Experimental behaviour of thin-walled hollow structural steel (HSS) columns filled with self-consolidating concrete (SCC)

摘要: In modern building construction, thin-walled hollow structural steel (HSS) sections are often filled with concrete to form a composite column. recent years, the use of self-consolidating (SCC), or self-compacting concrete, in such kinds columns has been interest many engineers. Due its rheological properties, disadvantage vibration can be eliminated while still obtaining good consolidation. Apart from reliability and constructability, advantages as elimination noise processing plants, reduction construction time labor cost achieved. It is expected that SCC will used concrete-filled HSS future because performance. However, members susceptible influence compaction. The lack information on behavior indicates need for further research this area. The present study an attempt possibility using SCC. New test data 38 investigate compaction methods member capacities reported. specimen tests allowed different conditions likely arise manufacture concrete: cured, well compacted poker vibrator, by hand, without any vibration. main parameters varied are: (1) column section type, circular square; (2) tube diameter (or depth) thickness ratio, 33 67; (3) load eccentricity ratio (e/r), 0 0.3 mm. Comparisons made predicted strengths existing codes AISC-LRFD-1999, AIJ-1997, BS5400-1979, EC4-1994, DL5085/T-1999 GJB4142-2000.