钢管混凝土柱脚的承载性能分析  

Bearing Capacity Analysis of Concrete-filled Steel Tubular Column Foot

作　　者：孟令强[1,2] 李运生[2] 王元清[3] 

机构地区：[1]中铁大桥局集团第四工程有限公司,江苏南京210031 [2]石家庄铁道学院土木工程分院,河北石家庄050043 [3]清华大学结构工程与振动教育部重点实验室,北京100084

出　　处：《石家庄铁道学院学报（自然科学版）》2009年第4期6-11,17,共7页Journal of Shijiazhuang Railway Institute

基　　金：河北省自然科学基金资助项目(E2009000893)

摘　　要：为了研究钢管混凝土柱与钢筋混凝土基础之间的柱脚连接性能,采用ANSYS软件进行了钢管混凝土柱脚在单向加载和低周期反复加载下承载性能的有限元分析,明确了柱脚中性轴的变化规律,给出了单向加载下柱脚的破坏特征,分析了低周反复荷载下该柱脚节点的滞回性能。研究表明:该柱脚节点的工作性能可靠,总体抗震性能良好;随着轴压比的增大其抗震性能表现出先增强后减小的趋势。In order to study the behaviors of connection between concrete filled steel tubular column and reinforced concrete foundation, the bearing capacity of the column foot is analyzed by ANSYS FE models under uniaxial loading and repeated low cycle loading respectively. The change pattern of neutral axis is obtained. The static loading damage characteristics and hysteretic behavior of the tubular foot are analyzed. The analysis shows that the tubular foot is featured with excellent working performance and high seismic behavior. The seismic behavior of the tubular foot firstly increases and then decreases with the axial compression ratio increasing.

关 键 词：钢管混凝土 柱脚 单向加载 反复加载 滞回曲线 

分 类 号：TU392.5[建筑科学—结构工程]