摘要
针对不同黏粒含量的高温冻土,基于Eshelby夹杂理论分析了冰含量与等效变形模量之间的关系,在此基础上引入模量比对现有的Monismith累积塑性应变模型进行修正,得到了一种新的高温冻土累积塑性变形预测模型,并采用室内试验结果进行验证。结果显示:模型数据与试验数据具有较好的吻合度。新提出的修正Monismith累积塑性应变预测模型表征了冰含量与土体变形模量之间的关系,其可以较准确地模拟高温冻土整个动应变过程,并且能够反映组构变化所诱发的高温冻土累积变形特征的不同。
For high-temperature permafrost with different clay grain contents,the relationship between ice content and equivalent deformation modulus was analyzed based on Eshelby inclusion theory,and then the modulus ratio was used to modify the existing Monismith cumulative plastic strain model to obtain a new cumulative plastic deformation prediction model for high-temperature permafrost,which was verified by using the indoor test results.The results show that the model data have good agreement with the experimental data.The newly proposed modified Monismith cumulative plastic strain prediction model characterizes the relationship between ice content and soil deformation modulus,which can simulate the whole dynamicstrain process of high-temperature permafrost more accurately and can reflect the difference of cumulative deformation characteristics of high-temperature permafrost induced by the group structure change.
作者
任戈
刘俊芳
刘鸿飞
白瑞刚
Ihsan Ullal
REN Ge;LIU Junfang;LIU Hongfei;BAI Ruigang;Ihsan Ua(School of Civil Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Key Laboratory of Geological Hazards and Geotechnical Defense in Sand and Arid Areas,Autonomous Region Higher Education Institution,Inner Mongolia University of Technology,Hohhot 010051,China)
出处
《内蒙古工业大学学报（自然科学版）》
2024年第4期368-372,共5页
Journal of Inner Mongolia University of Technology：Natural Science Edition
