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RISS 인기검색어
- 검색키워드
- 저자 : 최일윤(ll-Yoon Choi) (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
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이준석(Jun S. Lee),최일윤(ll-Yoon Choi),이현석(Hyun Suk. Lee),고동춘(Dong Choon. Ko) 한국철도학회 2003 철도저널 Vol.6 No.4
A health monitoring system becomes a very useful tool to obtain information on long term behavior of the important railway structures such as very long span and special type bridges. It can be also used to give a warning signal to the maintenance engineer when the structure shows abnormal behavior. However, due to long term use and temperature changes, the health monitoring system needs to be calibrated periodically. In this study, calibration and gauge factor readjustment process made for the health monitoring system installed in the railroad bridges and tunnel are reviewed and a few findings are updated. Future work will be concentrated on the long-term analysis of the measurement data and on the database structures so that the assessment of the structure is possible
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철도교 상시계측시스템의 교정 및 교정상수 설정에 관한 연구
박준오(Joon-Oh Park),이준석(Jun S. Lee),최일윤(ll-Yoon Choi),민경주(Kyung-Ju Min) 한국철도학회 2002 철도저널 Vol.5 No.3
A health monitoring system becomes a useful tool to obtain information on long term behavior of the important railway structures such as very long span and special type bridges. The health monitoring system not only gives the direct measurement data of the railway bridges but also provides the basic data on the maintenance of the structures. Therefore, periodic calibrations of the health monitoring system will be a necessary step toward precise and accurate assessment of the railway bridges. In this study, the calibration and gauge factor readjustment process made for the health monitoring system installed in the railroad bridges is reviewed and some findings are explained in detail: specifically, the calibrators made for this purpose are illustrated and the regression processes of the calibration on long-term displacement using water level sensor, longitudinal displacement using LVDT sensor, instantaneous displacement using LVDT sensors and accelerometer are described in full length. Based on the regression results, it was found that the gauge factors need to be readjusted according to the regression equation but, since the deviation or shift is not serious so far, long-term observation on each sensor is also recommended. Future work will be concentrated on the long-term analysis of each sensor and on the database creation so that the assessment of the structures is possible
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