Back Analysis of Thermal Characteristics Parameters of Concrete and Its Application

A back analysis model is established for analyzing the thermal characteristics parameters of concrete, and an optimized back analysis process is programmed by using FEM simulative calculation and fixable tolerance method. Numerical examples shows the reliability of the calculation method, and it indicates a relatively rapid convergence. A project example is given in the paper for illustration. The obtaining of thermal characteristics parameter of concrete by optimized back calculation on the basis of site temperature observation values will become one of the effective way to partially or totally replace the parameters obtaining only from laboratory experiments.