建筑结构学报2017，Vol.38Issue(12)：88-96,9.DOI:10.14006/j.jzjgxb.2017.12.010
钢管混凝土十字形截面柱耐火性能试验研究
Experimental study on fire resistance of cross-shaped concrete filled steel tubular column
摘要
Abstract
Based on the characteristics of concrete filled steel tubular structures and special-shaped columns,a new cross-shaped concrete filled steel tubular column(CFST)with core column and flange column was utilized.In order to investigate the fire resistance performance of this kind of column,test of five full-scale cross-shaped concrete filled steel tubular column specimens were conducted under the ISO 834 standard fire curve.The fire resistance performance of five full-scale cross-shaped column specimens was studied under the ISO 834 standard fire curve.The influence of axial compression ratio and fire retardant coating thickness on the failure behavior,axial deformation and fire resistance of the cross-shaped CFST column at high temperature was analyzed.The test results indicate that the greater the axial compression ratio,the shorter the fire resistance;the thicker the coating thickness,the more obvious the increase of fire resistance.The cross-shaped CFST column has shown great fire resistance performance compared with existing design codes,the fire resistance of the cross-shaped CFST column could reach 190 min.When the thickness of fire retardant coating was 10 mm,the need of thickness of fire retardant coating for the cross-shaped CFST column was 22％ of that of the steel structure column under the design code's requirement.关键词
钢管混凝土十字形截面柱/异形柱/轴压比/防火涂层/耐火试验/耐火极限Key words
cross-shaped concrete filled steel tubular column/special-shaped column/axial compression ratio/fire retardant coating/fire test/fire resistance分类
建筑与水利引用本文复制引用
杨勇,龚志超,邓辉,张林,吴波,赵登攀..钢管混凝土十字形截面柱耐火性能试验研究[J].建筑结构学报,2017,38(12):88-96,9.基金项目
亚热带建筑科学国家重点实验室开放课题(2010KA02),亚热带建筑科学国家重点实验室自主研究课题(X2jzc710071z). （2010KA02）
