【摘要】 基于动力有限元理论建立了坝体-地基-库水体系的数值模型,分析了库水和地基联合作用对结构动力响应的影响,探讨了计算过程中涉及的动力响应输入和地震波处理等相关问题,并以某水电站岸坡坝段为例,比较了坝体-地基-库水模型与传统附加质量-无质量地基模型的地震响应结果。结果表明,与传统附加质量-无质量地基模型相比,坝体-地基-库水模型的位移和应力均有较大的降低,可为设计安全储备提供参考。更多还原

【Abstract】 Based on the theory of dynamic finite element method,numerical model of dam-foundation-reservoir system is presented.The influence of joint action between reservoir and foundation on dynamic response of structure is analyzed.And the techniques such as dynamic response input and seismic wave treatment in calculation process are discussed.Taking bank slope dam section of hydropower station for an example,the result of seismic response obtained with dam-foundation-reservoir model is compared with that of additional mass-massless foundation model.The results show that the dynamic displacement and stress obviously decrease,which can provide reference for design of hydro structure safety.更多还原