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http://dx.doi.org/10.5000/EESK.2015.19.5.247

Evaluation of Seismic Load Level in Korea based on Global Recorded Earthquake Ground Motions  

Hwang, Kyung Ran (School of Civil, Environmental, and Architectural Engineering, Korea University)
Lee, Han Seon (School of Civil, Environmental, and Architectural Engineering, Korea University)
Kim, Sung Jig (Department of Architectural Engineering, Keimyung University)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.19, no.5, 2015 , pp. 247-256 More about this Journal
Abstract
This paper briefly introduces the design seismic loads in Korea (KBC 2009). Then, over 10,000 recorded earthquake ground accelerograms, with their magnitude ranging from 4.0 to 8.0 and their epicentral distance ranging from 0 to 200 km, were used to examine the appropriateness of seismic load defined in Korea known as a low-to-moderate seismicity region. The following conclusions are drawn based on the results: (1) The effective peak ground accelerations (EPA) of recorded earthquake accelerograms under $M{\leq}6.0$ and $R{\geq}15km$ appear to be less than that of MCE in Korea for all site conditions defined in KBC 2009. (2) The design spectrum (two-thirds of the intensity of MCE) in KBC 2009 is comparable to those of earthquake records in the magnitude 6 - 7 and the epicentral distance less than 50 km. Therefore, (3) the intensity of Korean design earthquake is considered to be overly high since the Korea peninsula is generally conceived to be a low-seismicity region.
Keywords
Seismic Load; Design Response Spectrum; Low-to-Moderate Seismicity Regions; Effective peak ground acceleration;
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