Concurrent multi-scale fatigue damage evolution simulation method for long-span steel bridges

Bin Sun, You Lin Xu, Qing Zhu, Zhaoxia Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

12 Citations (Scopus)

Abstract

Fatigue damage is one of the leading causes for structural failure of long-span steel bridges, but fatigue damage evolution of a long-span steel bridge is very complex. This study proposes a concurrent multi-scale fatigue damage evolution simulation method for long-span steel bridges from micro short crack nucleation and growth to macro structural component damage until mega structural failure. As a case study, the fatigue damage evolution of the Stonecutters Bridge in Hong Kong under cyclic vehicle loading is finally simulated using the proposed method. It shows that the proposed method is computationally feasible even for such a large scale structure. The method can provide a clear picture how micro short cracks grow into macro fatigue damage of structural components and eventually lead to mega structural failure.

Original languageEnglish
Pages (from-to)165-182
Number of pages18
JournalInternational Journal of Damage Mechanics
Volume28
Issue number2
DOIs
Publication statusPublished - 1 Feb 2019

Keywords

  • Fatigue damage evolution
  • fatigue failure
  • multi-scale modeling
  • short cracks
  • Stonecutters Bridge

ASJC Scopus subject areas

  • Computational Mechanics
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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