When the load boundaries vary with time and under the dynamics loads, the mesh generator can derefinement and re-refinement dynamically mesh with moving of stress concentration region.
The influences of movingload on shear stress and bending moment are analysed by static characteristics, and the reliability of crane is studied with MonteCarlo method.
The time-history curve of stress, stress path and curves of the principal stress axes rotation of soil element under and beside the loadmoving line are presented.