冻土的动力特性研究及其参数确定

Research on dynamic characters of frozen soil and determination of its parameters

在分析黑龙江省德都县震害基础上，提出季节冻土动力特性研究的必要性。根据大量低温动三轴应力－应变实验资料给出冻土的动弹模量、动泊桑比、动剪切模量、动阻尼比的数值及它们与冻土温度、振动频率的关系。

Based on the analysis of earthquake damages in Dedu County of Heilongjiang Province and the experimental data from dynamic triaxial stress strain test of frozen soil in low temperature, this paper presents the necessity of research of the dynamic characters of seasonal frozen soil, and gives out the calculated result of the values of elastic modulus, Poisson′s ratio, shear modulus and damping ratio of frozen soil under dynamic conditions,and also their relations with temperature of frozen soil and frequency of cyclic loading.