| 某下承式钢管混凝土拱桥二类稳定分析研究 |
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| 引用本文： | 谭国宏,李龙安.某下承式钢管混凝土拱桥二类稳定分析研究[J].桥梁建设,2011(3). |
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| 作者姓名： | 谭国宏 李龙安 |
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| 作者单位： | 中铁大桥勘测设计院有限公司,湖北武汉,430056 |
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| 摘 要： | 为研究下承式钢管混凝土拱桥二类稳定性问题,以某下承式钢管混凝土拱桥的方案设计为背景,利用大型分析软件ANSYS建立3个全桥有限元模型,其钢管混凝土材料分别采用统一理论法、组合截面法和双单元法进行模拟;探讨了二类稳定安全系数的评判标准,根据规范提出了二类稳定安全系数的判定计算方法。计算分析结果表明,统一理论法计算值偏大;组合截面法和双单元法能比较真实地模拟钢管混凝土材料,拱桥稳定性分析二者计算结果相近;该下承式钢管混凝土拱桥稳定性有保证。
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| 关 键 词： | 拱桥 钢管混凝土结构 稳定性 安全系数 非线性 有限元法 |
Analytical Study of Category 2 Stability of a Concrete Filled Steel Tubular Through Arch Bridge |
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| TAN Guo-hong,LI Long-an.Analytical Study of Category 2 Stability of a Concrete Filled Steel Tubular Through Arch Bridge[J].Bridge Construction,2011(3). |
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| Authors: | TAN Guo-hong LI Long-an |
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| Institution: | TAN Guo-hong,LI Long-an(China Railway Major Bridge Reconnaissance & Design Institute Co.,Ltd.,Wuhan 430056,China) |
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| Abstract: | To study the issue of category 2 stability of concrete-filled steel tubular(CFST) through arch bridges,the conceptual design of a CFST through arch bridge was cited as an example and three finite element models for the whole bridge of the bridge were set up by the large scale analysis software ANSYS.The CFST materials of the models were simulated respectively by the unified theory method,combined section method and dual elements method,the judgment criteria for the category 2 stability safety factors were d... |
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| Keywords: | arch bridge concrete-filled steel tubular structure stability safety factor nonlinearity finite element method |
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