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该文分别采用沈珠江双屈服面弹塑性模型和清华弹塑性损伤模型描述堆石料和土与结构接触面,对巴贡面板堆石坝面板水平分缝进行了有限元分析。给出了水平分缝不同数量、宽度时面板的应力和挠度及其分布规律。水平缝的设置对坝体的应力变形基本无影响;水平缝的数量对面板的挠度影响小;随水平缝的数量增加,顺坡向应力出现匀化现象,且最大值有减小趋势;增大面板水平缝的宽度有助于减小面板的顺坡向压应力,但作用不明显;增加面板与防浪墙缝宽度时,有利于减小面板的顺坡向压应力。
In this paper, the finite element analysis of the horizontal seam of the Bajng Face Rockfill Dam is carried out by using the Shenzhujiang double yield surface elasto-plastic model and the Tsinghua elastic-plastic damage model to describe the interface between the rockfill material and the soil. The stress and deflection of panel with different number and width of horizontal joints and its distribution are given. The horizontal seam has almost no effect on the stress and deformation of the dam. The number of horizontal seams has little effect on the deflection of the panel. With the increase of the number of horizontal seams, the stress on the slope is homogenized and the maximum value tends to decrease. The width of the large panel horizontal seam helps to reduce the forward compressional stress of the panel, but the effect is not obvious. When increasing the width of the panel and the gap, it is beneficial to reduce the compressional stress along the panel.