Journal
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
Volume 23, Issue 12, Pages 1444-1466Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/19648189.2017.1353442
Keywords
Sand; constitutive model; critical state; triaxial test; finite element; foundation
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Funding
- National Natural Science Foundation of China [41372285, 51579179]
- Region Pays de la Loire of France [project RI-ADAPTCLIM]
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Numerous advanced constitutive models for granular materials have been proposed involving many parameters. As a result, the determination of parameters becomes an important issue from models to engineering practice. This paper aims to propose a straightforward method for parameters determination from standard laboratory tests. First, a recently developed simple critical state-based sand model is adopted with non-linear critical state line and some key parameters. Based on this model, the derivation of all constitutive equations is made to propose a straightforward procedure for determining parameters. The conventional drained triaxial tests performed on Toyoura sand are selected as example for clarifying and validating the procedure. Furthermore, the model is implemented into a finite element code, and numerical modelling of a series footing and pile penetration tests is performed using the straightforwardly determined parameters. Overall, the proposed procedure is validated as an efficient and reliable bridge from critical state-based constitutive modelling to finite element analysis.
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