This study evaluates safety assessment before and after repair of Seonamsa temple seungseon bridge, which refer to the representative Hongye bridge in Korea. In this approach natural frequency of the structure were considered in the modeling procedure. Trial & error method is applied to obtain the approximate natural frequency before and after retrofit construction. Stiffness of the actual structure was examined to account for the dynamic characteristics of Hongye bridge measured in the field and adjusting parameters in computer modeling. The safety and usability of the stone structure in terms of load bearing capacity and displacement were examined.

Abstract
1. 서론
    1.1 연구의 배경 및 목적
    1.2 연구 방법 및 절차
2. 고유진동수 측정
    2.1 진동 측정 장비 및 진동 측정 방법
    2.2 데이터 해석 결과
    2.3 국내 다른 홍예교와 비교
3. 컴퓨터 모델링
    3.1 모델링 개요 및 이상화
    3.2 재료의 물성
    3.3 모델링 고유진동수 비교
    3.4 하중재하
4. 결론
References

• 이가윤(세종대학교 건축공학과) | Lee Ga-Yoon (Dept. of Architecture, Sejong University)
• 이성민((재)한국건설품질연구원) | Lee Sung-Min (Korea Construction Quality Research Center(KCQR))
• 이기학(세종대학교 건축공학과) | Lee Kihak (Dept. of Architecture, Sejong University) 교신저자