A hydro-mechanical elastoplastic model for unsaturated soils under isotropic loading conditions

被引：22
作者：
Ghasemzadeh, H. [1 ]
Amiri, S. A. Ghoreishian [1 ]
机构：
[1] KN Toosi Univ Technol, Fac Civil Engn, Tehran, Iran
来源：
COMPUTERS AND GEOTECHNICS | 2013年 / 51卷
关键词：
Elastoplastic behavior; Unsaturated soil; Hydro-mechanical coupling; Collapsible soil; Expansive soil; GENERALIZED EFFECTIVE STRESS; UNCONVENTIONAL PLASTICITY; CONSTITUTIVE-EQUATIONS; MECHANICAL-BEHAVIOR; CYCLIC PLASTICITY; STRAIN BEHAVIOR; HYSTERESIS; FRAMEWORK; REQUIREMENTS; DEFORMATION;
D O I：
10.1016/j.compgeo.2013.02.006
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
This paper presents an elastoplastic constitutive model for the coupling of hydraulic and stress-strain behavior of unsaturated soils under isotropic loading conditions. The proposed model is capable of considering the influence of irrecoverable changes in water volume fraction on stress-strain behavior and plastic strain on hydraulic behavior. Bounding surface and subloading surface plasticity frameworks are employed to describe hydraulic and mechanical behavior, respectively. The appropriate coupled hardening rules are introduced to fully describe the coupling effects between hydraulic and stress-strain behavior. Model predictions for unsaturated highly expansive and collapsible soils are compared with test data, and reasonable agreement is achieved. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：91 / 100
页数：10
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