Behaviour of axially loaded structural bolting assemblies in fire

Authors

  • Lucy Johnson
  • Eric Palmiere
  • Richard Thackray
  • Ian Burgess
  • Buick Davison

Abstract

Bolt assemblies used in structural connections may fail in tension via two modes: Necking, which is a ductile failure, and thread stripping, which is a brittle failure mechanism. During a fire, a ductile failure mode is preferable as it provides continued load transfer from beams to columns for the longest amount of time, allowing for building evacuation. Bolt assemblies have been tested under tension at a range of strain rates and temperatures to observe both failure modes. Tests showed that those bolts with a non-martensitic microstructure failed in a beneficial ductile manner, contrary to the current standards.

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Published

2015-10-15

Issue

2013: Proceedings of International Conference in Prague 19-20 April 2013

Section

Articles

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