Frontiers of Structural and Civil Engineering
>> 2009,
Volume 3,
Issue 4
doi:
10.1007/s11709-009-0058-6
Research articles
Experimental research on self-stressing and self-compacting
concrete filled steel tube columns subjected to eccentric load
School of Civil and
Hydraulic Engineering, Dalian University of Technology, Dalian 116024,
China;
Available online: 2009-12-05
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Abstract
A total of fifteen self-stressing and self-compacting concrete (SSC) filled steel tube columns and three common self-compacting concrete filled steel tube (CFST) columns are tested under eccentric compression load to analyze the effect of initial self-stress on the compression behavior of CFSTs. The results show that the elastic working range of the columns is lengthened because of initial self-stress and it slightly decreases with the increase of load eccentricity ratio and slenderness ratio. Because of the initial self-stress, the concrete core is always under compression in three directions, so the compactness is enhanced and the ultimate bearing capacity obviously increases; but the initial self-stress hardly affects the failure mode of the columns.
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