An experimental study on the local buckling strength of an SBHS700 stub column with cruciform section: With an overview of the mechanical properties of SBHS700

Jing Nie, Hikaru Sugimoto, Kiyoshi Ono, Takeshi Miyashita, Masahide Matsumura, Seiji Okada

Research output: Contribution to journalArticle

Abstract

Kurita-Albrecht Young Engineers Award 2018 – Steel. Recently, SBHS (Steels for Bridge High-Performance Structure) has been introduced in Japan because of its remarkable mechanical properties. The main features of SBHS are high yield strength, improved toughness and weldability, which are superior to conventional steel materials at the corresponding tensile strength grades. In this study, these material properties of SBHS were compared with conventional steel materials through experimental studies as well as the Japanese design specifications. The main focus of this paper is the evaluation of the local buckling strength of two SBHS700 stub columns, each with cruciform section through compression tests. The load-displacement relationship, strain bifurcation related to plate buckling and out-of-plane deformation are discussed. Two test specimens with different width-to-thickness ratio parameters R R are compared. As the results indicate, for the specimen having a larger R R , an abrupt decrease in load was observed after the peak load, whereas the decrease in load for the specimen with a smaller R R proceeded gradually after the peak load with a much larger vertical displacement. In terms of local buckling strength, it was found to be possible to evaluate the SBHS700 stub column with cruciform section based on the existing ultimate strength curves.

Original languageEnglish
Pages (from-to)82-90
Number of pages9
JournalSteel Construction
Volume12
Issue number2
DOIs
Publication statusPublished - 2019 May 1

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Steel
Buckling
Mechanical properties
Weldability
Toughness
Yield stress
Loads (forces)
Materials properties
Tensile strength
Specifications
Engineers

Keywords

  • compression tests
  • cruciform section
  • local buckling strength
  • mechanical properties
  • SBHS700
  • Steel bridges
  • stub columns
  • Tests

ASJC Scopus subject areas

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

Cite this

An experimental study on the local buckling strength of an SBHS700 stub column with cruciform section : With an overview of the mechanical properties of SBHS700. / Nie, Jing; Sugimoto, Hikaru; Ono, Kiyoshi; Miyashita, Takeshi; Matsumura, Masahide; Okada, Seiji.

In: Steel Construction, Vol. 12, No. 2, 01.05.2019, p. 82-90.

Research output: Contribution to journalArticle

Nie, Jing ; Sugimoto, Hikaru ; Ono, Kiyoshi ; Miyashita, Takeshi ; Matsumura, Masahide ; Okada, Seiji. / An experimental study on the local buckling strength of an SBHS700 stub column with cruciform section : With an overview of the mechanical properties of SBHS700. In: Steel Construction. 2019 ; Vol. 12, No. 2. pp. 82-90.
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