Research Of Performance-based Fire Protection Design For The Steel Structure In The Fire

With the tradition wooden structure, brick stone structure and reinforced concrete structure are compared, steel structure has intensity height, the self-respect is light, the earthquake resistance performance is good, installation is convenient, and industrialization degree is advanced. With the advancement of society and increasing by needing, its application is very extensive. In practice, the fire-resistance of exposed steel structure is bad, and is afraid of burn. In order to enhance the steel structure fireproof limit and the overall fire-resistant time reduces the steel structure the fire damage with to avoid the structure the whole collapsing causes the personnel casualty in the fire, therefore, it is necessary to research the fire protection and the fire fire-resistance of steel structure.The steel structure fire protection mainly includes the fire protection method and the fire protection material. In this article, through the literature research, to analyze the steel structure fire protection method, the applicable scope and its advantages and disadvantages, and the applicable scope and the technical performance of the steel structure fire resistive coating.In this article, based on research of the steel structure fire resistance of the predecessor, the Steel girder and the steel pole of H-section of brushed the thick fire resistive coating in the fire is analyzed by using Finite Element Software Ansys. As follows:(1)To analyze the Steel girder and the steel pole of H-section which the temperature changes with time that the steel structure spreads the fire resistive coating when thickness 20mm.(2)To analyze the Steel girder and the steel pole of H-section which the temperature changes with time that the steel structure spreads the fire resistive coating when thickness 15mm.(3)To analyze result which the fire resistive coating thickness of the steel structure is 20mm and 15mm by Finite Element, find out that the temperature changes with time which fire resistive coating of the different thickness of steel component.The researched results in the article have the important reference value to the steel structure fire protection research, design and construction.