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采用邓肯E-B模型模拟面板堆石坝体时考虑某高面板堆石坝面板分期施工与浇筑的特点,建立准确模拟面板特性的子模型,用接触面单元模拟坝体与面板的接触面及面板缝的相互作用,分析了该高面板堆石坝在稳定期、蓄水期和校核洪水期的面板周边缝变形规律,研究了周边缝随上游水位的变形规律,探究周边缝变形量和坝体整体变形规律,并与类似坝高的面板堆石坝结果进行比较。结果表明,该高面板堆石坝模型在不同时期的周边缝变形符合工程实际,在可接受范围内;靠近河床的面板的垂直缝基本上为受压缝,靠近两岸山体的面板垂直缝为张开缝;周边缝三向位移随上游水位的变化及顺坝轴向呈现一定的规律,与坝体沉降有一定的联系。
When using the Duncan EB model to simulate the face rockfill dam, considering the characteristics of staged construction and pouring of a high CFRD, a submodel that accurately simulates the characteristics of the faceplate is established, and the interface between the dam body and the faceplate and the panel seam The deformation law of the perimeter seam of the high face rockfill dam during the stabilization period, the storage period and the check flood period is analyzed. The deformation law of the perimeter seam with the upstream water level is studied. The deformation of the perimeter seam and the deformation of the dam The overall deformation law, and with a similar dam height of the CFRD results. The results show that the deformation of the perimetral joints at different periods of rockfill dam model is in accordance with the engineering practice and is within the acceptable range. The vertical seam near the riverbed is basically a compression joint, and the vertical seam near the plateau of the two sides is Zhang The three-dimensional displacement of the perimeter seam changes with the change of the upstream water level and the axial direction of the dam presents certain rules, which has some connection with the dam settlement.