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http://dx.doi.org/10.5000/EESK.2022.26.5.181

Assessment of Seismic Response Spatial Variation Through the Analysis of Earthquake Records at Hamaoka Nuclear Power Plant  

Ji, Hae Yeon (Advanced Structures and Seismic Safety Research Division, Korea Atomic Energy Research Institute)
Ha, Jeong Gon (Advanced Structures and Seismic Safety Research Division, Korea Atomic Energy Research Institute)
Kim, Min Kyu (Advanced Structures and Seismic Safety Research Division, Korea Atomic Energy)
Hahm, Dae Gi (Advanced Structures and Seismic Safety Research Division, Korea Atomic Energy)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.26, no.5, 2022 , pp. 181-190 More about this Journal
Abstract
In assessing the seismic safety of nuclear power plants, it is essential to analyze the structures using the observed ground motion. In particular, spatial variation in which the characteristics of the ground motion record differ may occur if the location is different within the site and even if the same earthquake is experienced. This study analyzed the spatial variation characteristics of the ground motion observed at the structure and site using the earthquake records measured at the Hamaoka nuclear power plant. Even if they were located on the same floor within the same unit, there was a difference in response depending on the location. In addition, amplification was observed in Unit 5 compared to other units, which was due to the rock layer having a slower shear wave velocity than the surrounding bedrock. Significant differences were also found in the records of the structure's foundation and the free-field surface. Based on these results, the necessity of considering spatial variation in the observed records was suggested.
Keywords
Spatial variation; Hamaoka nuclear power plant; Suruga Bay earthquake; Free field ground motion response spectrum;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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