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通过深覆盖层上高堆石坝振动台试验与动力数值分析相互验证研究 ,表明考虑坝体地基相互作用的数学、力学模型是合理、正确的 .数值计算能非常方便地调整各种物理力学参数 ,从而又能指导模型试验 .通过振动台试验与数值分析相互验证的成果 ,针对深覆盖层上高堆石坝的动力特性得出系统自振频率随地震历时的变化规律 ,加速度放大系数与地震量级大小的关系 ,以及对《水工建筑物抗震设计规范》中仅要求进行两向地震输入和针对不同的地震烈度采用相同的加速度分布系数提出建议 .
Through the mutual verification of shaking table test and dynamic numerical analysis of rockfill dam on deep overburden, it is shown that mathematical and mechanical models considering the interaction of dam foundation are reasonable and correct.Numerical calculations can easily adjust various physical and mechanical parameters , Which can guide the model test.Based on the results of mutual verification of shaker test and numerical analysis, the variation of natural frequency of the system with the earthquake duration is obtained according to the dynamic characteristics of the rockfill dam with deep overburden. The acceleration amplification coefficient and earthquake The relationship between magnitude and magnitude, as well as the proposed “seismic code for hydraulic structures” requires only two-way seismic input and for different seismic intensity using the same acceleration distribution coefficient to make recommendations.