岩土工程学报2012，Vol.34Issue(11)：2127-2133,7.
膨胀性非饱和土的双尺度毛细–弹塑性变形耦合模型
Constitutive modeling with double-scale pore structure for coupling of capillary hysteresis and stress–strain behaviours in unsaturated expansive soils
摘要
Abstract
A constitutive model with the double-scale pore structure from macroscopic and microscopic views is proposed for predicting the capillary hysteresis and mechanical behaviours of unsaturated expansive soils based on the BExM and the existing hydro-mechanical models for unsaturated non-expansive soils.The proposed model takes into consideration two factors: the interaction between the micro-and macro-structure of expansive soils,and the fully coupled capillary hysteresis with mechanical behaviours.The predictions are performed on the cyclical controlled-suction test results published in public.The comparisons between the measured and predicted results indicate that the proposed model can quantitatively predict the capillary and mechanical behaviours of unsaturated expansive soils.关键词
非饱和膨胀土/弹塑性本构模型/毛细–弹塑性变形耦合模型/双尺度Key words
unsaturated expansive soil/elastoplastic constitutive model/coupling of capillary hysteresis and stress-strain behaviour/double-scale pore structure分类
建筑与水利引用本文复制引用
李舰,赵成刚,黄启迪..膨胀性非饱和土的双尺度毛细–弹塑性变形耦合模型[J].岩土工程学报,2012,34(11):2127-2133,7.基金项目
国家重点基础研究发展计划（973）项目 （）
国家自然科学基金项目 （）
北京市自然科学基金项目 （）
