To monitor dynamic responses of bridges, the vision-based system using commercial video-related equipment is developed. The research and development has been performed for dynamic characteristics extraction of external tendons in PSC box girder bridges. The vision-based dynamic measurement system consists of an industrial camera and notebook computer that can measure tendon's vibrations with 100 fps. The vision-based system was successfully tested and verified in the testbed bridge.

• 박종칠(한국도로공사 도로교통연구원, 공학박사) | Park, Jong-Chil 교신저자
• 조준상(한국도로공사 도로교통연구원, 공학박사) | Cho, Jun-Sang
• 길흥배(한국도로공사 도로교통연구원, 공학박사) | Gil, Heung-Bae
• 신재인(한국도로공사 서해대교관리소, 공학박사) | Shin, Jae-In