摘要
为了研究高温–高含冰量冻土的蠕变特性,开展了温度分别为-0.3℃,-0.5℃,-1.0℃,含水率分别为40%,80%,120%的冻结黏土单轴压缩蠕变试验。试验结果表明,无论应力多大、作用时间多长,高温–高含冰量冻结黏土单轴压缩蠕变过程都具有衰减特征;在相同的温度条件下,在相同时刻、含水率40%时冻土强度最大,含水率120%时次之,含水率80%时最小;还得到高温–高含冰量冻结黏土单轴压缩蠕变方程、应力–应变关系和长期强度方程的参数。
In order to study the creep characteristics of warm and ice-rich frozen soil, a series of uniaxial creep tests of frozen clay with water content of 40%, 80%, 120% at temperature of -0.3℃, -0.5℃, -1.0℃were conducted respectively. It was shown that the creep process of the warm and ice-rich frozen soil was always attenuate; at the same temperature and time, the strength of the frozen soil with 40% water content was the greatest, and that with 120% water content was greater than that with 80%..Furthermore, the parameters of the creep equation, long-term strength equation and relationship between stress and strain of the warm and ice-rich frozen soil were obtained.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2007年第6期848-852,共5页
Chinese Journal of Geotechnical Engineering
基金
中国科学院寒区旱区环境与工程研究所创新工程资助项目(2004104)
中国科学院知识创新工程重要方向资助项目(KZCX3-SW-351)
中国科学院知识创新工程重大资助项目(KZCX1-SW-04)
中国科学院国际合作重点项目(GJHZ0529)
关键词
高温-高含冰量冻土
蠕变方程
长期强度
应力-应变关系
warm and ice-rich frozen soil
creep equation： long-term strength
relationship between stress and strain
