(1 山西大学土木工程系, 太原 030013; 2 太原理工大学土木工程学院, 太原 030024)

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

中图分类号:TU398. 9 文献标志码:A 文章编号:1002-848X(2022)24-0064-07

DOI:10. 19701 / j. jzjg. 20201494

Study on axial bearing capacity formulas of square steel tube filled with steel-reinforced concrete short columns

ZHU Xiang1, KANG Miao2, WANG Rui2, YIN Yao2

(1 Department of Civil Engineering, Shanxi University, Taiyuan 030013, China; 2 College of civil engineering,Taiyuan University of Technology, Taiyuan 030024, China)

Abstract:To study the behaviors of square steel tube filled with steel-reinforced columns under axial compression, 29groups of experimental data of such type of short columns under axial compression with different parameters were comparedand analyzed based on relevant codes and classical theories, researching the most suitable axial-bearing capacity formula forsteel tube filled with steel-reinforced columns under axial compression. Models of steel tube filled with steel-reinforcedcolumns under axial compression were established by using finite element software ABAQUS, 12 groups of existingexperimental data were verified, to provide the calculation results of 9 groups of square steel tube filled with steel-reinforcedcolumns with larger sizes, which were compared with theoretical results. Finally, the formula based on Code for design ofcomposite structures ( JGJ 138—2016) for calculating the axial bearing capacity of square steel tube filled with steelreinforced short columns were modified, which was verified by finite element and experimental data. The results of themodified theoretical calculation are in good agreement with the simulated and experimental results, which provide reliablereferences for its design in practical engineering.

Keywords:square steel tube filled with steel-reinforced concrete columns; axial bearing capacity; theoretical calculation;finite element analysis

∗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),山西省高等学校科技创新项目(2020L0052),山西省科技厅重点研发计划项目(社会发展方向 201903D311007)。

第一作者:朱翔,博士,副教授,主要从事结构抗冲击、抗连续倒塌及抗震研究,Emai:zhuxiang@ sxu. edu. cn。

[引用本文] 朱翔,康苗,王蕊,等. 方钢管-钢骨混凝土短柱轴压承载力公式研究[ J]. 建筑结构,2022,52(24):64-70. ZHU Xiang,KANG Miao,WANG Rui,et al. Study on axial bearing capacity formulas of square steel tube filled withsteel-reinforced concrete short columns under axial compression[J]. Building Structure,2022,52(24):64-70.