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综合运用缩尺模型试验、现场监测和SES数值模拟三种研究方法,分析研究地铁区间隧道速度场和温度场的特性。分析模型试验数据得到区间最大风速表达式和区间断面最大风速的滞后性。结合模型试验与数值模拟,研究得到列车匀速运行时,区间隧道风速基本不变;而列车变速运行时,区间各断面平均风速与时间成二次函数关系。通过现场监测和数值模拟等方法,分析得到地铁区间隧道温度场全天随时间变化可分为六个典型阶段;当车尾经过区间内某测点时,其温度最高。通过理论分析,建立了区间气温与壁温相互影响的数学模型,分析了不同季节区间气温和壁温的比较结果。
By using three methods of scale model test, on-site monitoring and SES numerical simulation, the characteristics of velocity field and temperature field of subway tunnel are analyzed and studied. The model test data is used to obtain the maximum wind speed in the interval and the lag of the maximum wind speed in the section. Combined with the model test and numerical simulation, the wind speed of the tunnel is basically unchanged when the train is running at a constant speed. When the train is running at a variable speed, the mean wind speed and the time of each section of the train are quadratic function. Through on-site monitoring and numerical simulation, it can be concluded that the tunnel temperature field in the metro area can be divided into six typical phases over the whole day. When the vehicle rear passes a measuring point in the interval, the temperature is the highest. Through the theoretical analysis, a mathematical model of the interaction between the interval temperature and the wall temperature was established, and the comparison results of temperature and wall temperature between different seasons were analyzed.