Research Of Stability Performance Of Steel Component And Steel Frame Store In High Temperature(Fire)

The steel structure development grows day by day due to its advantage properities such as high strength、light weight、good earthquake resistance performance、easily installed and so on.But the poor fire-resistance ability is the main weakness of steel structure, its basic mechanical property such as strength and elastic modulus and so on decrease severely in high temperature.When fire occures,the steel structure construction has the possibility to have the serious destruction,even the premature whole collapses, creates the serious economic loss and the personnel casualty.Now in China there are two kinds of fire resistance design methods,one is the test-based fire resistance design method, the other is calculation-based fire resistance design method.However,using the tesed-based fire resistance design method,it is costly and very difficult to simulate the magnitude and distribution of loads and the end restriction conditions of the specimens in the structure and so on.So the research of calculation-based fire resistance design method is more important.In this paper,based on the research dynamic condition of steel structures fire resistance in the domestic and foreign, according to the heat transfer study classical theory, using the ANSYS finite element software,has researched the Stability Performance of Steel Component and Steel Frame Store in High Temperature(fire) including horizontal displacement displacement and the calculation of remaining capacity. Steel Frame Store post-disaster safety assessment is also researched in the article.Through theoretical analysis,getting the statistical analysis of the fire load density, then the posted-disaster will be projected by Assessment Analysis and the Parameters of the component’s damage maximum temperature、remaining capacity、Combustion duration are also provided,in order to not only blind to achieve consolidation, but also protect the living and the use of security, promoting the effective use of housing purposes.The research of the Stability Performance of Steel Component and Steel Frame Store at High Temperature(fire) in this article has certain reference value to the steel structure under the real fire function.