| 下承式简支钢管混凝土拱桥吊杆索力优化研究 |
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| 引用本文： | 秦鸿.下承式简支钢管混凝土拱桥吊杆索力优化研究[J].重庆交通学院学报,2011(3). |
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| 作者姓名： | 秦鸿 |
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| 作者单位： | 重庆市交通规划勘察设计院; |
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| 摘 要： | 通过考虑某下承式简支钢管混凝土拱桥的施工过程,对其进行了有限元分析,得出了受力最为不利施工阶段结构的内力分布。本结构为外部静定的多次超静定结构,每一次对吊杆索力的调整都会影响到结构的内力分布以及梁体、拱肋的线性,因而利用影响矩阵法对施工过程中的索力调整进行了优化,使得成桥后结构的内力分布更能符合设计要求。
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| 关 键 词： | 简支钢管拱桥 施工阶段 有限元 索力调整 |
Finite Element Simulating and Analysis of Railway through Concrete Filled Steel Tubular Arch Bridge |
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| QIN Hong.Finite Element Simulating and Analysis of Railway through Concrete Filled Steel Tubular Arch Bridge[J].Journal of Chongqing Jiaotong University,2011(3). |
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| Authors: | QIN Hong |
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| Institution: | QIN Hong(Chongqing Communications Planning Survey and Design Institute,Chongqing 401147,China) |
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| Abstract: | The whole construction process of a concrete filled steel tubular arch bridge was analyzed in detail and then the inner forces of critical stages were attained.The bridge is a structure which is multi-statically indeterminate inside but statically determinate outside,as a result,there will be many times of structure system transformation in the whole construction process;moreover,distribution of inner force and the line type criteria of the structure will be influenced by cable adjustment of every cable.Fin... |
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| Keywords: | simply-supported steel tube arch bridge construction stage finite element cable tension adjustment |
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