| 曲线薄壁箱梁的空间受力分析 |
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| 引用本文： | 杨勇,贺国京.曲线薄壁箱梁的空间受力分析[J].铁道科学与工程学报,2000,18(2):17-21. |
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| 作者姓名： | 杨勇 贺国京 |
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| 作者单位： | 长沙铁道学院土木建筑学院，湖南 长沙 410075 |
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| 基金项目： | 国家自然科学基金;19502003; |
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| 摘 要： | 以曲线薄壁箱梁的翘曲扭转理论和微分几何为基础，导出了曲线箱梁的应变一位移关系．基于能量原理，通过引入单元变形模式，建立了相应的有限元列式，给出了曲线箱梁单元刚度矩阵及等效节点荷载列阵．数值算例结果表明，该理论正确，方法简单、易行．
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| 关 键 词： | 曲线 薄壁箱梁 有限元法 扭转 翘曲 curve thin-walled box girders |
| 文章编号： | 1000-2499(2000)02-0017-05 |
| 修稿时间： | 1998年11月17日 |
3-Dimensional Finite Element Analysisof Curved Thin-walled Box Girders |
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| YANG Yong,HUO Guo-jing.3-Dimensional Finite Element Analysisof Curved Thin-walled Box Girders[J].Journal of Railway Science and Engineering,2000,18(2):17-21. |
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| Authors: | YANG Yong HUO Guo-jing |
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| Abstract: | The strain-displacement relationship of curved box girder,which is based upon thedifferential geometry and the theory of warping and torsion of thin-walled curved box gird ers,is derived in this paper. By means of the energy principal,and the element sfiffness ma trix of curved box girder and the equivalent nodal load column matrix are established of thispaper element deformation model. The numerical results show that the theory presented inthis paper is correct,easy and practical. |
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| Keywords: | curve thin-walled box girders finite element method torsion warping |
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