| In order to reduce the subgrade settlement,the roadbed and pavement strength and the structure are stable,and the roadbed packing and the control of the roadbed construction are strictly chosen.Rainfall is the main cause of the damage to the collapsible loess highway in the loess region of Shanxi Province,and the influence of the wetness on the highway has formed a consensus on the project and has been widely valued.The modulus of resilience tester,and the evaluation of the pavement material strength tester modulus of resilience and bearing ratio,combined with liquid plastic limit of soil samples,the soil dry density,optimum moisture content,degree of compaction,compression coefficient and the analysis of the basic physical parameters such as compression modulus than the correlation of CBR and resilient modulus E0,and on the basis of reasonable of collapsible loess CBR value;Then with the help of three to the grid as a substitute for reinforcement materials reinforcing collapsible loess,using side inclined tube and the deformation displacement meter and so on test system analysis of loess roadbed fill in reinforced deformation characteristics,at the same time with the help of numerical simulation software to calculate the loess area roadbed fill reinforced three-dimensional elastic deformation characteristics,test and verify the reliability of the experimental results,form a collapsible loess subgrade treatment technology.Through the objective of the research can form in collapsible loess CBR recommended list,form a collapsible loess subgrade treatment technology,guide the loess area highway construction and maintenance,promote the development of transportation industry,for the society brings good economic,social and environmental benefits. |
