黏性路基土永久变形影响因素显著性研究

以路基永久变形影响因素显著性为研究目的,选用上海地区崇明岛粉质黏土作为研究对象,通过正交法设计试验方案,完成了9种工况的室内重复动载三轴试验,并用极差法分析试验结果,得到了四种影响因素（偏应力、围压、含水率、压实度）对路基永久变形的主次影响关系,以此提出了相应的路基永久变形控制途径和措施。

Significant InfluenceFactors on Permanent Deformation of Clay Subgrade Soils

For researching significance influence factor on permanent deformation of subgrade,Chongming Island silty clay in Shanghai area was chosen as the research object.With orthogonal experimental design,the indoor repeated dynamic load triaxial test in 9 working conditions has been completed,and the experimental results analysed with the method of range analysis.The influence sequence of four factors(Deviatoric Stress,Confining Pressure,Moisture Content,Compactness) were summarized,hereby puts forward the corresponding control ways and measures of the permanent deformation of subgrade.