【摘要】 采用高围压下的幂函数流变本构模型进行堆石体应力变形计算,推导该本构模型在三维有限元分析中的具体算法和实现步骤,对水布垭面板堆石坝进行了考虑堆石流变性的应力应变分析。结果表明,考虑堆石流变后的坝体沉降有明显的增加,对面板的应力变形状态有较大影响。因此,对于分期浇筑面板、分期蓄水的水布垭高面板堆石坝,选用合适的流变模型正确模拟堆石体的变形特性,以便采用合适的施工程序减小面板应力变形具有重要意义。更多还原

【Abstract】 Based on creep constitutive model of power function,numerical simulation and detailed algorithm applied to the analysis of general FEM is presented for the stress and deformation analysis of Shuibuya concrete faced rockfill dam.The computation results show that the deformation of the dam appears in evident increment and the creep has an obvious influence on the deformation and stress of the face slab.It is very important that the reasonable creep model is adopted to simulate the deformation of the rockfill dam and the reasonable construction processes are also adoped to decrease the deformation and stress of the face slab.更多还原