Advances in Steel Structures (ICASS '99)

Advances in Steel Structures (ICASS '99)

Proceedings of The Second International Conference on Advances in Steel Structures 15–17 December 1999, Hong Kong, China
Volume 1, 1999, Pages 341-348
Advances in Steel Structures (ICASS '99)

- Behaviour and Design of Cold-Formed Channel Columns

https://doi.org/10.1016/B978-008043015-7/50040-3Get rights and content

Publisher Summary

This chapter briefly summarizes the tests, theoretical analyses, and design analyses performed at the University of Sydney on cold-formed steel channel columns compressed between fixed ends and pinned ends. The research program was aimed at obtaining experimental evidence to demonstrate the differences in the behavior and strength of fixed-ended and pin-ended singly symmetric columns resulting from local buckling. The test program comprised four different cross-section geometries, two series of plain channels, and two series of lipped channels. The four test series were labeled P36, P48, L36, and L48; where “P” and “L” refer to “plain” and “lipped” channel, respectively. The membrane and the flexural residual stresses were found to be less than 3% and 7% of the measured 0.2% tensile proof stress respectively. Hence, the residual stresses were deemed negligible compared with the 0.2% tensile proof stress. The load-deflection curves demonstrated that the shift in the line of action of the internal force caused by local buckling induces overall bending in a pin-ended channel, but not in a fixed-ended channel. As a result of the different effects of local buckling, the strength of the fixed-ended specimen is higher than the strength of the pin-ended specimen, despite the fact that the specimens had the same effective length of 750 mm for Series L48.

References (0)

Cited by (0)

1

(Formerly, Department of Civil Engineering, University of Sydney, Sydney, NSW 2006, Australia)

View full text