Early concrete temperature field change drastically,and its process of heating and heat conduction performance is closely related to the hydration process. Considering the concrete adiabatic temperature rise equation,thermal parameters and boundary conditions of three aspects, the early concrete thermal parameters optimization and accurate temperature field simulation were researched.On the basis of indoor test,using the Python language to write the program optimization inversion based on genetic algorithm,the thermal field subroutine of ABAQUS was embedded into the genetic algorithm,and the adiabatic temperature rise equation parameters were optimized. Considering the coefficient of thermal conductivity and specific heat change and based on the hydration degree,a subroutine of thermal parameters was developed.The above research results was applied to a project example, and the results showed that the change of thermal parameters has important influence on temperature field distribution of early concrete,the thermal parameters considering hydration degree of condition than that without considering the parameter change of conditions, the internal temperature of the pile caps peak increases 7.28%, the highest surface temperature increased by 14.30%, the temperature difference between inside and outside increases 3.81%,and the scope of the higher temperature difference between inside and outside is bigger.Research can be more accurate in the prediction of structure early stress and cracking.
