Direct Strength Method for Web Crippling of Cold-formed Steel C- and Zsections Subjected to One-flange Loading Martin Dara
Martin Dara and Cheng Yu*
Department of Engineering Technology, University of North Texas, Denton, TX, USA
- *Corresponding Author:
- Cheng Yu
Department of Engineering Technology
University of North Texas, Denton, TX, USA
E-mail: [email protected]
Received Date: October 13, 2015; Accepted Date: December 10, 2015; Published Date: December 17, 2015
Citation: Dara M, Yu C (2015) Direct Strength Method for Web Crippling of Cold-formed Steel C- and Z- sections Subjected to One-flange Loading. J Steel Struct Constr 1:105. doi:10.4172/2472-0437.1000105
Copyright: © 2015 Dara M, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Cold-formed steel flexural members can experience buckling failure at the web when compressive loads are applied to the flanges. Determining the web crippling strength analytically can be difficult because it depends on various parameters including loading conditions, bearing length, thickness of the material, web inclination, flange lengths etc. Due to these parameters, the current design method was developed based on the experimental data only. The paper presents an attempt to develop a semi-analytical design approach for the web crippling strength using the Direct Strength Method concept. The focus is on the cold-formed steel C and Z sections subjected to onflange loading conditions. The research indicates that the Direct Strength Method is appropriate for predicting the web crippling strength. New design equations are proposed and verified by with the experimental results.