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Fatigue Stress Analysis of Suspension Bridged using FEM

Chan, Tommy H.T., Li, X., & Guo, L. (2002) Fatigue Stress Analysis of Suspension Bridged using FEM. In Chan, S.L., Teng, J.G., & Chung, K.F. (Eds.) 3rd International Conference on Advances in Steel Structures, 9-11 December 2002, Hong Kong.

Abstract

Fatigue is an important fallurc mode for large suspension bridges under traffic loadings. However, large suspension bridges have so many attributes tbat 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 (FEM) is recommended as a rigorous method for steel bridge fatigue analysis. This paper aims at developing a model of a large slispension steel bridge using finite element methods (FEM) for fatigue stress analysis. The Tsing Ma Bridge (TMB) is selected for a case study and the corresponding finite element model is presented. The verification of the model is carried out with the help of the measured bridge modal characteristics and the online dala measured by the structural health moniloring 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. It could be seen that the FE model could be served as a basis for evaluating fatigue damage and the remaining life of the bridge could then be evaluated.

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ID Code: 12829
Item Type: Conference Paper
Additional Information: For more information, please refer to the publisher's website (see hypertext link) or contact the author.
Additional URLs:
Keywords: finite element model, suspension bridge, fatigue damage, dynamic response, stress spectrum, critical location, traffic loading
ISBN: 0080440177
Subjects: Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000)
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
Past > Schools > School of Urban Development
Copyright Owner: Copyright 2002 Elsevier
Deposited On: 05 Mar 2008
Last Modified: 11 Aug 2011 01:35

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