Abstract
Abstract Finite element analyses were performed to find out the load bearing behavior of three kinds of shallowfoundations. The analysis results for strip footing showed that local shear failure mode could be observed for a zerodilatancy angle and general shear failure mode could be seen for non-zero dilatancy angles. The ultimate bearing loadsfor non-zero dilatancy angles were approximately 1.5 times higher than that of a zero dilatancy angle. General shearfailure mode was observed for circular footing and square footing regardless of the dilatancy angle. The ultimate bearing loads for a non-zero dilatancy angle were slightly greater than that for a zero dilatancy angle. A comparison of the load-settlement curves for three kinds of footing showed that the load bearing capacities for non-zero dilatancyangle were greater than those for a zero-dilatancy angle. Key Words : Finite element analysis, Load bearing behavior, Failure mode, Dilatancy angle, Ultimate bearing load * Corresponding Author : Su-Hyung Lee(Korea Railroad Research Institute)Tel: +82-31-460-5399 email: geoxlee@krri.re.krReceived July 10, 2014 Revised (1st August 25, 2014, 2nd September 25, 2014) Accepted October 10, 2014
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