Study on Acceleration Response Spectra for Seismic Design Based on Observed Records in Hokkaido, Japan

Abstract eng:
In Hokkaido and around that, many earthquakes occurred. Just within the past 15 years, a number of earthquakes with a Magnitude of 7 or higher have occurred, such as the 1993 Kushiro-oki Earthquake (M7.5), the 1993 Hokkaido Nansei-oki Earthquake (M7.8), the 1994 Hokkaido Touhou-oki Earthquake (M8.2), the 2003 Tokachi-oki Earthquake (M8.0), and the 2004 Kushiro-oki Earthquake (M7.1). To reduce the damage from those earthquakes, it is important to understand the features of their ground motions. Valuable ground motion records which reflect the area's unique characteristics have been obtained, since earthquake observation in Hokkaido began in 1966. And in 1996, many earthquake observation records were archived by the National Research Institute for Earth Science and Disaster Prevention (NIED) earthquake observation network. So, with the goal of creating the best seismic design methods for national highway bridges in Hokkaido, the acceleration response spectra in the seismic designs in these observation records were studied.

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