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Behaviour of structural material subjected to extreme temperatures and axial loads

Poole, Jeziah (2014). Behaviour of structural material subjected to extreme temperatures and axial loads. Bachelor of Engineering (4th Year Project) Thesis, Charles Darwin University.

Document type: Thesis
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Author Poole, Jeziah
Title Behaviour of structural material subjected to extreme temperatures and axial loads
Institution Charles Darwin University
Publication Date 2014
Thesis Type Bachelor of Engineering (4th Year Project)
Subjects 0999 - Other Engineering
Abstract The aim of this thesis was to investigate the behaviour of structural material when subjected to fire and axial loads. The structural material that where investigated were concrete, steel, aluminium, and timber. These materials were investigated in a few different samples, these samples included unreinforced concrete, exposed steel, exposed aluminium, concrete encased steel, concrete encased aluminium, plain timber and timber coated with a fire retardant. The design for fire protection is an ever changing process as research and case study analyses are undertaken into fire damage. Due to the nature of fire damage the most useful information for the furthering of the fire protection design for structures are case studies of usually catastrophic structure failures like the September 11, World Trade Centre attack or the Piper Alpha disaster (Cullen, 1993) (Eager et al, 2001). The risk of failure is also high after the fire has been extinguished as the weakened elements of the structure will fail at a much lower load than the structure was originally designed to withstand. This means that after a fire a structure needs to be assessed to ensure that it is safe and is not likely to collapse. This is highly dangerous and has led to the death of many fire fighters. R.M. Nacewicz in 2006 did an investigation into the fire impact on structural steel through case studies, in that investigation the hazards associated with the inspection of a fire affected structure is that the weakened members start to share loads as they deform which could cause already weakened members to be overloaded and collapse, because of this many fire fighters have lost their lives due to structural collapse while inspecting structures that have been subjected to fire damage.
Keyword fire design
fire and axial load
concrete
steel
aluminium
timber
concrete encased steel
concrete encased aluminium
timber fire retardant
qulifire QRT-100
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Created: Fri, 05 Sep 2014, 15:14:20 CST