Experimental evaluation of compression resistance of HC-FST columns after fire
Date
2006Author
Kvedaras, Audronis Kazimieras
Blaževičius, Žygimantas
Metadata
Show full item recordAbstract
There are only a few analytical methods to estimate the post-fire resistance of composite column and there are a large amount of different geometrical and physical parameters, which influence on the post-fire resistance. Experimental investigation is the way to find out the influence of different parameters and to develop or to revise the analytical formulas that evaluate the known influences. There are not too much researches carried out on the post-fire behaviour of concrete-filled steel tubular columns. In this paper there are presented data of the experimental investigation of post-fire behaviour of axially loaded HC-FST (hollow concrete-filled steel tubular) columns with a wide range of different parameter measuring. Behaviour of such columns, which were used without a fire protection, after their exposure to fire, similar to standard12 fire, has been experimentally investigated in conditions of normal ambient temperature. The experimental values of post-fire resistance were measured and failure mode was determined for 4 axially loaded HC-FST columns. For the comparison with post-fire investigation results the testing of axially loaded columns under the normal ambient conditions were performed and these results are presented. These tests included: 4 HC-FST columns, 8-th HC-FST and 4 HCT (hollow concrete tubular) stub columns.