摘要
合理确定覆盖层和坝体的本构模型参数对正确预测覆盖层上面板坝应力应变特性十分重要。结合那兰水电站面板堆石坝变形观测资料及覆盖层大型载荷试验结果,采用"南水"双屈服面弹塑性模型反馈分析了坝体和覆盖层的本构模型参数,并采用反馈所得参数进一步分析了坝体的应力变形分布情况。结果表明,采用反馈分析参数计算所得的坝体变形与相应的实测值吻合较好。
Reasonable determination of the constitutive parameters of overburden and dam materials is of great impor- tance for predicting stress and strain behavior of concrete facing rockfill dam （CFRD） built on overburden. According to the field deformation observations of Nalan hydropower station and large-scale loading tests of overburden, the well- known Nanshui double yield surface elastic plasticity model is used to feedback analysis of constitutive parameters of over- burden and dam materials. Then the deformation and stress behavior of dam body are analyzed by using parameters with feedback analysis. The results show that the deformation parameters of dam body obtained by feedback analysis are con- sistent with the measured values.
出处
《水电能源科学》
北大核心
2011年第8期71-74,共4页
Water Resources and Power
关键词
面板堆石坝
覆盖层
反馈分析
那兰水电站
concrete facing rockfill dam（CFRD）
overburden
feedback analysis
Nalan hydropower station
