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Author:

Zhao, Jinyou (Zhao, Jinyou.) | He, Jiaqi (He, Jiaqi.) | Chen, Boshan (Chen, Boshan.) | Zhang, Wenying (Zhang, Wenying.) | Yu, Shaole (Yu, Shaole.)

Indexed by:

EI Scopus SCIE

Abstract:

This paper aims to investigate the buckling behaviors of cold-formed steel (CFS) channels with slotted web holes determined by the Steel Stud Manufacturers Association (SSMA) under eccentric compression, and propose the simplified direct strength method (DSM) formulas for engineering practicing. An experimental study on 20 specimens was conducted, including 18 slotted perforated specimens with nine eccentricities increasing from-20 mm to 20 mm and 2 unperforated specimens subjected to axial compression. Two kinds of nominal lip lengths for cross sections were selected as 15 mm and 20 mm. The experimental results indicated that the failure modes of slotted perforated specimens subjected to eccentric compression depended on the position of the ec-centricity. Compared with the slotted perforated specimens subjected to pure axial compression, the ultimate loads of specimens subjected to positive eccentric compression decreased by 21.70 % on average, while they decreased by 16.38 % on average for those subjected to negative eccentric compression. Moreover, a nonlinear elasto-plastic finite element model (FEM) was developed and validated against the experimental results. Furthermore, combined with the experimental results, extensive FE parametric analyses were conducted to predict the eccentricity impact coefficient formulas. Finally, based on DSM of unperforated CFS members sub-jected to pure axial compression in AISI S100-16 and the eccentricity impact coefficient formulas, the suitable DSM design formulas for slotted perforated CFS channels determined by the SSMA under eccentric compression were proposed, without the need to calculate the elastic buckling critical stress for slotted perforated CFS channels.

Keyword:

Direct strength method Cold -formed steel channel Eccentricity impact coefficient Eccentric compression test Web holes

Author Community:

  • [ 1 ] [Zhao, Jinyou]Shanghai Inst Technol, Sch Urban Construct & Safety Engn, Shanghai 201418, Peoples R China
  • [ 2 ] [Zhao, Jinyou]Northeast Forestry Univ, Sch Civil Engn, Harbin 150040, Peoples R China
  • [ 3 ] [He, Jiaqi]Northeast Forestry Univ, Sch Civil Engn, Harbin 150040, Peoples R China
  • [ 4 ] [Chen, Boshan]Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China
  • [ 5 ] [Zhang, Wenying]Beijing Univ Technol, Fac Architecture Civil & Transportat Engn, Beijing 100084, Peoples R China
  • [ 6 ] [Yu, Shaole]China Construct Eighth Engn Div Co Ltd, Beijing 100084, Peoples R China

Reprint Author's Address:

  • [Zhao, Jinyou]Shanghai Inst Technol, Sch Urban Construct & Safety Engn, Shanghai 201418, Peoples R China;;[Zhao, Jinyou]Northeast Forestry Univ, Sch Civil Engn, Harbin 150040, Peoples R China;;[Chen, Boshan]Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China;;

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Source :

ENGINEERING STRUCTURES

ISSN: 0141-0296

Year: 2023

Volume: 285

5 . 5 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:19

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 9

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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