X-Ray-based asphalt concrete three-dimensional finite element modeling method

The invention discloses an X-Ray-based asphalt concrete three-dimensional finite element modeling method, which comprises the following steps of: performing related processing on an X-RayCT continuous scanning graph of a cross section of an asphalt concrete test piece by utilizing Mimics software, and reconstructing a three-dimensional model of aggregate and a three-dimensional model of the sum of asphalt and the aggregate; then, the asphalt is imported into 3-Matic, and a three-dimensional model of the asphalt is obtained through Boolean operation; then, performing Boolean operation on the three-dimensional models of the aggregate, the asphalt and the sum of the asphalt and the aggregate and a model established in advance, and cutting three-dimensional models of the asphalt, the aggregate and gaps with corresponding sizes; the method comprises the following steps: respectively dividing a surface grid and a volume grid, then assembling, and finally importing an asphalt mixture model for generating the volume