| 大跨钢桁加劲梁气动弹性模型的设计方法 |
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| 引用本文： | 徐洪涛,苑敏,蒲焕玲,廖海黎.大跨钢桁加劲梁气动弹性模型的设计方法[J].四川建筑科学研究,2009,35(2). |
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| 作者姓名： | 徐洪涛 苑敏 蒲焕玲 廖海黎 |
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| 作者单位： | 1. 西南交通大学风工程试验研究中心,四川,成都,610031
2. 邢台职业技术学院建筑工程系,河北,邢台,054035 |
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| 摘 要： | 全桥气动弹性模型试验对于大跨径桥梁的抗风设计和施工具有重要的指导意义,目前,气动弹性模型的设计中对于加劲梁刚度的模拟,通常是采用金属芯梁的方法,这种方法适用于箱梁结构.而对于桁架这种结构,由于芯梁在一定程度上影响风的绕流状态,会导致较大的偏差.本文提出在主梁弦杆上用4个"U"形弹性元件把各个梁段连接起来,通过弹性元件的变形来模拟主梁的刚度,大大地降低了模型附加设施对气动力的影响.以坝陵河大桥为例,介绍了大跨钢桁加劲梁的气动弹性模型的设计.
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| 关 键 词： | 气动弹性模型 U形弹性元件 模型参数 |
Long-span stiffening steel truss girder aeroelastic model design method |
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| XU Hongtao,YUAN Min,PU Huanling,LIAO Haili.Long-span stiffening steel truss girder aeroelastic model design method[J].Building Science Research of Sichuan,2009,35(2). |
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| Authors: | XU Hongtao YUAN Min PU Huanling LIAO Haili |
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| Affiliation: | 1.Wind Engineering Test and Research Center of Southwest Jiaotong University;Chengdu 610031;China;2.College of Xingtai Vocation and Technology;Xingtai 054035;China |
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| Abstract: | Full bridge aeroelastic model test has important guide meaning to long-span bridge wind resistance design.Presently,the metal core beam is generally used in modeling rigidity of stiffening beam in aeroelastic model design.The core beam is effective to box girder structure,however,unfit for truss beam because it affects flow around girder at a certainextent and results in biggish difference.The thesis uses four 'U'-shape elastic elements on main girder's chord poles to connect every girder segments.Modeling ... |
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| Keywords: | aero-elastic model U-shape elastic element model parameters |
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