考虑钢管初应力的圆锥形中空夹层钢管混凝土柱轴压性能研究

作者：张丽丽¹,贾志路²,王文达³,田雪梅¹

作者简介：

张丽丽,助教,E⁃mail:2309747401@ qq. com

作者单位：

1. 山西工商学院建筑工程学院,山西太原 030062; 2. 中北大学环境与安全工程学院,山西太原 030051; 3. 兰州理工大学土木工程学院,甘肃兰州 730050

基金项目：

∗国家自然科学基金(52168021);山西省基础研究计划(202303021212205);山西省高等学校科技创新项目(2023L492)

摘要：

为研究考虑内外钢管初应力对大空心率圆锥形中空夹层钢管混凝土柱轴压性能的影响,采用 ABAQUS 有限元软件建立数值模型,在模型验证的基础上,对轴压短柱和长柱全过程受力机理进行了分析,研究钢管初应力的存在对圆锥形中空夹层钢管混凝土构件工作机理的影响,得到构件荷载⁃变形曲线、各部件应力分布及不同部件之间接触应力的发展规律. 在此基础上,分析了空心率、初应力系数、长细比、锥度和外钢管径厚比等对承载力影响系数的影响规律. 结果表明:考虑钢管初应力后对短柱的轴压承载力影响较小,最大下降 5%左右;但长柱承载力显著下降,初应力影响导致钢管提前屈服. 影响承载力影响系数的主要参数为初应力系数、长细比和空心率. 给出了圆锥形中空夹层钢管混凝土柱轴压的承载力计算方法.

关键词：钢管混凝土;初应力;有限元分析;承载力;计算

English：

In order to study the influence of the initial stress of the inner and outer steel tubes on theaxial compression performance of the large hollow ratio tapered concrete⁃filled double skin steel tubular(CFDST) members, the numerical model was established by ABAQUS finite element software. On thebasis of model verification, the whole process stress mechanism of the axial compression short column andthe long column was analyzed. The influence of the initial stress of the steel tube on the workingmechanism of CFDST member was studied, and the load⁃deformation curve of the member, the stressdistribution of each component and the development law of the contact stress between differentcomponents were obtained. On this basis, the influence of hollow ratio, initial stress coefficient,slenderness ratio, taper and diameter⁃thickness ratio of outer steel tube on the bearing capacity isanalyzed. The results show that the initial stress of the steel tube has little effect on the axial compressionbearing capacity of the short column, and the maximum decrease is about 5%. However, the bearingcapacity of long columns decreases significantly, and the influence of initial stress leads to the early yieldof steel tubes. The main parameters affecting the influence coefficient of bearing capacity are initial stresscoefficient, slenderness ratio and hollow ratio. The calculation method of bearing capacity of CFDSTcolumn under axial compression is given.

[1]	ZHAO X L,GRZEBIETA R. Strength and ductility of concretefilled double skin (SHS inner and SHS outer) tubes[ J]. Thin⁃walled structures,2002,40(2):199⁃213.
[2]	YUAN W B,YANG J J. Experimental and numerical studies ofshort concrete⁃filled double skin composite tube columns underaxially compressive loads [ J ]. Journal of constructional steelresearch,2013,80:23⁃31.
[3]	邓然,周绪红,王宇航,等. 圆台形大空心率中空夹层钢管混凝土构件压扭性能研究[ J]. 建筑结构学报,2024,45( 3):136⁃147.DENG R, ZHOU X H, WANG Y H, et al. Compression⁃torsionbehavior of tapered concrete⁃filled double⁃skin steel tubularmembers with large hollow ratio [ J ]. Journal of buildingstructures, 2024, 45(3): 136⁃147.
[4]	史艳莉,张超峰,鲜威,等. 圆锥形中空夹层钢管混凝土偏压构件受力性能研究[ J]. 建筑结构学报,2021,42 ( 5):155⁃164,176.SHI Y L, ZHANG C F, XIAN W, et al. Research onmechanical behavior of tapered concrete⁃filled double skin steeltubular members under eccentric compression [ J]. Journal ofbuilding structures, 2021, 42(5): 155⁃164,176.
[5]	DING F X, WANG W J, LU D R, et al. Study on the behaviorof concrete⁃filled square double⁃skin steel tubular stub columnsunder axial loading[J]. Structures, 2020, 23: 665⁃676.
[6]	黄宏,郭晓宇,陈梦成. 圆中空夹层钢管混凝土压扭构件试验研究[J]. 实验力学, 2015, 30(1): 101⁃110.HUANG H, GUO X Y, CHEN M C. Experimental study ofconcrete⁃filled double skin steel tube members (CHS inner andCHS outer) subjected to compression and torsion[J]. Journal ofexperimental mechanics, 2015, 30(1): 101⁃110.
[7]	廖栩,李吉人,王庆利. 轴压荷载下中空夹层钢管混凝土抗扭性能试验研究[J]. 建筑结构,2022,52(6):90⁃96,125.LIAO X, LI J R, WANG Q L. Experimental study on torsionalbehavior of concrete⁃filled double skin steel tubes under axialload[J]. Building structure, 2022, 52(6): 90⁃96,125.
[8]	ZHAO H, WANG R, HOU C C, et al. Performance of circularCFDST members with external stainless steel tube undertransverse impact loading [ J ]. Thin⁃walled structures, 2019,145:106380.
[9]	郭金龙,潘爽,付诗琦. 侧向冲击作用后圆中空夹层钢管混凝土长柱的竖向剩余承载性能研究[ J]. 工程力学, 2025, 42(6): 203⁃215.GUO J L, PAN S, FU S Q. Study on the vertical residualbearing behaviors of circular concrete⁃filled double⁃skin steeltubular long columns after lateral impact [ J ]. Engineeringmechanics, 2025, 42(6): 203⁃215.
[10]	LI W,WANG T,HAN L H. Seismic performance of concrete⁃filleddouble⁃skin steel tubes after exposure to fire: experiments [ J].Journal of constructional steel research,2019,154:209⁃223.
[11]	王文达,张丽丽,纪孙航,等. 中空夹层钢管混凝土风力机塔架风振性能研究[ J]. 建筑科学与工程学报,2023,40( 2):26⁃39.WANG W D, ZHANG L L, JI S H, et al, Study on windvibration performance of concrete⁃filled double skin steel tubularwind turbine tower [ J ]. Joumal of architecture and civilengineering, 2023, 40(2): 26⁃39.
[12]	LI W,REN Q X,HAN L H,et al. Behaviour of tapered concrete⁃filled double skin steel tubular (CFDST) stub columns[J]. Thin⁃walled structures,2012,57:37⁃48.
[13]	LI W,HAN L H,REN Q X, et al. Behavior and calculation oftapered CFDST columns under eccentric compression[J]. Journalof constructional steel research,2013,83:127⁃136.
[14]	SHI Y L,JI S H,WANG W D,et al. Axial compressive behaviourof tapered CFDST stub columns with large void ratio[ J]. Journalof constructional steel research,2022,191:107206.
[15]	韩林海,尧国皇. 钢管初应力对钢管混凝土压弯构件承载力的影响研究[J]. 土木工程学报,2003,36(4):9⁃18.HAN L H, YAO G H. Effect of initial stress on bearing capacityof concrete⁃filled steel tubular beam⁃columns [ J]. China civilengineering journal,2003, 36(4): 9⁃18.
[16]	PATEL V I,LIANG Q Q,HADI M N S. Behavior of biaxially⁃loaded rectangular concrete⁃filled steel tubular slender beam⁃columns with preload effects[ J]. Thin⁃walled structures,2014,79:166⁃177.
[17]	韩林海. 钢管混凝土结构———理论与实践[M]. 4 版. 北京:科学出版社,2022.HAN L H. Concrete⁃filled steel tubular structures⁃theory andapplication[M]. 4 edition. Beijing: Science Press, 2022.
[18]	贾志路,史艳莉,王文达,等. 钢管初应力对内配型钢的圆钢管混凝土柱受压性能影响[J]. 建筑结构学报,2022,43(6):63⁃74.JIA Z L, SHI Y L, WANG W D, et al. Study on compressiveperformance of steel⁃reinforced concrete⁃filled circular steeltubular members considering preload on steel tubes[ J]. Journalof building structures, 2022, 43(6): 63⁃74.
[19]	LI W, HAN L H, ZHAO X L. Axial strength of concrete⁃filleddouble skin steel tubular (CFDST) columns with preload on steeltubes[J]. Thin⁃walled structures, 2012, 56: 9⁃20.
[20]	JIA Z L, SHI Y L, WANG W D, et al. Compression⁃bendingbehaviour of steel⁃reinforced concrete⁃filled circular steel tubularcolumns with preload[J]. Structures, 2022, 36: 892⁃911.

混凝土 > 2026年 第卷 第10期