ANALYSIS OF CONCRETE-FILLED SQUARE THIN-WALLED STEEL TUBULAR STUB COLUMNS WITH STEEL BAR STIFFENERS

摘要：

Finite element software ABAUQS 6.5 was used to simulate the axial compressive loading behaviors of concrete-filled square thin-walled steel tubular stub columns with inside steel bar stiffeners,outside steel bar stiffeners,inner reinforcing bar cage. The axial load-displacement curves and the failure mode from finite element analysis agreed with corresponding experimental results well. Through numerical calculation,it studied the longitudinal stress distribution of concrete in the largest section when the concrete-filled square thin-walled steel tubular stub columns with steel bar stiffeners and the plain concrete column with the same size reached the ultimate load. It is found that the longitudinal stress of the core concrete in the concrete-filled square thin-walled steel tubular stub columns with steel bar stiffeners had improved,Steel bar stiffeners can effectively improve ultimate bearing capacity of concrete-filled square thinwalled steel tubular stub columns.

关键词： Steel bar stiffeners Concrete-filled square thin-walled steel tubular stub columns Finite element analysis Failure morphology Ultimate bearing capacity

作者: Cheng-Xiang Xu Jian-Quan Chen Shu-Zhen Xu

作者单位: Shool of Unban Construction,Yangtze University,Jinzhou 434023,P.R. China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 498-502

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）