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首页> 外文期刊>KSCE journal of civil engineering >Flexible Foundation Effect on Seismic Analysis of Roller Compacted Concrete (RCC) Dams Using Finite Element Method
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Flexible Foundation Effect on Seismic Analysis of Roller Compacted Concrete (RCC) Dams Using Finite Element Method

机译:有限元法在碾压混凝土坝抗震分析中的柔性地基效应

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摘要

Recently, Roller Compacted Concrete (RCC) dams have become one of the most applicable types of dams across the globe. However, the basic challenge in analysis of RCC dams is evaluation of the actual response under earthquake excitations with considering flexible foundation and impounded water. For this purpose, a finite element model of RCC Dam-Reservoir-Foundation is accurately developed and dynamic time history analysis is utilized to assess the seismic responses in terms of acceleration, displacements, stresses, cracking patterns and crack propagation by implementation of concrete damaged plasticity model. A verification model is carried out to show the work accuracy. Based on these explanations, the obtained results showed that, however, the hydrodynamic pressure due to the reservoir water had great influence on seismic responses of the RCC dam with rigid foundation especially in terms of displacement response but overall responses of the dam are greatly fluctuated while flexible foundation is taken into consideration.
机译:最近,碾压混凝土(RCC)水坝已成为全球最适用的水坝类型之一。但是,RCC大坝分析的基本挑战是在考虑弹性基础和蓄水的情况下评估地震激励下的实际响应。为此,精确开发了碾压混凝土坝-水库-地基的有限元模型,并利用动态时程分析来评估混凝土的可塑性破坏,从而根据加速度,位移,应力,裂缝模式和裂缝传播评估地震响应。模型。进行验证模型以显示工作准确性。根据这些解释,得出的结果表明,水库水引起的水动力压力对具有刚性基础的RCC大坝的地震响应有很大影响,特别是在位移响应方面,但大坝的整体响应波动很大。考虑了灵活的基础。

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