Research Article
Dec 1977
Simple Weight-Optimization Scheme for Steel Frames
Authors: Karl R. Leimbach, M.ASCE, and Heinz G. LiekwegAuthor Affiliations
Publication: Journal of the Structural Division
Volume 103, Issue 12
Abstract
Weight-optimization studies of steel frames are executed as iterative fully stressed designs of models consisting of axial force bars and quadrilateral shear panels. The bars represent the flanges and the shear panels the web of the actual structural steel member. The stiffness characteristics of the shear panels are derived from the principle of minimum complementary energy, assuming constant shearing stress in the interior and linear boundary displacements. Minimum and maximum cross-sectional properties, in addition to allowable stresses, are used as constraints. Elastic-plastic shear buckling of the web is controlled by checking against the provisions of the steel design code and overall stability by an iterative consideration of equilibrium on the deformed structure. A four-bay two-story framework with a crane rail is optimized to demonstrate the utility in a typical industrial structural design problem.
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Published In
Journal of the Structural Division
Volume 103 • Issue 12 • December 1977
Pages: 2377 - 2396
Copyright
© 1977 American Society of Civil Engineers.
History
Published in print: Dec 1977
Published online: Feb 1, 2021
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Authors
Affiliations
Karl R. Leimbach, M.ASCE
Chf. Engr., Inst. fur Konstruktiuen Ingenieurbau, Ruhr-Univ., Bochum, West Germany
Heinz G. Liekweg
Scientific Asst., Inst. fur Konstruktiuen Ingenieurbau, Ruhr-Univ., Bochum, West Germany
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.