Influence of connection design on the inelastic seismic response of HSS steel bracing members

M. Haddad, R. Tremblay

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Citations (Scopus)

Abstract

The design of brace connections for concentrically braced steel frames detailed for ductile inelastic seismic response is examined. The study focuses on bracing members made of square hollow structural steel shapes with welded slotted connections. Different design strategies are investigated to prevent net section fracture and develop the full tensile capacity of the braces. Connections designs for out-of-plane and in-plane buckling of the braces are also proposed and discussed. The response of a brace sample subjected to monotonic loading as well as under quasi-static cyclic displacement history is examined through detailed finite element analysis. Un-reinforced brace connections are found to be prone to premature fracture under tension, especially when defects are present along the slots cut in the tube walls. Connections designed for out-of-plane and in-plane brace buckling resulted in nearly identical cyclic inelastic brace response. For the out-of-plane buckling design, satisfactory brace end rotation responsewas achieved without the free length gusset plate detail proposed in codes.

Original languageEnglish
Title of host publicationTubular Structures XI - Proceedings of the 11th International Symposium and IIW International Conference on Tubular Structures
Pages639-646
Number of pages8
Publication statusPublished - 2006
Externally publishedYes
Event11th International Symposium and IIW International Conference on Tubular Structures - Quebec City, QC, Canada
Duration: Aug 31 2006Sep 2 2006

Publication series

NameTubular Structures XI - Proceedings of the 11th International Symposium and IIW International Conference on Tubular Structures

Conference

Conference11th International Symposium and IIW International Conference on Tubular Structures
Country/TerritoryCanada
CityQuebec City, QC
Period8/31/069/2/06

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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