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中文摘要：
在研究有限元模型边界确定方法的基础上,通过建立库盘大范围和近坝区小范围2种尺度有限元模型,并由库盘模型变形计算结果提取近坝区模型的边界条件,提出高混凝土坝变形性态的库盘影响分析方法,分析库盘变形对大坝变形性态的影响。典型实际工程计算结果表明,高坝大库工程,库盘作用对大坝变形影响明显,尤其坝前大库容工程在应用实测资料分析混凝土坝运行性态、反分析结构力学参数和变形监控指标时,应该考虑库盘变形的影响,以确保充分掌握大坝运行性态,有效监控大坝的安全运行。
英文摘要：
FEM models of two different scales,including the reservoir basin and near-dam area,were established based on study of the method for determining the model boundaries. By extracting the boundary condition of the near-dam area model from deformation results of the reservoir basin model,a reservoir basin effect analysis method is proposed to study the effect of reservoir basin deformation on the deformation behavior of high concrete dams. Calculated results of a typical project show that reservoir basin deformation has a significant effect on the deformation of a high concrete dam with a large reservoir capacity. In the study of the operational performance and back analysis of mechanical parameters and deformation monitoring indices of high concrete dams with measured data,especially for the project with a wide area of water surface in front of it and a large reservoir capacity,the effect of reservoir basin deformation should be taken into consideration so as to fully understand the operational performance of dams,and effectively monitor the dam operation in safe conditions.
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