Calculation method for annual hourly temperature in subway tunnels
The annual hourly temperature in the subway tunnel under the basic working conditions is obtained by using the STESS simulation method,and through observing its characteristics,the functional form of the annual hourly temperature prediction model of the subway tunnel is obtained.The annual hourly temperature is the daily average temperature superimposed by daily hourly temperature fluctuation,in which the daily average temperature is a sinusoidal function and the daily hourly temperature fluctuation is a piecewise function of time.The working conditions considering different influencing factors are calculated,and the prediction formulas of three key parameters in the prediction model,namely,the annual average temperature,the monthly average temperature amplitude and the temperature fluctuation value during the daytime peak period,are given by the response surface method.The annual hourly temperature prediction model of subway tunnels is obtained,which takes into account the passenger number,carriage quality,brake recovery coefficient,thermal conductivity and heat capacity per unit volume of soil.
subwaytunnelannual hourly temperatureprediction modeldaily average temperaturedaily hourly temperature fluctuation
万方数据
维普
