摘要
结合万州长江大桥铁路桥梁的特点,分别建立了车辆的三维离散自由度模型和桥梁的模态模型.通过轮轨作用关系建立了车桥耦合振动的动力模型,并对万州长江大桥的车桥耦合振动进行了研究.分析表明:主梁较柔的大跨度钢桁架桥梁,车辆高速行驶对其动力响应特别是横向动力响应影响显著.
Commbing with the characteristic of Wanzhou Yangtze River Bridge, the three-dimension discrete freedom model of vehicles and the mode model of bridge are established individually. Through the interactional relationship between the wheels and the tracks, the dynamic model of the coupling vibration of vehicles and bridge are established. The research with the response of coupling vibration of vehicles and bridge of Wanzhou Yangtze River Bridge is made. By analyzing, the conclusion here is that for the large-span steel truss bridge with the lower stiffness of the main girder, when the speed of vehicle is high, the dynamic response of the coupling of vehicles and bridge is obvious, especially the dynamic lateral response of the system.
出处
《华中科技大学学报（城市科学版）》
CAS
2004年第3期1-4,共4页
Journal of Huazhong University of Science and Technology
基金
国家自然科学基金重点资助项目(50038010).
