Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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A Comparative Case Study of 2016 Gyeongju and 2011 Virginia Earthquakes

2016년 경주지진과 2011년 미국 버지니아지진에 대한 비교 연구 및 사례 분석

  • Kang, Thomas H.K. (Department of Architecture and Architectural Engineering, Seoul National University) ;
  • Jeong, Seung Yong (Department of Architecture and Architectural Engineering, Seoul National University) ;
  • Kim, Sanghee (Department of Architecture and Architectural Engineering, Seoul National University) ;
  • Hong, Seongwon (Engineering Research Institute, Seoul National University) ;
  • Choi, Byong Jeon (Department of Plant Architectural Engineering, Kyonggi University)
  • Received : 2016.11.20
  • Accepted : 2016.12.01
  • Published : 2016.12.30
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Abstract

A Gyeongju earthquake in the magnitude of 5.8 on the Richter scale (the moment magnitude of 5.4), which was recorded as the strongest earthquake in Korea, occurred in September 12, 2016. Compared with the 2011 Virginia earthquake, the moment magnitude was slightly smaller and its duration was 3 seconds, much shorter than 10 seconds of the Virginia earthquake, resulting in relatively minor damage. But the two earthquakes are quite similar in terms of the overall scale, unexpectedness, and social situation. The North Anna Nuclear Power Plant, which is a nuclear power plant located at 18 km away from the epicenter of the Virginia earthquake, had no damage to nuclear reactors because the reactors were automatically shut down as the design basis earthquake value was exceeded. Ground accelerations of the 2016 Gyeongju earthquake did not exceed the threshold value but the manual shutdown was carried out so that Wolsong Nuclear Power Site was not damaged. Damaged historic homestead house and masonry structures due to the Virginia earthquake have been repaired, reinforced, and rebuilt based on a long-term earthquake recovery project. Likewise, it will be necessary to carefully carry out an earthquake recovery planning program to improve overall seismic performance and to reconstruct the historic buildings and structures damaged as a result of the Gyeongju earthquake.

Keywords

References

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  1. A Study on the Consciousness Survey of Residents in Gyeong-Ju to Improve Earthquake Disaster Prevention Measures after the Occurrence of 9.12 Earthquake vol.18, pp.4, 2018, https://doi.org/10.9798/KOSHAM.2018.18.4.261