| 下承式简支钢管混凝土拱桥剪滞效应分析 |
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| 引用本文： | 张莉,刘世忠.下承式简支钢管混凝土拱桥剪滞效应分析[J].兰州铁道学院学报,2011,30(1). |
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| 作者姓名： | 张莉 刘世忠 |
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| 作者单位： | 兰州交通大学土木工程学院,甘肃,兰州,730070 |
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| 摘 要： | 以大理河下承式简支钢管混凝土拱桥为背景,采用大型通用有限元计算软件Ansys建立全桥空间模型,沿全桥纵向取了7个典型断面,分析其在不同设计荷载工况下,T梁顶板的剪力滞效应,得出各典型截面上T梁顶板的剪力滞系数沿全桥横向、纵向的分布规律.指出跨中截面剪力滞后现象严重,剪力滞系数高达1.82;不同工况下其余截面的剪力滞效应较小;偏载作用下T梁顶板的剪力滞效应较对称荷载作用小.计算结果可为同类大桥设计提供参考.
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| 关 键 词： | T型梁 下承式钢管混凝土拱桥 剪力滞效应 有限元法 |
Analysis of Shear Lag Effect of Through Concrete-Filled Steel-Tubular Arch Bridge |
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| ZHANG Li,LIU Shi-zhong.Analysis of Shear Lag Effect of Through Concrete-Filled Steel-Tubular Arch Bridge[J].Journal of Lanzhou Railway University,2011,30(1). |
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| Authors: | ZHANG Li LIU Shi-zhong |
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| Institution: | ZHANG Li,LIU Shi-zhong(School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China) |
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| Abstract: | By taking a through concrete-filled steel-tubular arch bridge over Dali River as an engineering example,and using solid and beam element of Ansys,the shear lag effect of steel-tubular arch bridge is analyzed.Taking seven typical sections along longitudinal direction of overall bridge and investigating the shear lag effect of the top plate of T-type girder under different designed load conditions,the paper obtains the distribution rule of the shear lag coefficients of the main controlling cross-sections alon... |
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| Keywords: | T-type girder through concrete-filled steel-tubular arch bridge shear lag effect finite element method |
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