High speed railway bridges should be strictly maintained due to its social importance. However, There are many problems to execute loading test for precision safety diagnosis. A numerical experiment with a numerical model which is updated for reflecting characteristics of an existing bridge can be useful for high speed railway bridge maintenance. Moreover, more efficient maintenance can be possible if only ambient vibration is needed for numerical model updating process. In this study, a numerical model updating process is introduced in which only ambient vibration is enough to execute the process. Also, the usability of updated numerical model is verified by comparing measured and analyzed acceleration.

• 박동욱(부산대학교 지진방재연구센터 연구교수, 공학박사) | Park, Dong Uk 교신저자
• 김남식(부산대학교 건설융합학부 교수, 공학박사) | Kim, Nam Sik
• 정치영(부산대학교 지진방재연구센터 연구교수, 공학박사) | Jung, Chi Young