Seismic reliability assessment of internal stability of reinforced soil walls using the pseudo-dynamic method

Basha, BM and Babu, GLS (2011) Seismic reliability assessment of internal stability of reinforced soil walls using the pseudo-dynamic method. In: Geosynthetics International, 18 (5). pp. 221-241.

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Abstract

The study focuses on probabilistic assessment of the internal seismic stability of reinforced soil structures (RSS) subjected to earthquake loading in the framework of the pseudo-dynamic method. In the literature, the pseudo-static approach has been used to compute reliability indices against the tension and pullout failure modes, and the real dynamic nature of earthquake accelerations cannot be considered. The work presented in this paper makes use of the horizontal and vertical sinusoidal accelerations, amplification of vibrations, shear wave and primary wave velocities and time period. This approach is applied to quantify the influence of the backfill properties, geosynthetic reinforcement and characteristics of earthquake ground motions on reliability indices in relation to the tension and pullout failure modes. Seismic reliability indices at different levels of geosynthetic layers are determined for different magnitudes of seismic acceleration, soil amplification, shear wave and primary wave velocities. The results are compared with the pseudo-static method, and the significance of the present methodology for designing reinforced soil structures is discussed.

Item Type:	Journal Article
Publication:	Geosynthetics International
Publisher:	Thomas Telford
Additional Information:	Copyright of this article belongs to Thomas Telford.
Keywords:	Geosynthetics;Internal stability;Pseudo-dynamic method; Reliability;Tension failure;Pullout failure
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	24 Feb 2012 12:02
Last Modified:	24 Feb 2012 12:02
URI:	http://eprints.iisc.ac.in/id/eprint/43691

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