A constitutive model for unsaturated soil–structure interfaces. (20th June 2015)

• Record Type: Journal Article
• Authors: Lashkari, Ali; Kadivar, Mehdi
• Is Part Of: International journal for numerical and analytical methods in geomechanics. Volume 40:Number 2(2016)
• Page Start: 207
• Page End: 234
• Publication Date: 2015-06-20
• Subjects: interface -- constitutive model -- unsaturated soil -- skeleton stress -- dilation; Soil mechanics -- Mathematics -- Periodicals; Rock mechanics -- Mathematics -- Periodicals; 624.1510151
• DOI: 10.1002/nag.2392
• Languages: English
• ISSNs: 0363-9061

Abstract

Summary: A constitutive model for simulation of the behavior of unsaturated interfaces is presented here. The model is an extension of an existing critical state compatible interface model for dry and saturated interfaces that was already proposed by one of the authors [Lashkari, A. 2013. Int. J. Numer. Anal. Meth. Geomech.37 (8): 904–931]. For a proper simulation of the behavior of partially saturated interfaces, the extended model is formulated in terms of two pairs of work conjugate stress–strain‐like variables. The modified model simulations are compared with the existing data of dry, unsaturated, and saturated interfaces. For each interface type, it is shown that the proposed model can capture the essential elements of the behavior using a unique set of parameters. Copyright © 2015 John Wiley & Sons, Ltd.