| This article based on the finite element theory, with large general-purpose finite element software ANSYS, analysised that road surface differential settlement caused by underground structure of urban road. According to actual road conditions and boundary conditions, a reasonable finite element model was created. The laws that pavement structures were affected by pipeline trench backfill modulus and pipe depth were researched. The results show that the road surface had differential settlements because of the road structure of the local stiffness was changed by the underground structures. Under the vehicle load, the laws that the different underground pipeline depth and backfill modulus affect the load surface settlement and internal forces of the asphalt roads are revealed. A theoretical basis for the road structure design and construction on the top of the underground structures is provided. Finally, ANSYS software is redevelopmented with combination of subjects studied in this paper. Special finite element program is redevelopmented in the ANSYS environment. This research project is more convenient. |
