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Reliability Based Design Optimization for Internal Stability of Reinforced Soil Structures Using Pseudo‐Static Method

Basha, Munwar B and Babu, Sivakumar GL (2009) Reliability Based Design Optimization for Internal Stability of Reinforced Soil Structures Using Pseudo‐Static Method. In: Contemporary Topics in In Situ Testing, Analysis, and Reliability of Foundations (GSP 186), 2009, Reston, VA.

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Official URL: http://ascelibrary.org/proceedings/resource/2/asce...

Abstract

Seismic design of reinforced soil structures involves many uncertainties that arise from the backfill soil properties and tensile strength of the reinforcement which is not addressed in current design guidelines. This paper highlights the significance of variability in the internal stability assessment of reinforced soil structures. Reliability analysis is applied to estimate probability of failure and pseudo‐static approach has been used for the calculation of the tensile strength and length of the reinforcement needed to maintain the internal stability against tension and pullout failures. Logarithmic spiral failure surface has been considered in conjunction with the limit equilibrium method. Two modes of failure namely, tension failure and pullout failure have been considered. The influence of variations of the backfill soil friction angle, the tensile strength of reinforcement, horizontal seismic acceleration on the reliability index against tension failure and pullout failure of reinforced earth structure have been discussed.

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to American Society of Civil Engineers.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 20 Dec 2011 05:15
Last Modified: 20 Dec 2011 05:15
URI: http://eprints.iisc.ernet.in/id/eprint/39681

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