Compression tests of cold-formed channel sections with perforations in the web

Title
Compression tests of cold-formed channel sections with perforations in the web
Author(s)
권영봉김갑득[김갑득]권인규[권인규]
Keywords
BEHAVIOR; DESIGN; PLATES
Issue Date
201406
Publisher
TECHNO-PRESS
Citation
STEEL AND COMPOSITE STRUCTURES, v.16, no.6, pp.657 - 679
Abstract
This paper describes a series of compression tests performed on cold-formed steel channel sections with perforations in the web (thermal studs) fabricated from a galvanized steel plate whose thickness ranged from 1.0 mm to 1.6 mm and nominal yield stress was 295 MPa. The structural behavior and performance of thermal studs undergoing local, distortional, or flexural-torsional buckling were investigated experimentally and analytically. The compression tests indicate that the slits in the web had significant negative effects on the buckling and ultimate strength of thin-walled channel section columns. The compressive strength of perforated thermal studs was estimated using equivalent solid channel sections of reduced thickness instead of the studs. The direct strength method, a newly developed and adopted alternative to the effective width method for designing cold-formed steel sections in the AISI Standard S100 (2004) and AS/NZS 4600 (Standard Australia 2005), was calibrated to the test results for its application to cold-formed channel sections with slits in the web. The results verify that the DSM can predict the ultimate strength of channel section columns with slits in the web by substituting equivalent solid sections of reduced thickness for them.
URI
http://hdl.handle.net/YU.REPOSITORY/31951
ISSN
1229-9367
Appears in Collections:
공과대학 > 건설시스템공학과 > Articles
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