Volume 9, Number 4 (December 2011)                   IJCE 2011, 9(4): 293-306 | Back to browse issues page


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Jahanandish M, Veiskarami M, Ghahramani A. Investigation of foundations behavior by implementation of a developed constitutive soil model in the ZEL method. IJCE. 2011; 9 (4) :293-306
URL: http://ijce.iust.ac.ir/article-1-446-en.html

Abstract:   (4298 Views)

Foundations behavior is affected by soil behavior which can vary from dilative to contractive depending on the stress level,

particularly in dense frictional soils. The Zero Extension Lines (ZEL) method has been generally developed to predict the

foundations behavior. Knowledge of soil behavior enables the ZEL method to predict the general and local shear failure modes.

In this paper, a relatively simple work hardening/softening soil constitutive model is developed to represent dense frictional soils

behavior under different stress levels. This model is based on the accumulation of the plastic work during a simple direct shear

test and its relationship to stress ratio to establish the hardening law. Verifications have been made for the developed soil model.

The model is then implemented into the ZEL method to theoretically investigate the bearing capacity and load-displacement

behavior of foundations over dense frictional soils. Utilization of this model enables the ZEL method to capture different modes

of failure depending on the foundation size. A numerical study on foundations behavior was performed showing the ability of the

presented approach in capturing both failure modes.

Full-Text [PDF 2061 kb]   (2285 Downloads)    
Type of Study: Research Paper | Subject: Soil Mechanics Classic

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