5-7 December 2018 - Hong Kong, China

CONFERENCE PAPERS

Ninth International Conference on Advances in Steel Structures (ICASS 2018)


TORSION OF BUILT-UP BOXED COLD-FORMED CHANNEL SECTIONS

 

Zehua Wang 1* and John Papangelis 2

School of Civil Engineering, The University of Sydney, Sydney, Australia

E-mails: This email address is being protected from spambots. You need JavaScript enabled to view it., This email address is being protected from spambots. You need JavaScript enabled to view it.

DOI:10.18057/ICASS2018.P.004

ABSTRACT:

Built-up boxed cold-formed channel section beams, which consist of two single-channel sections fastened on the top and bottom flanges, are used as flooring and roofing members in buildings. By combining the two channels to form a closed box section, this can increase the flexural-torsional buckling capacity of the beam beyond the capacity of two single channels. The flexural-torsional buckling strength very much depends on the torsion and warping constants of the beam. Although these section properties can be easily determined for a single channel section, the calculation of these quantities for a boxed section with intermediate fasteners is not so well understood due to the discontinuity of the cross-section. In this paper, a finite element analysis is used to analyze a built-up boxed beam under uniform and non-uniform torsion. The results are used to calculate the torsion constant and warping constant for built-up boxed cold-formed channel sections with different geometries and fastener spacings. The results are compared with two single-channel sections and with closed boxed sections.

Keywords:

Torsion; Built-up Channel; Boxed section; Torsion constant; Warping constant; Finite element analysis

Download PDF:

IMPORTANT DATES

First call for paper:
1 January 2018
Abstract submission: (CLOSED)
1 April 2018
Notification of abstract acceptance:
on or before 16 April 2018 
Full paper submission: 
15 July 2018
Online Registration Begins:
1 August 2018
Notification of full paper acceptance:
31 August 2018
Early bird registration:
on or before 7 September 2018
Online Registration Closes:
31 October 2018
Announcement of programme:
1 November 2018
ICASS2018 December 05, 2018 08:00 AM