摘要
针对高面板堆石坝对变形控制要求高的问题，利用中井本构关系模型及其稳定、快速收敛的 欧拉向后应力积分算法，在局部误差和整体误差都得到精确控制的情况下，用弹塑性有限元方法对 面板堆石坝进行有限元分析计算。同时，提出了按设计阶段和施工阶段分别采用不同的方法确定 模型参数，从而使得选取的模型参数尽可能反映工程实际，提高数值计算精度。
Aimed at the requirements for the deformation control of high concrete-faced rock-fill dams, the Nakai＇s constitutive model and a stable and fast convergent algorithm for the numerical integration of isotropic elasto-plastic models are used in the elasto-plasticity finite element calculation of the deformation of rock-fill dams under the precise control of local and global tolerance. It is proposed that the parameters of the model should he determined in different ways in the design stage and construction stage in order to reflect the practical situation of projects and improve the precision of numerical analysis.
出处
《水电自动化与大坝监测》
2005年第6期49-51,共3页
HYDROPOWER AUTOMATION AND DAM MONITORING
关键词
混凝土面板堆石坝
弹塑性本构模型
数值计算
模型参数反演
concrete-faced rock-fill dam
elasto-plastic constitutive model
numerical analysis
back analysis of model parameters
