部分包覆钢-混凝土组合柱单向压弯承载力计算方法比较  

Comparison on calculation methods of compression and uniaxial bending bearing capacity of partially-encased composite steel and concrete columns

作　　者：王海 李杰[2] 陈以一[2,3] WANG Hai;LI Jie;CHEN Yiyi(Shanghai Municipal Engineering Design Institute(Group)Co.,Ltd.,Shanghai 200092,China;College of Civil Engineering,Tongji University,Shanghai 200092,China;Sanda University,Shanghai 201209,China)

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海200092 [2]同济大学土木工程学院,上海200092 [3]上海杉达学院,上海201209

出　　处：《建筑结构》2021年第7期7-13,共7页Building Structure

基　　金：科技部重点研发计划项目(2016YFC0701603)。

摘　　要：总结欧洲规范EN 1994-1-1、加拿大规范CSA-S16-09和国内规范《部分包覆钢-混凝土组合结构技术规程》(T/CECS 719—2020)中部分包覆钢-混凝土组合柱(PEC柱)以及《组合结构设计规范》(JGJ 138—2016)和《矩形钢管混凝土结构技术规程》(CECS 159∶2004)中组合柱的单向压弯承载力计算方法,将五种方法得到的轴力-弯矩(N-M)相关曲线计算结果与已有试验数据进行比较。结果表明:规范EN 1994-1-1曲线是各种试验点的下包线,规范EN 1994-1-1和《组合结构设计规范》(JGJ 138—2016)曲线均具有外凸特性;《部分包覆钢-混凝土组合结构技术规程》(T/CECS 719—2020)曲线与规范CSA-S16-09曲线较为接近,且均偏保守;《矩形钢管混凝土结构技术规程》(CECS 159∶2004)曲线为外凸折线,与试验值吻合较好。The compression and uniaxial bending capacity calculation method of partially-encased composite steel and concrete(PEC)columns in European standard EN 1994-1-1,Canadian standard CSA-S16-09 and domestic standard Technical specification for partially-encased composite structures of steel and concrete(T/CECS 719—2020)and composite columns in Code for design of composite structures(JGJ 138—2016)and Technical specification for structures with concrete-filled rectangular steel tube members(CECS 159∶2004)were summarized.The calculation results of the axial force-bending moment(N-M)correlation curve obtained by the five methods were compared with the existing experimental data.The results show that:the curve of the standard EN 1994-1-1 is the under-envelope line of various test points,and both the curves of the standard EN 1994-1-1 and the Code for design of composite structures(JGJ 138—2016)have convex characteristics.The curve of Technical specification for partially-encased composite structures of steel and concrete(T/CECS 719—2020)is relatively close to the curve of standard CSA-S16-09,and both are conservative.The curve of Technical specification for structures with concrete-filled rectangular steel tube members(CECS 159∶2004)is an outward convex broken line,which is in good agreement with the experimental value.

关 键 词：部分包覆钢-混凝土组合柱 单向压弯承载力 轴力-弯矩相关曲线 计算方法比较 

分 类 号：TU398.9[建筑科学—结构工程]