Experimental research on self-stressing and self-compacting concrete filled steel tube columns subjected to eccentric load  

作　　者：Chengkui HUANG Zuoqing SHANG Peng ZHANG 

机构地区：[1]School of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China

出　　处：《Frontiers of Structural and Civil Engineering》2009年第4期455-461,共7页结构与土木工程前沿（英文版）

摘　　要：A total of fifteen self-stressing and selfcompacting 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 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.

关 键 词：self-stressing and self-compacting concrete(SSC) concrete filled steel tube(CFST) initial self-stress eccentric compression load ultimate bearing capacity 

分 类 号：TG1[金属学及工艺—金属学]