介绍了一种由碾压混凝土与胶凝砂砾石组合形成的RCC-CSG复合材料坝，该坝型可充分发挥坝体强度、节省材料、减小环境影响，且两种材料筑坝方式均为碾压成形，便于施工。推导了适用于内外型复合材料层面垂直应力计算的类均质体公式与抗滑稳定系数计算的分段求和法公式。通过计算某复合重力坝的单一材料层面与复合材料层面，并与有限元计算结果比较，表明类均质体方法可以很好地描述层面应力分布形态，分段求和法计算的抗滑稳定系数与有限元法计算结果误差在允许范围内，两种方法可用于内外型复合材料层面计算。%The composite dam, made by Roller Compacted Concrete (RCC) and Cemented Sand & Gravel (CSG), has several advantages, including full material strength utilization, less construction material consumption and slight environment impact, and easy construction as both of two materials can being rolled into shape. The formula for calculating vertical stress based on quasi-homogeneous body method and the formula for calculating sliding stability based on standard step method are derived for the composite layers of RCC-CSC composite dam by considering the differences of properties between two materials. A RCC-CSC gravity dam is analyzed by using proposed methods and the results are compared with the results of finite element method. The comparison shows that the quasi-homogeneous body method can well describe stress distribution, and the error of sliding stability calculated by standard step method and finite element method respectively is in allowable range. The proposed two formulas can be used in the calculation of RCC-CSC composite layers.
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