Buckling behavior of bundled inclined columns: Experimental study and design code verification

Moussa Leblouba , Samer Barakat , Raghad Awad , Saif Uddin Al-Khaled , Abdulrahman Metawa , Abdul Saboor Karzad

Abstract

Not all structural columns maintain a vertical orientation. Several contemporary building structures have inclined columns, introducing distinct challenges, particularly in buckling behavior. This study examines the buckling behavior of inclined, thin-walled steel bundled columns, differing from typical vertical columns. Using specimens with three tubes welded to plates linearly aligned at the top and triangularly at the bottom, tests indicated that buckling capacity increases with tube wall thickness and diameter but decreases with column height. Inclined tubes in bundled columns showed improved buckling resistance over vertical ones. Results were verified against standard steel design guidelines to assess their predictive accuracy.

Key Words

buckling behavior; bundled column; inclined columns; steel; thin-walled

Address

Moussa Leblouba — Department of Civil & Environmental Engineering, College of Engineering, University of Sharjah, United Arab Emirates
Samer Barakat — Department of Civil & Environmental Engineering, College of Engineering, University of Sharjah, United Arab Emirates
Raghad Awad — Department of Civil & Environmental Engineering, College of Engineering, University of Sharjah, United Arab Emirates
Saif Uddin Al-Khaled — Department of Civil & Environmental Engineering, College of Engineering, University of Sharjah, United Arab Emirates
Abdulrahman Metawa — Department of Civil & Environmental Engineering, College of Engineering, University of Sharjah, United Arab Emirates
Abdul Saboor Karzad — 2Department of Civil Engineering, Faculty of Engineering, University of Ottawa, Canada

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