| 桥梁荷载横向分布系数计算方法 |
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| 引用本文： | 刘华,叶见曙,俞博,李海生.桥梁荷载横向分布系数计算方法[J].交通运输工程学报,2009,9(1). |
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| 作者姓名： | 刘华 叶见曙 俞博 李海生 |
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| 作者单位： | 刘华,LIU Hua(中铁大桥勘测设计院有限公司,湖北,武汉,430050;中铁大桥(南京)桥隧诊治有限公司,江苏,南京,210061);叶见曙,俞博,李海生,YE Jian-shu,YU Bo,LI Hai-sheng(东南大学,交通学院,江苏,南京,210096)
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 以主梁挠度横向分布规律来确定桥梁荷载横向分布,考虑了桥梁结构计算模态的固有频率、振型和模态质量,提出了一种适用于各种结构形式桥梁的荷载横向分布系数计算方法,即模态参数法.分别以一座有机玻璃模型试验桥梁和一座公路斜交T型桥梁为算例,介绍了桥梁荷载横向分布系数的计算步骤.计算结果表明:荷载横向分布系数的测量值与计算值最大误差为2.6%,因此,相比于传统的桥梁荷载横向分布系数计算方法,模态参数法减小了对桥梁结构进行分类和假定带来的误差,更具有通用性和准确性.
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| 关 键 词： | 桥梁工程 模态参数 荷载横向分布影响线 荷载横向分布系数 |
Calculation method of transversal distribution factor for bridge load |
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| LIU Hua,YE Jian-shu,YU Bo,LI Hai-sheng.Calculation method of transversal distribution factor for bridge load[J].Journal of Traffic and Transportation Engineering,2009,9(1). |
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| Authors: | LIU Hua YE Jian-shu YU Bo LI Hai-sheng |
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| Abstract: | The load transversal distribution of bridge was confirmed according to the transversal distribution rule of main girder's vertical displacement. The modal parameters of bridge structure,such as natural frequency,modal shape and modal mass,were considered. A modal parameter method of calculating load transversal distribution factor was advanced for all kinds of bridge structure types. A test bridge model made of organic glass and a highway skew T bridge were selected to discuss the applying steps of the meth... |
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| Keywords: | bridge engineering modal parameter influencing line of load transversal distribution load transversal distribution factor |
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