TY - JOUR

T1 - Lower-Bound Calculations of the Bearing Capacity of Eccentrically Loaded Footings in Cohesionless Soil

A1 - Krabbenhøft,Sven

A1 - Damkilde,Lars

A1 - Krabbenhøft,Kristian

AU - Krabbenhøft,Sven

AU - Damkilde,Lars

AU - Krabbenhøft,Kristian

PB - N R C Research Press

PY - 2012

Y1 - 2012

N2 - Lower-bound calculations based on the finite element method are used to determine the bearing capacity of a strip foundation subjected to a vertical, eccentric load on cohesionless soil with varying surcharges. The soil is assumed perfectly plastic following the Mohr-Coulomb failure criterion. The results are reported as tables and graphs showing the bearing capacity as a function of the eccentricity and surcharge. Normalised interaction diagrams in the vertical force versus moment plane have been produced. The results from the analysis are in reasonable agreement with existing methods for smaller eccentricities, whereas for greater eccentricities (e > 0.25B-0.3B, where B is the width of the foundation), the lower-bound values in general - and especially for greater surcharges - are considerably smaller than the bearing capacities predicted by existing methods. For the special case of no surcharge, the results are in very good agreement with results obtained by the effective-width approach originally proposed by Meyerhof.

AB - Lower-bound calculations based on the finite element method are used to determine the bearing capacity of a strip foundation subjected to a vertical, eccentric load on cohesionless soil with varying surcharges. The soil is assumed perfectly plastic following the Mohr-Coulomb failure criterion. The results are reported as tables and graphs showing the bearing capacity as a function of the eccentricity and surcharge. Normalised interaction diagrams in the vertical force versus moment plane have been produced. The results from the analysis are in reasonable agreement with existing methods for smaller eccentricities, whereas for greater eccentricities (e > 0.25B-0.3B, where B is the width of the foundation), the lower-bound values in general - and especially for greater surcharges - are considerably smaller than the bearing capacities predicted by existing methods. For the special case of no surcharge, the results are in very good agreement with results obtained by the effective-width approach originally proposed by Meyerhof.

KW - Bearing Capacity

KW - Footings

KW - Cohesionless

KW - Lower Bound

KW - Finite Elements

KW - Eccentricity

KW - Bearing Capacity

KW - Footings

KW - Cohesionless

KW - Lower Bound

KW - Finite Elements

KW - Eccentricity

U2 - 10.1139/T11-103

DO - 10.1139/T11-103

JO - Canadian Geotechnical Journal

JF - Canadian Geotechnical Journal

SN - 0008-3674

IS - 3

VL - 49

SP - 298

EP - 310

ER -