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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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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.2
- 발행연도
- 2015.1
- 수록면
- 395 - 408 (14page)
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초록· 키워드
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This study aims to propose a Bayesian approach to consider changes in temperature and vehicle weight as environmental and operational factors for vibration-based long-term bridge health monitoring. The Bayesian approach consists of three steps: step 1 is to identify damage-sensitive features from coefficients of the auto-regressive model utilizing bridge accelerations; step 2 is to perform a regression analysis of the damage-sensitive features to consider environmental and operational changes by means of the Bayesian regression; and step 3 is to make a decision on the bridge health condition based on residuals, differences between the observed and predicted damage-sensitive features, utilizing 95% confidence interval and the Bayesian hypothesis testing. Feasibility of the proposed approach is examined utilizing monitoring data on an in-service bridge recorded over a one-year period. Observations through the study demonstrated that the Bayesian regression considering environmental and operational changes led to more accurate results than that without considering environmental and operational changes. The Bayesian hypothesis testing utilizing data from the healthy bridge, the damage probability of the bridge was judged as no damage.
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참고문헌 (21)
참고문헌 신청
Akaike, H. / 1974 / A new look at the statistical model identification / IEEE T. Autom. Contr 19(6):716~723
Cunha, A. / 2013 / Recent perspectives in dynamic testing and monitoring of bridges / Struct. Control Health Monit 20(6):853~877
Deraemaeker, A. / 2007 / Vibration-based structural health monitoring using output-only measurements under changing environment / Mech. Syst. Signal Pr 22(1):34~56
Dilena, M. / 2011 / Dynamic testing of damaged bridge / Mech. Syst. Signal Pr 25:1485~1507
Doebling, S. W. / 1996 / Damage identification and health monitoring of structural and mechanical systems from changes in their vibration characteristics: A literature review
Cunha, A. / 2013 / Recent perspectives in dynamic testing and monitoring of bridges / Struct. Control Health Monit 20(6):853~877
Deraemaeker, A. / 2007 / Vibration-based structural health monitoring using output-only measurements under changing environment / Mech. Syst. Signal Pr 22(1):34~56
Dilena, M. / 2011 / Dynamic testing of damaged bridge / Mech. Syst. Signal Pr 25:1485~1507
Doebling, S. W. / 1996 / Damage identification and health monitoring of structural and mechanical systems from changes in their vibration characteristics: A literature review
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