To effectively enhance the bearing capacity of geogrid reinforcement layers under cyclic loading,this study investi-gates the optimal placement of geogrids in road subgrades considering two subgrade thicknesses and circular loading areas of three different radii.A comprehensive analysis using three-dimensional finite element analysis and theoretical methods is conducted.The results indicate that,regardless of subgrade thickness,the strongest resistance to deformation in the subgrade occurs when the geogrid is buried at a depth equal to half the radius of the loading area;If the geogrid is placed at the position of maximum vertical strain,the thickness of the road subgrade can be appropriately reduced;Placing the geogrid at the interface between the aggregate base and the subgrade significantly diminishes its reinforcement effectiveness.
关键词
土工格栅/道路基层/有限元/循环荷载/优化设置
Key words
geogrid/road base/finite element analysis/cyclic load/optimize settings
维普
万方数据