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Fatigue damage reliability analysis for Nanjing Yangtze river bridge using structural health monitoring data

  • He Xu-hui Email author
  • Chen Zheng-qing 
  • Yu Zhi-wu 
  • Huang Fang-lin 
Article

Abstract

To evaluate the fatigue damage reliability of critical members of the Nanjing Yangtze river bridge, according to the stress-number curve and Miner’s rule, the corresponding expressions for calculating the structural fatigue damage reliability were derived. Fatigue damage reliability analysis of some critical members of the Nanjing Yangtze river bridge was carried out by using the strain-time histories measured by the structural health monitoring system of the bridge. The corresponding stress spectra were obtained by the real-time rain-flow counting method. Results of fatigue damage were calculated respectively by the reliability method at different reliability and compared with Miner’s rule. The results show that the fatigue damage of critical members of the Nanjing Yangtze river bridge is very small due to its low live-load stress level.

Key words

fatigue damage reliability evaluation railway steel bridge structural health monitoring real-time rain-flow counting method 

CLC number

TU391 TU997 

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Copyright information

© Central South University 2006

Authors and Affiliations

  • He Xu-hui 
    • 1
    Email author
  • Chen Zheng-qing 
    • 2
  • Yu Zhi-wu 
    • 1
  • Huang Fang-lin 
    • 1
  1. 1.School of Civil and Architectural EngineeringCentral South UniversityChangshaChina
  2. 2.School of Civil EngineeringHunan UniversityChangshaChina

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