| 预应力高强混凝土梁极限承载力分析 |
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| 引用本文： | 刘小燕,颜东煌,张峰,魏洪昌,韦成龙.预应力高强混凝土梁极限承载力分析[J].中国公路学报,2006,19(1):58-61,79. |
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| 作者姓名： | 刘小燕 颜东煌 张峰 魏洪昌 韦成龙 |
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| 作者单位： | 1. 长沙理工大学,桥梁与结构工程学院,湖南,长沙,410076
2. 交通部公路科学研究院,北京,100088 |
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| 基金项目： | 交通部重点科技攻关项目;湖南省自然科学基金 |
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| 摘 要： | 针对高强混凝土材料力学行为的特殊性，考虑材料非线性的影响，通过将普通钢筋均匀“涂抹”于混凝土中，建立综合本构关系矩阵，将由此形成的普通钢筋与混凝土匀质材料整体离散为实体单元，并将预应力钢筋离散为独立的一维单元，用有限元法对预应力高强混凝土T型梁进行了极限承载力分析研究，给出了梁受力全过程矿．厂曲线，分析了其受力变形和破坏特点。为方便结构工程师参考，还对影响预应力高强混凝土梁极限承载力的主要结构参数（配筋率、高跨比等）进行了分析计算，推荐了这些参数的合理取值范围。
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| 关 键 词： | 桥梁工程 高强混凝土梁 有限元法 极限承载力 非线性 参数分析 |
| 文章编号： | 1001-7372（2006）01-0058-04 |
| 收稿时间： | 2005-05-21 |
| 修稿时间： | 2005-05-21 |
Ultimate Load Analysis of Prestressed High-Strength Concrete Beam |
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| LIU Xiao-yan,YAN Dong-huang,ZHANG Feng,WEI Hong-chang,WEI Cheng-long.Ultimate Load Analysis of Prestressed High-Strength Concrete Beam[J].China Journal of Highway and Transport,2006,19(1):58-61,79. |
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| Authors: | LIU Xiao-yan YAN Dong-huang ZHANG Feng WEI Hong-chang WEI Cheng-long |
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| Institution: | 1. School of Bridge and Structure Engineering, Changsha University of Science and Technology, Changsha 410076, Hunan, China; 2. Highway Research Institute of M. O. C. , Beijing 100088, China |
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| Abstract: | The ultimate load of prestressed high-strength concrete T beam was analyzed with material nonlinear properties being taken full consider of. Both solid and one dimensional elements were used for reinforcement concrete and prestressed bar. Curve p-f was given for whole loading procedure. Based on the above theory, influence of main parameters upon the ultimate load was analyzed. The scope of these parameters was acquired, which could provide reference to design and calculation. |
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| Keywords: | bridge engineering high-strength concrete beam finite element method ultimate load nonlinear parameter analysis |
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