(1 中国地震局地球物理研究所， 北京 100081；2 河北建筑工程学院土木工程学院， 张家口 075000；3 河北省土木工程诊断改造与抗灾重点实验室， 张家口 075000)

［摘要］通过对配置HRB600级钢筋混凝土偏心受压柱对称配筋进行研究，理论上计算了界限相对受压区高度ξb，且因HRB600级钢筋抗拉和抗压强度设计值不相等，故以现有《混凝土结构设计规范》（GB 50010—2010）为基础，推导了对称配筋大小偏心受压的基本公式及偏心受压类型的判别公式，并给出其相应的截面设计计算方法。最后推导了HRB600级钢筋对应的N-M相关曲线计算公式，并比较分析了不同配筋率、不同强度等级钢筋的NM相关曲线。研究结论可为后期《混凝土结构设计规范》（GB 50010—2010）的修订提供参考，也可为600MPa级热轧带肋钢筋的推广提供理论依据。 

［关键词］HRB600级钢筋；偏心受压；对称配筋；N-M相关曲线 

中图分类号：TU318+.1 文献标识码：A文章编号：1002-848X(2021)16-0116-05

Study on symmetric reinforcement calculation of rectangular section column with HRB600 reinforcing bars under eccentric compression 

ZHANG  Bo1,2,  QIU  Lijun2,3,  CHEN  Xueliang1,  ZHOU  Zhanxue2,3,  LIU  Bo2 

(1 Institute of Geophysics, China Earthquake Administration, Beijing 100081， China；2 School of Civil Engineering, Hebei University of Architecture,  Zhangjiakou 075000， China；3 Hebei Key Laboratory of Diagnosis, Reconstruction and Anti-disaster of Civil Engineering,  Zhangjiakou 075000， China) 

Abstract: By studying the symmetrical reinforcement of concrete column with HRB600 steel bars under eccentric compression, the depth of the limited relative compression zone ξb was calculated theoretically. And because the tensile and compressive strength design values of HRB600 steel bar are not equal, the basic formula of symmetrical reinforcement under large or small eccentric compression and the discriminant formula of eccentric compression types were derived and the corresponding section design calculation methods were given based on the existing code for design of concrete structures (GB 50010—2010). Finally, the N-M interaction curve formula of HRB600 steel bar was deduced, and the N-M interaction curves of different reinforcement ratio and different intensity level were compared and analyzed. The research conclusions can not only provide reference for the later revision of code for design of concrete structures (GB 50010—2010), but also provide a theoretical basis for the promotion of HRB600 steel bar. 

Keywords:HRB600 steel bar； eccentric compression； symmetric reinforcement； N-M interaction curve

*国家自然科学基金（51978633），国家重点研发计划（2019YFC1509403），中国地震局地球物理研究所基本科研业务专项（DQJB21Z15），张家口市科技计划项目（2021028D），河北省高校百名优秀创新人才支持计划资助（SL-RC2017033）。

 作者简介：张波，博士研究生，讲师，Email:xiaobotd@126.com； 通信作者：邱利军，硕士，讲师，Email:qiuljun@126.com。