Direct Strength Method for Web Crippling of Cold-Formed Steel C and Z Sections subjected to Interior One Flange Loading and End One Flange Loading.

摘要

The main objective of this research is to extend the "Direct strength method" for determining the web crippling strength of cold-formed steel C and Z sections subjected to End one flange loading and Interior one flange loading conditions. Direct strength method is applied for designing the columns and beams earlier.;The existing specifications equation for calculating the web crippling strength of cold-formed steels designed by American Institute of Iron and Steel is very old method and it is based on the extensive experimental investigations conducted at different universities.;Calculating the web crippling strength of cold-formed steels using direct strength method is a new technique. In the present research the web crippling strength of cold-formed steels were calculated using Direct Strength Method.;The experimental data is collected from the tests that were conducted at different universities. The critical buckling strength of the members were calculated using Abaqus. Microsoft excel is used to generate the equations. The safety and resistance factors for the designed equations were calculated using "Load and resistance factor design" and "Allowable strength design" from North American Cold-Formed Steel Specification, 2012 edition book.