西安科技大学学报2017，Vol.37Issue(2)：154-158,5.DOI:10.13800/j.cnki.xakjdxxb.2017.0202
冻融损伤岩石的强度准则研究
Study on strength criterion of freezing-thawing damage rock
摘要
Abstract
Strength criterion has important significance in theoretical research and engineering application.Considering the randomness of rock defects,the damage constitutive model of frozen rock is established and the model parameters are derived.The damage statistical strength criterion of rock is discussed according to the extreme conditions of the maximum principal points of the model,and its validity is verified by experimental results.The results of the study show that:The strength criterion of freezingthawing damage established in this paper can indicate the relationship between the internal stress and strain parameters under different freeze-thaw cycles,and reflect the characteristics of the rock strength Mohr envelope curve.The theoretical expression of model parameters can reflect the general regularity of freeze thaw damage and rock deformation and failure,which greatly enhance the adaptability of the model,and can provide theoretical basis for the research of cold geotechnical engineering materials and structure strength.关键词
冻融损伤/本构模型/模型参数/强度准则Key words
freezing-thawing damage/constitutive model/model parameter/strength criterion分类
建筑与水利引用本文复制引用
张慧梅,彭川,杨更社,叶万军,申艳军,刘慧..冻融损伤岩石的强度准则研究[J].西安科技大学学报,2017,37(2):154-158,5.基金项目
国家自然科学基金(11172232,41272340,41302228) （11172232,41272340,41302228）
陕西省重点科技创新团队计划(2014KCT-30) （2014KCT-30）
陕西省教育厅专项基金(11JK0542) （11JK0542）
