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Modeling the dynamic response of wrap-faced reinforced soil retaining walls

Krishna, Murali A and Latha, Madhavi G (2012) Modeling the dynamic response of wrap-faced reinforced soil retaining walls. In: International Journal of Geomechanics, 12 (4). pp. 439-450.

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Official URL: http://dx.doi.org/10.1061/(ASCE)GM.1943-5622.00001...

Abstract

This paper describes the development of a numerical model for simulating the shaking table tests on wrap-faced reinforced soil retaining walls. Some of the physical model tests carried out on reinforced soil retaining walls subjected to dynamic excitation through uniaxial shaking tests are briefly discussed. Models of retaining walls are constructed in a perspex box with geotextile reinforcement using the wraparound technique with dry sand backfill and instrumented with displacement sensors, accelerometers, and soil pressure sensors. Results showed that the displacements decrease with the increase in number of reinforcement layers, whereas acceleration amplifications were not affected significantly. Numerical modeling of these shaking table tests is carried out using the Fast Lagrangian Analysis of Continua program. The numerical model is validated by comparing the results with experiments on physical models. Responses of wrap-faced walls with varying numbers of reinforcement layers are compared. Sensitivity analysis performed on the numerical models showed that the friction and dilation angle of backfill material and stiffness properties of the geotextile-soil interface are the most affecting parameters for the model response.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American Society of Civil Engineers.
Keywords: Geosynthetics; Retaining Walls; Shake Table Tests; Seismic Analysis; Numerical Models
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Depositing User: Francis Jayakanth
Date Deposited: 18 Jun 2013 11:37
Last Modified: 18 Jun 2013 11:37
URI: http://eprints.iisc.ac.in/id/eprint/46738

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