This paper analyzes the thermodynamic parameters of the upper lock soleplate’s concrete. The three-dimensional finite element heat-transfer model, combined with genetic algorithm, is used to determine the heating rate formula of lock soleplate. Based on the formula, this paper numerically analyzes the three-dimensional transient temperature field of lock soleplate and compares the analyzed results with the prototype observed ones.The analyzed and compared results show that the maximum discrepancy in the time history between calculated values and prototype observed ones is 1.1% and that the results of inverse analysis could meet the project accuracy requirements. Also, it verifies that inverse analysis on the thermodynamic parameters of temperature rise law of concrete adiabatic combined with three-dimensional finite element and prototype observation is feasible. The process of inverse analysis displays that the rapidity of genetic algorithm makes up for the computation increased by three-dimensional model.