PREDICTING THE COLLAPSE BEHAVIOUR OF LIGHT STEEL FLOOR TRUSSES IN FIRE

S Choi, I Burgess, R Plank

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Abstract

This paper investigates the performance of individual floor trusses of the type used at the World Trade Center using software developed over a number of years to model the behaviour of steel and composite framed structures in fire. A variety of scenarios are considered, including different truss forms, degree of protection, and span length, and load ratio. Issues which are considered include the identification of critical truss members, the interaction between flexural behaviour and catenary action at increasing levels of deflection, and the forces which develop in the connections. Results are generally presented as graphs of increasing deflection with temperature or time, and recommendations are given regarding the use of such structural forms for different fire resistance requirements.
Original languageEnglish
Title of host publicationCTBUH / CIB Kuala Lumpur 2003 Conference
Number of pages7
Publication statusPublished (in print/issue) - Oct 2003
EventCTBUH / CIB 2003 Conference - Kuala Lumpur , Malaysia
Duration: 20 Oct 200323 Oct 2003

Conference

ConferenceCTBUH / CIB 2003 Conference
Country/TerritoryMalaysia
CityKuala Lumpur
Period20/10/0323/10/03

Keywords

  • Fire
  • Steel trusses
  • Collapse
  • Deflection

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