【摘要】 用化学反应速率描述温度对混凝土绝热温升的影响,求解基于等效时间的非线性热传导方程,对龙滩水电站碾压混凝土坝的温度场和徐变应力场进行了仿真计算。研究表明,对于夏季和冬季浇筑的混凝土,采用基于等效时间的混凝土绝热温升理论和传统理论的计算结果有较大差异。更多还原

【Abstract】 In this paper, hydration rate is adopted to describe the combined effect on adiabatic temperature rise, which is a function of temperature and equivalent time. A new non-linear heat conduction equation based on equivalent time is advanced and applied to solve the temperature field and stress field of Longtan RCC dam. The study shows that there is difference between the results computed by use of the heat conduction equation based on equivalent time and traditional heat conduction equation during winter and summer construction .更多还原