复杂地形下铁路峡谷交汇处风速分布规律及测风站选址建议
Wind speed distribution patterns and anemometer station siting recommendations at railway canyon confluences in complex terrain
摘要
Abstract
To enhance railway transportation safety in confluent canyon regions under strong wind conditions,a typical section of complex terrain along the Southern Xinjiang Railway was taken as an example and the Realizable k-ε turbulence model was adopted to numerically simulate the wind speed distribution near the canyon confluence.By analyzing the characteristics under different incoming wind directions,the relationships between wind speeds from individual canyons were investigated.Based on these findings,recommendations were proposed for siting anemometer stations and bridges in such areas,clarifying applicable conditions for bridges spanning either both upstream canyons or the confluence directly.A lateral positioning method for anemometer stations was established using the"wind direction frequency-weighted average of normalized wind speed"as an indicator.The results show that the alignment between the incoming wind direction and the canyon orientation is the main factor affecting the wind speed distribution.When they align closely,the wind speed inside the canyon is higher and the flow is stable;otherwise,it is lower and more turbulent.Specifically,if the incoming wind direction aligns with one upstream canyon,the wind speed at the confluence is 0.943 4±0.011 7 times that in that canyon.If it differs significantly from both upstream canyon orientations,the confluence wind speed is higher and mainly controlled by the upstream canyon with the stronger wind.For the studied topography,the recommended stations in the two upstream canyons and at the confluence should be positioned at 0.60,0.55,and 0.25 times the canyon width from the windward side,respectively.This layout increases observed wind speed by 19.8%and reduces monitoring error from 17.4%to 1.1%compared to the existing stations.The outcomes provide theoretical and engineering references for windproof design of railways in complex terrain.关键词
铁路/复杂地形/峡谷交汇/风速分布/测风站选址/数值模拟Key words
railway/complex terrain/canyon confluence/wind speed distribution/anemometer station siting/numerical simulation分类
交通工程引用本文复制引用
刘堂红,万子颖,高鸿瑞,陈晓栋,陈争卫,梁习锋..复杂地形下铁路峡谷交汇处风速分布规律及测风站选址建议[J].中南大学学报（自然科学版）,2026,57(6):2495-2508,14.基金项目
国家自然科学基金资助项目(U24B20123) （U24B20123）
国家自然科学基金委员会基础科学中心项目(52388102) （52388102）
湖南省科技创新计划项目(2022RC3040) （2022RC3040）
中国铁路乌鲁木齐局集团有限公司科技研究开发计划项目(2026-kj-35) （2026-kj-35）
中南大学中央高校基本科研业务费专项资金资助项目(2026ZZTS0920) （2026ZZTS0920）
中南大学高性能计算中心资助课题(2026)(Project(U24B20123)supported by the National Natural Science Foundation of China （2026）
Project(52388102)supported by the National Natural Science Foundation of China-Fundamental Science Center （52388102）
Project(2022RC3040)supported by the Science and Technology Innovation Program of Hunan Province （2022RC3040）
Project(2026-kj-35)supported by the Technology Research and Development Program of China Railway Urumqi Group Co.Ltd. （2026-kj-35）
Project(2026ZZTS0920)supported by the Fundamental Research Funds for the Central Universities of Central South University （2026ZZTS0920）
Project(2026)supported by the High Performance Computing Center of Central South Universtiy) （2026）
