Analysis of Influence of Foamed Light Soil on Settlement of Expressway Reconstruction and Expansion Roadbed
In order to discuss the application effect of foamed light soil in subgrade treatment,this paper takes an expressway as an example and analyzes the influence of foamed light soil on subgrade settlement,settlement rate,horizontal displacement and surface deformation through settlement monitoring point.The results show that the subgrade settlement increased rapidly in the first 6 months after the construction,and then gradually stabilized.The sedimentation rate of each monitoring point was high at the beginning,and then gradually slowed down,the aver-age sedimentation rate decreased from 14.7 mm/month at the beginning to 0.27 mm/month 18 months later.The horizontal displacement and subgrade surface deformation increase greatly in the initial stage,and tend to be stable in the later stage.The results show that foamed light soil has good effect on subgrade settlement and deformation control.
Foamed light soilHighway reconstruction and expansionSubgrade settlement
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