岩土工程学报2013，Vol.35Issue(6)：1134-1139,6.
基于微观破损规律的结构性土本构模型
Constitutive model for structured soils based on microscopic damage law
摘要
Abstract
Based on the framework of breakage mechanics for geological materials,a constitutive model for structured soils is proposed considering the micro-mechanism of the destructuring effects.The influence of soil structure on the mechanical behaviors is considered by employing a structural yielding surface similar to that for reconstituted soils in geometry.A damage parameter modeling the soil structure damage is used in the hardening law for structured soils.The damage parameter proposed based on the concept of sharing of stress and strain in micro-scale has tangible mechanical denotation and the cooperation of plastic volumetric strain and principal axial strain is considered in the hardening law,thus this model can properly describe the transformation of soils from intact state to reconstituted state.The validity of the proposed model is verified by predicting the mechanical behaviors of natural and artificially cemented clays in the consolidation tests and triaxial compression tests.关键词
微观机理/结构性土/结构损伤/破损规律Key words
micro mechanism/ structured soil/ destructuration/ damage law分类
建筑与水利引用本文复制引用
蒋明镜,刘静德,孙渝刚..基于微观破损规律的结构性土本构模型[J].岩土工程学报,2013,35(6):1134-1139,6.基金项目
国家杰出青年科学基金项目(51025932) （51025932）
教育部博士点基金项目(20100072110048) （20100072110048）
长江学者及创新团队发展计划资助项目(IRT1029) （IRT1029）
