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本研究中以xx粘土心墙堆石坝工程实例为计算分析对象,应用中点增量法对粘土心墙堆石坝坝体在八级加载状态下的变形以及应力情况进行了计算分析。三维非线性有限元分析结果显示:该工程粘土心墙堆石坝应力应变符合基规律,坝体应力形态以及变形形态基本良好,心墙坝部分垂直方向沉降最大值与已建相关工程观测值基本一致,证实了三维非线性有限元分析计算方法具有高度可靠性。通过以上分析,以期通过对粘土心墙堆石坝进行三维非线性有限元分析的方式,获得粘土心墙堆石坝在应力以及变形方面的基本规律以及表现特征。
In this study, the engineering example of xx clay core rockfill dam was taken as the object of calculation and analysis. The deformation and stress of the dam with the core-rockfill dam in eight-stage loading were calculated and calculated by the mid-point incremental method. The results of three-dimensional nonlinear finite element analysis show that the stress and strain of this project clay core rockfill dam conform to the basic law, and the stress and strain of the dam body are basically good. The vertical settlement of the core wall dam is basically the same as the observed value Consistent, confirmed the three-dimensional non-linear finite element analysis and calculation method with high reliability. Through the above analysis, we hope to get the basic rules and performance characteristics of clay core rockfill dam in stress and deformation by means of three-dimensional nonlinear finite element analysis of clay core rockfill dam.