邓肯张E-B模型对中等高度面板坝沉降计算的适应性分析

The adaptability analysis of Duncan Chang EB model for the settlement calculation of medium-altitude dam with concrete panelprotection

结合某水库混凝土面板堆石坝坝体变形的二维非线性有限元计算,通过与实测沉降值的比较验证邓肯张E-B模型对中等高度面板坝沉降计算的适应性。计算结果表明,采用邓肯张E-B模型计算的坝体沉降与实测分布规律一致,但实测值较计算值平均大30%左右,因此,应合理选取模型参数,以比较准确地估计坝体沉降变形。

Cmbined with two-dimensional nonlinear finite element method of a reservoir with a concrete face rockfill dam deformation,the adaptation of Duncan Chang E-B model for the settlement calculation of medium-altitude rockfill dam with concrete panel slope protection is verified by comparison with the measured value of the settlement.The results show that the dam settement calculation by Cuncan Chang E-B model basically consistent with the measured distribution law,but only the measured values are normally larger about 30% on average than the calculated value.Therefore,it should select a reasonable model parameters,in order to more accurately estimate the settlement of dam deformation.