NDLI: Damage alarming of long-span suspension bridge based on GPS-RTK monitoring

Content Provider	Springer Nature Link
Author	Miao, Chang qing Wang, Man Tian, Hong jin Feng, Zhao xiang Chen, Ce
Copyright Year	2015
Abstract	Structure damage identification and alarming of long-span bridge were conducted with three-dimensional dynamic displacement data collected by GPS subsystem of health monitoring system on Runyang Suspension Bridge. First, the effects of temperature on the main girder spatial position coordinates were analyzed from the transverse, longitudinal and vertical directions of bridge, and the correlation regression models were built between temperature and the position coordinates of main girder in the longitudinal and vertical directions; then the alarming indices of coordinate residuals were conducted, and the mean-value control chart was applied to making statistical pattern identification for abnormal changes of girder dynamic coordinates; and finally, the structural damage alarming method of main girder was established. Analysis results show that temperature has remarkable correlation with position coordinates in the longitudinal and vertical directions of bridge, and has weak correlation with the transverse coordinates. The 3% abnormal change of the longitudinal coordinates and 5% abnormal change of the vertical ones caused by structural damage are respectively identified by the mean-value control chart method based on GPS dynamic monitoring data and hence the structural abnormalities state identification and damage alarming for main girder of long-span suspension bridge can be realized in multiple directions.
Starting Page	2800
Ending Page	2808
Page Count	9
File Format	PDF
ISSN	20952899
Journal	Journal of Central South University of Technology
Volume Number	22
Issue Number	7
e-ISSN	22275223
Language	English
Publisher	Central South University
Publisher Date	2015-07-14
Publisher Place	Changsha
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	long-span suspension bridge damage alarming mean-value control chart GPS displacement temperature correlation Engineering Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys Engineering

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