| 某超大跨度斜拉桥动力特性分析 |
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| 引用本文： | 施文杰,张亮亮,邓世贵.某超大跨度斜拉桥动力特性分析[J].现代交通技术,2008,5(1):38-40. |
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| 作者姓名： | 施文杰 张亮亮 邓世贵 |
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| 作者单位： | 重庆大学土木工程学院,重庆,400045 |
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| 摘 要： | 摘要：为了研究某超大跨度半漂浮体系斜拉桥的动力特性，应用有限元软件ANSYS对该斜拉桥建立了空间有限元模型，采用子空间迭代法对该桥模型的模态进行求解，得到该斜拉桥的自振频率和振型。分析结果显示该超大跨度半漂浮体系斜拉桥具有基本周期长、自振频率较低、模态密集、振型相互耦合等特点。
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| 关 键 词： | 桥梁工程 斜拉桥 有限元法 动力特性 ANSYS |
| 文章编号： | 1672-9889(2008)01-0038-03 |
| 修稿时间： | 2007年11月8日 |
Dynamic Characteristics Analysis of a Super-long-span Cable-stayed Bridge |
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| Shi Wenjie,Zhang Liangliang,Deng Shigui.Dynamic Characteristics Analysis of a Super-long-span Cable-stayed Bridge[J].Modern Transportation Technology,2008,5(1):38-40. |
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| Authors: | Shi Wenjie Zhang Liangliang Deng Shigui |
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| Institution: | (School of Civil Engineering, Chongqing University, Chongqing 400045, China) |
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| Abstract: | In order to study the dynamic characteristics of a super-long-span cable-stayed bridge which is semi-floating system, the spatial finite element model of this cable-stayed bridge was established in ANSYS based on the finite element theory.Modal solution was conducted using subspace iteration method, and natural frequencies and vibration modes were obtained.The dynamic characteristics of this super-long-span cable-stayed bridge were then analyzed.Results showed that the super-long-span cable-stayed bridge of semi-floating system has long basic cycle, low natural frequencies, dense modes and intercoupling vibration modes. |
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| Keywords: | bridge engineering cable-stayed bridge finite element method dynamic characteristics ANSYS |
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