In this study earthquake records were collected for rock conditions that do not reflect seismic amplification by soil from global earthquake databases such as PEER, USGS, and ESMD. The collected earthquake records were classified and analyzed based on the magnitude and distance of earthquakes. Based on the analyzed earthquakes, the design response spectrum shape, effective ground acceleration, and amplification ratios for each period band are presented. In addition, based on the analyzed data, the story shear force for 5F, 10F, 15F, and 20F were derived through an analysis of the elastic time history for multi-DOF structures. The results from analyzing the rock earthquake record show that the seismic load tends to be amplified greatly in the short period region, which is similar to results observed from the Gyeongju and Pohang earthquakes. In addition, the results of the multi-DOF structure analysis show that existing seismic design criteria can be underestimated and designed in the high-order mode of short- and medium-long cycle structures.

A B S T R A C T
1. 서 론
2. 경주지진과 포항지진의 특성
3. 국내 건축구조기준 및 EUROCODE 기준
4. 지진기록의 수집 및 통계
    4.1 지진기록의 수집
    4.2 지진기록의 통계
5. 규모와 거리에 따른 스펙트럼 형상 도출
    5.1 규모와 거리에 따른 변수
    5.2 스펙트럼 작성
6. 다자유도 구조물에 대한 영향
    6.1 해석모델
    6.2 입력 지진파
    6.3 탄성시간이력해석 결과
7. 결 론
REFERENCES

• 김진우(청주대학교 건축공학과) | Kim Jin Woo (Department of Architecture Engineering, Cheongju University) Corresponding author
• 김동관(청주대학교 건축공학과) | Kim Dong Kwan (Department of Architecture Engineering, Cheongju University)
• 김호수(청주대학교 건축공학과) | Kim Ho Soo (Department of Architecture Engineering, Cheongju University)