Model Prediction of Anisotropic Behavior of Boston Blue Clay
Publication: Journal of Geotechnical Engineering
Volume 120, Issue 1
Abstract
This paper investigates predictive capabilities of the effective stress soil model MIT‐E3 (described in a companion paper) through detailed comparisons with laboratory test data for Boston blue clay (BBC). The main focus of these evaluations is predictions of anisotropic stress‐strain behavior using data from two special laboratory shear devices: the directional shear cell (DSC), and the multi‐directional direct simple shear apparatus (MDSS). Input parameters are first estimated from standard types of laboratory data, including one‐dimensional () compression and undrained triaxial shear tests. The DSC is a plane strain apparatus with the additional capability of controlling principal stress directions during shear. Measurements in this device include undrained shear tests with principal stress rotations at , and with fixed stress direction but different principal stress orientation at . The MIT‐E3 model describes accurately the observed variations in undrained shear strength and stress‐strain behavior in tests at , but is notably less reliable at . The MDSS has the same dimensions and boundary conditions as the Geonor simple shear apparatus, but can apply horizontal shear stresses in two independent directions. Measurements in the MDSS apparatus demonstrate the anisotropic properties of BBC at induced by consolidation under an applied shear stress. MIT‐E3 predictions are in excellent agreement with measured variations in peak shear resistance and prepeak stress‐strain response.
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Information & Authors
Information
Published In
Journal of Geotechnical Engineering
Volume 120 • Issue 1 • January 1994
Pages: 199 - 224
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Jun 22, 1992
Published online: Jan 1, 1994
Published in print: Jan 1994
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