Recently, to assessing the deflection of structural member, video gauge was widely used in the field of structural maintenance. This paper is dealt with the laboratory experience on the video gauge for detecting the structural deflection from the digital Image. In this paper, real deflection from LVDT detected from model bridge in laboratory was compared with the measurement of the Video Gauge. The accuracy of the deflection measurement using the Video Gauge in the load of the bridge was verified.

• 허춘근(한국시설안전공단 시설안전본부, 해외사업추진단, 차장) | Hur, Choon-kun
• 이흥수(한국시설안전공단 시설안전본부, 일반도로실, 공학박사) | Lee, Heung-soo
• 배정주(한국시설안전공단 시설안전본부, 해외사업추진단, 처장) | Bae, Jung-ju
• 한자중(한국시설안전공단 시설안전본부, 일반도로실, 실장) | Han, Ja-jung
• 오홍섭(경남과학기술대학교 토목공학과 교수, 공학박사) | Oh, Hongseob 교신저자