Method for determining temperature action of statically indeterminate space structure based on indoor and outdoor temperature difference

The invention provides a statically indeterminate space structure temperature action determination method based on indoor and outdoor temperature difference, and belongs to the technical field of civil engineering. The method comprises the following steps: analyzing actual structures of the inner part and the outer surface of a building, and respectively establishing an inner structure model and an outer structure model of a statically indeterminate space structure; and then, respectively extracting thermal attributes, a temperature field distribution calculation area, an external wind environment and an external solar environment of a material used by the structure, carrying out temperature field iterative calculation according to a preset calculation precision requirement, and obtaining an indoor and outdoor temperature field distribution rule of the structure through numerical simulation analysis. Partitioning an external temperature field of the structure by using an indoor and outdoor temperature field d