SYMPOSIA PAPER Published: 01 January 1988
STP27264S

Analysis and Test of a Torsional Sensitive C-Shaped Prefabricated Brick Spandrel Panel

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Recognizing the inherent torsional flexibility of an open C-section, the authors analyzed in detail the dead and live load behavior of the section under review. The section consisted of a sloping sill, a vertical spandrel, and a horizontal soffit configuration fabricated as a continuous bent plate. The three planes when joined together form an open C-section. To explore the stress patterns in this shaped plate, the authors modeled the analysis for a hand solution. This was then compared to a more rigorous solution using a finite-element computer approach.

The hand approach determined the principal axes of inertia, the shear centers, and the principal states of stress by Mohr's circle. Comparison is shown with graphic plots of principal stresses from the finite-element analysis. The latter technique makes a detailed investigation possible, including plots of both principal tensile and shearing stresses. The modeling of the complex metal embedments at each reaction location was also possible by the finite-element solution.

Full-scale testing of the panel was made utilizing dead weight from brick loading platforms that exerted gravity and wind loading on the spandrel panel through a series of compound lever frames. Contrary to results of brittle torsional failure expected from the analytical work, the experimental behavior demonstrated a capacity to a load factor of five without cracking or collapse.

Author Information

Arnold, RC
Wiss, Janney, Elstner Associates, Inc., Northbrook, IL
Dondanville, LJ
Wiss, Janney, Elstner Associates, Inc., Northbrook, IL
Krogstad, NV
Wiss, Janney, Elstner Associates, Inc., Northbrook, IL
Monk, CB
Wiss, Janney, Elstner Associates, Inc., Northbrook, IL
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Details
Developed by Committee: C15
Pages: 118–144
DOI: 10.1520/STP27264S
ISBN-EB: 978-0-8031-5060-7
ISBN-13: 978-0-8031-1168-4