摘要
应用第四强度理论和三向应力状态下的混凝土破坏准则推导出了约束钢管混凝土柱轴心受压的极限承载力计算公式,并分析了工作机理。算例表明,在钢管混凝土柱的外围设置横向约束件可以提高钢管混凝土柱的承载力。推导出的计算公式为约束钢管混凝土柱的设计提供了理论依据。
Based on the traditional concrete filled steel tubular(CFT) column systems,an innovative CFT column,named as confined concrete filled steel tubular column(CCFT)is put forward.By using confinement around the CFT column,the CCFT column can acquire improved bearing capacity and the ductility under earthquake.The analytical expression of the load capability is deduced when the confined concrete filled steel tube is suffered from axial compression by the fourth strength theorem and failure parameter equation of concrete supported three directions compression.The working principle is analyzed and providing dependable theoretical foundation for design of CCFT.
出处
《工业建筑》
CSCD
北大核心
2007年第z1期483-486,共4页
Industrial Construction
基金
教育部优秀青年教师资助计划项目(教人司[2003]355号)
关键词
FRP约束钢管混凝土柱
第四强度理论
极限承载力
FRP confined concrete filled steel tube column the fourth strength theorem ultimate bearing capacity
