Because of the characteristics of long-span bridges, the cable tension is considered a critical item in their maintenance. In particular, because the evaluation of the cable tension in a suspension bridge is essential for understanding the general status of the structural system, identifying the initial values of this force in the construction of a bridge and then accurately predicting and comparing its estimated values during traffic use are very important tasks for the maintenance of a suspension bridge. In this paper, to verify the algorithm for estimating the cable tension of hanger cables using the back analysis technique, an ambient vibration test was conducted at a suspension bridge.

Abstract
 1. 서 론
 2. 역해석 기법을 이용한 행어 케이블 장력 측정
 3. 결 론
 참고문헌

• 김성완(부산대학교 지진방재연구센터) | Kim, Sung Wan 교신저자
• 윤다운(부산대학교 지진방재연구센터) | Yun, Da Woon
• 박재봉(한국시설안전공단 안전연구소) | Park, Jae Bong
• 나성옥(한국시설안전공단 진단평가본부) | Na, Sung Ok