Static analysis and dynamic analysis combined overlying water area site modeling method

The invention provides an overlying water area site modeling method combining static analysis and dynamic analysis, which comprises the following steps: establishing a soil geometric model, inputting material parameters of soil, adding water components on the basis of the soil geometric model, defining boundary conditions and load, and inputting the material parameters of water. And extracting the reaction force of the side boundary and the bottom boundary, adding the reaction force to the nodes of the corresponding boundaries again, adding a viscoelastic boundary, inputting the seismic dynamic load in the form of equivalent node force, and taking the result of the site after the ground stress is balanced as the initial field of power calculation to obtain an overlying water area site model. According to the overlying water area site modeling method combining static analysis and dynamic analysis, firstly, crustal stress balance is completed, dynamic calculation is conducted by taking the crustal stress balanc