华东交通大学学报Issue(2)：26-31,6.
高速列车引起的深水桥墩流固耦合的振动分析
Vibration Analysis of Deepwater Bridge Pier Based on Fluid-Solid Interaction Caused by High-speed Train
摘要
Abstract
To research the effect of water on the vibration characteristics of bridge pier structure, this study built a bridge pier-water fluid-solid interaction finite element model based on the computing platform of ANSYS, calcu-lated the natural frequency of the bridge pier at different water depths, and then analyzed effects of water depths on the bridge pier vibration characteristics under the role of high-speed train. The conclusions drawn from the analysis were:when the water depth was less than 50%height of the pier, the natural frequency of bridge pier did not decrease significantly;when the water depth was higher than 50%height of the pier, the natural frequency of bridge pier reduced obviously;under high-speed train, with the increase of the water height the time of the longitu-dinal displacement extreme appeared lingeringly and the longitudinal acceleration of the pier increased. There-fore, it concludes that water structure has obvious effects on the static and dynamic vibration characteristics of bridge pier, which can not be neglected.关键词
自振频率/激振力/流固耦合/纵向位移/纵向加速度Key words
natural frequency/exciting force/fluid-solid interaction/longitudinal displacement/longitudinal acceler-ation分类
交通工程引用本文复制引用
卢华喜,李军,周叶威,梁平英..高速列车引起的深水桥墩流固耦合的振动分析[J].华东交通大学学报,2014,(2):26-31,6.基金项目
国家自然科学基金项目（50968007）；江西省青年科学家培养对象计划 （）
