方钢管-钢骨混凝土短柱轴压承载力公式研究
引用文献：
朱翔 康苗 王蕊 尹曜. 方钢管-钢骨混凝土短柱轴压承载力公式研究[J]. 建筑结构，2022，48（24）：64-70.
ZHU Xiang KANG Miao WANG Rui YIN Yao. Study on axial bearing capacity formulas of square steel tube filled with steel-reinforced concrete short columns[J]. Building Structure，2022,48（24）：64-70.
摘要：为研究轴压作用下方钢管-钢骨混凝土短柱的力学性能，基于相关规范和经典理论，对29组不同参数的钢管-钢骨混凝土短柱轴心受压试验数据进行对比分析，研究最为适用于轴心受压钢管-钢骨混凝土短柱的轴压承载力计算公式。在此基础上采用有限元软件ABAQUS建立钢管-钢骨混凝土轴压短柱模型，对12组已有试验数据进行验证，从而补充9组较大截面尺寸的方钢管-钢骨混凝土短柱轴压计算结果，并与理论计算结果进行对比。最后对《组合结构设计规范》(JGJ 138—2016)中基于叠加原理的方钢管-钢骨混凝土短柱轴压承载力计算公式进行了修正，用有限元数据和试验数据进行了验证，修正后的理论计算结果与模拟值和试验值吻合良好，为其在实际工程中的设计提供可靠参考。
关键词：方钢管-钢骨混凝土柱；轴压承载力；理论计算；有限元分析；
基金：国家自然科学基金(51578274)；山西省科技厅应用基础研究计划项目(202103021223022)；山西省科技厅重点研发计划项目(社会发展方向201903D311007)；山西省高等学校科技创新项目(2020L0052)。
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[15] ZHOU X H,YAN B,LIU J P.Behavior of square tubed steel reinforced-concrete (SRC)columns under eccentric compression[J].Thin-Walled Structures,2015,91:129-138.
[16] YANG X,TANG C,CHEN Y,et al.Compressive behavior of steel-reinforced concrete-filled square steel tubular stub columns after exposure to elevated temperature[J].Engineering Structures,2020,204:110048.
[17] 组合结构设计规范：JGJ 138—2016[S].北京：中国建筑工业出版社，2016.
[18] 钢管混凝土结构技术规范：GB 50936—2014[S].北京：中国建筑工业出版社，2014.
[19] 韩林海，宋天诣，周侃.钢-混凝土组合结构抗火设计原理[M].2版.北京：科学出版社，2017.
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[2] 赵大洲，王清湘.钢骨-钢管高强混凝土组合柱力学性能的研究[D].大连：大连理工大学，2003:1-2.
[3] ZHU M C,LIU J X,WANG Q X,et al.Experimental research on square steel tubular columns filled with steel-reinforced self-consolidating high-strength concrete under axial load[J].Engineering Structures,2010,32(8):2278-2286.
[4] CAI J M,PAN J L,WU Y F.Mechanical behavior of steel-reinforced concrete-filled steel tubular (SRCFST)columns under uniaxial compressive loading[J].Thin-Walled Structures,2015,97:1-10.
[5] 杨包生.钢骨-钢管混凝土组合柱受力性能的研究[D].包头：内蒙古科技大学，2006.
[6] FARAJPOURBONAB E,KUTE S Y,INAMDAR V M.Steel-reinforced concrete-filled steel tubular columns under axial and lateral cyclic loading[J].International Journal of Advanced Structural Engineering,2018,10(1):61-72.
[7] WANG W D,JIA Z L,SHI Y L,et al.Performance of steel-reinforced circular concrete-filled steel tubular members under combined compression and torsion[J].Journal of Constructional Steel Research,2020,173:106271.
[8] DING F X,ZHANG T,LIU X M,et al.Behavior of steel-reinforced concrete-filled square steel tubular stub columns under axial loading[J].Thin-Walled Structures,2017,119:737-748.
[9] 肖阿林.钢骨-钢管高性能混凝土轴压组合柱受力性能与设计方法研究[D].长沙：湖南大学，2009:25-53.
[10] 邓远征.钢骨-钢管混凝土轴压短柱承载力和组合刚度研究[D].大连：大连理工大学，2005:12-43.
[11] 尧国皇，孙素文，李秀明.轴心受压型钢-钢管混凝土柱力学性能的研究[J].建筑钢结构进展，2007,9(6):26-32.
[12] 赵同峰，王连广，赵爽.方钢管-钢骨高强混凝土轴压短柱承载力分析[J].东北大学学报(自然科学版),2008,29(10):1502-1504.
[13] XIAN W,WANG W D,WANG R,et al.Dynamic response of steel-reinforced concrete-filled circular steel tubular members under lateral impact loads[J].Thin-Walled Structures,2020,151:106736.
[14] SHI Y L,XIAN W,WANG W D,et al.Mechanical behaviour of circular steel-reinforced concrete-filled steel tubular members under pure bending loads[J].Structures,2020,25:8-23.
[15] ZHOU X H,YAN B,LIU J P.Behavior of square tubed steel reinforced-concrete (SRC)columns under eccentric compression[J].Thin-Walled Structures,2015,91:129-138.
[16] YANG X,TANG C,CHEN Y,et al.Compressive behavior of steel-reinforced concrete-filled square steel tubular stub columns after exposure to elevated temperature[J].Engineering Structures,2020,204:110048.
[17] 组合结构设计规范：JGJ 138—2016[S].北京：中国建筑工业出版社，2016.
[18] 钢管混凝土结构技术规范：GB 50936—2014[S].北京：中国建筑工业出版社，2014.
[19] 韩林海，宋天诣，周侃.钢-混凝土组合结构抗火设计原理[M].2版.北京：科学出版社，2017.
[20] 闻洋，郝铭科.轴压钢骨-钢管混凝土组合柱影响因素分析[J].建筑结构，2010,40(S1):248-250.
Study on axial bearing capacity formulas of square steel tube filled with steel-reinforced concrete short columns
Abstract: To study the behaviors of square steel tube filled with steel-reinforced columns under axial compression, 29 groups of experimental data of such type of short columns under axial compression with different parameters were compared and analyzed based on relevant codes and classical theories, researching the most suitable axial-bearing capacity formula for steel tube filled with steel-reinforced columns under axial compression. Models of steel tube filled with steel-reinforced columns under axial compression were established by using finite element software ABAQUS, 12 groups of existing experimental data were verified, to provide the calculation results of 9 groups of square steel tube filled with steel-reinforced columns with larger sizes, which were compared with theoretical results. Finally, the formula based on Code for design of composite structures(JGJ 138—2016) for calculating the axial bearing capacity of square steel tube filled with steel-reinforced short columns were modified, which was verified by finite element and experimental data. The results of the modified theoretical calculation are in good agreement with the simulated and experimental results, which provide reliable references for its design in practical engineering.
Keywords: square steel tube filled with steel-reinforced concrete columns; axial bearing capacity; theoretical calculation; finite element analysis
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