Influence of chord wall interaction on stress concentrations of square bird-beak SHS X-joints

C. Li, B. Cheng, Q. Qian, Y. Lou, Xiao Lin Zhao

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

Abstract

This research employed an X-shape Square Hollow Section (SHS) joint with typical non-dimensional parameters (i.e., β = 0.6, 2γ = 20, τ = 0.5) to illustrate the influences of chord wall interactions on stress concentrations of square bird-beak welded connections. Refined finite element models considering geometries of welds were constructed, and numerical results show that, for the square bird-beak X-joint under single-side brace axial force, the stresses on the non-brace load side are up to 62% of the values at the corresponding locations on the brace load side and thus cannot be ignored for SCF predictions. The influencing mechanism has been revealed as the interactions between adjacent walls of the chord. A new load case, where both single-side brace axial force and reversed chord in-plane bending were considered, has been introduced as the solution. The proposed superposition approach makes the SCF calculation of square bird-beak X-joints under asymmetrical brace axial forces more accurate and simpler.

Original languageEnglish
Title of host publicationTubular Structures XVI - Proceedings of the 16th International Symposium on Tubular Structures, ISTS 2017
EditorsAmin Heidarpour, Xiao-Ling Zhao
PublisherCRC Press/Balkema
Pages201-206
Number of pages6
ISBN (Print)9780815381341
DOIs
Publication statusPublished - 2018
Externally publishedYes
Event16th International Symposium on Tubular Structures, ISTS 2017 - Melbourne, Australia
Duration: 4 Dec 20176 Dec 2017

Publication series

NameTubular Structures XVI - Proceedings of the 16th International Symposium on Tubular Structures, ISTS 2017

Conference

Conference16th International Symposium on Tubular Structures, ISTS 2017
Country/TerritoryAustralia
CityMelbourne
Period4/12/176/12/17

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

Fingerprint

Dive into the research topics of 'Influence of chord wall interaction on stress concentrations of square bird-beak SHS X-joints'. Together they form a unique fingerprint.

Cite this