To ensure the safety and functionality of a railroad bridge, maintaining the integrity of the bridge via continuous structural health monitoring is important. However, most structural integrity monitoring methods proposed to date are based on modal responses which require the extracting process and have limited availability. In this paper, the applicability of the existing damage identification method based on free-vibration reponses to time-domain deflection shapes due to moving train load is investigated. Since the proposed method directly utilizes the time-domain responses of the structure due to the moving vehicles, the extracting process for modal responses can be avoided, and the applicability of structural health evaluation can be enhanced. The feasibility of the presented method is verified via a numerical example of a simple plate girder bridge.

Abstract
 Ⅰ. 서론
 2. 본 론
  2.1 제연설비의 화재안전기준 요소의 성능분석
  2.2 공조겸용 제연설비 풍도의 재질 성능 분석
 3. 결 론(제 언)
 References

• 박찬석(우송정보대학 소방안전관리과) | Park Chan-Seok (Department of Fire Safety Management, Woosong college) Corresponding Author