For a road widening project along lakeside

a control section of its soil strata was numerically simulated to study the global stability of the widened embankment with the strength reduction method.The analysis indicates that the stability of the widened road embankment does not satisfy the safety requirement so that special engineering measures are needed to improve the soils.Two different measures were numerically simulated according to the preliminary design scheme.The first one is to use geo-grids

and the second to use cement mixed piles plus geo-grids.The numerical study indicates that the second measure can reduce the differential settlement and improve the stability against sliding more effectively than the first one.The work in this paper can provide reference and illustration to similar projects.