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作者:

Zhao, Jinyou (Zhao, Jinyou.) | Liu, Jiaqi (Liu, Jiaqi.) | Yu, Cheng (Yu, Cheng.) | Zhang, Wenying (Zhang, Wenying.)

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摘要:

This paper presents a series of test investigations and finite element (FE) analyses on the compressive behaviors of cold-formed steel (CFS) compression members with web holes of different widths and the corresponding direct strength design method is proposed. In the test investigations, a total of twenty specimens were tested under axial compression loading with five different hole width-to-web width ratios of 0, 0.2, 0.4, 0.6, and 0.8. It is shown that the local buckling deformations for specimens with web holes occur in the vicinity of web holes and decrease as the hole widens. For the axial capacities of specimens, they are decreased by 11.7% on average with the increase of hole width-to-web width ratio from 0 to 0.4 while they are decreased by 31.5% on average with the increase of hole width-to-web width ratio from 0.4 to 0.8. In the FE studies, the FE models for CFS compression members with web holes of different widths were developed using the ANSYS program. The simulation results show that the compressive behaviours obtained from FE analyses are in good agreement with test results. Then, combined with test data, a total of 412 FE parametric analyses were conducted to predict the proportional re-lationships between the axial capacities of compression members with web holes and those without web holes, and the hole impact coefficient formulas were correspondingly derived which differ from the previous re-searcher's contribution. Based on the hole impact coefficient formulas and the direct strength method (DSM) of CFS compression members without web holes in AISI S100-2016, the DSM formulas of CFS compression members with web holes were developed, in which the elastic critical buckling stress of CFS compression members with web holes was not necessary to be calculated.

关键词:

Web holes of different widths Finite element (FE) analysis Axial compression test Hole impact coefficient Cold-formed steel compression members Direct strength method (DSM)

作者机构:

  • [ 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 ] [Liu, Jiaqi]Northeast Forestry Univ, Sch Civil Engn, Harbin 150040, Peoples R China
  • [ 4 ] [Yu, Cheng]Univ North Texas, Dept Engn Technol, Denton, TX 76207 USA
  • [ 5 ] [Zhang, Wenying]Beijing Univ Technol, Fac Architecture Civil &Transportat Engn, Beijing 100124, Peoples R China

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来源 :

ENGINEERING STRUCTURES

ISSN: 0141-0296

年份: 2022

卷: 272

5 . 5

JCR@2022

5 . 5 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:49

JCR分区:1

中科院分区:2

被引次数:

WoS核心集被引频次: 7

SCOPUS被引频次: 8

ESI高被引论文在榜: 0 展开所有

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中文被引频次:

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