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Liquefaction And Pore Water Pressure Generation In Sand - A Cyclic Strain Approach

Sitharam, TG and Ravishankar, BV and Vinod, JS (2008) Liquefaction And Pore Water Pressure Generation In Sand - A Cyclic Strain Approach. In: Journal Of Earthquake And Tsunami, 2 (3). pp. 227-240.

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Official URL: http://www.worldscinet.com/jet/02/0203/S1793431108...

Abstract

This paper presents the results of laboratory investigation carried out on Ahmedabad sand on the liquefaction and pore water pressure generation during strain controled cyclic loading. Laboratory experiments were carried out on representative natural sand samples (base sand) collected from earthquake-affected area of Ahmedabad City of Gujarat State in India. A series of strain controled cyclic triaxial tests were carried out on isotropically compressed samples to study the influence of different parameters such as shear strain amplitude, initial effective confining pressure, relative density and percentage of non-plastic fines on the behavior of liquefaction and pore water pressure generation. It has been observed from the laboratory investigation that the potential for liquefaction of the sandy soils depends on the shear strain amplitude, initial relative density, initial effective confining pressure and non-plastic fines. In addition, an empirical relationship between pore pressure ratio and cycle ratio independent of the number of cycles of loading, relative density, confining pressure, amplitude of shear strain and non-plastic fines has been proposed.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to World Scientific Publishing.
Keywords: Liquefaction;pore water pressure build up;cyclic triaxial test;sands
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 04 Sep 2009 03:42
Last Modified: 04 Sep 2009 03:42
URI: http://eprints.iisc.ernet.in/id/eprint/19483

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