A New Design Method for Industrial Portal Frames in Fire

Authors

  • Y. Song
  • Z. Huang
  • I. Burgess
  • R. Plank

DOI:

https://doi.org/10.14311/1093

Keywords:

Steel structures, portal frames, fire, boundary conditions, dynamic analysis, plastic theory, base connections.

Abstract

Industrial portal frames near to other buildings must keep their vertical walls standing in fire in order to prevent fire spread.  A recently developed analysis, implemented in the program Vulcan, using a combination of static and dynamic solvers, has shown that the strong base connections recommended by the current design method may not always lead to conservative design. A second-phase failure mechanism observed in numerical modelling, and the critical temperature at which final run-away collapse occurs, may be higher than the temperature at which the roof frame initially loses its stability, because a re-stabilisation often happens.  A new method for estimating critical temperatures of portal frames in fire, using these two failure mechanisms, is presented. Numerical tests on typical industrial frames are used to calibrate this new method. 

Downloads

Download data is not yet available.

Author Biographies

  • Y. Song
  • Z. Huang
  • I. Burgess
  • R. Plank

Downloads

Published

2009-01-01

Issue

Vol. 49 No. 1 (2009)

Section

Articles

License

Authors who publish with this journal agree to the following terms:

1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).

4. ddd

How to Cite

Song, Y., Huang, Z., Burgess, I., & Plank, R. (2009). A New Design Method for Industrial Portal Frames in Fire. Acta Polytechnica, 49(1). https://doi.org/10.14311/1093