Shear Diaphragm Bracing of Beams. II: Design Requirements
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Volume 134, Issue 3
Abstract
Light gauge metal decking is commonly used in the building and bridge industries for concrete formwork. In addition to supporting the wet concrete, the metal forms also improve the lateral-torsional buckling capacity of the beams or girders they are fastened to since they behave as a shear diaphragm and restrain the warping deformation of the top flange. The design requirements for shear diaphragm bracing are not well established. This is the second part of a two-part paper. The first part of the paper focused on the general stability bracing behavior for shear diaphragms connected to the top flanges of adjacent beams or girders. This part of the paper outlines the design requirements for shear diaphragm bracing and focuses on both the stiffness and strength requirements for beam stability. Design expressions are presented for the stiffness and strength requirements as well as a model that can be used to estimate the forces in the fasteners that connect the diaphragms to the top flanges of the beams. An example is presented at the end of the paper demonstrating the use of the design expressions.
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References
AISC. (2005a). Commentary specification for structural steel buildings, 13th Ed., Chicago.
AISC. (2005b). Manual of steel construction, 13th Ed., Chicago.
AISC. (2005c). Specification for structural steel buildings, 13th Ed., Chicago.
ANSYS. (2000). “Finite element program users manual, version 5.7.” ANSYS, Inc., Canonsburg, Pa.
Egilmez, O., Helwig, T. A., and Herman, R. S. (2005). “Strength of metal deck forms used for stability bracing of steel bridge girders.” Proc., Structural Stability Research Council/North American Steel Construction Conf., Montreal, 257–276.
Galambos, T. V., ed. (1998). Guide to stability design criteria for metal structures, 5th Ed., Wiley, New York.
Helwig, T. A., and Frank, K. H. (1999). “Diaphragm stiffness requirements for beam bracing.” J. Struct. Eng., 125(11), 1249–1256.
Helwig, T. A., Frank, K. H., and Yura, J. A. (1997). “Lateral-torsional buckling of singly-symmetric. I: Beams.” J. Struct. Eng., 123(9), 1172–1179.
Luttrell, L. D. (2004). Steel Deck Institute diaphragm design manual, 3rd Ed., Canton, Ohio.
Yura, J. A. (1995). “Bracing for stability-state-of-the-art.” Proc., Structures Congress XIII, ASCE, New York, 88–103.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 134 • Issue 3 • March 2008
Pages: 357 - 363
Copyright
© 2008 ASCE.
History
Received: Jun 8, 2006
Accepted: Jun 1, 2007
Published online: Mar 1, 2008
Published in print: Mar 2008
Notes
Note. Associate Editor: Donald W. White
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