Shear Capacity of Cold-Formed Steel Channels with Edge-Stiffened Web Holes, Unstiffened Web Holes, and Plain Webs
Publication: Journal of Structural Engineering
Volume 148, Issue 2
Abstract
In this paper, a total of 254 results comprising 30 shear tests and 224 finite element (FE) analysis results are reported. Simply supported test specimens of cold-formed steel (CFS) channels with aspect ratios of 1.0 and 1.5 were tested. For comparison, specimens with unstiffened web holes and plain webs were also tested. A nonlinear elastoplastic FE model was then developed and validated against the experimental results. Using the validated FE model, a parametric study was conducted to investigate the effect of various influential parameters on the shear capacity of such CFS channels. The test results show that for a channel with edge-stiffened web holes, the shear capacity increased by 14.5% on average when compared with that of a channel with unstiffened web holes. The test and FE results were compared against the design predictions. Upon comparison, it was found that the design rules of CFS channels with unstiffened web holes in accordance with the AISI and AS/NZS can be unconservative by 7% while calculating the shear capacity of CFS channels with edge-stiffened web holes. Therefore, a suitable design formula in the form of a shear capacity reduction factor was proposed for CFS channels with edge-stiffened web holes.
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Data Availability Statement
All of the data and models generated or used during the study appear in the published article.
Acknowledgments
Test specimens were provided by Howick NZ. Ltd. and this is greatly acknowledged by the authors. The shear tests were carried out at the University of Auckland.
References
AISI (American Iron and Steel Institute). 2016. North American specification for the design of cold-formed steel structural members, 2016 edition. AISI S100-16w. Washington, DC: AISI.
AS/NZS (Australia/New Zealand Standard). 2018. Cold-formed steel structures. AS/NZS 4600:2018. Sydney, Australia: AS/NZS.
Chen, B., K. Roy, Z. Fang, A. Uzzaman, Y. Chi, and J. B. P. Lim. 2021a. “Web crippling capacity of fastened cold-formed steel channels with edge-stiffened web holes, un-stiffened web holes and plain webs under two-flange loading.” Thin-Walled Struct. 163 (Jun): 107666. https://doi.org/10.1016/j.tws.2021.107666.
Chen, B., K. Roy, Z. Fang, A. Uzzaman, G. M. Raftery, and J. B. P. Lim. 2021b. “Moment capacity of back-to-back cold-formed steel channels with edge -stiffened hole, un-stiffened hole, and plain web.” Eng. Struct. 235 (May): 112042. https://doi.org/10.1016/j.engstruct.2021.112042.
Chen, B., K. Roy, A. Uzzaman, and J. B. P. Lim. 2020a. “Moment capacity of cold-formed channel beams with edge-stiffened web holes, un-stiffened web holes and plain webs.” Thin-Walled Struct. 157 (Dec): 107070. https://doi.org/10.1016/j.tws.2020.107070.
Chen, B., K. Roy, A. Uzzaman, G. M. Raftery, and J. B. P. Lim. 2020b. “Axial strength of back-to-back cold-formed steel channels with edge-stiffened holes, un-stiffened holes and plain webs.” J. Constr. Steel Res. 174 (Nov): 106313. https://doi.org/10.1016/j.jcsr.2020.106313.
Chen, B., K. Roy, A. Uzzaman, G. M. Raftery, and J. B. P. Lim. 2020c. “Parametric study and simplified design equations for cold-formed steel channels with edge-stiffened holes under axial compression.” J. Constr. Steel Res. 172 (Sep): 106161. https://doi.org/10.1016/j.jcsr.2020.106161.
Chen, B., K. Roy, A. Uzzaman, G. M. Raftery, D. Nash, G. C. Clifton, P. Pouladi, and J. B. P. Lim. 2019. “Effects of edge-stiffened web openings on the behaviour of cold-formed steel channel sections under compression.” Thin-Walled Struct. 144 (Nov): 106307. https://doi.org/10.1016/j.tws.2019.106307.
Chi, Y., K. Roy, B. Chen, Z. Fang, A. Uzzaman, and J. B. P. Lim. 2021. “The effect of opening spacing on the axial capacity of built-up cold-formed steel channel sections with edge-stiffened web holes.” Steel Compos. Struct. 40 (2): 287–305. https://doi.org/10.12989/scs.2021.40.2.287.
Eiler, M. R., R. Laboube, and W. W. Yu. 1997. Behaviour of web elements with openings subjected to linearly varying shear. Rolla, MO: Univ. of Missouri-Rolla.
Fang, Z., K. Roy, B. Chen, C. W. Sham, I. Hajirasouliha, and J. B. P. Lim. 2021a. “Deep learning-based procedure for structural design of cold-formed steel channel sections with edge-stiffened and un-stiffened holes under axial compression.” Thin-Walled Struct. 166 (Sep):108076. https://doi.org/10.1016/j.tws.2021.108076.
Fang, Z., K. Roy, J. Mares, C. W. Sham, B. Chen, and J. B. P. Lim. 2021b. “Deep learning-based axial capacity prediction for cold-formed steel channel sections using deep belief network.” In Vol. 33 of Structure, 2792–2802. Amsterdam, Netherlands: Elsevier. https://doi.org/10.1016/j.istruc.2021.05.096.
Howick Ltd. 2013. Floor joist system. Auckland, New Zealand: Howick.
ISO. 2009. Metallic materials: Tensile testing: Part 1: Method of test at room temperature. ISO E. 6892-1. Geneva: ISO.
Keerthan, P., and M. Mahendran. 2013. “Experimental studies of the shear behaviour and strength of lipped channel beams with web openings.” Thin-Walled Struct. 73 (Dec): 131–144. https://doi.org/10.1016/j.tws.2013.06.018.
Keerthan, P., and M. Mahendran. 2014. “Improved shear design rules for lipped channel beams with web openings.” J. Constr. Steel Res. 97 (Jun): 127–142. https://doi.org/10.1016/j.jcsr.2014.01.011.
Keerthan, P., and M. Mahendran. 2015. “Experimental investigation and design of lipped channel beams in shear.” Thin-Walled Struct. 86 (Jan): 174–184. https://doi.org/10.1016/j.tws.2014.08.024.
LaBoube, R. A., and W. W. Yu. 1978. Strength of cold-formed steel beam webs in bending, shear, and a combination of bending and shear. Rolla, MO: Univ. of Missouri-Rolla.
Li, H. T., and B. Young. 2019. “Cold-formed high-strength steel tubular structural members under combined bending and bearing.” J. Struct. Eng. 145 (8): 04019081. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002371.
Pham, C. H., and G. J. Hancock. 2009. “Shear buckling of thin-walled channel sections.” J. Constr. Steel Res. 65 (3): 578–585. https://doi.org/10.1016/j.jcsr.2008.05.015.
Pham, C. H., and G. J. Hancock. 2010a. “Experimental investigation of high strength C-sections in combined bending and shear.” J. Struct. Eng. 136 (7): 866–878. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000172.
Pham, C. H., and G. J. Hancock. 2010b. “Numerical simulation of high strength cold-formed purlins in combined bending and shear.” J. Constr. Steel Res. 66 (10): 1205–1217. https://doi.org/10.1016/j.jcsr.2010.04.014.
Pham, D. K., C. H. Pham, and G. J. Hancock. 2020a. “Parametric study for shear design of cold-formed channels with elongated web openings.” J. Constr. Steel Res. 172 (Sep): 106222. https://doi.org/10.1016/j.jcsr.2020.106222.
Pham, D. K., C. H. Pham, S. H. Pham, and G. J. Hancock. 2020b. “Experimental investigation of high strength cold-formed channel sections in shear with rectangular and slotted web openings.” J. Constr. Steel Res. 165 (Feb): 105889. https://doi.org/10.1016/j.jcsr.2019.105889.
Pham, S. H., C. H. Pham, and G. J. Hancock. 2017. “Direct strength method of design for channel sections in shear with square and circular web holes.” J. Struct. Eng. 143 (6): 04017017. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001765.
Pham, S. H., C. H. Pham, C. A. Rogers, and G. J. Hancock. 2020c. “Shear strength experiments and design of cold-formed steel channels with web holes.” J. Struct. Eng. 146 (1): 04019173. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002464.
Roy, K., H. H. Lau, T. C. H. Ting, B. Chen, and J. B. P. Lim. 2020. “Flexural capacity of gapped built-up cold-formed steel channel sections including web stiffeners.” J. Constr. Steel Res. 172 (Sep): 106154. https://doi.org/10.1016/j.jcsr.2020.106154.
Shan, M. Y., R. A. LaBoube, J. E. Langan, and W. W. Yu. 1997. “Cold-formed steel webs with openings: Summary report.” Thin-Walled Struct. 27 (1): 79–84. https://doi.org/10.1016/0263-8231(96)00021-3.
Uzzaman, A., J. B. P. Lim, D. Nash, and K. Roy. 2020a. “Cold-formed steel channel beams under end-two-flange loading condition: Design for edge-stiffened holes, unstiffened holes and plain webs.” Thin-Walled Struct. 147 (Feb): 106532. https://doi.org/10.1016/j.tws.2019.106532.
Uzzaman, A., J. B. P. Lim, D. Nash, and K. Roy. 2020b. “Web crippling behaviour of cold-formed steel channel sections with edge-stiffened and unstiffened circular holes under interior-two-flange loading condition.” Thin-Walled Struct. 154 (Sep): 106813. https://doi.org/10.1016/j.tws.2020.106813.
Uzzaman, A., J. B. P. Lim, D. Nash, and B. Young. 2017. “Effects of edge-stiffened circular web openings on the web crippling strength of cold-formed steel channel beams under one-flange loading conditions.” Eng. Struct. 139 (15): 96–107. https://doi.org/10.1016/j.engstruct.2017.02.042.
Yu, C. 2012. “Cold-formed steel flexural member with edge stiffened web openings: Behavior, optimization, and design.” J. Constr. Steel Res. 71 (Apr): 210–218. https://doi.org/10.1016/j.jcsr.2011.09.008.
Information & Authors
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Published In
Journal of Structural Engineering
Volume 148 • Issue 2 • February 2022
Copyright
© 2021 American Society of Civil Engineers.
History
Received: May 29, 2021
Accepted: Sep 27, 2021
Published online: Nov 25, 2021
Published in print: Feb 1, 2022
Discussion open until: Apr 25, 2022
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