Discontinuity layout optimization

Application of limit analysis in unsaturated soils: Numerical and experimental study of bearing capacity

Published in N. Khalili, A.R. Russell, A. Khoshghalb, Unsaturated Soils: Research & Applications, 2020

The aim of this paper is to report current work investigating the application of the computational limit state analysis method to unsaturated geotechnical problems. Specifically the plane strain upper bound approach, Discontinuity Layout Optimization (DLO) described by Smith & Gilbert (2007a) is extended to model the effects of partial saturation and is compared against laboratory scale models tests of bearing capacity on a fine sand.

The study on yield acceleration and permanent displacement of broken-back gravity quay walls – a case study

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Journal Information

Published in Marine Georesources & Geotechnology, 2022

Hamid Alielahi, Zia addin Nadernia

Despite the recent dissemination of the FELA method that directly analyses the failure state of structural systems, it is still necessary to find extensive applications in engineering fields. Engineers do not enforce new analytical methods with limited applications instead of well-established iterative methods such as nonlinear FE analysis. While the FELA is developed through continuous mechanical problems, a more straightforward discontinuous solution can be considered as an alternative (Alwis, 2000). Smith and Gilbert have recently proposed a novel computational limit analysis method to overcome existing limitations (Smith and Gilbert 2007a, 2007b). With this new method, called “Discontinuity Layout Optimization” (DLO), the problem is formulated in terms of discontinuity lines instead of the solid elements. It directly produces the upper bound mechanisms (Gilbert et al. 2010).

Discontinuity layout optimization

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Application of limit analysis in unsaturated soils: Numerical and experimental study of bearing capacity

The study on yield acceleration and permanent displacement of broken-back gravity quay walls – a case study