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在新疆严寒地区,日气温变幅较大,寒潮频发,对混凝土采取保温措施后,进行混凝土热学参数的反演过程中,根据以往的经验公式及简化计算,计算结果与实际误差较大。通过建立混凝土温度场的数学反演模型,推求混凝土的热学参数(导温系数、等效表面放热系数),并结合工程实例给出了求解过程。
In the severe cold area of Xinjiang, the daily temperature fluctuates greatly and the cold wave frequently occurs. In the process of inverting the thermal parameters of the concrete after the insulation measures are taken on the concrete, the calculation results and actual errors are large according to the past empirical formula and simplified calculation. By establishing the mathematical inversion model of concrete temperature field, the thermal parameters (thermal conductivity coefficient, equivalent surface heat release coefficient) of concrete are deduced, and the solving process is given with the engineering examples.