THE RESIDUAL LATERAL EARTH PRESSURE ON RETAINING WALL DUE TO VIBRATORY ROLLERS

Abstract

Compaction of backfill behind a retaining wall is normally affected by the compactors. Thecompaction plant can be represented approximately by a surcharge load equal to the weight ofthe roller. If a vibratory roller is employed, the centrifugal force due to the vibratingmechanism should be added to the static weight. After compaction, the lateral stress does notrevert to the basic value (kaγz). At a certain depth, the residual lateral pressure may be highenough to cause passive failure in the soil behind the retaining wall. The present paperanalyses the effect of compaction of the backfill behind the retaining walls. The values of theresidual lateral earth pressure induced by common compacting equipment the most parts ofthe world especially in Egypt are calculated by the classical methods (the method of Canadiancode of Practice). The study compares the method of Canadian Practice results and the resultsof the analysis using the finite element to enhance the method of calculation the lateral earthpressure due to compaction.