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Izawa, Jun; Ishihama, Yoshiro; Kuwano, J.

doi:10.5030/jcigsjournal.18.243

Geosynthetics Engineering Journal

2003

DOI: 10.5030/jcigsjournal.18.243

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Jun Izawa¹,

Yoshiro Ishihama²,

J. Kuwano³

Abstract: : Deformation property of shear band in sand subjected to plane strain compression and its relation to particle characteristics,

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Seismic sliding stability analysis of reinforced soil retaining walls

Hatami

Jiang

2019

Geosynthetics International

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The Coulomb linear slip plane is adopted in most of the current design guidelines for reinforced soils walls based on the assumption that the reinforced zone acts as a rigid body. However, among major shortcomings of the Coulomb linear slip plane assumption is that its geometry is not consistent with the two-part wedge failure geometry that is typically observed in many model tests and numerical simulations, and the influence of reinforcement design on the sliding stability of reinforced mass cannot be included in the analysis. In this paper, a kinematic limit analysis method is developed for sliding stability calculations of reinforced soil retaining walls subjected to ground acceleration, which is based on the more commonly-observed, two-part wedge failure mechanism. The proposed analysis method is validated against the results of two shaking table model tests. It is subsequently used to investigate the influence of reinforcement and backfill properties, as well as those of vertical acceleration and wall height, on the predicted sliding yield acceleration and failure plane inclination angle in the reinforced zone of the reinforced soil retaining wall systems.

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Seismic sliding stability analysis of reinforced soil retaining walls

Hatami

Jiang

2019

Geosynthetics International

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A centrifuge model study on a slope reinforced by rock bolts with prestressed facing plate

Nakamoto

Seki

Iwasa

et al. 2016

JGS Special Publication

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In this study, a series of centrifuge model tests was carried out to study the mechanical behavior of the slope reinforced by a soil nailing method using rock bolts with prestressed facing plate. For that purpose, a centrifuge model test system was developed, in which the preloading process of rock bolts with facing plate in a model slope can be simulated by hoisting jacks in a centrifuge and pseudo static seismic force can be also imposed on the slope by an inclining table. The tests were performed with various preloading forces. Lateral displacements and settlements of the facing plates, lateral displacements of the slope surface and facing stresses were measured during both the preloading process and the inclining tests. It was found that the reinforcement of slopes by the rock bolts with facing plate could effectively prevent deformation and failure. The larger the prestress was, the better the reinforcement effect. However, the effect of prestress increment on the slope stability became smaller as the prestress increased, especially after large deformations occurred. The deformation of the slope was deeper and wider for the reinforcement with smaller prestress, and shallower in limited local areas for the reinforcement with larger prestress.

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Izawa¹,

Kuwano²

2007

Jioshinsetikkusu Rombunshu (Geosynthetics Engineering Journal)

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Untitled

Abstract: : Deformation property of shear band in sand subjected to plane strain compression and its relation to particle characteristics,

Cited by 3 publications

References 2 publications

Seismic sliding stability analysis of reinforced soil retaining walls

Seismic sliding stability analysis of reinforced soil retaining walls

A centrifuge model study on a slope reinforced by rock bolts with prestressed facing plate

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