Damage evaluation of railway bridge is presented. Changes of dynamic properties between damaged case and repaired case using free vibration responses are evaluated. Power Spectrum and Cross Power Spectrum of Fourier Transform for vibration responses are used to evaluate the dynamic properties of the bridge to check out the difference before and after the reinforcement.

• 김진영(한국생산기술연구원 연구원) | Kim, Jin Young
• 김민욱(전주대학교 공학기술종합연구소 특별연구원) | Kim, Min Ook
• 이명규(전주대학교 토목환경공학과 교수) | Lee, Myung-Kue