Study on Settlement Deformation Laws of High-Speed Railway Cutting under Excavation Unloading Effect

Based to the design scheme of the typical high-speed railway cutting and the correlation rheological theory, the numerical model on the high-speed railway cutting settlement deformation under excavation unloading effect is established with suitable geometric and mechanical parameters. Some calculation cases are designed to study the rebound deformation laws of the cutting under excavation unloading effect. Through analyzing the settlement deformation data of different conditions, the settlement deformation laws are revealed with different soil parameters, unloading stress, thickness of compressed layer and characteristic time point. This study will provide some reference for the excavation design and the settlement deformation evaluation of the high-speed railway cutting.