| 预应力混凝土桥梁因钢束锈蚀的非线性分析 |
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| 引用本文： | 何雄君,陆爱民.预应力混凝土桥梁因钢束锈蚀的非线性分析[J].公路,2010(2). |
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| 作者姓名： | 何雄君 陆爱民 |
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| 作者单位： | 武汉理工大学交通学院,武汉市,430063 |
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| 摘 要： | 针对锈蚀钢束与混凝土间存在的黏结与滑移问题,基于桥梁分析中常用梁单元的特点,以Saenz公式和Skogman公式分别作为混凝土和预应力钢束的应力—应变本构关系,采用非线性弹簧模拟,提出刚臂元—非线性弹簧元—钢束元的方法,对锈蚀钢束与混凝土之间的黏结滑移进行分析。并以具体工程实例进行了分析计算,证明了所提出的方法用于预应力混凝土桥梁关于钢束锈蚀非线性分析的有效性。
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| 关 键 词： | 预应力混凝土桥梁 锈蚀 本构关系 黏结滑移 非线性分析 |
Nonlinear Analysis of Prestressed Concrete Bridges on Corrosion of Steel Strands |
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| HE Xiong-jun,LU Ai-min.Nonlinear Analysis of Prestressed Concrete Bridges on Corrosion of Steel Strands[J].Highway,2010(2). |
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| Authors: | HE Xiong-jun LU Ai-min |
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| Institution: | Shcool of Transportation;Wuhan University of Technology;Wuhan 430063;China |
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| Abstract: | Considering the problem of bond and slip between rusty steel strands and concrete,this problem is analyzed based on the feature of beam element which is always used in bridge calculation.In the paper,the formulas of Saenz and Skogman are applied separately to show the stress-strain constitutive relationship of concrete and prestressed tendons.And nonlinear spring is used to simulate the bond and slip between rusty steel strands and concrete.Meanwhile a analytical method is provided: rigid arm element-nonlin... |
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| Keywords: | prestressed concrete bridge corrosion constitutive relationship bond and slip nonlinear analysis |
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