铁道科学与工程学报2016，Vol.13Issue(8)：1457-1465,9.
沙尘暴环境对高速铁路挡风墙设置的影响
Influence of sandstorms on the setting of wind-break wall of high-speed railway
摘要
Abstract
Sandstorm has a serious influence on the safe operation of a train.In order to ensure the safety,wind-break wall is a necessary measure.Based on the Eulerian two-fluid model and the lower atmospheric boundary layer crosswind model,a numerical simulation method was used to stimulate how sandstorms impacted on the set-ting of wind-break wall,such as the height and the distance,when a high-speed train traveled at different speeds and under different levels of sandstorms.The results show as follows:compared with only wind conditions,aerodynamic forces of a train affected by sandstorms are different,after considering the effect of sand,overturning moment increases.Therefore the effect of sandstorms should be considered in the research.Op-timal height should be increased after consideration of it.When the distance is settled,the train turns from lee-ward side to windward side as the wall’s height increases.When the height is settled,the train turns from wind-ward side to leeward side with the increase of the wall’s distance.When the distance is settled,the optimal height of the wind-break wall increases with the increased speed of the train,but decreases with the increased levels of sandstorm.When the height is settled,the optimal distance increases with the increased speed of the train,but decreases with the increased levels of sandstorm.And there is a quadratic relationship between the op-timal heights and distances of wind-break wall.关键词
铁路工程/挡风墙/数值模拟/高速列车/沙尘暴Key words
railway engineering/wind-break wall/numerical simulation/high-speed train/sandstorm分类
交通工程引用本文复制引用
牛波,杜礼明..沙尘暴环境对高速铁路挡风墙设置的影响[J].铁道科学与工程学报,2016,13(8):1457-1465,9.基金项目
国家自然科学基金资助项目 （）
