The Analysis of Non-steady Temperature Field, Thermal Stress, Global Stress and Temperature Control for Roller Compacted Concrete Dam

Thermal Stress is the main stress of concrete dam. The finite element method is adopted in the emulation of thermal stress of roller compacted concrete gravity dam. The temperature field is calculated with explicit differential scheme. Solving of equations is not necessary and temperature on every time point can be calculated directly. The calculation of stress field for the dam includes the action of dead load, static hydraulic pressure, thermal stress, the self-volume deformation of different concrete, the elastic modulus changing in-time, the age the creep of concrete. Different Temperature control schemes are compared, and the optimal scheme is presented for engineering design and construction.