摘要
在大量低温动三轴试验资料基础上,对冻土的动应力-应变关系试验成果进行了分析,给出试验温度、围压、土的含水量、轴向动荷载的振动频率和振动次数等对冻土的阻尼比的影响关系,得出了冻土温度、围压、频率是影响冻结粉质粘土动阻尼比的主要因素,即随着温度的降低、围压的减小、振动频率的增加,冻土的阻尼比减小的结论,从而为进一步深入开展冻土场地动力特性研究提供了基础的试验资料与研究结果。
This paper analyses test data of dynamic stress-strains relationship for frozen soil, and presents the relation between damping ratio of frozen soil and experimental temperature, confining pressure, water content, vibratory frequency and time of axial dynamic stress, which based on a vast amount of information of low temperature dynamic triaxial shear experiment. The test results indicate that main influencing factors to damping ratio are experimental temperature, confining pressure and frequency. As temperature and confining pressure decreases, frequency increases, while dynamic damping ratio decreases. This offers basic test materials and results for further study of dynamic properties of frozen soil layer.
出处
《哈尔滨建筑大学学报》
EI
北大核心
2002年第6期22-25,共4页
Journal of Harbin University of Civil Engineering and Architecture
基金
国家自然科学基金(40071021)
中国科学院冻土工程国家重点实验室基金
