SEISMIC BEARING CAPACITY OF SHALLOW FOUNDATION WITH BASE INCLINATION

The determination of seismic bearing capacity for strip footings with base inclination is the aim of this paper. For this purpose, a limit equilibrium based method is used. The seismic force is considered as pseudostatic forces acting on both footing and soil and determined. To obtain the ultimate bearing capacity, an imaginary retaining wall is assumed to pass the footing wedge and the lateral earth pressure exerted on the wall in active and passive conditions are determined. The bearing capacity factors are computed for various values of soil friction angle, seismic acceleration coefficients in horizontal and vertical directions, foundation inclination. The effects of various parameters on the seismic bearing capacity factors have been studied. The results obtained from the present method are compared with other available methods, confirming the reliability of the developed method.

Keywords:

Limit Equilibrium , Seismic Bearing Capacity , Strip Footings , Lateral Earth Pressure