上海人工冻结黏土单轴无侧限抗压强度试验研究

对3种不同含水率的上海冻结黏土进行了单轴无侧限抗压强度试验。通过对试验数据的分析可知，单轴抗压强度受温度、加载速率、含水率及干密度等因素影响；温度越低、加载速率越大，冻土强度越高。得到了抗压强度与温度的指数函数模型参数和抗压强度与加载速率的幂函数模型参数，建立了以温度、加载速率、含水率（干密度）为变量的强度模型方程。通过正交试验分析得出，各因素对冻土抗压强度的影响程度由大到小依次为温度、加载速率、含水率。

Uniaxial unconfined compressive strength test on artificially frozen clay in Shanghai

Uniaxial unconfined compressive strength tests are conducted on Shanghai frozen clay which have three different water contents.Through the analysis of experimental results,the compressive strength of frozen clay is affected by temperature,loading rate,water content and dry density.Test results show that the lower the temperature and the greater the loading rate,the higher the compressive strength of frozen clay.The parameters of exponential function model concerning compressive strength and temperature as well as the parameters of power function model concerning compressive strength and loading rate are deduced.It is also established the equation of compressive strength based on the variables of temperature,loading rate and water content(or dry density).By orthogonal analysis,the influences of each factor on compressive strength of frozen clay are in the following descending order: temperature,loading rate and water content.