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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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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.19 No.1
- 발행연도
- 2017.1
- 수록면
- 39 - 46 (8page)
이용수
초록· 키워드
오류제보하기
Finite element model updating is very effective procedure to determine the uncertainty parameters in structural model and minimize the differences between experimentally and numerically identified dynamic characteristics. This procedure can be practiced with manual and automatic model updating procedures. The manual model updating involves manual changes of geometry and analyses parameters by trial and error, guided by engineering judgement. Besides, the automated updating is performed by constructing a series of loops based on optimization procedures. This paper addresses the ambient vibration based finite element model updating of long span reinforced concrete highway bridges using manual model updating procedure. Birecik Highway Bridge located on the 81stkm of Şanliurfa-Gaziantep state highway over Firat River in Turkey is selected as a case study. The structural carrier system of the bridge consists of two main parts: Arch and Beam Compartments. In this part of the paper, the arch compartment is investigated. Three dimensional finite element model of the arch compartment of the bridge is constructed using SAP2000 software to determine the dynamic characteristics, numerically. Operational Modal Analysis method is used to extract dynamic characteristics using Enhanced Frequency Domain Decomposition method. Numerically and experimentally identified dynamic characteristics are compared with each other and finite element model of the arch compartment of the bridge is updated manually by changing some uncertain parameters such as section properties, damages, boundary conditions and material properties to reduce the difference between the results. It is demonstrated that the ambient vibration measurements are enough to identify the most significant modes of long span highway bridges. Maximum differences between the natural frequencies are reduced averagely from %49.1 to %0.6 by model updating. Also, a good harmony is found between mode shapes after finite element model updating.
목차
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참고문헌 (23)
참고문헌 신청
Altunışık, A. C. / 2011 / Ambient vibration based seismic evaluation of isolated Gülburnu highway bridge / Soil Dyn. Earthq. Eng. 31(11):1496~1510
Bayraktar, A. / 2009 / Vibration characteristics of kömürhan highway bridge constructed with balanced cantilever method / J. Perform. Constr. Fac 23(2):90~99
Bendat, J. S. / 2004 / Random data: Analysis and measurement procedures / John Wiley and Sons Inc.
Brownjohn, J. M. W. / 2010 / Ambient vibration re-testing and operational modal analysis of the Humber Bridge / Eng. Struct 32(8):2003~2018
Dubbs, N. C. / 2016 / Assessment of long-span bridge performance issues through an iterative approach to ambient vibration-based structural identification / J. Perform. Constr. Fac 30(5):29~42
Bayraktar, A. / 2009 / Vibration characteristics of kömürhan highway bridge constructed with balanced cantilever method / J. Perform. Constr. Fac 23(2):90~99
Bendat, J. S. / 2004 / Random data: Analysis and measurement procedures / John Wiley and Sons Inc.
Brownjohn, J. M. W. / 2010 / Ambient vibration re-testing and operational modal analysis of the Humber Bridge / Eng. Struct 32(8):2003~2018
Dubbs, N. C. / 2016 / Assessment of long-span bridge performance issues through an iterative approach to ambient vibration-based structural identification / J. Perform. Constr. Fac 30(5):29~42
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