车桥系统的耦合振动

陈炎; 黄小清; 马友发

车桥系统的耦合振动

华南理工大学交通学院,广州 510640

基金项目: 广东省自然科学基金资助项目(011602)

详细信息

作者简介:
陈炎(1963- ),男,广西藤县人,讲师,博士(联系人Tel:+86-20-87111304;E-mail:retangc@21cn.com).

中图分类号: O175；U441.3
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- 文章访问数: 3056
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- 被引次数: 0
出版历程
- 收稿日期: 2002-02-04
- 修回日期: 2003-11-18
- 刊出日期: 2004-04-15

Coupling Vibration of Vehicle-Bridge System

College of Traffic and Communications, South China University of Technology, Guangzhou 510640, P. R. China

摘要

摘要: 通过用正弦波形模拟桥面的不平和考虑移动车辆-桥梁间的相互作用，在Euler-Bernoulli梁理论的基础上建立了一种车桥系统的耦合振动模型．利用模态分析法和Runge-Kutta法对模型进行数值求解，获得了车桥系统耦合振动的动态响应和共振曲线．发现车桥耦合振动的共振曲线中存在两个共振区域，一个反映主共振而另一个反映次共振．讨论了桥面不平、桥梁振型和车辆间的相互作用对系统振动的影响．数值结果表明，这些参数对系统振动的影响很大，桥面不平和振型对车桥系统耦合振动的影响不能忽略，设计车速应该远离临界车速．
- 耦合振动 /
- 动态响应 /
- 共振 /
- 车辆-桥梁系统 /
- 共振临界车速
Abstract: By applying the sinusoidal wave mode to simulate the rugged surface of bridge deck,accounting for vehicle-bridge interaction and using Euler-Bernoulli beam theory,a coupling vibration model of vehicle-bridge system was developed. The modd was solved by mode analyzing method and Range-Kutta method,and the dynamic resporne and the resonance curve of the bridge were obtained It is found that there are two resonance regions,one represents the main resonance while the other the minor resonance,in the resonance curve. The influence due to the rugged surface,the vibration made of bridge,and the interaction between vehicle and bridge on vibration of the system were discussed. Numerical results show that the influence due to these parameters is so significant that the effeet of roughness of the bridge deck and the mode shape of the bridge can't be ignored andthe vehide velodty should be kept away from the critical speed of the vehicle.
- coupling vibration /
- dynamic resporne /
- resonance /
- Vekticle-bridge system /
- critical speed of vehide

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参考文献(11)

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