（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）

［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。

［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

中图分类号：TU398+.9文献标识码：A文章编号：1002-848X(2021)07-0007-07

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

WANG Hai1, LI Jie2, CHEN Yiyi2,3

(1 Shanghai Municipal Engineering Design Institute (Group) Co., Ltd., Shanghai 200092, China; 2 College of Civil Engineering, Tongji University, Shanghai 200092, China; 3 Sanda University, Shanghai 201209, China)

Abstract: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.

Keywords:partially-encased composite steel and concrete column;compression and uniaxial bending capacity;axial force-bending moment interaction curve;design method comparison 

*科技部重点研发计划项目（2016YFC0701603）。

作者简介：王海，硕士，工程师，Email：haiw0508@126.com；通信作者：李杰，博士，副教授，Email：lj@tongji.edu.cn。