恶劣的气候条件对混凝土质量影响很大,考虑到核电站结构的重要性,有必要以瞬态热传导方程和水化热模型为基础,建立三维有限元模型进行分析。本文以恰希玛三期工程为对象,通过对大体积混凝土的温度场进行计算和分析,得出其温度场分布规律,防止有害温度裂缝产生,为类似核电站大体积混凝土设计与施工提供参考。 Adverse weather conditions have a great impact on the quality of concrete. Considering the importance of nuclear power plant structure, it is necessary to establish a three-dimensional finite element model based on the transient heat conduction equation and hydration heat model. In this paper, the third phase of Chashima project is taken as an object. Through the calculation and analysis of the temperature field of mass concrete, the temperature field distribution law is obtained to prevent the occurrence of harmful temperature cracks, which provides a reference for the design and construction of mass concrete in similar nuclear power plants.