铁道标准设计2025，Vol.69Issue(10)：111-117,7.DOI:10.13238/j.issn.1004-2954.202508010001
寒区铁路隧道温度场解析解及抗冻设防长度研究
Analytical Solution of Temperature Field of Cold-Region Railway Tunnels and Research on Frost-Resistance Fortification Length
摘要
Abstract
To address the challenge of predicting the temperature field in cold-region tunnels,this study established a thermal-fluid-solid coupled model for the railway tunnel temperature field,incorporating the effects of natural wind,based on freezing damage investigations and measured temperature field data from 32 railway tunnels along a typical cold region line.The influences of external air temperature,surrounding rock temperature,and external wind speed on the tunnel temperature field were analyzed,and the variation of the frost-resistance fortification length was investigated.The results showed that the temperature fields of cold-region tunnels could be categorized into two types:symmetric and asymmetric.The symmetric type was characterized by low wind speed and no dominant wind direction at both tunnel portals,a height difference between the two portals generally less than 50 m,and no distinct difference between sunlit and shaded sides.For the asymmetric type,the height difference between the two portals was typically greater than 50 m,and the temperature field inside the tunnel was significantly affected by the dominant wind.Theoretical calculations demonstrated that for a symmetric temperature field distribution,the frost-resistance fortification length was inversely proportional to the external air temperature and the surrounding rock temperature.Specifically,as the external air temperature and ground temperature decreased,the frost-resistance fortification length increased.For an asymmetric temperature field distribution,the frost-resistance fortification length was positively correlated with the external dominant wind speed.Under the influence of the dominant wind direction,the frost-resistance fortification length increased with increasing wind speed.The research results can provide theoretical guidance for predicting the temperature field and determining the frost-resistance fortification length of tunnels in cold regions.关键词
寒区隧道/温度场/自然风影响/解析解/设防长度Key words
cold-region tunnels/temperature field/natural wind influence/analytical solution/fortification length分类
交通工程引用本文复制引用
王伟,田四明,刘建友,齐辉,高焱..寒区铁路隧道温度场解析解及抗冻设防长度研究[J].铁道标准设计,2025,69(10):111-117,7.基金项目
国家自然科学基金项目(51778380) （51778380）
国家自然科学基金铁路基础研究联合基金(U2268214) （U2268214）
