冻土屈服面与屈服准则的研究  

STUDY ON YIELD SURFACE AND YIELD CRITERION OF FROZEN SOIL

作　　者：朱志武[1] 宁建国[1] 马巍[2] 

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081 [2]中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,兰州730000

出　　处：《固体力学学报》2006年第3期307-310,共4页Chinese Journal of Solid Mechanics

基　　金：国家自然科学基金(10202001);中国科学院知识创新工程重大项目(KZCX1-SW-04)资助

摘　　要：基于广义塑性力学,分析了理想塑性冻土屈服面的一些具体特性,对冻土的体积屈服面进行了比较详尽的探讨.通过对已有屈服函数Matsuoka-Nakai屈服准则的修改,提出了一个冻土屈服函数,并对此函数进行了具体研究.通过和试验数据的对比,验证了所提出屈服函数的正确性,所提出的函数含有三个参数,随着温度的不同对冻土屈服面的形状和大小都有重要的影响.The present paper analyzed some basic characters of the yield surface of saturated frozen soil. Based on the generalized plastic mechanics, volume yield surface of frozen soil were discussed systematically. A closed yield surface of frozen soil was proposed by modifying Matsuoka-Nakai criterion. We acquired a satisfying result by comparison with Mohr-Coulomb criterion and validated its validity by contrasting test data with the proposed yield function. Moreover, three parameters k,ms and Pe associated with the proposed yield function are studied since they have significant influence on the size and shape of yield surface.

关 键 词：冻土 屈服面 屈服准则 广义塑性力学 

分 类 号：TU445[建筑科学—岩土工程]