Cross-Sectional Behavior of Aluminum Alloy Channel Section Stub Columns after Exposure to Fire
Publication: Journal of Structural Engineering
Volume 149, Issue 7
Abstract
This paper presents experimental and numerical investigations on the cross-sectional behavior and compressive capacities of aluminum alloy channel section stub columns after exposure to fire. A testing program was performed, including heating tests, postfire material tests, geometric imperfection measurements, and 16 stub column tests. The testing program was followed by a numerical modeling program. Finite-element models were developed to simulate the test responses and conduct parametric studies to obtain additional numerical data. The obtained test and numerical data were analyzed and adopted to perform design analyses, in which the applicability of the relevant room-temperature design rules in the American, European, and Australian/New Zealand codes to the postfire design of aluminum alloy channel sections under compression were examined. The results of the design analyses reveal that all three examined design codes yield excessively conservative and scattered predictions of postfire strengths, owing to the neglect of significant postfire material strain hardening. Then, a new design approach was proposed by rationally considering the material strain hardening. The new proposal was found to offer greatly improved design accuracy and consistency compared to the American, European, and Australian/New Zealand codes, especially for aluminum alloy channel sections after exposure to elevated temperatures above 400°C.
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Data Availability Statement
All data used during the study are reported in this paper.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 149 • Issue 7 • July 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Jan 9, 2023
Accepted: Mar 15, 2023
Published online: Apr 27, 2023
Published in print: Jul 1, 2023
Discussion open until: Sep 27, 2023
ASCE Technical Topics:
- Alloys
- Aluminum (material)
- Analysis (by type)
- Channels (waterway)
- Construction engineering
- Construction management
- Design (by type)
- Engineering fundamentals
- Engineering materials (by type)
- Hydraulic design
- Hydraulic engineering
- Hydraulic structures
- Materials engineering
- Measurement (by type)
- Metals (material)
- Models (by type)
- Numerical analysis
- Numerical models
- Standards and codes
- Temperature effects
- Temperature measurement
- Water and water resources
- Waterways
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Cited by
- Hongdong Ran, Jing Ma, Xiangrong Chen, Yao Sun, Michaela Gkantou, Daniel McCrum, Local Stability of Laser-Welded Stainless-Steel T-Section Stub Columns, Journal of Structural Engineering, 10.1061/JSENDH.STENG-13323, 150, 7, (2024).