Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/14024
Title: Statistical analysis of stress spectra for fatigue life assessment of steel bridges with structural health monitoring data
Authors: Ye, XW
Ni, YQ 
Wong, KY
Ko, JM
Keywords: Fatigue life assessment
Steel bridge
Stress spectrum
Structural health monitoring
Typhoon effect
Issue Date: 2012
Publisher: Pergamon Press
Source: Engineering structures, 2012, v. 45, p. 166-176 How to cite?
Journal: Engineering structures 
Abstract: This paper aims at developing a monitoring-based method for fatigue life assessment of steel bridges with use of long-term monitoring data of dynamic strain. A standard daily stress spectrum is derived by statistically analyzing the stress spectra accounting for highway traffic, railway traffic, and typhoon effects. The optimal number of daily strain data for derivation of the standard daily stress spectrum is determined by examining the predominant factors which affect the prediction of fatigue life. With the continuously measured dynamic strain responses from the instrumented Tsing Ma Bridge carrying both highway and railway traffic, the proposed method is exemplified to evaluate the fatigue life of fatigue-critical welded details on the bridge.
URI: http://hdl.handle.net/10397/14024
ISSN: 0141-0296
EISSN: 1873-7323
DOI: 10.1016/j.engstruct.2012.06.016
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