| 双肋拱桥横向稳定性分析 |
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| 引用本文： | 罗征,孙学先,刘志峰. 双肋拱桥横向稳定性分析[J]. 兰州交通大学学报, 2007, 26(4): 70-72,77 |
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| 作者姓名： | 罗征 孙学先 刘志峰 |
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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;兰州交通大学,土木工程学院,甘肃,兰州,730070;兰州交通大学,土木工程学院,甘肃,兰州,730070 |
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| 摘 要： | 利用最小势能原理推导了肋拱桥结构在外荷载作用下侧倾稳定临界力的近似解析解.通过讨论横撑设置及刚度的变化并结合某座钢筋混凝土双肋系杆拱桥在成桥阶段的稳定性有限元分析结果,探讨了横撑形式与类型对双肋拱桥的稳定系数和失稳模态的影响规律,并对该类桥梁的横撑设计提出了可供参考的建议.
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| 关 键 词： | 系杆拱桥 最小势能原理 稳定性 有限元 |
| 文章编号： | 1001-4373（2007）04-0070-03 |
| 修稿时间： | 2007-03-26 |
Effect of Transverse Brace on Stability of Two-rib Arch Bridge |
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| Luo Zheng,Sun Xuexian,Liu Zhifeng. Effect of Transverse Brace on Stability of Two-rib Arch Bridge[J]. Journal of Lanzhou Jiaotong University, 2007, 26(4): 70-72,77 |
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| Authors: | Luo Zheng Sun Xuexian Liu Zhifeng |
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| Affiliation: | School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China |
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| Abstract: | With the principle of the minimum potential energy,an analytical solution for the lateral critical bucking lord of tied-arch bridges is studied.To verity transverse brace and rigidity factor,a practical bridge is analyzed using the formula presented in this paper.The structural parameter influence on the buckling load is also investigated.The reference is put forward to this kind of bridge. |
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| Keywords: | tied arch minimum potential energy stability finite element |
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