Near-fault ground motions, potentially with large amplitude and typical velocity pulses, may signifi cantly impact the performance of a wide range of structures.The current study is aimed at evaluating the safety implications of the near-fault effect on nuclear power plant facilities designed according to the Chinese code.To this end, a set of near-fault ground motions at rock sites with typical forward-directivity effect is examined with special emphasis on several key parameters and response spectra.Spectral comparison of the selected records with the Chinese and other code design spectra was conducted.The bi-normalized response spectra in terms of different corner periods are utilized to derive nuclear design spectra.It is concluded that nuclear design spectra on rock sites derived from typical rupture directivity records are significantly influenced both by the earthquake magnitude and the rupture distance.The nuclear design spectra specified in the code needs to be adjusted to reflect the near-fault directivity effect of large earthquakes.
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机译:应用项目反应理论对友谊质量量表修定—以结构方程模型、层面理论多种技术支持修定量表的质量 Modifying Friendship Quality Questionnaire with Item Response Theory Approach——Validating with Facet Theory and Structure Equation Techniques