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Hot spot stress approach for Tsing Ma bridge fatigue evaluation under traffic using finite element method

Chan, Tommy H.T., Zhou, Taiquan , Li, Z.X. , & Guo, L. (2005) Hot spot stress approach for Tsing Ma bridge fatigue evaluation under traffic using finite element method. Structural Engineering and Mechanics, 19(3), pp. 261-279.

Abstract

The hot spot stress approach is usually adopted in the fatigue design and analysis of tubular welded joints. To apply the hot spot stress approach for fatigue evaluation of long span suspension bridges, the FEM is used to determine the hot spot stress of critical fatigue location. Using the local finite element models of the Tsing Ma Bridge, typical joints are developed and the stress concentration factors are determined. As a case for study, the calculated stress concentration factor is combined with the nominal representative stress block cycle to obtain the representative hot spot stress range cycle block under traffic loading from online health monitoring system. A comparison is made between the nominal stress approach and the hot spot stress approach for fatigue life evaluation of the Tsing Ma Bridge. The comparison result shows that the nominal stress approach cannot consider the most critical stress of the fatigue damage location and the hot spot stress approach is more appropriate for fatigue evaluation.

Impact and interest:

17 citations in Scopus
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ID Code: 12741
Item Type: Journal Article
Additional Information: For more information, please refer to the journal's website (see hypertext link) or contact the author.
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Keywords: Key words, long suspension bridge, fatigue life evaluation, hot spot stress, finite element method
ISSN: 1225-4568
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)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Mechanical Engineering not elsewhere classified (091399)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Urban Development
Copyright Owner: Copyright 2005 Techno-Press Ltd
Deposited On: 29 Feb 2008
Last Modified: 29 Feb 2012 23:53

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