| 轻轨箱形桥梁的模态比较与桥型优化 |
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| 引用本文： | 赵甲荐,魏德敏.轻轨箱形桥梁的模态比较与桥型优化[J].公路,2011(11):46-51. |
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| 作者姓名： | 赵甲荐 魏德敏 |
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| 作者单位： | 1. 华南理工大学亚热带建筑科学国家重点实验室 广州市510641; 仲恺农业工程学院城市建设学院 广州市510225
2. 华南理工大学亚热带建筑科学国家重点实验室 广州市510641 |
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| 基金项目： | 国家自然科学基金项目,项目编号50378040; 仲恺农业工程学院校级科研基金资助项目,项目编号G3082927 |
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| 摘 要： | 比较箱梁不同桥型的抗扭刚度差异,优化箱梁桥型,对于国内大量建设城市轨道交通尤为重要.通过对五种轻轨箱形桥梁的有限元建模,归纳总结了五种箱形桥梁前10阶的固有频率和振型特征,并对模态分析结果进行了横向、纵向的对比,同时还研究了固有频率和结构刚度的关系,最后对轻轨箱形桥梁的桥型进行了优化.结果表明,带端隔墙和横隔板箱梁的抗...
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| 关 键 词： | 箱形梁桥 模态分析 桥型优化 振型 固有频率 刚度 |
Modal Comparison and Bridge-Type Optimization of Light-Rail Box Girder Bridges |
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| ZHAO Jia-jian,WEI De-min.Modal Comparison and Bridge-Type Optimization of Light-Rail Box Girder Bridges[J].Highway,2011(11):46-51. |
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| Authors: | ZHAO Jia-jian WEI De-min |
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| Institution: | ZHAO Jia-jian1,2,WEI De-min1(1.State Key Lab.of Subtropical Building Science,South China Univ.of Tech.,Guangzhou 510641,China,2.College of Urban Construction,Zhongkai Univ.of Agriculture and Engineering,Guangzhou 510225,China) |
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| Abstract: | Top 10 natural frequencies and mode shape characteristics of five types of light-rail box girder bridges are summarized by FE modeling,and the mode analysis results are horizontally,vertically contrasted.Furthermore,the relationships between the natural frequency and structural stiffness are studied.Finally,the bridge-types of five types of light-rail box girder bridges are optimized.The results show that the torsional rigidity of the box girder with side walls and diaphragms is much greater than that of th... |
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| Keywords: | modal analysis bridge-type optimization mode shape natural frequencies stiffness |
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