Fatigue strength of high strength steel butt-welded connections

L. W. Tong, L. C. Niu, K. Si, L. W. Ai, M. L. Liu, Xiao Lin Zhao

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

1 Citation (Scopus)

Abstract

High-cycle fatigue performance of the butt-welded connections for high strength steels HSS (Q460, Q690 and Q960) were studied in this paper. Based on the experimental results and fracture surface comparison, the S-N curves were obtained through regression analysis of fatigue test data, which are used to evaluate the fatigue strength of HSS butt-welded connections, and compared with the current design code. The characteristics of fatigue fracture were also observed and compared in detail. The results show the fatigue strength of Q690 and Q960 are 21.4%, 9.8% higher than the design value in Eurocode 3 (EC3). EC3 curves was relatively conservative to evaluate the fatigue performance of HSS Q690 and Q960 butt-welded connections. While the fatigue strength of Q460 butt-welded connections was conformed to the design value of EC3 S-N curves (3.6% slightly lower).

Original languageEnglish
Title of host publicationAdvances in Engineering Materials, Structures and Systems
Subtitle of host publicationInnovations, Mechanics and Applications - Proceedings of the 7th International Conference on Structural Engineering, Mechanics and Computation, 2019
EditorsAlphose Zingoni
PublisherCRC Press/Balkema
Pages1295-1299
Number of pages5
ISBN (Print)9781138386969
DOIs
Publication statusPublished - 2019
Externally publishedYes
Event7th International Conference on Structural Engineering, Mechanics and Computation, 2019 - Cape Town, South Africa
Duration: 2 Sept 20194 Sept 2019

Publication series

NameAdvances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications - Proceedings of the 7th International Conference on Structural Engineering, Mechanics and Computation, 2019

Conference

Conference7th International Conference on Structural Engineering, Mechanics and Computation, 2019
Country/TerritorySouth Africa
CityCape Town
Period2/09/194/09/19

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Computational Mechanics

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