[1]杨仕若,曾庆元.铁路车桥耦合振动模态法分析[J].深圳大学学报理工版,2011,28(No.2(095-188)):131-135.
　YANG Shi-ruo and ZENG Qing-yuan.Coupling vibration analysis of vehicle-bridge by mode method[J].Journal of Shenzhen University Science and Engineering,2011,28(No.2(095-188)):131-135.
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铁路车桥耦合振动模态法分析()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第28卷
期数:
2011年No.2(095-188)
页码:
131-135
栏目:
土木建筑工程
出版日期:
2011-03-20

文章信息/Info

Title:
Coupling vibration analysis of  vehicle-bridge by mode method
文章编号:
1000-2618(2011)02-0131-05
作者:
杨仕若1; 曾庆元2
1）中南林业科技大学土木工程与力学学院，长沙 410004
2）中南大学土木建筑学院，长沙410075
Author(s):
YANG Shi-ruo1 and ZENG Qing-yuan2
1)College of Civil Engineering and Mechanics，Central South University of Forestry and Technology，
Changsha 410004，P．R．China
2)School of Civil Engineering and Architecture，Central South University，Changsha 410075，P．R．China
关键词:
桥梁工程; 钢桁梁桥; 模态法; 桥梁振动; 能量法
Keywords:
bridge engineering; truss girder bridge; mode; bridge vibration; energy principle
分类号:
U 441.3
文献标志码:
A
摘要:
以钢桁梁桥自由振动的模态和正则坐标作为桥跨结构振动的位移函数，将列车-钢桁梁桥作为一个系统，计算正则坐标下钢桁梁桥及车辆的总势能．基于弹性系统的总势能值不变原理及形成矩阵的对号入座法则，建立了车桥时变系统在正则坐标下的振动方程，有效减少了车桥振动的自由度和计算工作量．以某铁路为例，计算了连续钢桁梁桥车桥系统的振动响应，并用模态法和非模态法进行对比，最小误差为0.16%．
Abstract:
The free vibration mode of the truss girder bridge and normal coordinates are taken as displacement functions of the bridge vibration. By coupling the vehicle and the truss girder bridge as one composite system, the total potential energy of the vehicle and the truss girder bridge under normal coordinates are calculated. Based on the principle of the total potential energy with stationary value in elastic system and the set-in-right-position rule for  forming structural matrices, the vibration equations of vehicle-bridge are established in time-varying system. The calculation results are compared with the ones by non-mode method. The minimum error of the results by the two methods is 0.16%. The mode method could reduce the degrees of freedom of the vehicle-bridge system，thus it reduces the computing time considerably．

参考文献/References:




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备注/Memo

备注/Memo:
收稿日期：2010-04-24；修回日期：2010-12-29
基金项目：国家自然科学基金资助项目(50078006)；湖南省自然科学基金资助项目(07JJ6098)
作者简介：杨仕若（1958-），男（汉族），湖南省浏阳市人，中南林业科技大学副教授．E-mail：yangshiruo@163.com
更新日期/Last Update: 2011-03-28