Temperature control three-dimensional simulation sensitivity analysis of RCC dam during construction time in cool spell region

The temperature field and stress field of RCC dam during construction time were calculated in complete simulation by using the calculation means of "negative heat of hydration" and "volumetric force method" and so on as well as adapting the e-variable temperature stress calculation finite-element method which considered concrete creep influence in connection with the construction temperature control requirement of RCC dam in cold spell region. Yunnan lead factory hydropower station RCC dam was used for the instance, fluctuating main temperature control parameters to proceed simulation calculation and sensitivity analysis about the outcome, which drew the influence that main temperature control parameters had on dam crack, meanwhile, sensitivity curves were fitted via adapting Lagrangian method, cutoff value and surplus cutoff value of temperature control parameters were worked out while the best program results were found out. It has been applied to the actual projects and has reference value for similar programs of other projects to choose.