Temperature of Steel Columns under Natural Fire

Acta Polytechnica

P. Studecká¹  F. Wald¹  L. Kroupa¹ 

关键词: steel structures;    fire design;    fire test;    compartment temperature;    protected steel;    natural fire;   

DOI  :  

来源: Czech Technical University in Prague, Faculty of M

【 摘 要 】

Current fire design models for time-temperature development within structural elements as well as for structural behaviour are based on isolated member tests subjected to standard fire regimes, which serve as a reference heating, but do not model natural fire. Only tests on a real structure under a natural fire can evaluate future models of the temperature developments in a fire compartment, of the transfer of heat into the structure and of the overall structural behaviour under fire. To study overall structural behaviour, a research project was conducted on an eight storey steel frame building at the  Cardington Building Research Establishment laboratory on January 16, 2003. A fire compartment 11×7 m was prepared on the fourth floor. A fire load of 40 kg/m 2was applied with 100 % permanent mechanical load and 65 % of imposed load. The paper summarises the experimental programme and shows the temperature development of the gas in the fire compartment and of the fire protected columns bearing the unprotected floors.

【 授权许可】

Unknown