FIRE ENGINEERING APPLICATION TO MULTISTOREYSTEEL STRUCTURES

摘要

Since the introduction of the new, performancernbased Building Control System, the use of firernengineering in New Zealand has greatly increased.rnWorld leading research is underway and innovativerndesign applications across a range of building typesrnare being undertaken.rnThis paper focuses on the fire engineeringrnapplication to steel structures. It incorporatesrnresults from recent research and building fire casernhistory performance in its coverage. The paperrnbriefly reviews the structural response of multistoreyrnsteel buildings in fire and the buildingrnperformance criteria that should be achieved in firernengineering designs. It then goes on to outlinernappropriate design procedures to use in multi-storeyrnsteel buildings containing unprotected steelrnmembers and which are subject to different levelsrnof structural fire severity.rnHERA (New Zealand Heavy Engineering ResearchrnAssociation) has been at the forefront of developingrna design method for dependably incorporating therninelastic reserve of strength available fromrncomposite floor systems. This has also been thernsubject of a significant research project undertakenrnby the University of Canterbury in conjunction withrnsteel industry participation. That research andrndesign method development/ application isrnreviewed.rnThe paper then gives examples of application tornbuilding projects. This is followed by thernconclusions and references.