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BEARING CAPACITY OF FOUNDATIONS ON (承载力的基础上).pdf

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Journal of Marine Science and Technology, Vol. 14, No. 1, pp. 1-14 (2006) 1 BEARING CAPACITY OF FOUNDATIONS ON SAND USING THE METHOD OF SLIP LINE Meen-Wah Gui* and Balasingam Muhunthan** Key words: bearing capacity, slip line, sand, foundation design, critical frictional and dilatancy components. The dilatancy depth. component is a nonlinear function of the state of stress in sand and its relative density. Therefore, a realistic approach for the determination of bearing capacity must ABSTRACT take into account of the nonlinear shear strength of the sand. The accurate prediction of the bearing capacity of shallow foun- Graham and Pollock [12] have used the method of dations on granular soils has been complicated by their stress depen- dent strength behavior and the surface roughness of the foundation- slip line and the simple strength behavior proposed by soil interface. These are accounted for using empirical relations in the De Beer [2] in which φ varied with log mean principal current state of practice. In this study, the stress dependent behavior stress to develop bearing capacity solution for a footing of soils is accounted for using a strength dilatancy relationship. The founded on the surface. The magnitude of the var
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