,22(2):8-10. |
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| 作者姓名： | 周安 戴航 刘其伟 |
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| 作者单位： | 1. 东南大学,南京,210096;合肥工业大学,合肥,230009
2. 东南大学,南京,210096 |
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| 摘 要： | 针对在混凝土翼板中设置后张预应力的连续组合梁，提出由分担预加轴力、主弯矩和次弯矩产生的混凝土法向应力计算公式，主要分析施加于混凝土翼板的预应力通过剪力键向钢梁传递的力学模型，建立混凝土翼板承担的预压力沿梁纵轴的分布函数和理论解，求得考虑剪力键柔性的混凝土法向应力计算公式，作为组合梁抗裂设计依据。
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| 关 键 词： | 法向应力 预应力组合梁 剪力键 滑移 |
| 文章编号： | 1002-8528（2006）02-08-03 |
| 收稿时间： | 2005-03-09 |
| 修稿时间： | 2005-03-09 |
Analysis of Normal Stress of Concrete in Prestressed Composite Beams |
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| ZHOU An,DAI Hang,LIU Qi-wei.Analysis of Normal Stress of Concrete in Prestressed Composite Beams[J].Building Science,2006,22(2):8-10. |
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| Authors: | ZHOU An DAI Hang LIU Qi-wei |
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| Affiliation: | 1. Southeast University, Nanjing 210096, China ; 2. Hefei University of Technology, Hefei 230009, China |
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| Abstract: | For the post-tensioned prestressed steel-concrete composite beam, a method of calculating the concrete normal stress is presented. A mechanical model about prestressing transferr from concrete slab to steel girder by shear connectors is analyzed. The longitudinal distribution function and theoretical solution of axial prestressing of concrete slab has been established. It gives a basis for design of crack resistance of composite beams. |
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| Keywords: | normal stress prestressed composite beam shear connector slip |
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