人行天桥在正线列车通过时的风振响应分析
发布时间：2019-05-17 04:24
【摘要】：对正线列车高速通过进站人行天桥时,人行天桥在列车风荷载作用下的振动响应进行了研究。根据时均化的Reyholds平均Navier-Stokes方程进行湍流数值模拟,并选取RNGk-ε湍流模型完成N-S方程的闭合,采用计算流体动力学分析软件Fluent完成高速列车过站时的三维紊态外流场的模拟,从而得到列车高速通过人行天桥时,作用在天桥表面上的风荷载时程曲线。最后通过有限元分析软件Ansys将已模拟的列车风荷载作用在人行天桥的表面,得到人行天桥的振动响应。结果表明,当列车高速通过进站人行天桥时,列车风对人行天桥的舒适度影响较大。
[Abstract]:The vibration response of pedestrian overpass under train wind load is studied when the main train passes through the pedestrian overpass at high speed. According to the time-averaged Reyholds mean Navier-Stokes equation, the turbulence numerical simulation is carried out, and the RNGk- 蔚 turbulence model is selected to complete the closure of the N 鈮，
本文编号：2478801
[Abstract]:The vibration response of pedestrian overpass under train wind load is studied when the main train passes through the pedestrian overpass at high speed. According to the time-averaged Reyholds mean Navier-Stokes equation, the turbulence numerical simulation is carried out, and the RNGk- 蔚 turbulence model is selected to complete the closure of the N 鈮，
本文编号：2478801
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