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http://dx.doi.org/10.5000/EESK.2014.18.6.271

Assessment of Dam Seismic Safety using the Relationship between Acceleration and JMA Intensity  

Kang, Gi-Chun (Dam & Watershed Maintenance Department, Water Resources Business Division, K-water)
Choi, Byoung-Seub (Dam & Watershed Maintenance Department, Water Resources Business Division, K-water)
Cha, Kee-Uk (Dam & Watershed Maintenance Department, Water Resources Business Division, K-water)
Cheung, Sang-In (Dam & Watershed Maintenance Department, Water Resources Business Division, K-water)
Lee, Jong-Wook (Infrastructure Research Center, K-water Institute)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.18, no.6, 2014 , pp. 271-278 More about this Journal
Abstract
Seismic intensity deduced from instrumental data has been evaluated using the empirical relationship between intensity and peak ground acceleration (PGA) during an earthquake. The Japan Meteorological Agency (JMA) developed a seismic intensity meter, which can estimate the real-time seismic intensity from seismic motions observed at a local site to evaluate the damage during the earthquake more correctly. This paper proposes a practical application of the JMA intensity to dams during the 2013 earthquake in Yeongcheon, Korea. In the present paper, seismic intensity was estimated from the relationships between accelerations observed at Yeongcheon Dam. Estimated seismic intensities were in the range of 0 to 3, which was verified from the displacements of dams and the variation of the ground water level observed at Yeongcheon dam during the earthquake. The JMA intensity, which is determined by considering the frequency, duration of cyclic loading, etc., was 0 (zero) and there was no damage to Yeoncheon dam during the earthquake.
Keywords
PGA; Seismic intensity; Earthquake; Dam; Frequency; Duration of cyclic loading;
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Times Cited By KSCI : 1  (Citation Analysis)
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