Header menu link for other important links
X
Finite Element Evaluation of Vertical Bearing Capacity Factors Nc′ , Nq′ and Nγ′ for Ring Footings
Published in Springer International Publishing
2019
Volume: 37
   
Issue: 2
Pages: 741 - 754
Abstract
In this study, the vertical bearing capacity factors Nc′, Nq′ and Nγ′ are evaluated for smooth and rough base ring footings resting on c–ϕ soil using the finite element method. The radii ratio, (r i /r o ), is the ratio of internal radius to the external radius of the ring footing, is varied from 0 to 0.75 with an increment of 0.25. The friction angle of the soil is varied from 5° to 35°, dilation angle is zero and the Mohr–Coulomb yield criterion and non-associative flow rule are used. The study is extended for the soil having a friction angle of 35° considering the non-associative flow rule with a dilation angle of 5°. The bearing capacity factors are evaluated considering cohesion, surcharge and unit weight as three separate components. Then the superposition of the three components of the bearing capacity equation is analysed. A numerical example is considered to illustrate the applicability of the finite element analysis by comparing the bearing capacities with those of the Terzaghi’s classical equation. The finite element results are presented in the form of design charts and tables for practical use. © 2018, Springer Nature Switzerland AG.
About the journal
JournalData powered by TypesetGeotechnical and Geological Engineering
PublisherData powered by TypesetSpringer International Publishing
ISSN09603182
Open AccessNo
Concepts (18)
  •  related image
    Bearing capacity
  •  related image
    Friction
  •  related image
    Numerical methods
  •  related image
    Soils
  •  related image
    Bearing capacity factor
  •  related image
    CLASSICAL EQUATION
  •  related image
    COULOMB YIELD CRITERIA
  •  related image
    DILATION ANGLES
  •  related image
    FINITE ELEMENT EVALUATIONS
  •  related image
    NON-ASSOCIATIVE FLOWS
  •  related image
    Three component
  •  related image
    VERTICAL BEARING CAPACITY
  •  related image
    Finite element method
  •  related image
    COULOMB CRITERION
  •  related image
    Dilation
  •  related image
    Footing
  •  related image
    MOHR THEORY
  •  related image
    Soil-structure interaction