Experimental investigation on cold-formed high strength steel tubular T-joints after fire exposures

Madhup Pandey, Ben Young

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

Abstract

An experimental study has been presented to investigate the static strengths of cold-formed S960 steel T-joints after ISO-834 fire exposures. A total of 9 T-joints was tested after cooling down from 300°C, 550° C and 750°C temperatures. Braces and chords were made of square and rectangular hollow sections. Automatic gas metal arc welding process was used to weld brace and chord members. The measured value of brace-tochord width ratio (β) ranged from 0.41 to 1.0, brace-to-chord thickness ratio (τ) ranged from 0.98 to 1.02 and chord width-to-thickness ratio (2γ) ranged from 30.6 to 35.3. The post-fire residual joint strengths were compared with the nominal strengths predicted from Eurocode 3 and CIDECT using the measured post-fire residual mechanical properties. It is shown that the existing design rules given in Eurocode 3 and CIDECT could not accurately predict the post-fire residual joint strengths of cold-formed steel tubular T-joints made of S960 steel grade.

Original languageEnglish
Title of host publicationCurrent Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems - Proceedings of the 8th International Conference on Structural Engineering, Mechanics and Computation, 2022
EditorsAlphose Zingoni
PublisherCRC Press/Balkema
Pages1178-1184
Number of pages7
ISBN (Print)9781003348443
DOIs
Publication statusPublished - Jan 2023
Event8th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2022 - Cape Town, South Africa
Duration: 5 Sept 20227 Sept 2022

Publication series

NameCurrent Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems - Proceedings of the 8th International Conference on Structural Engineering, Mechanics and Computation, 2022

Conference

Conference8th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2022
Country/TerritorySouth Africa
CityCape Town
Period5/09/227/09/22

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Computational Mechanics

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