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中文摘要：
应用椭圆-抛物双屈服面模型进行心墙堆石坝三维有限元计算，考察了心墙料的模型参数a，KG，n，h，t，M1和M2分别单独变化（而其他6个参数保持不变）对坝体最大沉降点计算沉降的影响．考察结果表明，a的变化对计算沉降的影响甚微；KG，n，h和t的变化对计算沉降的影响趋势一致，均为参数值越大计算沉降越小．M1大于临界值时，计算沉降随M1的减小而增大，反之，计算沉降随M1的减小而减小；M2的取值必须大于M，当M2〉M时，M2的变化对计算沉降几乎没有影响．
英文摘要：
The parameters of the core material of a, KG, n, h, t, M1 , M2 are studied in three-dimensional finite element calculation of a core type rockfill dam in the ellipse-parabola double yield surface model. Influences of the parameters of the calculated settlement of the maximum settlement point of the dam are discussed. Results show that parameter a has little influence on the calculated settlement. Parameters KG, n, h, and t have the same influence： the larger the parameter is, the smaller the calculated settlement is. When M1 is larger than the critical value M, the calculated settlement increases with the decrease of M1, and the calculated settlement decreases with the decrease of Ml while Ml is smaller than the critical value M. Variation of parameter M2 has little influence on the calculated settlement hut it must he larger than M.
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Elasto-plastic Constitutive Model of Soil-Structure Interface in Consideration of Strain Softening a
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