Deformation and Stability Research of Cut-fill Subgrade of an Expressway in Gannan
In order to study the deformation and stability of the cut-fill subgrade,taking the cross-section of K318+298 of an expressway in Gannan as the research object,the numerical simulation method was used to conduct research in four aspects:maximum horizontal displacement,subgrade surface settlement and displacement,stability and strength-stress ratio.The results show that the maximum horizontal displacement occurs near the subgrade of the dynamic compaction fill slope,with a maximum value of 10.45mm.The settlement and displacement in the middle of the subgrade are the smallest,while the settlement,displacement and maximum shear strain of the subgrade near the fill area are the largest.The safety factor of the slope is 1.248,which meets the requirements of the specification.The strength-stress ratio of the slope soil in the fill area and the cut area is the smallest,and the junction of the compaction fill area and the cut slope is a potential failure area.The research results provide a reference for the design and protection of similar projects.
万方数据
维普
