Experimental study on column buckling of 420 MPa high strength steel welded circular tubes

Gang Shi, Xue Jiang, Wenjing Zhou, Tak Ming Chan, Yong Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

31 Citations (Scopus)

Abstract

This paper investigates the column buckling performance of welded circular tubes made of 420 MPa high strength steel (HSS). 24 axial compression column tests on specimens with a nominal diameter of 273 mm and thickness of 6 mm were conducted. Initial geometric imperfections including out-of-straightness and loading eccentricity were measured. Experimental results in terms of buckling modes and load-carrying capacities are presented and discussed in detail. Non-linear finite element (FE) models were developed which captured the experimental observations satisfactorily. Based on the validated FE models, further parametric analyses incorporating 60 HSS numerically generated welded circular tubular columns with various section sizes were carried out. The resulting FE and experimental results were compared with the existing column design curves in Chinese, European and American codes. Numerical results showed that the design resistances calculated based on design curve a in both GB50017-2003 and Eurocode 3 and the design formula in the ANSI/AISC 360-10 could be adopted. In addition, to further improve the design efficiency, a column design curve based on Eurocode 3 formulation with a new imperfection factor of 0.17 was proposed for the design of such HSS welded tubular columns.
Original languageEnglish
Pages (from-to)71-81
Number of pages11
JournalJournal of Constructional Steel Research
Volume100
DOIs
Publication statusPublished - 1 Jan 2014
Externally publishedYes

Keywords

  • 420 MPa high strength steel
  • Column buckling
  • Column test
  • Design method
  • Finite element analysis
  • Welded circular steel tube

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Metals and Alloys

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