Numerical Study of Cold-Formed Steel Built-Up Compression Members for Long-Span Structures

Johnny Setiawan*, Ridho Bayuaji, M. Arif Rohman

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

As an alternative to hot-rolled steel, cold-formed steel (CFS) constructions such as beams, columns, trusses, wall frames, and portal frames as well as the usage of back-to-back built-up cold-formed steel channels as compression members are growing in popularity. However, for long-span structures, back-to-back built-up I sections as columns are not yet effective in replacing hot-rolled steel in terms of cost and profile stiffness. To address the instability problems in cold-formed steel sections, built-up sections are developed as innovative sectional profiles where the geometry of the section plays a vital role in enhancing the inherent resistance of such sections against premature buckling and increasing member capacity. In the literature, very few results for cold-formed steel have been reported for such conventional back-to-back built-up I sections and have never discussed the behavior of gapped built-up and built-up batten column sections on long-span structures. This paper presents a numerical investigation of the gapped built-up sections and built-up battened columns sections as alternatives to built-up section columns for long-span structures. The results show from a comparison of material weight with a gapped built-up column that an efficiency of 8.23 and 12.83% can be obtained from the built-up batten column compared to the standard back-to-back I section.

Original languageEnglish
Title of host publicationProceedings of the 8th International Conference on Civil Engineering - ICOCE 2024
EditorsEric Strauss
PublisherSpringer Science and Business Media Deutschland GmbH
Pages19-32
Number of pages14
ISBN (Print)9789819759095
DOIs
Publication statusPublished - 2025
Event8th International Conference on Civil Engineering, ICOCE 2024 - Singapore, Singapore
Duration: 22 Mar 202424 Mar 2024

Publication series

NameLecture Notes in Civil Engineering
Volume539 LNCE
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

Conference8th International Conference on Civil Engineering, ICOCE 2024
Country/TerritorySingapore
CitySingapore
Period22/03/2424/03/24

Keywords

  • Back-to-back
  • Battened column
  • Cold-formed steel
  • Compression
  • Gapped built-up
  • Long-span structure

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