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http://dx.doi.org/10.14481/jkges.2020.21.1.5

Typical Seismic Intensity Calculation for Each Region Using Site Response Analysis  

Ahn, Jae-Kwang (Earthquake and Volcano Research Div. Korea Meteorological Administration)
Son, Su-Won (Seismic Simulation Test Center, Pusan National University)
Publication Information
Journal of the Korean GEO-environmental Society / v.21, no.1, 2020 , pp. 5-12 More about this Journal
Abstract
Vibration propagated from seismic sources has damping according to distance and amplification and reduction characteristic in different regions according to topography and geological structure. The vibration propagated from the seismic source to the bedrock is largely affected by the damping according to the separation distance, which can be simply estimated through the damping equation. However, it is important to grasp geological information by location because vibration estimation transmitted to the surface are affected by the natural period of the soil located above the bedrock. Geotechnical investigation data are needed to estimate the seismic intensity based on geological information. If there is no Vs profile, the standard penetration tests are mainly used to determine the soil parameters. The Integrated DB Center of National Geotechnical Information manages the geotechnical survey data performed on the domestic ground, and there is the standard penetration test information of 400,000 holes. In this study, the possibility of quantitation the amplification coefficient for each region was examined to calculated the physical interactive seismic intensity based on geotechnical information. At this time, the shear wave column diagram was generated from the SPT-N value and ground response analysis was performed in the target area. The site coefficients for each zone and the seismic intensity distribution for the seismic motion present a significant difference according to the analysis method and the regional setting.
Keywords
Site response analysis; Amplification coefficient; Site effect; Seismic intensity;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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