Simulation analysis of temperature field and thermal stress of Maduhe RCC arch dam

Taking the practice in construction of Maduhe Hydropower Station as an example,the 3-D finite element method is used to simulate the temperature field and thermal stress field of Maduhe RCC arch dam during construction and operation periods.In the analysis,2 schemes of water cooling and non-cooling are considered.The analysis results demonstrate that the distribution of temperature and stress laws are the same,for non-cooling scheme,the maximum concrete temperature reaches 36.5 ℃,higher than the required maximum control temperature of 36℃.The simulated space-time distribution law of temperature field and stress field in construction and operation periods provide favorable reference for temperature control design of the RCC arch dam.