Iterative Limit Analysis for Tall Frames

by Niels C. Lind,

Serial Information: Journal of the Structural Division, 1964, Vol. 90, Issue 2, Pg. 103-130

Document Type: Journal Paper


Practical plastic design can be extended to cover tall frames and beam columns by an iterative analysis that takes force-deflection interaction into account. The state of deformation is used herein as the independent variable. The design load is achieved by a trial-and-error method. This approach is most advantageous because it automatically satisfies deformation constraints, and because it involves a new and more simple formulation of the beam-column elements of the structure. A short cut analysis for tall frames also is derived. Application is illustrated by examples of simple and continuous beam columns and a four story frame. The theory is confirmed by a few experimental results and comparison with a computer solution.

Subject Headings: Beam columns | Frames | Continuous beams | Limit analysis | Plastic design | Deformation (mechanics) | Plastic analysis | Displacement (mechanics)

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