摘要
列车快速通过站台屋盖区时产生的列车风作用会对屋盖结构表面的风压产生较大的影响,从而影响结构的安全性能。本文利用CFD数值模拟手段,采用Fluent中动网格和滑动网格技术对单向列车快速通过站台区的全过程进行了模拟研究,得到了列车行进过程中不同阶段屋盖上、下表面的压力分布特点,并分析了屋盖表面关键点的风压随时间变化关系,通过对列车过站过程中压力波的传递对屋盖结构表面的压力分布影响进行定量评估,为设计单位提供具有参考价值的结论和建议。
The wind brought by the high-speed trains when passing through the station may cause non-normal pressure distribution on t he roofs above the platform.In this paper,by the way of CFD simulation,the dynamic and sliding meshes grid method are used to simulate the entire process of a one-way train through the station quickly.And the pressure distribution both on and under the roof at different stages of the passing process has been gained.The pressures of some key points on the roof varying with the time history have been analyzed too.Through assessment of the impact on the platform roof structure by the wind caused by train-movements,valuable reference with the conclusions and recommendations are supplied to the designers.
出处
《广东土木与建筑》
2013年第3期55-57,60,共4页
Guangdong Architecture Civil Engineering
关键词
列车风
压力波传递
结构风压
wind caused by train
pressure wave propagation
wind pressure on structure
