CAJ | 학술논문

为研究大气环境下高速铁路无砟轨道结构温度分布和温度场变化规律，建立利用气象数据资料描述环境因素的边界条件，以求解无砟轨道结构温度场热传导方程。利用京沪高速铁路 CRTS-Ⅱ型轨道板现场实测的温度分布数据，验证本文用于轨道结构温度场的计算公式，分析气象数据资料变化引起的轨道结构温度分布和温度场变化规律。对比结果表明，本文推导得到的计算公式能够准确、有效的用于无砟轨道结构温度场的计算。京沪高速铁路无砟轨道结构现场实测和计算的结果表明：其夏季最大正温度梯度在12：00~14：00左右，最大负温度梯度在3：00~5：00左右。影响因素分析表明太阳辐射、风速和气温变化是影响轨道结构内部温度分布状况的主要因素。
위연구대기배경하고속철로무사궤도결구온도분포화온도장변화규률，건립이용기상수거자료묘술배경인소적변계조건，이구해무사궤도결구온도장열전도방정。이용경호고속철로 CRTS-Ⅱ형궤도판현장실측적온도분포수거，험증본문용우궤도결구온도장적계산공식，분석기상수거자료변화인기적궤도결구온도분포화온도장변화규률。대비결과표명，본문추도득도적계산공식능구준학、유효적용우무사궤도결구온도장적계산。경호고속철로무사궤도결구현장실측화계산적결과표명：기하계최대정온도제도재12：00~14：00좌우，최대부온도제도재3：00~5：00좌우。영향인소분석표명태양복사、풍속화기온변화시영향궤도결구내부온도분포상황적주요인소。
A solution to the thermal conduction transfer process was developed to calculate the temperature dis-tribution of the ballastless track structure subjected to an atmospheric environment.The comparison of the temperature distribution of the CRTS-Ⅱ track slab measured on site of the Beijing-Shanghai High-speed Rail-way with the temperature field calculated with the above solution shows as follows:The calculation method is accurate and effective in pursuit of the temperature distribution of the ballastless track structure;the maximum positive temperature gradient appears at 12:00 am~2:00 pm and the minimum negative temperature gradient appears at 3:00~5:00 am;solar radiation,wind speeds and air temperatures are the main factors effecting the temperature distribution inside the ballastless track structure.