The purpose of this study is to evaluate propriety of impact factor in railway design code about truss bridge with dynamic loading test. This study also analyzes and compares impact factor and railway design code. A impact factor of all members of the truss is lowered by revising railway design code in 2013. The result of this study indicates that a reasonable standard for impact factor is required, because current impact factor which is specified in railway design code could not properly reflect dynamic response of specific type and member.

• 박재욱(한국시설안전공단 교량안전실 직원) | Park, Jae Wook
• 박종현(한국시설안전공단 교량안전실 직원) | Park, Jong Hyun
• 유덕용(한국시설안전공단 교량안전실 처장) | Ryu, Duck Yong
• 이해성(한국시설안전공단 특수교총괄관리센터 센터장) | Lee, Hae Sung