A PARAMETRIC STUDY ON COLD-FORMED STEEL LIPPED CHANNEL BEAM WITH WEB PERFORATION SUBJECTED TO WEB CRIPPLING UNDER ITF LOAD CASE
Author(s):
RAJARAJESHWARI N, JAISURYA J
Keywords:
Abstract
Cold-formed steel sections are widely employed in steel construction because they are lighter and more economical than traditional hot-rolled members. CFS 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. In this phase of this thesis parametric study was conducted to find the effect of web perforations on the web crippling strength of the lipped channel beam under ITF loading condition. The parametric plan was developed to analyze web crippling behavior of lipped channel sections for web holes located at the mid-depth of the web and centered beneath the bearing plates under ITF load case using ABAQUS. Totally 96 numerical analysis was conducted based on two parameters like thickness and perforation ratio. The ultimate web crippling capacity obtained from the parametric study was used to assess the accuracy of the proposed reduction factor given by uzzaman. The assessment revealed that the existing proposed reduction factor was not suitable to predict the ultimate web crippling capacity of cold-formed steel for higher yield stress values under ITF load case. Thus a modified design equation was proposed by comparing the FEA results with uzzaman equation.
Article Details
Unique Paper ID: 161758

Publication Volume & Issue: Volume 10, Issue 6

Page(s): 136 - 140
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