A parametric study on the modified slenderness ratio for cold-formed steel built-up back-to back channel stub column
MetadataShow full item record
Built-up member design is addressed in provision C4.5 of the American Iron and Steel Institute 2001 Specification (AISI). A finite elements model of the built-up member was created for this parametric study on the slenderness ratio formulae of the provision C4.5 in AISI design specification. The governing slenderness ratio of built-up member in the AISI design specification is that a/r does not exceed half of the governing slenderness ratio of the overall built-up member. This study examined the 0.5 requirement for this governing slenderness ratio of the built-up member with or without the use of the modified slenderness ratio of the provision C4.5. The parametric study focused on built-up columns composed of two channels connected back-to-back at their webs. This study was performed on stub columns with different material thicknesses and connector spacing. Comparison of the finite element and theoretical results concluded that the use of the modified slenderness equations of provision C4.5 will give a more conservative capacity prediction when the spacing, s between the connectors along the length of the specimen increased. Also, with thicker material thickness, the modified slenderness ratio also will give a more conservative capacity prediction.
Showing items related by title, author, creator and subject.
Effect of thickness on the behaviour of axially loaded back-to-back cold-formed steel built-up channel sections - Experimental and numerical investigationRoy, K.; Ting, T.; Lau, Hieng Ho; Lim, J. (2018)© 2018 Institution of Structural Engineers In cold-formed steel structures, such as trusses, wall frames and portal frames, the use of back-to-back built-up cold-formed steel channel sections are becoming increasingly ...
Mei, C.; Ng, A.; Lau, Hieng Ho; Toh, S. (2009)Lightweight steel structures have been widely used in the construction industry. It is flexible and thus can be designed to cater for different usages. To enhance the application of cold-formed steel structures, innovative ...
Effect of screw spacing on behavior of axially loaded back-to-back cold-formed steel built-up channel sectionsTing, T.; Roy, K.; Lau, Hieng Ho; Lim, J. (2018)In cold-formed steel structures, such as trusses, wall frames, and portal frames, the use of back-to-back built-up cold-formed steel channel sections for the column members is becoming increasingly popular. In such an ...