Finite Element Analysis of Environmental Vibration due to a High-speed Train Crossing Bridges
The high-speed train system provides us a swift communication ,but the vibration problem becomes an important issue. And the viaduct system is always the main choose for high -speed trains. Thus, investigating the behaviour of the building vibration by high -speed trains moving on bridges has been an important subject of research recently. In this paper, models include bridge, nearby building,soil and train. The solid element is used to represent the soil and piers. First,a new finite element method is applied to analyze the dynamical response of slab unballast track and bridge under a moving high-speed train. As an application of this model ,the dynamical characteristics of CRTSII track on bridge were analyzed. Based on the above calculations and via the software AN -SYS, the building vibration was analyzed. It shows: (1) the ambient ground vibration due to high -speed train across bridge decrease with distance away from pier. During the range of 040m the reduction is faster. And outside of this range the reduction change small. At the distance of 30m,there is a vibration amplifier region. (2) The building vibration due to high-speed train across will increase with increase of story. And by the further study ,the vertical acceleration of every story changes little with increase of story and this condition can be found in the finite element analysis.
Jian FANG Xiaoyan LEI Songliang LIAN Yuanxiang LI Song CHEN
School of Transportation Engineering ,Tongji University,Shanghai,201804,China Engineering Research Center of Railway Environment Vibration and Noise of the Ministry of Education,
国际会议
5th International Symposium on Environmental Vibration(第五届环境振动国际研讨会)
成都
英文
151-158
2011-10-20（万方平台首次上网日期，不代表论文的发表时间）