Study on the Influencing Factors and Control Measures of Deferential Settlement of Steep Slope Subgrade
Based on the real proj ect,variance analysis was used for analyzing the deferential settlement data of steep slope subgrade using the orthogonal experimental design.The results demonstrate that the influence degree follows by:depth of fill>gradient of slope>soil property.Then,based on the regression equation and the response surface plot,the effect of three factors on settlement of steep slope subgrade was revealed directly.Finally,FLAC3D was used to simulate the deferential settle-ment of steep slope subgrade with laying and not laying the geotechnical grille.The results show that the deferential settlement of steep slope subgrade was reduced by 33% after laying the geotechnical grille,which indicates that laying the geotechnical grille is able to effectively reduce the deferential settlement of steep slope subgrade.