Vibration-induced probabilistic fatigue life assessment of a suspension bridge carrying both railway and highway traffic

X. W. Ye, Yiqing Ni

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

In this paper, a fatigue reliability model integrated with stochastic stress concentration factor (SCF) is proposed based on the traditional S-N curve method in combination with the Miner's damage cumulative rule. Firstly, three probabilistic fatigue modelling methods, namely mean stress range method, integration method, and effective stress range method are briefed. Then, the proposed fatigue reliability model is formulated integrating with the probability distribution of hot spot stress range, and it is validated by conducting probabilistic fatigue life assessment of the suspension Tsing Ma Bridge (TMB) with use of the long Herrn strain measurement data from the structural health monitoring (SHM) system permanently installed on the bridge. Finally, the joint probability density function (PDF) of hot spot rainflow stress range as well as the failure probability and reliability index versus fatigue life are obtained.
Original languageEnglish
Title of host publicationAdvances in Environmental Vibration - Proceedings of the 5th International Symposium on Environmental Vibration, ISEV 2011
PublisherScience Press
Pages386-396
Number of pages11
ISBN (Electronic)9787030323736
Publication statusPublished - 1 Jan 2011
Event5th International Symposium on Environmental Vibration, ISEV 2011 - Chengdu, China
Duration: 20 Oct 201122 Oct 2011

Conference

Conference5th International Symposium on Environmental Vibration, ISEV 2011
CountryChina
CityChengdu
Period20/10/1122/10/11

Keywords

  • Fatigue reliability
  • Probability density function
  • Stress concentration factor
  • Structural health monitoring

ASJC Scopus subject areas

  • Mechanics of Materials
  • Visual Arts and Performing Arts
  • Environmental Engineering
  • Management, Monitoring, Policy and Law

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