| 计入列车制动力的大跨度公铁两用斜拉桥极限状态研究 |
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| 引用本文： | 王.计入列车制动力的大跨度公铁两用斜拉桥极限状态研究[J].武汉理工大学学报(交通科学与工程版),2008,32(6). |
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| 作者姓名： | 王 |
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| 作者单位： | 1. 武汉理工大学土木工程与建筑学院
2. 道路桥梁与结构省重点实验室,武汉,430070 |
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| 基金项目： | 国家自然科学基金项目资助
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| 摘 要： | 以天兴洲公铁两用斜拉桥为例,建立有限元模型,考虑了制动力作用的极限状态.采用以线型控制的索力迭代分步算法确定斜拉桥成桥索力,按照铁路和公路工程结构可靠度设计统一标准,分析、计算和比较了5种荷载工况的作用效果,确定出最不利荷载工况.计入几何非线性影响,进行斜拉桥承载能力和正常使用极限状态分析.利用Ansys参数化设计语言进行后处理,研究斜拉桥在承载能力极限状态下主要构件的应力水平和应力分布.
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| 关 键 词： | 斜拉桥 极限状态 非线性 有限元 |
Study on Limit State of Long Span Road/Rail Cable-stayed Bridges Considering Braking Force |
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| Wang Wei,Qu Weilian.Study on Limit State of Long Span Road/Rail Cable-stayed Bridges Considering Braking Force[J].journal of wuhan university of technology(transportation science&engineering),2008,32(6). |
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| Authors: | Wang Wei Qu Weilian |
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| Institution: | College of Civil Engineering & Architecture;WUT;Wuhan 430070;Hubei Key Laboratory of Roadway Bridge & Structure Engineeriog;Wuhan 430070 |
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| Abstract: | To study the limit state of highway/railway cable-stayed bridges under braking force,the finite element model of Tianxingzhou Yangtze River Bridge is built with Ansys.Using step-by-step algorithm,cable tension adjustment for line-style control of reasonable finished dead state of cable-stayed bridges is discussed.With consideration of the braking force on the bridge,the most disadvantageous loading condition is investigated according to the unified standard of engineering structure design for highway and ra... |
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| Keywords: | cable-stayed bridge ultimate limit state nonlinearity finite element |
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