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http://dx.doi.org/10.5000/EESK.2008.12.1.089

Characteristic Investigation of the Bedrock Earthquake Records for the Structural Time-History Seismic Analyses  

Kim, Yong-Seok (국립목포대학교)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.12, no.1, 2008 , pp. 89-95 More about this Journal
Abstract
Until recently lots of time-history seismic analyses were performed with the earthquake motions recorded at the soft soil surface without taking into account the effects of the soft soil amplification. However, it is important to utilize the bedrock seismic motions for the rational seismic analyses of a structure considering the site soil conditions. In this study, 26 bedrock earthquake records were selected from publicly available 1557 seismic records provided by the Pacific Earthquake Engineering Research Center (PEER) for the study, and the characteristics of them were investigated. Study results showed that it is not reasonable to estimate earthquake acceleration intensity from the magnitude of an earthquake without considering the site soil conditions and it is also hard to draw any general relationships between earthquake acceleration intensity, earthquake magnitude and epicenter distance with bedrock earthquake records in the PEER database. However, 26 bedrock earthquake records selected in this study can be utilized for the time-history seismic analyses of a structure-soil system as bedrock earthquake ones, and it is also confirmed that it is necessary to take into account acceleration intensity, magnitude, epicenter distance and site conditions simultaneously for the proper use of those selected earthquake records.
Keywords
soft soil amplification; bedrock earthquake record; acceleration intensity; magnitude; epicenter distance; time-history seismic analysis;
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