TY - GEN
T1 - Bridge health index considering deterioration mechanisms based on statistical analysis of visual inspection data
AU - Otake, Yu
AU - Honjo, Yusuke
AU - Takashi, Sasuga
AU - Atsushi, Sato
N1 - Publisher Copyright:
© 2015 Taylor & Francis Group, London.
PY - 2015
Y1 - 2015
N2 - This paper presents the results of an evaluation of the bridge health index for 1325 bridges managed by the Gifu Prefectural authorities. The proposed bridge health index is statistically calculated using data from periodic inspections conducted by the authorities between 2001 and 2010. The database contains the results of five-step discrete data on many items set for decks, girders, expansions, shoes and accessories. The five-step grading is based on visual observation of the degree of deterioration for various members and components. However, due to the excessive amount of inspection items and components in bridges, the summarized grade obtained in this inspection is insufficient for making an effective repair and maintenance plan. Accordingly, indices that enable an overall evaluation of each bridge (or main components such as RC deck) are required. This study aims to express health indices for the RC decks of steel bridges and the PC girders of concrete bridges using an overall indices based on principal component analysis, which can clarify identify the health condition of the bridges with deterioration mechanism. Furthermore, the possibility of uniformly evaluation with RC decks and PC girders was considered.
AB - This paper presents the results of an evaluation of the bridge health index for 1325 bridges managed by the Gifu Prefectural authorities. The proposed bridge health index is statistically calculated using data from periodic inspections conducted by the authorities between 2001 and 2010. The database contains the results of five-step discrete data on many items set for decks, girders, expansions, shoes and accessories. The five-step grading is based on visual observation of the degree of deterioration for various members and components. However, due to the excessive amount of inspection items and components in bridges, the summarized grade obtained in this inspection is insufficient for making an effective repair and maintenance plan. Accordingly, indices that enable an overall evaluation of each bridge (or main components such as RC deck) are required. This study aims to express health indices for the RC decks of steel bridges and the PC girders of concrete bridges using an overall indices based on principal component analysis, which can clarify identify the health condition of the bridges with deterioration mechanism. Furthermore, the possibility of uniformly evaluation with RC decks and PC girders was considered.
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M3 - Conference contribution
AN - SCOPUS:84941242691
SN - 9781138001206
T3 - Life-Cycle of Structural Systems: Design, Assessment, Maintenance and Management - Proceedings of the 4th International Symposium on Life-Cycle Civil Engineering, IALCCE 2014
SP - 1973
EP - 1980
BT - Life-Cycle of Structural Systems
A2 - Akiyama, Mitsuyoshi
A2 - Furuta, Hitoshi
A2 - Frangopol, Dan M.
PB - CRC Press/Balkema
T2 - 4th International Symposium on Life-Cycle Civil Engineering, IALCCE 2014
Y2 - 16 November 2014 through 19 November 2014
ER -