Effect of Concrete Infill and Slenderness on Column-Face Component in Anchored Blind-Bolt Connections

Tizani, Walid; Mahmood, Mohammed; Bournas, Dionysios

Abstract

© 2020 American Society of Civil Engineers. Previous research on blind-bolted connections to hollow columns have provided a wealth of experimental data but little information on parametric analytical models to guide their design. One of the connection components that requires further understanding is the column-face bending. This paper presents the results and evaluation of experimental tests and finite element analyses for the bending behavior of the column-face component. Tests were conducted on full-scale connections to investigate the effect of concrete type and strength on the component. The results demonstrated that concrete strength has a direct influence on component strength and stiffness. The increase in concrete strength correlated with a significant increase in component strength. The increase in component stiffness was less significant, and is found to be limited by the column slenderness ratio (width/thickness). Slenderness ratio limits were defined beyond which the increase in concrete strength has no effect on component stiffness. A formula for evaluating the confinement effect on the concrete infill is proposed. The strength and stiffness of the component were not affected when using self-compacting concrete, but the use of lightweight concrete reduced both strength and stiffness. The failure mode of the component is bolt anchorage failure followed by a complete yielding of the column face plate around the bolts.

Citation

Tizani, W., Mahmood, M., & Bournas, D. (2020). Effect of Concrete Infill and Slenderness on Column-Face Component in Anchored Blind-Bolt Connections. Journal of Structural Engineering, 146(4), 1-18. https://doi.org/10.1061/%28ASCE%29ST.1943-541X.0002557

• Journal Article Type: Article
• Acceptance Date: Aug 19, 2019
• Online Publication Date: Feb 6, 2020
• Publication Date: 2020-04
• Deposit Date: Sep 9, 2019
• Publicly Available Date: Sep 9, 2019
• Journal: Journal of Structural Engineering (United States)
• Print ISSN: 0733-9445
• Electronic ISSN: 1943-541X
• Publisher: American Society of Civil Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 146
• Issue: 4
• Article Number: 04020041
• Pages: 1-18
• DOI: https://doi.org/10.1061/%28ASCE%29ST.1943-541X.0002557
• Keywords: Anchored bolted connection; column face bending; concrete strength; concrete filled tubular columns
• Public URL: https://nottingham-repository.worktribe.com/output/2590872
• Publisher URL: https://ascelibrary.org/doi/10.1061/%28ASCE%29ST.1943-541X.0002557
• Additional Information: This material may be downloaded for personal use only. Any other use requires prior permission of the American Society of Civil Engineers. This material may be found at https://ascelibrary.org/doi/10.1061/%28ASCE%29ST.1943-541X.0002557
• Contract Date: Sep 9, 2019