STUDY ON COLD-FORMED STEEL LIPPED CHANNEL BEAM WITH WEB PERFORATION SUBJECTED TO WEB CRIPPLING UNDER ETF LOADING CASE
Author(s):
JAISURYA J, RAJARAJESHWARI N
Keywords:
Abstract
Cold-formed sections are widely employed in steel construction because they are lighter and more economical than traditional hot-rolled members. CFS sections are recently been utilized in construction due to their numerous advantages such as higher load-to-weight ratio, flexibility to shape as well as availability in relatively long spans. CFS channel sections can be used as purlins and joists in the structural system; thus, they are vulnerable to different buckling instabilities including web crippling. Validation of cold-formed steel lipped channel sections with web openings subjected to web crippling was undertaken using finite element (FE) analysis and matched with experimental test results, to investigate the effects of web holes and cross-section sizes on the web crippling strengths of channel sections subjected to web crippling under end-two-flange (ETF) loading conditions. In this loading conditions, the hole was centred beneath the bearing plate. It was demonstrated that the main factors influencing the web crippling strength are the ratio of the hole depth to the flat depth of the web, and the ratio of the length of bearing plates to the flat depth of the web. Web openings could be used in cold-formed steel beam members, such as wall studs or floor joints, to facilitate ease of services in buildings. In this paper a combination of tests using finite element analyses method and experimental test results were used to investigate the effect of such holes on web crippling under end-one-flange (ETF) loading condition. The present paper includes web crippling strength of channel section by numerical study, where the models are validated against the performed experiments.
Article Details
Unique Paper ID: 158864

Publication Volume & Issue: Volume 9, Issue 10

Page(s): 867 - 871
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