摘要
根据大量的冻土单轴压缩试验资料,本文提出可将冻土的应力-应变性状分为9种类型,并分别给出了相应的应力-应变方程。试验结果表明,对一定土质及含水量的冻土,其应力-应变性状主要取决于应变率及温度。根据9种类型应力-应变性状的应变率及温度范围,作者首次提出了冻土单轴压缩本构关系类型图。
Based on the miaxial constant strain-rate compression tests on frozen soils, it is proposed that the stress-strain behaviour of frozen soil can be classified into 9 types and their corresponding stress-strain equations are also given. The test results show that for a certain type of soil its stress-strain behaviour mainly depends upon strain rate and temperature. According to the ranges of strain rate and temperature for the 9 types of stress-strain behaviour, the constitutive relation maps of various kinds of frozen soils in uniaxial compression were firstly presented. And, they are important for the design of frozen soil foundation and structures.
出处
《冰川冻土》
CSCD
北大核心
1992年第3期210-217,共8页
Journal of Glaciology and Geocryology
基金
国家自然科学基金资助项目
关键词
冻土
单轴压缩
应力
constitutive relation, frozen soil, stress-strain behaviour, uniaxial compression, viscoelastic -plastic
