## Abstract

The pioneering work by De Beer gave evidence that the bearing capacity factor N? of shallow foundations on sand decreases with increasing foundation width. This size effect is mainly attributed to the fact that the shear strength in the sand decreases with increasing isotropic stress level. A non linear finite element program which incorporates an advanced kinematic hardening-softening model is used to study this size effect for strip and circular footings. The constitutive model is calibrated for a given sand. Results of the finite element program are compared with experimental results obtained from literature on shallow foundations. The size effect on the shape factor s(?) and the allowable bearing pressure is also investigated. A criterion which governs the safety of a foundation on Nevada sand in the range of widths from 1m to 6m is presented with a shape factor for the allowable bearing pressure.

Original language | English |
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Title of host publication | Numerical models in geomechanics. Proceedings of the 7th international symposium, Graz, September 1999. |

Editors | G. N. Pande, S. Pietruszczak, H. F. Schweiger |

Pages | 463-468 |

Number of pages | 6 |

Publication status | Published - 1999 |

Event | 2nd European Conference on Neutron Scattering - Budapest, Hung Duration: 1 Sep 1999 → 4 Sep 1999 |

### Conference

Conference | 2nd European Conference on Neutron Scattering |
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Abbreviated title | ECNS '99 |

City | Budapest, Hung |

Period | 1/09/99 → 4/09/99 |