| 曲线箱梁剪力滞效应及其影响因素 |
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| 引用本文： | 李长凤,杜文学,周莉.曲线箱梁剪力滞效应及其影响因素[J].黑龙江科技学院学报,2008,18(2):98-102. |
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| 作者姓名： | 李长凤 杜文学 周莉 |
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| 作者单位： | 黑龙江科技学院,建筑工程学院,哈尔滨,150027 |
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| 基金项目： | 内蒙古工业大学重点基金 |
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| 摘 要： | 为研究曲线箱梁的剪力滞效应,以薄壁曲梁的理论位移为基础,利用箱梁剪力滞分析的纵向位移函数,同时考虑弯扭耦合作用、曲率半径沿梁宽的变化和荷载横向分布等因素的影响,应用变分法推导了曲线箱梁剪力滞效应的弹性控制微分方程.不同荷载作用下结构反应的分析表明,依据该方法所得结果与实验值吻合较好,进一步验证了曲率半径和中心角对曲线箱梁的剪力滞效应的重要影响.
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| 关 键 词： | 曲线箱梁 剪力滞 变分法 曲率半径 中心角 |
| 文章编号： | 1671-0118(2008)02-0098-05 |
| 修稿时间： | 2008年2月26日 |
Analysis of shear lag and effect factors in curved box girder |
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| LI Changfeng,DU Wenxue,ZHOU Li.Analysis of shear lag and effect factors in curved box girder[J].Journal of Heilongjiang Institute of Science and Technology,2008,18(2):98-102. |
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| Authors: | LI Changfeng DU Wenxue ZHOU Li |
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| Institution: | LI Changfeng,DU Wenxue,ZHOU Li(Department of Civil Engineering,Heilongjiang Institute of Science , Technology,Harbin 150027,China) |
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| Abstract: | In order to analyze the effect of the shear lag and coupling role of moment,the paper analyzes shear and torsion in curved box girder,difference of curvature radius with the width of girder and the transverse distribution of load,depending on the fundamental theory of thin-web curve box girder,combined with the longitude displacement function.The paper gives the elastic differential equations of shear lag in curved box girder derived from the use of the variation method so as to address the effect of curvat... |
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| Keywords: | curved box girder shear lag variation principle curvature radius center angle |
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