Volume 36, Issue 2 (3-2018)                   JCME 2018, 36(2): 49-62 | Back to browse issues page

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Salari M, Akhtarpour A. An Improvement of Vermeer-de Borst Constitutive Model for Numerical Simulation of the Shear Behavior of Rockfills . JCME. 2018; 36 (2) :49-62
URL: http://jcme.iut.ac.ir/article-1-715-en.html
1- Department of Civil Engineering, Ferdowsi University of Mashhad, Mashhad, Iran , Akhtarpour@um.ac.ir
2- Department of Civil Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
Abstract:   (3078 Views)
The most important features and phenomena of the deformation behavior of rockfills are stress-dependent stiffness, hardening and dilative (or contractive) behaviors, as well as breakage, rotation and redistribution of particle size. An elasto-plastic constitutive model has been suggested by Vermeer and de Borst to simulate the shear behavior of soils, concretes and rocks. This research has tried to improve this model for numerical simulation of the shear behavior of rock fills. The improvement of the model has been performed through proposing new mobilized dilation and friction angles functions and new relationships for some parameters. For validation, a series of large-scale triaxial tests performed on the rockfill shell of Masjed-e-Soleyman dam have been simulated with the improved model. The results show that the improved Vermeer-De Borst model has a good accuracy to simulate the shear behavior of rockfills numerically.
Full-Text [PDF 590 kb]   (954 Downloads)    
Type of Study: Research | Subject: Special
Received: 2018/02/26 | Accepted: 2018/02/26 | Published: 2018/02/26

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