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该文研究了混凝土面板堆石坝挤压墙以及其与面板接触面设置不同填料时对大坝应力变形的影响规律。应用三维有限元分析方法,对堆石料与土和结构接触面,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,计算了面板与挤压墙之间采用不同填料时大坝的应力变形。结果表明:面板与挤压墙之间的不同填料对坝体变形应力的影响很小;采用挤压墙施工方法有助于减小面板的拉应力,并不会导致面板应力明显恶化;面板与挤压墙之间设置乳化沥青等填料有利于减小面板的应力;不同填料对面板应力的影响有较大差异,但基本分布规律是一致的。
In this paper, the influence law of the stress and deformation of the dam during the extrusion of the concrete faced rockfill dam and the different filler placed on the contact surface of the concrete faced rockfill dam is studied. Using the three-dimensional finite element analysis method, the contact surface of rockfill material with soil and structure was analyzed respectively by using the double-yielding surface elastic-plastic model of Shenzhu River and the elasto-plastic damage model of Tsinghua University. The influence of the different filling materials Stress deformation. The results show that the different packing between the panel and the extrusion wall has little effect on the deformation stress of the dam. The construction method of the extrusion wall helps to reduce the tensile stress of the panel and does not lead to significant deterioration of the panel stress. Extrusion wall between the setting of emulsified asphalt filler is conducive to reduce the panel stress; different filler on the panel stress are quite different, but the basic distribution is consistent.