铁道标准设计2019，Vol.63Issue(1)：15-20,6.DOI:10.13238/j.issn.1004-2954.201803140003
高速铁路无砟轨道结构温度与大气温度关系试验研究
Experimental Study on the Relationship between High-speed Railway Ballastless Track Temperature and Atmospheric Temperature
摘要
Abstract
In order to investigate the relationship between high-speed railway ballastless track temperature and atmospheric temperature, the shading temperature time travel curves of CRTSII track structure are obtained based on 2 years' measured data and by using time series difference method to separate the impact of sunlight action. Through statistical analysis, an annual uniform temperature spectrum concept is proposed and fourier series are fitted to study the relation function between track structure uniform temperature and atmospheric temperature, and to conduct forecasting with historical atmospheric temperature records of 50 years. The results show that shaded temperatures of each track structure are close and could be indicated by an uniform annual temperature spectrum fourier formula. The annual uniform temperature is 21. 73 ℃, the annual temperature range ability is 12. 27 ℃ and the period is367 days. Track structure-atmospheric temperature relationship could be expressed by a linear function which is similar to Euro Code, but somewhat larger by 1. 07 ℃ for high temperature and 2. 32 ℃ for low temperature. The maximum and minimum track construct uniform temperature representative values with recurrence interval of 50, 100, 150 and 300 years are 42. 42, 44. 36, 45. 42, 47. 09 ℃ and 4. 45, 0. 7, -1. 39, -5. 21 ℃ respectively.关键词
无砟轨道/温度作用/大气温度关系/试验研究Key words
Ballastless track/Temperature action/Atmospheric temperature relationship/Experimental study分类
交通工程引用本文复制引用
王明芳..高速铁路无砟轨道结构温度与大气温度关系试验研究[J].铁道标准设计,2019,63(1):15-20,6.基金项目
国家自然科学基金项目(41272377) （41272377）
