Yield design solutions to bearing capacity of a column-reinforced soil foundation under inclined loading

Burró, María Alicia Arévalos; Maghous, Samir

doi:10.20906/cps/cilamce2015-0467

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“…It is noted that the ultimate bearing capacity depends on the constituents' specific weight through dimensionless parameters k = γ r / γ s and ξ = γ s B / C s . A parametric study investigating the influence of the latter parameter on the ultimate bearing capacity has actually shown that ξ slightly affects the derived kinematic approach upper bound estimates of F + ( δ ).…”

Section: Numerical Resultsmentioning

confidence: 99%

A plane strain yield design approach to stability analysis of a column‐reinforced soil foundation under inclined loading

Arévalos

Maghous

2016

Num Anal Meth Geomechanics

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The ultimate bearing capacity problem of column-reinforced foundations under inclined loading is investigated within the framework of static and kinematic approaches of yield design theory. The configuration of a native soft clayey soil reinforced by either a group of purely cohesive columns (lime-column technique) or a group of purely frictional columns (stone-column technique) is analyzed under plane strain conditions. First, lower bound estimates are derived for the ultimate bearing capacity by considering statically admissible piecewise linear stress distributions that comply with the local strength conditions of the constitutive materials. The problem is then handled by means of the yield design kinematic approach of limit analysis through the implementation of several failure mechanisms, allowing the formulation of upper bound estimates for the ultimate bearing capacity. A series of finite element limit load solutions obtained from numerical elastoplastic simulations suggests that the predictions derived from the kinematic approach appear to be more accurate than the estimates obtained from the static approach. Comparison with available results obtained in the context of yield design homogenization demonstrates the accuracy of the proposed direct analysis, which may therefore be viewed as complementary approach to homogenization-based approaches when a small number of columns is involved. Figure 13. Effect of cohesion ratio m = C r /C s on the lower and upper bound estimates of the ultimate bearing capacity for 'Lime-cement columns ' configuration. [Colour figure can be viewed at wileyonlinelibrary.com]

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Section: Numerical Resultsmentioning

confidence: 99%

A plane strain yield design approach to stability analysis of a column‐reinforced soil foundation under inclined loading

Arévalos

Maghous

2016

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

show abstract

Yield design solutions to bearing capacity of a column-reinforced soil foundation under inclined loading

Abstract: Abstract. Most design procedures devised to evaluating the bearing capacity of columnreinforced foundations have mainly dealt with foundations under vertical

Cited by 1 publication

References 2 publications

A plane strain yield design approach to stability analysis of a column‐reinforced soil foundation under inclined loading

A plane strain yield design approach to stability analysis of a column‐reinforced soil foundation under inclined loading

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