scholarly journals Effects of edge-stiffened circular holes on the web crippling strength of cold-formed steel channel sections under one-flange loading conditions

2017 ◽  
Vol 139 ◽  
pp. 96-107 ◽  
Author(s):  
Asraf Uzzaman ◽  
James B.P. Lim ◽  
David Nash ◽  
Ben Young
Keyword(s):  
Loading Conditions ◽  
Web Crippling ◽  
Circular Holes ◽  
Cold Formed Steel ◽  
The Web

Experimental investigation on the web crippling behaviour of pultruded GFRP wide-flange sections subjected to two-flange loading conditions

2021 ◽  
Vol 259 ◽  
pp. 113469 ◽  
Author(s):  
Jyotirmoy Haloi ◽  
Suman Kumar Mushahary ◽  
Arun Chandra Borsaikia ◽  
Konjengbam Darunkumar Singh
Keyword(s):  
Experimental Investigation ◽  
Loading Conditions ◽  
Web Crippling ◽  
The Web

Experimental Investigation of Cold-Formed Steel Tubes Subjected to Web Crippling

2012 ◽  
Vol 166-169 ◽  
pp. 322-328
Author(s):  
Huai Lin Peng ◽  
Feng Zhou ◽  
Le Wei Tong
Keyword(s):  
Experimental Investigation ◽  
North American ◽  
Steel Sheet ◽  
Steel Structures ◽  
Steel Tubes ◽  
Concentrated Load ◽  
Web Crippling ◽  
European Code ◽  
Cold Formed Steel ◽  
The Web

A series of tests on cold-formed steel square and rectangular hollow sections subjected to web crippling is reported in this paper. The web crippling tests were conducted under two loading conditions of end-two-flange (ETF) and interior-two-flange (ITF), which are specified in the current North American Specification for cold-formed steel structures. The concentrated load was applied by means of bearing plates, which act across the full flange width of the specimen sections. Different bearing lengths were investigated. The test specimens were fabricated by cold-rolling from steel sheet with nominal yield strength of 345MPa. The measured web slenderness values of the tubes ranged from 15.5 to 46.0. The test strengths obtained from this study are compared with the design strengths obtained using the current North American Specification, Australia Standard, European Code and Chinese Code for cold-formed steel structures. It is shown that the design strengths predicted by the specifications are either unreliable or too conservative.

scholarly journals Numerical Simulation and Design Recommendations for Web Crippling Strength of Cold-Formed Steel Channels with Web Holes under Interior-One-Flange Loading at Elevated Temperatures

Buildings ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 666
Author(s):  
Zhiyuan Fang ◽  
Krishanu Roy ◽  
Hao Liang ◽  
Keerthan Poologanathan ◽  
Kushal Ghosh ◽  
...  
Keyword(s):  
Parametric Analysis ◽  
Elevated Temperatures ◽  
Reduction Factor ◽  
Strength Reduction ◽  
Hole Size ◽  
Strength Reduction Factor ◽  
Web Crippling ◽  
Study Results ◽  
Cold Formed Steel ◽  
The Web

This paper investigates the interior-one-flange web crippling strength of cold-formed steel channels at elevated temperatures. The stress-strain curves of G250 and G450 grade cold-formed steel (CFS) channels at ambient and elevated temperatures were taken from the literature and the temperatures were varied from 20 to 700 °C. A detailed parametric analysis comprising 3474 validated finite element models was undertaken to investigate the effects of web holes and bearing length on the web crippling behavior of these channels at elevated temperatures. From the parametric study results, it was found that the web crippling strength reduction factor is sensitive to the changes of the hole size, hole location, and the bearing length, with the parameters of hole size and hole location having the largest effect on the web crippling reduction factor. However, the web crippling strength reduction factor remains stable when the temperature is changed from 20 to 700 °C. Based on the parametric analysis results, the web crippling strength reduction factors for both ambient and elevated temperatures are proposed, which outperformed the equations available in the literature and in the design guidelines of American standard (AISI S100-16) and Australian/New Zealand standard (AS/NZS 4600:2018) for ambient temperatures. Then, a reliability analysis was conducted, the results of which showed that the proposed design equations could closely predict the reduced web crippling strength of CFS channel sections under interior-one-flange loading conditions at elevated temperatures.

Local buckling capacity of C-shaped cold-formed steel sections with punched webs

1984 ◽  
Vol 11 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Robert Loov
Keyword(s):  
Local Buckling ◽  
Effective Width ◽  
Test Results ◽  
Average Yield ◽  
Steel Sections ◽  
Load Tests ◽  
Cold Formed Steel ◽  
Stub Column ◽  
Best Fit ◽  
The Web

Load tests were carried out on 36 stub column samples of cold-formed steel studs having 38.1 mm wide × 44.5 mm long holes punched through their webs, steel thicknesses of 1.21–2.01 mm, and overall section depths of 63–204 mm. Based on these tests a best-fit equation for the effective width of the unstiffened portion of the web beside the holes has been developed. Suggested design equations have been proposed. The test results support the present equation for the average yield stress [Formula: see text] in Canadian Standards Association Standard S136-1974 but the present code equations for unstiffened plates are unduly conservative when applied to the design of the web adjacent to openings of the size considered.

Web crippling capacities of fastened aluminium lipped channel sections subjected to one-flange loading conditions

Structures ◽  
2021 ◽  
Vol 33 ◽  
pp. 1754-1763
Author(s):  
Husam Alsanat ◽  
Shanmuganathan Gunalan ◽  
Keerthan Poologanathan ◽  
Hong Guan
Keyword(s):  
Loading Conditions ◽  
Web Crippling

Reinforced Circular Holes in Bending With Shear

1953 ◽  
Vol 20 (2) ◽  
pp. 279-285
Author(s):  
S. R. Heller
Keyword(s):  
Stress Distribution ◽  
Arbitrary Shape ◽  
Theoretical Solution ◽  
Bead Type ◽  
Circular Holes ◽  
Radial Thickness ◽  
Bending With Shear ◽  
The Web

Abstract The object of this paper is the determination of the effect of the reinforcement of circular holes on the stress distribution in the webs of beams subjected to bending with shear. A theoretical solution for a bead-type reinforcement, i.e., small radial thickness, is developed. The stress distribution in the web for arbitrary shape reinforcement is based on the work of Reissner and Morduchow (1). The theory developed is valid provided the diameter of the hole does not exceed one fourth of the depth of the beam.

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