摘要
邓肯 张E B模型在混凝土面板堆石坝中得到了较为广泛的应用。大量计算研究表明,许多时候模型参数变化对计算结果的影响比模型本身的影响还要大。结合具体工程的试验和计算研究成果,对模型参数按比例分别增减,用有限元法计算某一面板坝的应力、位移等。每个参数的增减变化都将引起应力、位移的相应变化,其中参数Kb,φ0对面板坝应力、位移的影响最显著。分析还表明,对参数m的取值应特别慎重。
Duncan-Chang E-B model has been used widely in CFRD(concrete faced rock fill-dam). A lot of computation researches indicate that at most of time the effect of model parameters on the computed results is larger than that of the model itself. Based on the laboratory and computation research, the stress and deformation of the CFRD dam were analyzed by FEM with each of the parameters increased or decreased in proportion respectively. The results show that the stress and deformation would change with the change of parameter values, and among them the effects of the parameters K_b,φ_0 are most obvious. The research also indicates that special attention should be paid to the selection of parameter m in FEM analysis.
出处
《长江科学院院报》
CSCD
北大核心
2004年第6期41-44,共4页
Journal of Changjiang River Scientific Research Institute
