Research on Model Test and Numerical Simulation of Differential Settlement Control of Loess Subgrade Widening Project
Relying on the new and old loess subgrade splicing project of Xinjiang G 577 line,the combination of indoor model test and numerical simulation is used to study the influence of geogrid reinforcement at the splicing part of new and old subgrade,the laying position and number of layers of geogrid on the settlement deformation.The results show that:the deformation of each measuring point of the new and old loess subgrade after geogrid reinforcement decreases,and the deformation reduction of the new subgrade is greater than that of the old subgrade.When laying the single-layer geogrid,the settlement of the geogrid at the first step is the smallest,and the settlement amount is 3.81cm,and when laying the multi-layer geogrid,the first step and the second step are laid at the same time,and the effect of economic cost and settlement control is the best.
Loess subgradeWidening projectSplicing of new and old roadDifferential settlementGeogrid
万方数据
维普
