NDLI: Fatigue stress monitoring and analyses for steel box girder of Runyang Suspension Bridge

Content Provider	Springer Nature Link
Author	Wang, Ying Li, Zhaoxia Wu, Baijian
Copyright Year	2008
Abstract	The monitoring of fatigue stress of steel bridge is a key issue of bridge health monitoring and safety assessment. This paper aims to find out the strain history features of the girder components of Runyang Suspension Bridge (RYSB) under vehicle and environmental loading during its first year of service based on the strain-history data recorded by structural health monitoring system installed in the bridge. The fatigue stress spectrums of steel box girders under normal traffic load, heavy trucks and typhoon loads were studied as well as the correlation between varying strain and temperature based on real-time monitoring of temperature histories. The results show that, monitoring on local strain in health monitoring systems of RYSB can effectively provide the information on fatigue stresses. The range of the equivalent fatigue stress on the monitoring location of the bridge is currently low, mainly due to varying traffic loading and temperature. There exists significant correlation between varying temperature and mean value of fatigue stress. Effect of the passing of heavy trucks on bridge fatigue is quite significant since the value of the cumulative fatigue damage generated by heavy trucks is 10 to 100 times larger than that by normal traffic. Therefore, the effect on fatigue cumulative damage due to heavy trucks or overloaded vehicles needs to be monitored and paid much attention to.
Starting Page	197
Ending Page	204
Page Count	8
File Format	PDF
ISSN	16737407
Journal	Frontiers of Architecture and Civil Engineering in China
Volume Number	2
Issue Number	3
e-ISSN	16737512
Language	English
Publisher	SP Higher Education Press
Publisher Date	2008-07-31
Publisher Institution	Chinese Universities
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	steel box girder health monitoring fatigue assessment strain-time history temperature varying Cities, Countries, Regions Civil Engineering
Content Type	Text
Resource Type	Article
Subject	Architecture Civil and Structural Engineering

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