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Experimental investigation of the protective effect of wind barriers on high-speed railway bridge in inland strong wind area

机译:内陆强风区高速铁路桥梁防风罩防护作用的试验研究

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摘要

This study aims to investigate the wind protective effect of wind barriers on the Lanzhou–Xinjiang high-speed railway using wind tunnel tests. Wind barriers with different heights and porosities were analyzed. Two girders, that is, a box-girder and a trough-girder, each with 1:30 and 1:8 scales were experimentally investigated. The results suggest that the protective effect of the wind barrier with a height of 4 m and porosity of 20% is better than the others. The influence of wind barriers on the aerodynamic characteristics of train vehicles and girders must be analyzed simultaneously. The aerostatic force coefficients of trains are approximately the same at different scales, and the Reynolds number effect could be neglected.
机译:本研究旨在通过风洞试验研究风障对兰新高速铁路的防护作用。分析了不同高度和孔隙率的挡风玻璃。实验研究了两个梁,分别是箱形梁和槽形梁,它们分别具有1:30和1:8的比例。结果表明,高度为4μm,孔隙率为20%的挡风玻璃的防护效果优于其他挡风玻璃。必须同时分析风障对火车车辆和大梁空气动力学特性的影响。列车的空气静力系数在不同比例下大致相同,并且可以忽略雷诺数效应。

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