Analysis of maximum arching conditions in active plane-strain trapdoors in sand
Loading...
Date
Authors
Osman, Ashraf S.
Jacobsz, Schalk Willem
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
The trapdoor problem is a useful model to understand the stress distribution around geo-structures. This paper focuses on evaluating the conditions of maximum arching (minimum loads on trapdoors) developing during the lowering of plane-strain active trapdoors in cohesionless granular materials. A parametric study using finite element analysis has been performed to investigate various factors affecting the maximum arching conditions in active trapdoors, with a particular focus on the effect of soil dilatancy. The paper also presents rigorous upper bound limit analysis solutions. Previously published solutions dealing with soil non-associativity have been discussed and compared with the finite element results. The finite element analysis shows that using a Mohr Column model with the associative flow rule and reduced strength parameters, overestimates the load reduction on trapdoors compared with a non-associative model with full soil strength parameters.
Description
Keywords
Trapdoor mechanism, Arching, Finite element analysis, Upper bound limit analysis, Soils, Strain, Associative flows, Associative models, Column modeling, Parametric study, Solutions dealing, Strength parameters
Sustainable Development Goals
Citation
Osman, A.S. & Jacobsz, S.W. 2019, 'Analysis of maximum arching conditions in active plane-strain trapdoors in sand', Computers and Geotechnics, vol. 113, art. 103089, pp. 1-11.