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Importance factor for design of bridges against fire hazard

Nomenclature</h5> φ parameter weight</P>ψ class factor</P>ψ g geometrical features, material properties and design characteristics class factor</P>ψ h hazard (fire) likelihood class factor</P>ψ t traffic demand class factor</P>ψ e economic impact class factor</P>ψ f expected fire losses class factor</P>φ x ( max ) maximum weightages factors of each parameter in class ( x )</P>φ i,x weightage factor of sub-parameter ( i ) in class ( x )</P>φ total summation of maximum weightages factors of all parameters</P>Δ class coefficient</P>φ i,x score value in an individual parameter of class ( x )</P>λ overall class coefficient</P>IF importance factor</P>1 Introduction</h5> Bridges are built to last for several decades and serve a variety of commuters. Hence, they are exposed to multiple loadings and various risks throughout their service life. In recent years, bridge fires are becoming a growing concern due to rapid development of urban ground transportation and increased shipping of hazardous materials (flammable materials, spontaneously combustible materials, dangerous materials, etc.) [1,2] . Further, bridges are open to general population and easily accessible; with minimum or no security at all, hence they are susceptible to vandalism or sabotage which can often lead to fires. Since fire is a destructive force in nature, fires can http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Engineering Structures Elsevier
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