Active Earth Pressure with Wall Rotation Movement about Base Considering Soil Arching

Based on coulomb's theory and the study on the shape of the principal stress arching in limiting state soil behind the rigid retaining wall with the rotation about base,the horizontally earth pressure factor and the horizontal friction coefficients were calculated for different friction angle of soil and friction angle between wall-surface and soil to study the vertical stress and shear stress.And the theoretical formulas were obtained for the active earth pressures,the resultant earth pressures and the points of application of resultant earth pressures.The effects of the internal frictional angle of backfill and the frictional angle between the wall back and the backfill on several parameters were investigated,which included the lateral coefficient of earth pressure,the horizontal friction coefficients,the unit earth pressure,the resultant force of earth pressure,the application point of the resultant force and the overturning stability of a retaining wall.And the formula proposed was compared with some experimental observations.And it is found that the results are in good agreement.