【摘要】 通过大型三轴蠕变试验,对九甸峡面板堆石坝堆石料进行了研究,对其蠕变机理和模型进行了探讨,并对蠕变模型参数的影响因素和取值范围进行了分析。九甸峡堆石料轴向蠕变在半对数坐标中与时间基本上呈线性关系,而体积蠕变则在双对数坐标中与时间有良好的线性关系。因此,可采用对数函数εa=a+blgt描述轴向蠕变与时间的关系,采用幂函数εv=αtβ拟合堆石料体积蠕变与时间的关系,模型参数可以通过三轴蠕变试验获得。更多还原

【Abstract】 The rockfill creep behaviors of the Jiudianxia CFRD were studied by a triaxial creep model test.The test results revealed that the axial creep strain follows a logarithmic law εa = a + blgt,while the volumetric creep behavior can be well represented by a power law εv = ptq.The creep mechanism and factors that affects model parameters were discussed,and the model parameters could be obtained from the triaxial test data.更多还原