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Effects of characteristic parameters of isolation system on seismic response of isolated nuclear power plants

机译：隔离系统特征参数对隔离核电厂地震响应的影响

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摘要

Seismic isolation is increasingly being used in both traditional and industrial structures for its ability to reduce structural responses while effectively protecting systems and components, such as machinery. After applying isolation, the standardize design can be achieved during seismic design of nuclear power plant. However, the seismic response of nuclear structure with different isolation characteristic parameters under different ground motions has not been fully studied. In this paper, a new generation passive nuclear power plant model was simulated with finite element method. The acceleration response, deformation, seismic mitigation efficiency, and response discreteness of nuclear structures with different isolation characteristic parameters were analyzed. The effect degree of isolation characteristic parameters on seismic response of nuclear structures was investigated. Performance spaces are introduced as an alternate method for evaluating responses of nuclear structures. The results show that isolation systems largely reduce both the mean value and discreteness of seismic response of nuclear structures.
机译：传统的和工业结构都越来越多地采用隔震技术，因为它具有减少结构响应，同时有效保护机械等系统和部件的能力。应用隔离后，可以在核电站的抗震设计中实现标准化设计。但是，对于不同地震动条件下具有不同隔离特征参数的核结构的地震反应尚未得到充分研究。本文采用有限元方法对新一代无源核电站模型进行了仿真。分析了具有不同隔离特征参数的核结构的加速度响应，变形，减震效率和响应离散性。研究了隔离特征参数对核结构地震响应的影响程度。引入性能空间作为评估核结构响应的替代方法。结果表明，隔离系统在很大程度上降低了核结构地震响应的均值和离散性。

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