지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Smart Structures and Systems, An International Journal Smart Structures and Systems, An International Journal Vol.15 No.3
- 발행연도
- 2015.1
- 수록면
- 683 - 698 (16page)
이용수
초록· 키워드
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Railroad bridges form an integral part of railway infrastructure throughout the world. Toaccommodate increased axel loads, train speeds, and greater volumes of freight traffic, in the presence ofchanging structural conditions, the load carrying capacity and serviceability of existing bridges must beassessed. One way is through system identification of in-service railroad bridges. To dates, numerousresearchers have reported system identification studies with a large portion of their applications beinghighway bridges. Moreover, most of those models are calibrated at global level, while only a few studiesapplications have used globally and locally calibrated model. To reach the global and local calibration, bothambient vibration tests and controlled tests need to be performed. Thus, an approach for systemidentification of a railroad bridge that can be used to assess the bridge in global and local sense is needed.
This study presents system identification of a railroad bridge using free vibration data. Wireless smartsensors are employed and provided a portable way to collect data that is then used to determine bridgefrequencies and mode shapes. Subsequently, a calibrated finite element model of the bridge provides globaland local information of the bridge. The ability of the model to simulate local responses is validated bycomparing predicted and measured strain in one of the diagonal members of the truss. This researchdemonstrates the potential of using measured field data to perform model calibration in a simple andpractical manner that will lead to better understanding the state of railroad bridges.
목차
등록된 정보가 없습니다.
참고문헌 (31)
참고문헌 신청
Association of American Railroads / 2012 / An Overview of America’s Freight RailroadsExternal Link
Ahmadi, H.R. / 2012 / A harmonic vibration, output only and time-frequency representation based method for damage detection in Concrete piers of complex bridges / Int. J. Civil Struct. Eng 2(3):987~1002
Brenner, B. / 2010 / Structural modeling, instrumentation, and load testing of the Tobin Memorial Bridge in Boston, Massachusetts / Proceedings of the 2010 Structures Congress, Orando, Florida
Brincker, R. / 2001 / Modal identification of output-only systems using frequency domain decomposition / Smart Mater. Struct 10(3):441~445
Brownjohn, J. / 2003 / Ambient vibration studies for system identification of tall buildings / Earthq. Eng. Struct. D 32(1):71~95
Ahmadi, H.R. / 2012 / A harmonic vibration, output only and time-frequency representation based method for damage detection in Concrete piers of complex bridges / Int. J. Civil Struct. Eng 2(3):987~1002
Brenner, B. / 2010 / Structural modeling, instrumentation, and load testing of the Tobin Memorial Bridge in Boston, Massachusetts / Proceedings of the 2010 Structures Congress, Orando, Florida
Brincker, R. / 2001 / Modal identification of output-only systems using frequency domain decomposition / Smart Mater. Struct 10(3):441~445
Brownjohn, J. / 2003 / Ambient vibration studies for system identification of tall buildings / Earthq. Eng. Struct. D 32(1):71~95
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