【作者】 曹宝珠； 张耀春； 王秋萍； 段文峰；

【Author】 CAO Bao-zhu~(1,2) ZHANG Yao-chun~1 WANG Qiu-ping~1 DUAN Wen-feng~2 (1.Harbin Institute of Technology Harbin 150090,China; 2.Jilin Architectural and Civil Engineering Institute,Changchun 130021,China)

【机构】 哈尔滨工业大学； 吉林建筑工程学院；

【摘要】 通过对14个圆形钢管混凝土短柱的理论分析与试验研究,分析其在单调轴压荷载作用下的受力性能及破坏形态,揭示出了薄壁组合柱与普通(厚壁)钢管混凝土柱不同的破坏机理及内在规律,为该类构件的设计及计算提供了理论依据.更多还原

【Abstract】 In an experimental and analytical study on the mechanical behavior of circular concrete filled steel tube(CFST)stub columns,14 specimens were tested.The diameter to thickness ratio range of CFST was from 50 to 125.And 4 of specimens were filled with light-weight aggregate concrete.The results indicated that mechanical behavior of columns was greatly influenced by diameter and thickness of steel tubes.Thin- walled steel tubes filled with concrete were all found inclined shearing failure.It was different from thick- walled CFST columns which appeared plastic flow failure under ultimate load.Constitutive relationship of con- crete in triaxial compression can be used to explain the phenomena above,and to determine the bearing capac- ity in theory.Thin-walled CFST column were also showed a certain ductility,so it can be used in single or multi story buildings.更多还原