한반도 지진원의 특성을 고려한 응답스펙트럼 = Response Spectrum for Korean Peninsula Considering Characteristic of The Seismic Source

다국어 초록 (Multilingual Abstract)

The response spectrum is the best representation of earthquake for engineering purposes because it takes account of the natural frequencies of structures. In general PGA(Peak Ground Acceleration) is used to scale the standard response spectrum. But it is likely to lead to serious error, because the shapes of response spectra depend on magnitude, source distance and site conditions. Therefore, theoretical prediction called stochastic source models have been used for predicting ground motion and response spectrum by magnitude and distance in regions where strong ground motion data are sparse.
The deterministic method that PGA scales the design spectrum is prescribed in Korea, so unexpected error can be occured. Therefore the stochastic simulation method is employed to predict ground motion and to estimate the response spectrum for comparison with the design spectrum in this study. Stochastic source model that the shape is controlled by two corner frequency is computed and verified by comparing with Gyeongju earthquake using site-amplification(Boor & Joyner, 1997) to consider site condition. And it is proved how much this difference has an effect on response of structure such as steel box girder bridge.