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Reliability Assessment for PSC Box-Girder Bridges Based on SHM Strain Measurements
Joint Authors
Wang, Zonglin
Wang, Yin-hui
Chen, Chuang
Wang, Tao
Luo, Zheng
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-07-10
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
A reliability assessment method for prestressed concrete (PSC) continuous box-girder bridges based on structural health monitoring (SHM) strain measurements was proposed.
First, due to the fact that measured strain was compositive and the variation periods of its components were different, a series of limit state equations under normal use limit state were given.
Then, a linear fitting method was used to determine the relationship between the ambient temperature and the measured strain, which was aimed at extracting the vehicle load effect and the temperature load effect from the measured strain.
Finally, according to the equivalent normalization method, the load effects unsatisfying the normal distribution by probability density function fitting were transformed, and the daily failure probabilities of monitored positions were calculated for evaluating the safety state of the girder.
The results show that (1) the top plate of the box girder is more sensitive than the bottom plate to the high temperature, (2) the daily and seasonal strain variations induced by uniform temperature reveal an inconsistent tendency to the seasonal variation for mid-span cross sections, and (3) the generalized extreme value distribution is recommended for temperature gradient stress and vehicle induced stress fitting for box-girder bridges.
American Psychological Association (APA)
Chen, Chuang& Wang, Zonglin& Wang, Yin-hui& Wang, Tao& Luo, Zheng. 2017. Reliability Assessment for PSC Box-Girder Bridges Based on SHM Strain Measurements. Journal of Sensors،Vol. 2017, no. 2017, pp.1-13.
https://search.emarefa.net/detail/BIM-1187556
Modern Language Association (MLA)
Chen, Chuang…[et al.]. Reliability Assessment for PSC Box-Girder Bridges Based on SHM Strain Measurements. Journal of Sensors No. 2017 (2017), pp.1-13.
https://search.emarefa.net/detail/BIM-1187556
American Medical Association (AMA)
Chen, Chuang& Wang, Zonglin& Wang, Yin-hui& Wang, Tao& Luo, Zheng. Reliability Assessment for PSC Box-Girder Bridges Based on SHM Strain Measurements. Journal of Sensors. 2017. Vol. 2017, no. 2017, pp.1-13.
https://search.emarefa.net/detail/BIM-1187556
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1187556