Guidelines for Calibration and Use of the Severn-Trent Sand Model in Modeling Cantilevered Wall-Supported Excavations
| Autor: | G. M. Rotisciani, S. Miliziano |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Engineering
Cantilever elastoplasticity coarse-grained soils business.industry Calibration (statistics) Numerical analysis Constitutive equation Soil Science Structural engineering Plasticity cantilevered retaining walls Nonlinear system Geotechnical engineering numerical analyses elasto-plasticity business Critical state soil mechanics Parametric statistics |
| Zdroj: | International Journal of Geomechanics. 14 |
| ISSN: | 1943-5622 1532-3641 |
| DOI: | 10.1061/(asce)gm.1943-5622.0000373 |
| Popis: | The Severn-Trent sand model is an advanced elastoplastic constitutive model that accurately reproduces the nonlinear mechanical response of coarse-grained soils at small to relatively high strain levels under monotonic loading. The model, formulated within the framework of critical state soil mechanics, includes advanced plasticity modeling concepts such as kinematic hardening, multisurface plasticity, and bounding surface plasticity. This paper shows how the use of Severn-Trent can be extended in modeling cantilevered wall-supported excavations. Following a brief description of the approach taken to introduce the constitutive model into a finite-difference commercial code, guidelines for the model calibration are discussed. Accounting for the approximation, which affects the evaluations of some variables, several plane-strain numerical analyses are performed. The parametric study aims to evaluate to what extent the response of a cantilevered retaining structure in a dry, normally consolidated Toy... |
| Databáze: | OpenAIRE |
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