Strength of Partially Encased Composite Columns Subjected Eccentric Compression
In order to investigate the structural behavior of partially encased concrete (PEC) short columns subjec ted to eccentric compression, this paper describes and presents the results of 12 stub-column tests performed on partially encased concrete composite columns made with welded H-section steel.The H-section steel is stiffened with transverse link and concrete is poured between the flanges of the steel section.The parameters of columns include width-to-thickness ratio of the flange, eccentricity of the axial load and steel ratio.The specimens tested included 12 composite stub columns with a cross section of 250 mm×250 mm.The compre hensive study has been conducted on all specimens to investigate the behavior of PEC columns.The failure of all columns was due to local buckling of the flanges along with concrete crushing.Effects of steel ratio,hoops ratio and eccentricity of the axial load on columns capacities are studied.The experimental results show that the load-carrying capacity is reduced with increased eccentricity.The steel ratio and hoops ratio has no obvious influence for eccentrically loaded columns capacity, but which are important parameters af fecting ductility of PEC columns.
Gentian Zhao Minzhen Qin Liaoyang Wang
School of architecture & civil engineering, Inner Mongolia university of science & technology, Baotou, China
国际会议
哈尔滨
英文
268-272
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）