Numerical study and design of thin walled cold formed steel built-up open and closed section columns
作者： Soumia Kherbouche , Abdellatif Megnounif
DOI: 10.1016/J.ENGSTRUCT.2018.10.069
关键词:
摘要: Abstract This paper, based on new proposed approaches, is a numerical investigation of the behavior thin-walled cold-formed steel built-up columns under uniform compression. Two types cross sections have been studied, closed and open formed by two channels connected battens plates. First, nonlinear finite element model has developed results obtained show good agreement against experimental results, such as ultimate strength, type deformed shapes at failure lateral displacement. Second, approach DSM where local, distortional or global buckling numerically, using method software, thickness contact area in web taken 1.0 times plate “t”, instead 1.5 2.0 “t”. In this case, compound section acting one rigidly section. Comparisons with data give satisfactory degree accuracy design (DSM-t) are more conservative than those found DSM-1.5 DSM-2. The for either sections, also slightly failing modes local ones, if compared AISI EC3 specifications. Some parameters, spacing channels-web length ratio (B1/D) influence stability strength columns.
sci-hub.se 参考文章(15)
Mohamed Dabaon, Ehab Ellobody, Khaled Ramzy, Nonlinear behaviour of built-up cold-formed steel section battened columns Journal of Constructional Steel Research. ,vol. 110, pp. 16- 28 ,(2015) , 10.1016/J.JCSR.2015.03.007
Jia-Hui Zhang, Ben Young, Numerical investigation and design of cold-formed steel built-up open section columns with longitudinal stiffeners Thin-walled Structures. ,vol. 89, pp. 178- 191 ,(2015) , 10.1016/J.TWS.2014.12.011
Jessica Whittle, Chris Ramseyer, Buckling capacities of axially loaded, cold-formed, built-up C-channels Thin-walled Structures. ,vol. 47, pp. 190- 201 ,(2009) , 10.1016/J.TWS.2008.05.014
A. Megnounif, M. Djafour, A. Belarbi, D. Kerdal, Strength buckling predictions of cold-formed steel built-up columns Structural Engineering and Mechanics. ,vol. 28, pp. 443- 460 ,(2008) , 10.12989/SEM.2008.28.4.443
T.A. Stone, R.A. LaBoube, Behavior of cold-formed steel built-up I-sections Thin-walled Structures. ,vol. 43, pp. 1805- 1817 ,(2005) , 10.1016/J.TWS.2005.09.001
Jia-Hui Zhang, Ben Young, Compression tests of cold-formed steel I-shaped open sections with edge and web stiffeners Thin-walled Structures. ,vol. 52, pp. 1- 11 ,(2012) , 10.1016/J.TWS.2011.11.006
Krisda Piyawat, Chris Ramseyer, Thomas H.-K. Kang, Development of an Axial Load Capacity Equation for Doubly Symmetric Built-Up Cold-Formed Sections Journal of Structural Engineering. ,vol. 139, pp. 04013008- ,(2013) , 10.1061/(ASCE)ST.1943-541X.0000780
Iveta Georgieva, Luc Schueremans, Lincy Pyl, Lucie Vandewalle, Numerical study of built-up double-Z members in bending and compression Thin-walled Structures. ,vol. 60, pp. 85- 97 ,(2012) , 10.1016/J.TWS.2012.07.005
Mohamed Dabaon, Ehab Ellobody, Khaled Ramzy, Experimental investigation of built-up cold-formed steel section battened columns Thin-walled Structures. ,vol. 92, pp. 137- 145 ,(2015) , 10.1016/J.TWS.2015.03.001
Ehab Ellobody, Ben Young, Behavior of Cold-Formed Steel Plain Angle Columns Journal of Structural Engineering-asce. ,vol. 131, pp. 457- 466 ,(2005) , 10.1061/(ASCE)0733-9445(2005)131:3(457)