| 多跨连续曲线梁桥静力分析的有限段法 |
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| 引用本文： | 娄奕红,罗旗帜,杜嘉斌.多跨连续曲线梁桥静力分析的有限段法[J].铁道科学与工程学报,2005,2(6):83-87. |
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| 作者姓名： | 娄奕红 罗旗帜 杜嘉斌 |
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| 作者单位： | 佛山科学技术学院,土木工程与建筑系,广东,佛山,528000;华南理工大学,土木工程系,广东,广州,510640 |
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| 基金项目： | 中国科学院资助项目;广东省博士启动基金 |
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| 摘 要： | 利用能量变分原理，推导出平面曲线籀梁的基本微分方程、边界条件；采用微分方程的齐次解作为位移模式，推导出平面曲线箱梁有限段法分析的单元刚度矩阵、荷栽矩阵；编制了计算分析程序，计算结果与其他方法分析值吻合较好：探讨了抗弯刚度与抗扭刚度之比对连续曲线箱梁位移、内力的影响，为连续曲线箱梁的设计计算与施工提供了参考。
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| 关 键 词： | 连续曲线箱梁 能量变分原理 有限段法 弯扭刚度比 |
| 文章编号： | 1672-7029(2005)06-0083-05 |
| 收稿时间： | 2005-10-13 |
| 修稿时间： | 2005年10月13 |
Finite segment method for static analysis of cntinuous curved box girder |
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| LOU Yi-hong,LUO Qi-zhi,DU Jia-bin.Finite segment method for static analysis of cntinuous curved box girder[J].Journal of Railway Science and Engineering,2005,2(6):83-87. |
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| Authors: | LOU Yi-hong LUO Qi-zhi DU Jia-bin |
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| Institution: | 1. Civil Engineering and Architecture Department , Foshan University, Foshan 528000, China; 2, Civil Engineering Department , South China University of Technology, Guangzhou 510640, China |
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| Abstract: | On the basis of the energy-variational principle , the differential equations and boundary conditions of curved box girder are derived . The solution derived from the differential equations is used as the displacement patterns of finite segment. The stiffness matrix and load column matrixes are obtained by means of directed stiffness method and working-energy principle. A program is designed to calctdate the stress and displacement of the curved girder bridge. The results of numerical calculation and other methods are well matched in this paper. The variations of displacement and stress of curved box girder bridge are caused by anti-bending stiffness/anti-twisting stiffness ratio are discussed. The results are impotent to the design and construction of curved box girder bridges. |
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| Keywords: | continuous curved box girder energy-variational principle finite segment method bending-twisting stiffness ratio |
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