Behaviour of geocell-reinforced sand beds under strip loading

Authors: Dash, Sujit K.; Rajagopal, K; Krishnaswamy, N R.

Source: Canadian Geotechnical Journal, Volume 44, Number 7, July 2007 , pp. 905-916(12)

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Abstract:

A series of laboratory model tests have been performed to study the behaviour of geocell-reinforced sand beds under strip loading. The strain in geocell walls, pressure transmitted to the subgrade soil, and deformations in the subgrade were measured during the tests to develop an understanding of the mechanism of geocell reinforcement. The pattern of strain variation in the geocell walls indicates that the geocell mattress behaves as a composite beam supported by the subgrade soil. The load dispersion in the geocell mattress is found to be governed by factors such as geometry of the geocell layer and its placement position under the footing.Key words: soil reinforcement, geocell, sand, behaviour, strip loading.

On a réalisé une série d'essais sur modèle en laboratoire pour étudier le comportement de lits de sable armés de géocellules sous un chargement sur semelle filante. La déformation dans les murs de géocellules, la pression transmise au sol de l'infrastructure et la déformation dans l'infrastructure ont été mesurées durant les essais pour développer une compréhension du mécanisme de l'armature de géocellules. Le schéma de la variation de la déformation dans les murs de géocellules indique que le matelas de géocellules se comporte comme une poutre composite supportée par le sol de l'infrastructure. On trouve que la dispersion de la charge dans le matelas de géocellules est régie par des facteurs tels que la géométrie de la couche de géocellules et l'endroit où elle est placée sous la semelle.Mots-clés : armature de sol, géocellules, sable, comportement, chargement linéaire.[Traduit par la Rédaction]

Document Type: Research article

Publication date: 2007-07-01

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Published since 1963, this monthly journal features articles, notes, and discussions related to new developments in geotechnical and geoenvironmental engineering, and applied sciences. The topics of papers written by researchers, theoreticians, and engineers/scientists active in industry include soil and rock mechanics, material properties and fundamental behaviour, site characterization, foundations, excavations, tunnels, dams and embankments, slopes, landslides, geological and rock engineering, ground improvement, hydrogeology and contaminant hydrogeology, geochemistry, waste management, geosynthetics, offshore engineering, ice, frozen ground and northern engineering, risk and reliability applications, and physical and numerical modelling. Papers on actual case records from practice are encouraged and frequently featured.
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Behaviour of geocell-reinforced sand beds under strip loading

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