Research Article
Feb 1976
Column Design by P Delta Method
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VIEW THE REPLYAuthors: Brian R. Wood, Denis Beaulieu, and Peter F. Adams, M.ASCEAuthor Affiliations
Publication: Journal of the Structural Division
Volume 102, Issue 2
Abstract
Generally, the analyses used to determine the distribution of bending moments and internal forces in a structure are first-order analyses. Such analyses neglect the so called P-Δ effects: (the effects produced by the vertical forces acting through the laterally deflected position of the structure). Thus, the stiffness and strength of the structure is overestimated. In an attempt to compensate for these shortcomings, the present design procedure requires increases in the column sizes in a sway permitted structure. As an alternative, a method for directly including the P-Δ moments in the analysis of the structure is presented. It is shown that if such an analysis is used, the members in both braced and unbraced structures may be designed as sway prevented.
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Published In
Journal of the Structural Division
Volume 102 • Issue 2 • February 1976
Pages: 411 - 427
Copyright
© 1976 American Society of Civil Engineers.
History
Published in print: Feb 1976
Published online: Feb 1, 2021
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Affiliations
Brian R. Wood
Instr., Camosun Coll., Victoria, British Columbia
Denis Beaulieu
Grad. Student, Dept. of Civ. Engrg., Univ. of Alberta, Edmonton, Alberta
Peter F. Adams, M.ASCE
Prof. of Civ. Engrg., Univ. of Alberta, Edmonton, Alberta
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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.