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混凝土边界传热过程的确定是混凝土温度场分析的关键,是研究混凝土结构温控防裂问题的重要方面之一。以标准遗传算法为基础,对该算法的缺陷提出相应的改进方法,并编制程序。在工程条件下,进行非绝热状态下的温度试验,获得实测温度数据。然后,利用改进遗传算法,对实测数据进行温度场的反演计算,并将计算值与实测值进行比较,分析反演结果的合理性,从而获得与工程条件相符的不同物盖条件下的混凝土边界热交换系数,以供类似工程参考。
Determination of the heat transfer process of concrete boundary is the key to the analysis of temperature field of concrete and is one of the most important aspects to study the temperature control and crack prevention of concrete structure. On the basis of standard genetic algorithm, this paper puts forward the corresponding improvement methods to the defects of the algorithm and compiles the program. Under engineering conditions, the temperature test under non-adiabatic conditions was performed to obtain the measured temperature data. Then, the improved genetic algorithm is used to calculate the temperature field of the measured data. The calculated values are compared with the measured values to analyze the reasonableness of the inversion results to obtain the concrete with different cover conditions in accordance with the engineering conditions Boundary heat exchange coefficient for similar engineering reference.