Research Article
Feb 1968
Analysis of Elastic-Plastic Grid Systems
Authors: Tongchat Hongladaromp, Edwin C. Rossow, AM.ASCE, and Seng-Lip Lee, M.ASCEAuthor Affiliations
Publication: Journal of the Engineering Mechanics Division
Volume 94, Issue 1
Abstract
An incremental load method for analyzing the piecewise linear behavior of elastic-plastic grid systems with various support conditions is presented. The assumption is made that the torsional rigidity of the members is negligible. The equilibrium and compatibility equations are written in terms of bending moments, plastic hinge rotations, load parameters and an elastic-plastic transition function. The use of this transition function allows the formulation to be applicable to every regime as well as facilitates the treatment of the reversal of plastic hinge rotations. A technique of linear scaling is employed to determine the points of transition including the state of incipient plastic collapse. The collapse mechanism is verified by means of the solution of a system of hinge rotation equations. The analysis provides the complete load-deflection history of the grid systems from the elastic regime, through all the intermediate regimes, up to and including the collapse regime. Numerical examples are given to illustrate the method of analysis.
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Published In
Journal of the Engineering Mechanics Division
Volume 94 • Issue 1 • February 1968
Pages: 241 - 270
Copyright
© 1968 American Society of Civil Engineers.
History
Published in print: Feb 1968
Published online: Feb 3, 2021
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Affiliations
Tongchat Hongladaromp
Sr. Structural Engr., Skidmore Owings & Merrill, Chicago, Ill.
Edwin C. Rossow, AM.ASCE
Asst. Prof. of Engrg., Northwestern Univ., Evanston, Ill.
Seng-Lip Lee, M.ASCE
Prof. of Engrg., Northwestern·Univ., Evanston, Ill.
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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.