Stability of an Embankment on Soft Consolidating Soil with Vertical Drains

Krishnamoorthy, Agrahara and Kamal, Smit (2016) Stability of an Embankment on Soft Consolidating Soil with Vertical Drains. Geotechnical and Geological Engineering, 34 (2). pp. 657-669. ISSN 0960-3182

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Abstract

Stability of an embankment constructed on soft consolidating soil improved with pre-fabricated vertical drains is investigated. The factor of safety of the embankment is obtained at various time intervals from the end of construction till the end of consolidation in order to check the embankment stability. Finite element method is used to obtain the effective stresses at required points in soil at various time intervals. Critical slip surface is obtained using two methods. In the first method, the critical slip surface is assumed as an arc of a circle selected among various probable slip circles with minimum factor of safety whereas, in the second method, a random walking type Monte Carlo technique is used to predict the critical slip surface. The effects of providing vertical drains on stability of an embankment is investigated by comparing the factor of safety of slope with vertical drains to the factor of safety of slope without vertical drains. It is concluded from the study that the installation of vertical drains enhances the factor of safety of the embankment from the end of construction till the end of consolidation.

Item Type: Article
Uncontrolled Keywords: Finite element analysis � Factor of safety � Vertical drains � Time dependent analysis � Embankment stability
Subjects: Engineering > MIT Manipal > Civil Engineering
Depositing User: MIT Library
Date Deposited: 15 Jul 2016 15:27
Last Modified: 15 Jul 2016 15:46
URI: http://eprints.manipal.edu/id/eprint/146594

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