논문 상세보기
In this study, we develop and propose damping correction factors for the Korean standard design spectra. The newly proposed Korean standard design spectra has been given only for 5% damping ratio. But in practice, engineers need design spectra for damping values other than 5%. To obtain design spectra for various damping values from the standard spectra, damping correction factors are derived. These factors modify the shape of design spectra in accordance with the damping ratio. Response spectra for various damping values are calculated from the earthquake records that had been used to calculate standard design spectra. They consist of 55 records from 18 earthquakes occurred in overseas intraplate regions and Korea. The regressed spectra for the damping values ranging from 0.5% to 50% are compared with standard spectra at three regions acceleration, velocity and displacement sensitive regions. The regression analysis of these data rendered formula for damping correction factors. Finally, a single formula for damping correction factors is recommended that is valid for both horizontal and vertical design spectra and that is applicable to the entire range of periods. One thing to note that recommended damping correction factors is valid for the design spectrum of the rock grounds because the design spectra was developed based on the earthquake records of the rock ground.
2. 감쇠에 따른 설계스펙트럼의 형상에 관한 국내외기준 현황
2.1 국내 기준 현황
2.2 국외 기준 현황
2.3 국내외 기준 현황 분석 결과
3. 지진 목록과 분류
4. 분석 방법과 절차
4.1 감쇠비에 따른 응답스펙트럼 계산
4.2 감쇠비에 따른 설계스펙트럼 계산
4.3 감쇠보정계수 공식 도출
5. 수평스펙트럼 감쇠보정계수
5.1 수평스펙트럼 감쇠보정계수
5.2 수직스펙트럼 감쇠보정계수
6. 수평, 수직 스펙트럼 감쇠보정계수의 비교
7. 단일안 감쇠보정계수
8. 결 론
감사의 글
REFERENCES
