【摘要】：對(duì)正線列車高速通過(guò)進(jìn)站人行天橋時(shí),人行天橋在列車風(fēng)荷載作用下的振動(dòng)響應(yīng)進(jìn)行了研究。根據(jù)時(shí)均化的Reyholds平均Navier-Stokes方程進(jìn)行湍流數(shù)值模擬,并選取RNGk-ε湍流模型完成N-S方程的閉合,采用計(jì)算流體動(dòng)力學(xué)分析軟件Fluent完成高速列車過(guò)站時(shí)的三維紊態(tài)外流場(chǎng)的模擬,從而得到列車高速通過(guò)人行天橋時(shí),作用在天橋表面上的風(fēng)荷載時(shí)程曲線。最后通過(guò)有限元分析軟件Ansys將已模擬的列車風(fēng)荷載作用在人行天橋的表面,得到人行天橋的振動(dòng)響應(yīng)。結(jié)果表明,當(dāng)列車高速通過(guò)進(jìn)站人行天橋時(shí),列車風(fēng)對(duì)人行天橋的舒適度影響較大。
[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，

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