A new constitutive model of unsaturated soils using bounding surface plasticity (BSP) and a non-associative flow rule

被引：12

作者：

Lai B.T. ^{[1
]}

Wong H. ^{[1
]}

Fabbri A. ^{[1
]}

Branque D. ^{[1
]}

机构：

[1] Université de Lyon, LTDS-LGCB, UMR 5513 CNRS, ENTPE, Université de Lyon, 3 rue Maurice Audin, Vaulx en Velin

来源：

Innovative Infrastructure Solutions | 2016年 / 1卷 / 1期

关键词：

Bounding surface plasticity; Critical state; Non-associative law; Unsaturated soils;

D O I：

10.1007/s41062-016-0005-z

中图分类号：

学科分类号：

摘要：

This paper presents a constitutive model for unsaturated soils, based on the non-associate bounding surface plasticity concept under a critical state framework. With a limited number of parameters, this model allows removing the sudden stiffness reduction at the on-set of plastic strains when the stress reaches the yield surface. It also enables to reproduce smooth transitions from pre-peak hardening to post-peak softening and from contractant to dilatant behavior, which are common short comings of more classic models. The performance of this model is highlighted by a comparison between its numerical results, those from other unsaturated elastic–plastic models and experimental data. © 2016, Springer International Publishing Switzerland.

引用

共 22 条

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