Engineering progress three-dimensional simulation method based on BIM model dynamic combination

The invention discloses an engineering progress three-dimensional simulation method based on BIM model dynamic combination. The method comprises the following steps: step 1, carrying out BIM modeling and subdivision based on a BIM minimum unit division scale; 2, compiling a progress plan and feeding back an actual progress; 3, binding the WBS operation with the minimum unit of the BIM model; 4, progress plan change conditions are monitored; when the progress plan changes, returning to the step 2, re-compiling the progress plan, generating new WBS information, and associating the actual progress information; when the progress plan does not change, skipping to step 5; and 5, performing BIM progress three-dimensional simulation. According to the method, the defects that the BIM image of the progress plan is not presented in time and the labor cost is relatively high due to the fact that modeling needs to be carried out again when the progress plan is changed in an existing method are overcome; the method has the