西安理工大学学报2017，Vol.33Issue(4)：408-412,5.DOI:10.19322/j.cnki.issn.1006-4710.2017.04.006
基于等含水率试验结果的非饱和原状黄土本构模型
Constitutive model for unsaturated natural loess based on the law of the constant water content tests result
摘要
Abstract
According to the constant water content test results on the unsaturated natural loess carried out in China,the macro constitutive model for unsaturated natural loess,which can reflect the structure and water sensitivity of intact loess,is established based on the Barcelona model and the mechanical response of model in the isotropic compression test with triaxial shear test verified by comparing with the law of laboratory test results.The results indicate that the model can reflect the character that the consolidation lines of different water contents in isotropic tests are like each other before the yield stress and the compression lines tend to coincide after yield stress.The model can also reflect that the elastic modulus decreases first and then increases with the increase of confining pressure and the path in the e-lgp space tend to turn obviously at a low confining pressure for the middle water content samples in compression triaxial tests.The model has 11 parameters,all of which can be obtained by constant water content tests.关键词
原状黄土/本构模型/结构性/水敏性Key words
natural loess/constitutive model/structure/water sensitivity分类
建筑与水利引用本文复制引用
胡海军,崔玉军,骆亚生..基于等含水率试验结果的非饱和原状黄土本构模型[J].西安理工大学学报,2017,33(4):408-412,5.基金项目
国家自然科学基金青年科学基金资助项目(51409220) （51409220）
西北农林科技大学基本科研业务费专项资金资助项目(2014YB049) （2014YB049）
西北农林科技大学国际科技合作基金资助项目(A213021502) （A213021502）
