Behavior of Steel-Plate Composite Wall Piers under Biaxial Loading
Publication: Journal of Structural Engineering
Volume 145, Issue 2
Abstract
Steel-plate composite (SC) structures may be subjected to combination of in-plane and out-of-plane forces for extreme loading combinations (e.g., seismic and accident thermal). This paper presents the results from behavioral and experimental investigations conducted to evaluate the interaction of in-plane and out-of-plane forces on SC wall piers (without boundary elements). Experimental results indicate that the effect of out-of-plane forces on the in-plane behavior of SC wall piers depends on the location and magnitude of the out-of-plane loading. Wall piers subjected to out-of-plane shear equal to their nominal shear strength (per US codes) develop flexural yielding and failure due to interaction between the in-plane and out-of-plane moments. Shear failure does not occur in these wall piers. Wall piers subjected to out-of-plane shear forces significantly greater than the nominal shear strength (per US codes) are forced into a shear failure mode by the interaction of in-plane shear and out-of-plane shear. An interaction equation for in-plane and out-of-plane moments is developed to characterize the flexure-controlled behavior of wall piers. This interaction equation can be used to design and to evaluate the behavior of SC wall piers subjected to combination of in-plane and out-of-plane moments.
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Acknowledgments
Canadian Nuclear Safety Commission (CNSC) funded the research project (Contract 87055-12-0436). Dr. Andrew Whittaker and Dr. Amit Varma were the Co-Principal Investigators for the project. Dr. Brian Terranova, Dr. Saahastaranshu Bhardwaj, Dr. Efe Kurt, and Dr. Siamak Epackachi were the graduate students and research scientists involved in the project. Dr. Nebojsa Orbovic was CNSC’s representative on the project. The experiments were conducted collaboratively at Bowen Laboratory in Purdue University. Tzu-chun Tseng helped with preparation of the manuscript. The authors acknowledge the contributions of all these individuals to the research project. The opinions and findings presented in this paper are limited to those of the authors.
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Published In
Journal of Structural Engineering
Volume 145 • Issue 2 • February 2019
Copyright
©2018 American Society of Civil Engineers.
History
Received: Feb 9, 2018
Accepted: Jul 23, 2018
Published online: Dec 5, 2018
Published in print: Feb 1, 2019
Discussion open until: May 5, 2019
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