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Finite Element Modelling for Fatigue Stress Analysis of Large Suspension Bridges

Chan, Tommy H.T., Guo, L., & Li, Z.X. (2003) Finite Element Modelling for Fatigue Stress Analysis of Large Suspension Bridges. Journal of Sound and Vibration, 261(3), pp. 443-464.

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Abstract

Fatigue is an important failure mode for large suspension bridges under traffic loadings. However, large suspension bridges have so many attributes that it is difficult to analyze their fatigue damage using experimental measurement methods. Numerical simulation is a feasible method of studying such fatigue damage. In British standards, the finite element method is recommended as a rigorous method for steel bridge fatigue analysis. This paper aims at developing a finite element (FE) model of a large suspension steel bridge for fatigue stress analysis. As a case study, a FE model of the Tsing Ma Bridge is presented. The verification of the model is carried out with the help of the measured bridge modal characteristics and the online data measured by the structural health monitoring system installed on the bridge. The results show that the constructed FE model is efficient for bridge dynamic analysis. Global structural analyses using the developed FE model are presented to determine the components of the nominal stress generated by railway loadings and some typical highway loadings. The critical locations in the bridge main span are also identified with the numerical results of the global FE stress analysis. Local stress analysis of a typical weld connection is carried out to obtain the hot-spot stresses in the region. These results provide a basis for evaluating fatigue damage and predicting the remaining life of the bridge.

Impact and interest:

34 citations in Scopus
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26 citations in Web of Science®

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ID Code: 12789
Item Type: Journal Article
Additional Information: For more information, please refer to the journal's website (see hypertext link) or contact the author.
Keywords: SURFACE, CRACKED PLATES, HEALTH MONITORING DATA, DYNAMIC INTERACTION, LIFE PREDICTION, GROWTH
DOI: 10.1016/S0022-460X(02)01086-6
ISSN: 0022-460X
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Copyright Owner: Copyright 2003 Elsevier
Deposited On: 03 Mar 2008
Last Modified: 29 Feb 2012 23:52

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