活塞风对寒区高铁隧道衬砌结构传热影响分析  

Effects of piston action on heat transfer in lining structures of high-speed railway tunnels in cold regions

作　　者：姜海强 牛富俊 汪恩良 何嘉睿 蒋望涛 JIANG Haiqiang;NIU Fujun;WANG Enliang;HE Jiarui;JIANG Wangtao(School of Water Conservancy and Civil Engineering,Northeast Agricultural University,Harbin 150030,China;State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510640,China;South China Institution of Geotechnical Engineering,South China University of Technology,Guangzhou,510640,China)

机构地区：[1]东北农业大学水利与土木工程学院,黑龙江哈尔滨150030 [2]华南理工大学亚热带建筑科学国家重点实验室,广东广州510640 [3]华南理工大学华南岩土工程研究院,广东广州510640

出　　处：《哈尔滨工程大学学报》2025年第2期243-251,共9页Journal of Harbin Engineering University

基　　金：东北农业大学青年才俊项目(22QC08);新疆生产建设兵团科技计划项目(2024AB079);黑龙江省自然科学基金项目(LH2023D001);中铁隧道局重大科研项目(201805)。

摘　　要：针对寒区高铁隧道频繁发生的冻害问题,本文结合隧址区现场监测数据,对两车交会情形下最冷日内隧道洞内外空气和隧道结构层的传热过程进行模拟和分析,并探讨了车速(80~250 km/h)和洞外气温(-4~-30℃)对结构层和洞内空气传热过程的影响,得出以下结论:最冷日隧道洞内空气和结构层内部温度沿纵向方向大体上呈现出对称性,并且在洞口处温度相对较低,活塞风不会改变洞内气温和结构层内温度的整体分布趋势。洞外气温和车速对洞口段附近处的空气温度和二衬内部温度影响较大,且洞外气温越低、车速越大,洞内空气和二衬内部的温度降低越明显。洞外气温对隧道结构层温度影响主要集中在距离隧道洞口500 m范围内,而车速对结构层内温度影响的最大纵向长度则可达1 000 m。Considering the frequent frost damage issues in cold-region high-speed railway tunnels,this study combined on-site monitoring data from the tunnel site to simulate and analyze the heat transfer process between the inside and outside air and the tunnel structure under the scenario of two trains passing in opposite directions on the coldest day.Furthermore,the effects of train speed(80~250 km/h)and external air temperature(-4℃to-30℃)on the structural layers and heat transfer process inside the tunnel were investigated.The conclusions are as follows:the air temperature inside the tunnel and the temperature within the structural layers are symmetrically distributed along the longitudinal direction throughout the tunnel.Moreover,the temperature is relatively lower at both ends of the tunnel,and the piston wind does not affect the distribution of air temperature or the temperature inside the tunnel′s structural layers.However,the outside air temperature and train speed greatly influence the air temperature near the tunnel entrance and the internal temperature of the secondary lining.Specifically,as the outside air temperature decreases and train speed increases,the drop in temperature within the tunnel and the secondary lining becomes more pronounced.The main influence range of outside air temperature extends up to 500 m from the tunnel entrance,whereas the maximum longitudinal impact of train speed on the temperature within the structural layers can reach up to 1000 m.

关 键 词：寒区 温度分布 高铁隧道 传热过程 活塞风 冻害 数值模拟 衬砌结构 

分 类 号：U25[交通运输工程—道路与铁道工程]