Splice Connections for Built-Up Column Assemblies in Cold-Formed Steel Construction
Publication: Journal of Structural Engineering
Volume 149, Issue 3
Abstract
The development of simple connection methods is necessary for increasing cold-formed steel (CFS) construction activities. A new splice connection concept for the CFS built-up column-to-column connections is presented in this paper. This simple connection concept will use the same size and shape of the geometry as the CFS built-up column, which will enable a quick erection process. The new splice connection configurations, arrangement, and installation methods for cold-formed steel construction are demonstrated. Twenty-eight experiments, which include four actual columns, two disconnected columns, and 22 columns with splice connections, are carried out. This paper examines the influence of various parameters of splice connections such as length, thickness, and number of fastener rows. The design strength of the actual column is determined using the direct strength method (with modified global and local slenderness approaches) and is compared with the results of the splice connected columns for adequacy. The force transfer mechanism and failure modes of splice connection components are demonstrated in the form of detailed sketches. The smaller length splice connections led to localized failures, while the longer splice connections enabled the uniform force distribution between the built-up column cross-sections. Finally, it is recommended that the splice connection configuration should be a minimum of 300 mm in length, the splice thickness should be equal to the CFS built-up cross-section, and two rows of fasteners for attaining the required design strength of the built-up column members.
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Data Availability Statement
All data, models, or code generated or used during the study appear in the published article.
References
AISI (American Iron and Steel Institute). 2020. North American cold-formed steel specification for the design of cold-formed steel structural members. AISI-S100-2020. Washington, DC: AISI.
ASTM. 2013. Standard test methods for tension testing of metallic materials. E8/E8M-13a. West Conshohocken, PA: ASTM.
Dubina, D., and V. Ungureanu. 2010. “Behaviour of multi-span cold-formed Z-purlins with bolted lapped connections.” Thin-Walled Struct. 48 (10–11): 866–871. https://doi.org/10.1016/j.tws.2010.04.003.
Ho, H. C., and K. F. Chung. 2006. “Structural behavior of lapped cold-formed steel Z sections with generic bolted configurations.” Thin-Walled Struct. 44 (4): 466–480. https://doi.org/10.1016/j.tws.2006.03.012.
Liu, J., L. Xu, and S. Fox. 2015. “Lapped cold-formed steel Z-shaped purlin connections with vertical slotted holes.” J. Constr. Steel Res. 107 (Apr): 150–161. https://doi.org/10.1016/j.jcsr.2015.01.020.
NAHB (National Association of Home Builders). 1997. Research commentary on the prescriptive method for residential cold-formed steel framing, prepared for the US Department of Housing and Urban Development and American Iron and Steel Institute. Upper Marlboro, MD: NAHB Research Center, Inc.
NIST (National Institute of Standards and Technology). 2016. NEHRP seismic design technical brief no. 12—Seismic design of cold-formed steel lateral load-resisting systems—A guide for practicing engineers. NIST GCR 16-917-38. Gaithersburg, MD: NIST.
Selvaraj, S., and M. Madhavan. 2022. “Design of cold-formed steel built-up closed section columns using direct strength method.” Thin-Walled Struct. 171 (Feb): 108746. https://doi.org/10.1016/j.tws.2021.108746.
Serrette, R., and K. Ogunfunmi. 1996. “Shear resistance of gypsum-sheathed light-gauge steel stud walls.” J. Struct. Eng. 122 (4): 383–389. https://doi.org/10.1061/(ASCE)0733-9445(1996)122:4(383).
Serrette, R. L., J. Encalada, M. Juadines, and H. Nguyen. 1997. “Static racking behavior of plywood, OSB, gypsum, and fiber bond walls with metal framing.” J. Struct. Eng. 123 (8): 1079–1086. https://doi.org/10.1061/(ASCE)0733-9445(1997)123:8(1079).
Vieira, L. C. M., Jr. 2011. “Behavior and design of cold-formed steel stud walls under axial compression.” Ph.D. dissertation, Dept. of Civil Engineering, Johns Hopkins Univ.
Vieira, L. C. M., Jr., and B. W. Schafer. 2013. “Behavior and design of sheathed cold-formed steel stud walls under compression.” J. Struct. Eng. 139 (5): 772–786. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000731.
Ye, J., R. Feng, W. Chen, and W. Liu. 2016. “Behavior of cold-formed steel wall stud with sheathing subjected to compression.” J. Const. Steel Res. 116 (Jan): 79–91. https://doi.org/10.1016/j.jcsr.2015.08.028.
Zhang, L., and G. Tong. 2008. “Moment resistance and flexural rigidity of lapped connections in multi-span cold-formed Z purlin systems.” Thin-Walled Struct. 46 (5): 551–560. https://doi.org/10.1016/j.tws.2007.10.010.
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© 2022 American Society of Civil Engineers.
History
Received: Apr 4, 2022
Accepted: Oct 7, 2022
Published online: Dec 16, 2022
Published in print: Mar 1, 2023
Discussion open until: May 16, 2023
ASCE Technical Topics:
- Cold region construction
- Cold-formed steel
- Columns
- Connections (structural)
- Construction (by type)
- Construction engineering
- Construction methods
- Engineering materials (by type)
- Fastening
- Materials engineering
- Metals (material)
- Special condition construction
- Steel
- Steel columns
- Steel construction
- Structural behavior
- Structural engineering
- Structural members
- Structural strength
- Structural systems
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