工程地质学报Issue(6)：973-980,8.
基于综合结构势概念的海口原状红黏土K-G模型修正
MODIFICATION OF K-G MODEL BASED ON COMPREHENSIVE STRUC-TURE POTENTIAL FOR NATURAL RED SOIL IN HAIKOU
摘要
Abstract
Soil structure is the main reason causing the differences between natural and remolded soils.The soil structure have impacts on methods and means of geotechnical engineering.This paper establishes a structural consti-tutive model of Haikou red clay.Based on structural quantitative indicators,the concept of comprehensive structure potential is introduced.It builds quantitative expression among geotechnical microstructure,cementation and macro-scopic mechanical effects.The stress typical structural parameter and strain typical structural parameter are defined. They are obtained through the isotropic consolidation test and p=constant shearing test respectively.Both parameters exist the normalized linearization relationship relative to average principal stress.The result can describe the Haikou undisturbed red clay structure.These parameters are used to modify the K-G model.A numerical simulation is car-ried out.Results showed that the modified K-G model can describe the structure of Haikou undisturbed red clay, and well predict the stress-strain relationship of undisturbed red soil.关键词
结构性/综合结构势/K-G模型Key words
Soil structure/Comprehensive structure potential/K-G model分类
天文与地球科学引用本文复制引用
吴小锋,李光范,胡伟,杜娟,徐耘野..基于综合结构势概念的海口原状红黏土K-G模型修正[J].工程地质学报,2013,(6):973-980,8.基金项目
国家科技支撑计划课题（2013BAK05B03），海南省自然科学基金（513144和513139）资助． （）
