Simplifying calibration of bonded elasto-plastic models

Using realistic constitutive models for artificially cemented soils is advantageous in design. However, the price of that increased realism is often a more elaborate model, which is difficult to calibrate. A database of high quality triaxial tests on compacted cemented silty sand is used to calibrat...

Full description

Saved in:
Bibliographic Details
Published in:Computers and geotechnics 2016-03, Vol.73, p.100-108
Main Authors: Rios, Sara, Ciantia, Matteo, Gonzalez, Nubia, Arroyo, Marcos, da Fonseca, António Viana
Format: Article
Language:English
Subjects:
Bonding
Calibration
CASM model
Cemented sand
Cementing
Constitutive model
Enginyeria civil
Geotècnia
High pressure triaxial tests
Mathematical models
Mecànica de sòls
Mecànica dels sòls
Porosity–cement ratio
Sand
Sandy soils
Soils
Staged
Àrees temàtiques de la UPC
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Using realistic constitutive models for artificially cemented soils is advantageous in design. However, the price of that increased realism is often a more elaborate model, which is difficult to calibrate. A database of high quality triaxial tests on compacted cemented silty sand is used to calibrate and validate a generalized critical state bonded soil model. The exercise highlights the staged calibration procedure that is convenient in this kind of application. The calibration results have shown a direct relation between added yield strength and a well-established soil–cement mixture ratio, which facilitates the application of the model in design. It is shown that such relation can be also deduced from the analysis of unconfined compressive strength tests.
ISSN:0266-352X
1873-7633
DOI:10.1016/j.compgeo.2015.11.019