Research on Expressway Subgrade Settlement and Treatment Measure
Taking the expressway project as the research object,this paper summarizes the causes and treatment measures of subgrade settlement,and analyzes the vertical cumulative settlement and horizontal lateral displacement of subgrade through on-site monitoring.The results show that:Subgrade settlement can be reinforced by base treat-ment,soft foundation treatment,subgrade reinforcement and other methods.The vertical cumulative settlement of the hard road shoulder and the double amber lines peaks at the pile number K46+1295,and the vertical cumu-lative settlement at the hard road shoulder is greater than that at the double amber lines.When the buried depth is 0-10 m,the horizontal lateral displacement of the left and right roadway changes obviously,and the deforma-tion degree is large;when the buried depth is below 20 m,the influence on the soil is small due to the large buried depth.
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