Collapse Loads of Laced Columns

by Sven Eilif Svensson, Chf. Engr.; Ramboll & Hannemann, Inc., Consulting Engrs., Teknikerbyen 38, DK 2830, Virum, Denmark,
Jan Kragerup, Engr.; Ramboll & Hannemann, Inc., Consulting Engrs., Teknikerbyen 38, DK 2830, Virum, Denmark,


Serial Information: Journal of the Structural Division, 1982, Vol. 108, Issue 6, Pg. 1367-1384


Document Type: Journal Paper

Errata: (See full record)

Abstract:

The imperfection sensitivity of laced columns is investigated, the imperfection consisting of both a local and an overall geometrical imperfections. A simple numerical method is given and used for solving the linear elastic as well as the linear elastic-ideally plastic problem. The collapse load in the latter case is approximated with the load, initiating yielding in the structure. It is shown that the linear-elastic column, after reaching the collapse load, behaves almost like a shell and must, therefore, be expected to be sensitive to imperfections. It is shown that the relative drop in capacity of the linear elastic-ideal plastic column is largest when the two critical Euler stresses and the yield stress all coincide.



Subject Headings: Failure loads | Columns | Structural failures | Linear functions | Elastoplasticity | Elastic analysis | Yield stress | Numerical methods

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