Numerical Simulation Analysis of Expansive Soil Slope with Flexible Support in Consideration of Hydraulic Properties of Geogrid
The influence of hydraulic properties of geogrid on the stability of expansive soil slope was explored by conducting fluid-solid coupling analysis with Plaxis software.On this basis,the principle of flexible support for expansive soil slope under different rainfall conditions was analyzed.It is found that the axial forces on geogrid in each layer of the reinforced slope increase with the continuous infiltration of rainwater,presenting a"convex"shape variation.Without taking consideration of the hydraulic properties of geogrid,the axial forces on the geogrid will be underestimated and the stability of the slope will be overestimated.Flexible support structure can effectively control rainfall infiltration into slope and maintain the shear strength of expansive soil,meanwhile control the slope deformation and displacement growth.Thus,it is regarded as an effective way to support expansive soil slope.
rainfallexpansive soil slopeslope stabilityhydraulic properties of geogridflexible supportnumerical simulation
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