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Fatigue Evaluation for Tsing Ma Bridge using Structural Health Monitoring Data

Chan, Tommy H.T., Ko, Jan Ming , & Li, Z.X. (2001) Fatigue Evaluation for Tsing Ma Bridge using Structural Health Monitoring Data. In Health Monitoring and Management of Civil Infrastructure Systems, 4-March 2001, Newport Beach.

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Abstract

Fatigue assessment for the Tsing Ma Bridge (TMB) are presented based on the British standard BS5400 and the real-time structural health monitoring data under railway loading. TMB, as an essential portion of transport network for the Hong Kong airport, is the longest suspension bridge in the world carrying both highway and railway traffic. The bridge design has been mainly based on BS5400. A structural health monitoring system – Wind and Structural Health Monitoring System (WASHMS) for TMB has been operated since the bridge commissioning in May 1997. In order to assess the fatigue behavior of TMB under railway loading, strain gauges were installed on the bridge deck to measure the strain-time histories as soon as the bridge is loaded by a standard railway loading due to the service of an actual train. The strain-time history data at the critical members are then used to determine the stress spectrum, of which the rainflow method recommended for railway bridges by BS5400 is applied to count cycles of stress range. Miner's law is employed to evaluate fatigue damage and remaining service life of the bridge. The evaluated results of fatigue damage and remaining service life would help us to well understand about the fatigue design of the bridge and status in fatigue accumulation.

Impact and interest:

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ID Code: 12859
Item Type: Conference Paper
Additional Information: For more information, please refer to the publisher's website (see hypertext link) or contact the author.
Keywords: Structural health monitoring, fatigue assessment, life prediction, bridge, deck section, continuous damage mechanics, effective stress range, strain, time history
DOI: 10.1117/12.435609
ISSN: 0277-786X
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 2001 International Society for Optical Engineering (SPIE)
Deposited On: 04 Mar 2008
Last Modified: 11 Aug 2011 01:36

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