Influence of the Cold Wave on the Temperature Stress During the Construction Period on Roller Compacted Concrete Arch Dam

Regarding a roller compacted concrete arch dam project,the well-known FEM software ANSYS is used to model and apply the life and death element to simulate the casting of concrete.In the light of the actual engineering construction progress and thermodynamic parameters of roller compacted concrete,three working conditions(without cold wave,with cold wave,with the surface heat prevention) are simulated and calculated.The results show that the cold wave has great influence on the superficial temperature and the maximum principal stress of the dam and easy to cause the surface crack,the effects of the cold wave can be significantly reduced by adopting the superficial heat prevention to the roller compacted concrete arch dam which can provide the important reference for the temperature control design of the roller compacted concrete arch dam during the construction period.