Research Article
Nov 1977
Strength and Drift Characteristics of Steel Frames
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VIEW THE REPLYAuthors: Le-Wu Lu, M.ASCE, Shosuke Morino, Omer S. Okten, J. Hartley Daniels, M.ASCE, and Erkan OzerAuthor Affiliations
Publication: Journal of the Structural Division
Volume 103, Issue 11
Abstract
The strength and drift characteristics of unbraced multistory steel frames subjected to combined loads are studied with emphasis on P-Δ effect. Seven frames having dimensions and loads typical of those found in apartment and office structures were selected. Four designs are made for each frame: three stress-controlled designs and one drift controlled design. The frames are then analyzed for their response under proportioned and nonproportioned loads. Results show that even though the strength of the structures is reduced by P-Δ effect, all stress designs can achieve a wind load factor equal to or greater than 1.40 under proportional loads, 2.06 under nonproportional loads with gravity load maintained at working value. The stress design having columns proportioned to satisfy AISC provisions does not show significant increase in strength when compared with the design neglecting instability effect. The drift designs have large wind load-carrying capacity, ranging from 1.45 to 4.0, depending on the amount of gravity load.
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Published In
Journal of the Structural Division
Volume 103 • Issue 11 • November 1977
Pages: 2225 - 2241
Copyright
© 1977 American Society of Civil Engineers.
History
Published in print: Nov 1977
Published online: Feb 1, 2021
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Authors
Affiliations
Le-Wu Lu, M.ASCE
Prof. of Civ. Engrg., and Dir., Building Systems Div., Fritz Engrg. Lab., Lehigh Univ., Bethlehem, Pa.
Shosuke Morino
Asst. Prof., Dept. of Architecture, Kyushu Univ., Kyushu, Japan; formerly, Research Assoc., Fritz Engrg. Lab., Lehigh University, Bethlehem, Pa., Japan
Omer S. Okten
Grad. Student, Faculty of Architecture, Istanbul Technical Univ., Istanbul, Turkey; formerly, Research Asst., Fritz Engrg. Lab., Lehigh Univ., Bethlehem, Pa., Turkey
J. Hartley Daniels, M.ASCE
Prof. of Civ. Engrg., Fritz Engrg. Lab., Lehigh Univ., Bethlehem, Pa.
Erkan Ozer
Assoc. Prof. of Civ. Engrg., Istanbul Technical Univ., Istanbul, Turkey; formerly, Research Assoc., Fritz Engrg. Lab., Lehigh Univ., Bethlehem, Pa., Turkey
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
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.