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Numerical Analysis of Load Bearing Behavior of Shallow Foundations

얕은기초의 하중지지거동에 관한 수치해석

  • Lee, Seung-Hyun (Department of Civil Engineering, Sunmoon University) ;
  • Lee, Su-Hyung (Korea Railroad Research Institute, Metropolitan Transportation Research Center)
  • 이승현 (선문대학교 토목공학과) ;
  • 이수형 (한국철도기술연구원 광역도시교통연구본부)
  • Received : 2014.07.10
  • Accepted : 2014.10.10
  • Published : 2014.10.31

Abstract

Finite element analyses were performed to find out the load bearing behavior of three kinds of shallow foundations. The analysis results for strip footing showed that local shear failure mode could be observed for a zero dilatancy angle and general shear failure mode could be seen for non-zero dilatancy angles. The ultimate bearing loads for non-zero dilatancy angles were approximately 1.5 times higher than that of a zero dilatancy angle. General shear failure 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 dilatancy angle were greater than those for a zero-dilatancy angle.

Keywords

Finite element analysis;Load bearing behavior;Failure mode;Dilatancy angle;Ultimate bearing load

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