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J. Korean Soc. Hazard Mitig. > Volume 18(7); 2018 > Article
Journal of the Korean Society of Hazard Mitigation 2018;18(7):377-386.
DOI: https://doi.org/10.9798/KOSHAM.2018.18.7.377    Published online December 31, 2018.
장기계측자료 분석을 통한 케이블지지교량 주요 구조부재에 설치된 지진가속도계측기 재난관리 기준 제안
이승한1, 이덕근2, 박성우3, 박광연4
1정회원, 한국시설안전공단 국가내진센터 과장
2한국시설안전공단 특수교관리센터 부장
3한국시설안전공단 특수교관리센터 부장
4정회원, 동아대학교 산학협력단 연구지원실 연구교수
Proposal of Disaster Management Criteria of Seismic Accelerometers Installed on the Primary Structural Elements of Cable-Supported Bridges Based on Long-Term Data
Seung Han Lee1, Deok Keun Deok Keun2, Sung Woo Park3, Kwang-yeun Park4
1Member, Manager, National Center for Seismic Safety, Korea Infrastructure Safety and Technology Corporation
2General Manager, Long Span Bridge Center, Korea Infrastructure Safety and Technology Corporation
3General Manager, Long Span Bridge Center, Korea Infrastructure Safety and Technology Corporation
4Member, Research Professor, Research Foundation for Industry-Academy Cooperation, Dong-a university
Corresponding author:  Kwang-yeun Park, Tel: +82-51-200-6501, Fax: +82-51-200-6507, 
Email: kwangyeun.park@gmail.com
Received: 12 October 2018   • Revised: 18 October 2018   • Accepted: 31 October 2018
This study presents a proposal of disaster management criteria of seismic accelerometers installed on primary structural elements of cable-supported bridges. Extreme value distributions of accelerations are estimated with respect to 1 month of a reference time period based on a statistical estimation method that uses the long-term records of acceleration measured at the target cable-supported bridges. Extreme value distributions of the acceleration with respect to reference time periods of 100 years and 1000 years are extrapolated by applying extreme value theory, and the disaster management criteria are proposed based on the mean values of the estimated extreme value distributions of the acceleration. The validity of the proposed disaster management criteria is verified through comparison with the peak values of recorded accelerations during the Gyeongju and Pohang earthquakes.
Key Words: Cable-supported Bridge, Seismic Accelerometers, Disaster Management Criteria, Extreme Value Distributions
이 연구에서는 케이블지지교량의 주요 구조부재에 설치된 지진가속도계측기에서 측정된 가속도에 대한 재난관리 기준을 제안한다. 국내 공용 중인 케이블지지교량에서 장기간 계측된 가속도 기록을 활용하여 통계적 추정기법 적용을 통해 가속도의 1개월 최대치분포를 추정한다. 극치이론의 적용을 통해 가속도의 100년 및 1000년에 대한 최대치분포를 외삽을 통해 추정하고, 추정된 100년 및 1000년 최대치분포의 평균값에 근거하여 관심 및 주의단계에 대한 지진가속도계측기의 관리 기준을 제안한다. 경주지진과 포항지진 발생 시 기록된 최대 가속도와의 비교를 통해 제안된 관리 기준의 실효성을 검증한다.
핵심용어: 케이블지지교량, 지진가속도계측기, 재난관리 기준, 극치분포
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