| 高墩部分斜拉桥非线性稳定分析 |
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| 引用本文： | 桂勇,徐飞飞,张运波.高墩部分斜拉桥非线性稳定分析[J].石家庄铁道学院学报,2010,23(3):25-28. |
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| 作者姓名： | 桂勇 徐飞飞 张运波 |
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| 作者单位： | 桂勇(江西理工大学,应用科学学院,江西,赣州,341000);徐飞飞(唐山曹妃甸基础设施建设投资集团,河北,唐山,063200);张运波(石家庄铁道大学,土木工程学院,河北,石家庄,050043) |
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| 摘 要： | 论述了高墩结构的两类稳定问题，在考虑了几何非线性和材料非线性的基础上，结合仙神河斜拉桥的工程实例，利用大型通用有限元程序ANSYS，选取各种单元建立有限元模型，对比分析了该部分斜拉桥在最高裸墩状态和最大悬臂状态下的稳定性。通过计算分析可知，高墩结构的非线性影响很大，考虑非线性影响的稳定分析对于指导工程实践具有更好的实际意义。
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| 关 键 词： | 部分斜拉桥 有限元 非线性 稳定 |
Nonlinear Stability Analysis of Extra-dosed Cable-stayed Bridge with High Piers |
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| Gui Yong,Xu Feifei,Zhang Yunbo.Nonlinear Stability Analysis of Extra-dosed Cable-stayed Bridge with High Piers[J].Journal of Shijiazhuang Railway Institute,2010,23(3):25-28. |
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| Authors: | Gui Yong Xu Feifei Zhang Yunbo |
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| Institution: | 1. College of Applied Science of Jiangxi Technology University, Ganzhou 341000, China; 2. Caofeidian Infrastructure Construction and Investment Group Corporation, Taugshan 063200, China; 3 School of Civil Engineering of Shijiazhuang Tiedao University, Shijiazhuang 050043, China) |
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| Abstract: | Two kinds of stability problems with thin-wall and high pier structure are discussed. By utilizing the great universal finite element program ANSYS, some types of finite element models are established for the nonlinear stability analysis of Xianshenghe Cable-stayed Bridge at the state of the naked pier and the longest can- tilever on the basis of both geometrical and material nonlinearity. The conclusion indicates that nonlinearity has great influence on the thin-wall and high pier structure and should be considered in practical engineering. |
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| Keywords: | extra-dosed cable-stayed bridge finite element analysis nonlinearity stability |
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