西南交通大学学报2011，Vol.46Issue(3)：385-390,6.DOI:10.3969/j.issn.0258-2724.2011.03.005
南广高速铁路郁江大桥车桥耦合振动仿真分析
Simulation of Vehicle-Bridge Coupling Vibration for Yujiang River Bridge on Nanning-Guangzhou High-Speed Railway
摘要
Abstract
In order to research the coupled vibration effects when a train runs through a long-span twin tower steel truss cable-stayed bridge at a high speed to provide a reference for the design of the same type of bridges, a numerical simulation model for coupled vibration was set up by taking Yujiang River bridge, a long-span steel truss cable-stayed bridge, on Nanning-Guangzhou high-speed railway as a study object. A dynamic analysis model for the bridge was established with the finite element software ANSYS, and its natural vibration properties were analyzed. A spatial dynamic model for German ICE3 train was set up by the multi-system dynamics software SIMPACK. The spatial coupled vibration responses of a vehicle-bridge system under the conditions of different strain speeds were calculated by co-simulation based on the SIMPACK and the ANSYS. The results show that when a strain runs respectively at a speed of 250, 270, 290 or 300 km/h, all its safety indexes can meet standard requirements, Sperling comfort indexes of motor car and trailer both are less than 2.5. The maximum vertical and lateral deflection-span ratios are respectively 1/1 843 and 1/83000, the maximum vertical and lateral accelerations are 0.386 and 0.107 m/s2 , respectively, and the maximum impact coefficient is 1.200. A1l these indexes show that the bridge has a sufficient rigidity, and its vibration is in good condition.关键词
郁江大桥/大跨度钢桁斜拉桥/耦合振动/联合仿真/多体系统动力学/有限元法Key words
Yujiang River bridge/ long-span steel truss cable-stayed bridge/ coupled vibration/ cosimulation/ multi-body system dynamics/ finite element method分类
交通工程引用本文复制引用
崔圣爱,单德山,祝兵..南广高速铁路郁江大桥车桥耦合振动仿真分析[J].西南交通大学学报,2011,46(3):385-390,6.基金项目
国家自然科学基金资助项目(51078316) （51078316）
中央高校基本科研业务费专项资金资助项目(SWJTU09BR009) （SWJTU09BR009）
西南交通大学青年教师科研起步项目(2009Q069)资助. （2009Q069）
