Ultimate strength and design of lipped channel columns experiencing local/distortional mode interaction - Part II: Dsm design approach

Nuno Silvestre, Dinar Camotim, Ben Young

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

7 Citations (Scopus)

Abstract

This paper presents the results of an investigation on the ultimate strength and design of fixedended lipped channel columns experiencing local/distortional buckling mode interaction. First, a set of 26 fully fixed lipped channel columns with several cross-section dimensions and yield stresses were tested to determine their failure loads and to provide evidence of the local/distortional interaction phenomenon (see Part I of this paper). Then, a comparison between the column ultimate loads obtained from the tests and those determined from the current DSM provisions clearly indicates that the latter provide inaccurate and often very unsafe strength estimates. Based on the NLD and NDL approaches, a novel DSM including local/distortional interaction provisions is proposed and shown to provide very accurate lipped channel column strength predictions. Finally, some design recommendations are presented.

Original languageEnglish
Title of host publicationICASS '09/IJSSD - Proceedings of Sixth International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics
Pages470-479
Number of pages10
Publication statusPublished - 1 Dec 2009
Externally publishedYes
Event6th International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics, ICASS 2009 - Hong Kong, China
Duration: 16 Dec 200918 Dec 2009

Publication series

NameICASS '09/IJSSD - Proceedings of Sixth International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics

Conference

Conference6th International Conference on Advances in Steel Structures and Progress in Structural Stability and Dynamics, ICASS 2009
CountryChina
CityHong Kong
Period16/12/0918/12/09

Keywords

  • Direct Strength Method (DSM)
  • Distortional and global slenderness
  • High strength mild steel
  • Lipped channel columns
  • Local/distortional mode interaction
  • Ultimate strength

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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