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Article Dans Une Revue Proceedings of the ICE - Geotechnical Engineering Année : 2015

Behaviour of piled embankments without reinforcement

Résumé

A programme of 20 centrifuge tests was carried out on piled embankments without reinforcement to assess the influence of geometric parameters on surface settlement and on the load transfer mechanism. The three main geometric parameters studied were pile spacing, embankment height and area ratio, which were varied in ranges commonly adopted in practice. The measurements of the forces on the piles allowed assessment of the load transfer mechanisms, and thus the efficiency, which were shown to increase with embankment height and area ratio. Subsoil stress between piles was also assessed and compared with literature data. The centrifuge model test results for stress on the subsoil at the point of 'maximum arching' presented good agreement with the method proposed by Hewlett and Randolph in 1988. Measurements of the surface settlements allowed evaluation of the critical height at which surface differential settlements did not occur. The values of critical height obtained herein are in good agreement with recent literature recommendations.

Domaines

Génie civil
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Dates et versions

hal-01252151 , version 1 (07-01-2016)

Identifiants

Citer

Diego da Fagundes, Romain Girout, Marcio de Souza Soares de Almeida, Matthieu Blanc, Luc Thorel. Behaviour of piled embankments without reinforcement. Proceedings of the ICE - Geotechnical Engineering, 2015, 168 (6), pp.514-525. ⟨10.1680/geng.14.00155⟩. ⟨hal-01252151⟩
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