【摘要】 采用等效粘弹性模型对某面板堆石坝进行了三维动力有限元分析,分别计算了坝体在不同地震设计烈度(峰值加速度为0.1g~0.4g)下面板堆石坝的地震动力反应。结果表明:坝体的峰值加速度随着输入地震动的增大而近似线性增大;但是峰值加速度的放大倍数随着输入地震动的增大而非线性减小。地震峰值加速度变化规律对面板堆石坝的抗震设防具有一定的借鉴意义。更多还原

【Abstract】 The 3-D dynamic finite element analysis is used for a concrete faced rockfill dam with equivalent viscoelastic model.The seismic dynamic response result of CFRD is obtained by calculating under different design intensity(peak acceleration 0.1g~0.4g).Results show that the dam’s peak acceleration approximate linear increases with the increase of input ground motion,but magnification factor of peak acceleration reduces nonlinearly with the increase of input ground motion.In this paper,variation of seismic peak acceleration has some reference significance for seismic fortification of concrete face rockfill dam.更多还原