Spatial Distribution of Subgrade Moisture Content under Rainfall Infiltration Conditions
In order to explore the spatial distribution of subgrade water content under rainfall infiltration conditions,TDR moisture sen-sors were embed in different depth sections of the subgrade to continuously observe the change of water content,and numerical simula-tion analysis was conducted through finite element analysis software to compare the difference between the measured value and the sim-ulation value.The results show that the influence of rainfall infiltration on subgrade water content is lagging,and the top surface of sub-grade is affected firstly.The water content of subgrade is relatively constantbefore rainfall,and he moisture content of different depth sections of subgrade first increases rapidly,then tends to be stable,and finally decreases slowly after the rainfall.The fluctuation of wa-ter content of the excavated subgrade is significantly greater than that of the filled subgrade even at the same depth section.Finite ele-ment analysis software can better predict the spatial distribution of subgrade moisture content since the change law of water content shown in numerical simulation is similar to the measured results for the two types of subgrade.
万方数据
维普
