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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

41卷

期数:

2024年01期

页码:

115-127

栏目:

建筑结构

出版日期:

2024-01-20

文章信息/Info

Title:

Formula for axial compressive bearing capacity of generalized round-ended CFST short columns

文章编号:

1673-2049(2024)01-0115-13

作者:

任志刚,何慧峰,李 旗

(武汉理工大学 土木工程与建筑学院,湖北 武汉 430070)

Author(s):

REN Zhigang, HE Huifeng, LI Qi

(School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, Hubei, China)

关键词:

圆端形钢管混凝土;  统一理论;  套箍系数;  轴压承载力公式

Keywords:

round-ended concrete-filled steel tube;  unified theory;  confinement factor;  axial compressive bearing capacity formula

分类号:

TU398

DOI:

10.19815/j.jace.2022.01063

文献标志码:

A

摘要:

为研究圆形、圆端形、变圆心角圆端形和矩形钢管混凝土短柱轴压承载力的统一计算公式,采用两种不同本构关系建立广义圆端形钢管混凝土轴压短柱的ABAQUS有限元模型,利用90个钢管混凝土短柱轴压试验数据与有限元计算结果进行对比,验证了有限元模型的可靠性。通过改变构件的截面形状和材料强度,设置了9组共90个广义圆端形钢管混凝土轴压短柱有限元模型。对有限元计算结果展开参数分析,研究截面平直段高宽比和截面圆心角对钢管混凝土约束效应的影响。基于统一理论和约束分区方法,以截面形状影响系数对套箍系数进行了修正,并在GB 50936—2014推荐的圆形钢管混凝土短柱轴压承载力公式的基础上,建立了广义圆端形钢管混凝土短柱的轴压承载力简化计算公式,最后采用452个广义圆端形钢管混凝土短柱轴压试验数据对公式的准确性进行了验证。结果表明:当材料强度和含钢率一定时,广义圆端形钢管混凝土柱的套箍约束效应随着截面平直段高宽比的增大而减小,随着截面圆心角的增大而增大; 简化公式的计算结果与试验结果吻合良好,适用于圆形、圆端形、变圆心角圆端形及矩形钢管混凝土短柱的轴压承载力计算。

Abstract:

In order to study the unified calculation formula of the axial compressive bearing capacity of circular, round-ended, different central angle round-ended and rectangular CFST short columns, two different constitutive relations were used to establish the ABAQUS finite element model, and the axial compression test data of 90 CFST short columns were compared with the finite element calculation results to verify the reliability of the finite element model. By changing the cross-sectional shape and material strength of the members, 9 groups of 90 generalized round-ended CFST short columns with axial compression finite element models were set up. The parametric analysis of the finite element calculation results was carried out, and the influence of the aspect ratio of the straight section and the central angle on the confinement effect of the CFST was studied. Based on the unified theory and the constraint partition method, the confinement factor was modified by the cross-sectional shape influence coefficient, and on the basis of the axial compressive bearing capacity formula of the circular CFST short column recommended by GB 50936—2014. A simplified calculation formula for the axial compressive bearing capacity of generalized round-ended CFST short columns was established. Finally, the accuracy of the formula was verified by using the axial compression test data of 452 generalized round-ended CFST short columns. The results show that when the material strength and steel content are constant, the hoop restraint effect of the generalized round-ended CFST column decreases with the increase of the aspect ratio of the straight section of the section, and increases with the increase of the central angle of the section. The calculation results of the formula are in good agreement with the test results, and are suitable for the calculation of the axial compressive bearing capacity of the circular, round-ended, different central angle round-ended and rectangular-section CFST short columns.

参考文献/References:

[1] 韩林海.钢管混凝土结构——理论与实践[M].3版.北京:科学出版社,2016.
HAN Linhai.Concrete filled steel tubular structures — theory and practice[M].3rd ed.Beijing:Science Press,2016.
[2]ALMAMOORI A H,NASER F H,DHAHIR M K.Effect of section shape on the behaviour of thin walled steel columns filled with light weight aggregate concrete:experimental investigation[J].Case Studies in Construction Materials,2020,13:e00356.
[3]钟善桐.钢管混凝土结构[M].3版.北京:清华大学出版社,2003.
ZHONG Shantong.The concrete-filled steel tubular structures[M].3rd ed.Beijing:Tsinghua University Press,2003.
[4]钟善桐.钢管混凝土统一理论——研究与应用[M].北京:清华大学出版社,2006.
ZHONG Shantong.Unified theory of concrete filled steel tube:research and application[M].Beijing:Tsinghua University Press,2006.
[5]蔡绍怀.现代钢管混凝土结构[M].北京:人民交通出版社,2003.
CAI Shaohuai.Modern steel tube confined concrete structures[M].Beijing:China Communications Press,2003.
[6]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.
Technical code for concrete filled steel tubular structures:GB 50936—2014[S].Beijing:China Architecture & Building Press,2014.
[7]钢管混凝土结构技术规程:CECS 28:2012[S].北京:中国计划出版社,2012.
Technical specification for concrete-filled steel tubular structures:CECS 28:2012[S].Beijing:China Planning Press,2012.
[8]龙跃凌,蔡 健,黄炎生.矩形钢管混凝土短柱轴压承载力[J].工业建筑,2010,40(7):95-99.
LONG Yueling,CAI Jian,HUANG Yansheng.Ultimate capacity of axially-loaded rectangular CFT stub columns[J].Industrial Construction,2010,40(7):95-99.
[9]王 娟,赵均海,吴 赛,等.基于统一强度理论的矩形钢管混凝土短柱轴压承载力计算[J].建筑科学与工程学报,2011,28(3):88-92.
WANG Juan,ZHAO Junhai,WU Sai,et al.Calculation of axial bearing capacity of rectangular concrete-filled steel tube short column based on twin shear unified strength theory[J].Journal of Architecture and Civil Engineering,2011,28(3):88-92.
[10]谷利雄,丁发兴,付 磊,等.圆端形钢管混凝土轴压短柱受力性能研究[J].中国公路学报,2014,27(1):57-63.
GU Lixiong,DING Faxing,FU Lei,et al.Mechanical behavior of concrete-filled round-ended steel tubular stub columns under axial load[J].China Journal of Highway and Transport,2014,27(1):57-63.
[11]王志滨,陈 靖,谢恩普,等.圆端形钢管混凝土柱轴压性能研究[J].建筑结构学报,2014,35(7):123-130.
WANG Zhibin,CHEN Jing,XIE Enpu,et al.Behavior of concrete-filled round-end steel tubular stub columns under axial compression[J].Journal of Building Structures,2014,35(7):123-130.
[12]DING F X,FU L,YU Z W,et al.Mechanical performances of concrete-filled steel tubular stub columns with round ends under axial loading[J].Thin-walled Structures,2015,97:22-34.
[13]HASSANEIN M F,PATEL V I.Round-ended rectangular concrete-filled steel tubular short columns:FE investigation under axial compression[J].Journal of Constructional Steel Research,2018,140:222-236.
[14]WANG J F,SHEN Q H.Numerical analysis and design of thin-walled RECFST stub columns under axial compression[J].Thin-walled Structures,2018,129:166-182.
[15]PATEL V I.Analysis of uniaxially loaded short round-ended concrete-filled steel tubular beam-columns[J].Engineering Structures,2020,205:110098.
[16]AHMED M,LIANG Q Q.Numerical analysis of thin-walled round-ended concrete-filled steel tubular short columns including local buckling effects[J].Structures,2020,28:181-196.
[17]任志刚,刘 闯,王丹丹,等.圆端形钢管混凝土短柱极限承载力计算方法研究[J].建筑结构,2021,51(7):38-45,37.
REN Zhigang,LIU Chuang,WANG Dandan,et al.Study on calculating method of ultimate bearing capacity of round-ended concrete filled steel tube short columns[J].Building Structure,2021,51(7):38-45,37.
[18]REN Z G,WANG D D,LI P P.Axial compressive behaviour and confinement effect of round-ended rectangular CFST with different central angles[J].Composite Structures,2022,285(1):115193.
[19]任志刚,王高宇,李培鹏.变圆心角圆端形钢管混凝土轴压短柱承载力[J].武汉理工大学学报,2020,42(10):29-36.
REN Zhigang,WANG Gaoyu,LI Peipeng.Study on bearing capacity of concrete-filled round-ended steel tubular stub with variable center angle under axial compression[J].Journal of Wuhan University of Technology,2020,42(10):29-36.
[20]尧国皇.钢管混凝土构件在复杂受力状态下的工作机理研究[D].福州:福州大学,2006.
YAO Guohuang.Research on behaviour of concrete-filled steel tubes subjected to complicated loading states[D].Fuzhou:Fuzhou University,2006.
[21]任志刚,徐圣海,李培鹏,等.圆端形钢管混凝土偏压柱截面优化研究[J].建筑科学与工程学报,2021,38(4):1-12.
REN Zhigang,XU Shenghai,LI Peipeng,et al.Sectional optimization of round-ended rectangular concrete-filled steel tubular columns under eccentric compression[J].Journal of Architecture and Civil Engineering,2021,38(4):1-12.
[22]REN Z G,LI Q,WANG G Y,et al.Eccentric compressive behavior of round-ended rectangular concrete-filled steel tubes with different central angles[J].Materials,2022,15(2):456.
[23]WANG J F,WANG F Q,SHEN Q H.Numerical modelling and design recommendation of axially-loaded thin-walled RCFST slender column[J].Thin-walled Structures,2019,135:210-226.
[24]王丹丹.圆端形钢管混凝土构件轴压性能研究[D].武汉:武汉理工大学,2019.
WANG Dandan.Behavior study on compressive behavior of concrete-filled round-ended steel tubular stub columns[D].Wuhan:Wuhan University of Technology,2019.
[25]张素梅,王玉银.圆钢管高强混凝土轴压短柱的破坏模式[J].土木工程学报,2004,37(9):1-10.
ZHANG Sumei,WANG Yuyin.Failure modes of short columns of high-strength concrete-filled steel tubes[J].China Civil Engineering Journal,2004,37(9):1-10.
[26]丁发兴,付 磊,龚永智,等.方钢管混凝土轴压短柱的力学性能研究[J].深圳大学学报(理工版),2014,31(6):583-592.
DING Faxing,FU Lei,GONG Yongzhi,et al.Behavior of concrete-filled square steel tubular stub columns under axially compressive loading[J].Journal of Shenzhen University(Science and Engineering),2014,31(6):583-592.
[27]钟善桐.钢管混凝土统一理论[J].哈尔滨建筑工程学院学报,1994,27(6):21-27.
ZHONG Shantong.The unified theory of concrete filled steel tube(CFST)[J].Journal of Harbin University of Civil Engineering and Architecture,1994,27(6):21-27.
[28]YU M,ZHA X X,YE J Q,et al.A unified formulation for circle and polygon concrete-filled steel tube columns under axial compression[J].Engineering Structures,2013,49:1-10.
[29]MANDER J B,PRIESTLEY M J N,PARK R.Theoretical stress-strain model for confined concrete[J].Journal of Structural Engineering,1988,114(8):1804-1826.
[30]LIN S Q,ZHAO Y G,LU Z H,et al.Unified theoretical model for axially loaded concrete-filled steel tube stub columns with different cross-sectional shapes[J].Journal of Structural Engineering,2021,147(10):04021159
[31]韩林海.钢管高强混凝土轴压力学性能的理论分析与试验研究[J].工业建筑,1997,27(11):39-44,13.
HAN Linhai.Theoretical analyses and experimental researches for the behaviors of high strength concrete filled steel tubes subjected to axial compression[J].Industrial Construction,1997,27(11):39-44,13.
[32]贺 锋,周绪红,唐昌辉.钢管高强混凝土轴压短柱承载力性能的试验研究[J].工程力学,2000,17(4):61-66.
HE Feng,ZHOU Xuhong,TANG Changhui.Experimental research on the bearing behavior of high-strength-concrete-filled steel tube under axial compression[J].Engineering Mechanics,2000,17(4):61-66.
[33]张风杰,夏军武,常鸿飞,等.薄壁圆钢管混凝土柱轴压极限承载力分析[J].混凝土,2015(7):18-21.
ZHANG Fengjie,XIA Junwu,CHANG Hongfei,et al.Ultimate strength analysis to thin-walled circular concrete-filled steel tube column under axial compression[J].Concrete,2015(7):18-21.
[34]王力尚,钱稼茹.钢管高强混凝土柱轴向受压承载力试验研究[J].建筑结构,2003,33(7):46-49.
WANG Lishang,QIAN Jiaru.Experimental study of bearing capacity of steel tube confined high-strength concrete columns under axial loads[J].Building Structure,2003,33(7):46-49.
[35]王 战.薄壁圆钢管混凝土构件轴压力学性能试验研究[D].哈尔滨:哈尔滨工业大学,2016.
WANG Zhan.Experimental research on mechanical property of circular concrete-filled thin-walled steel tubular column under axial load[D].Harbin:Harbin Institute of Technology,2016.
[36]陈 鹏,王玉银,刘昌永,等.圆钢管混凝土轴压性能尺寸效应试验研究[J].建筑结构学报,2017,38(增1):249-257.
CHEN Peng,WANG Yuyin,LIU Changyong,et al.Experimental study on size effect of circular concrete-filled steel tubular columns subjected to axial compression[J].Journal of Building Structures,2017,38(S1):249-257.
[37]张耀春,王秋萍,毛小勇,等.薄壁钢管混凝土短柱轴压力学性能试验研究[J].建筑结构,2005,35(1):22-27.
ZHANG Yaochun,WANG Qiuping,MAO Xiaoyong,et al.Research on mechanics behavior of stub-column of concrete-filled thin-walled steel tube under axial load[J].Building Structure,2005,35(1):22-27.
[38]余志武,丁发兴,林 松.钢管高性能混凝土短柱受力性能研究[J].建筑结构学报,2002,23(2):41-47.
YU Zhiwu,DING Faxing,LIN Song.Researches on behavior of high-performance concrete filled tubular steel short columns[J].Journal of Building Structures,2002,23(2):41-47.
[39]SAKINO K,NAKAHARA H,MORINO S,et al.Behavior of centrally loaded concrete-filled steel-tube short columns[J].Journal of Structural Engineering,2004,130(2):180-188.
[40]HAN L H,YAO G H.Experimental behaviour of thin-walled hollow structural steel(HSS)columns filled with self-consolidating concrete(SCC)[J].Thin-walled Structures,2004,42(9):1357-1377.
[41]刘 闯.带约束拉杆圆端形钢管混凝土短柱轴压性能研究[D].武汉:武汉理工大学,2020.
LIU Chuang.Axial compression behavior of round-ended concrete filled steel tubular short columns with binding bars[D].Wuhan:Wuhan University of Technology,2020.
[42]PIQUER A,IBANEZ C,HERNANDEZ-FIGUEIRIDO D.Structural response of concrete-filled round-ended stub columns subjected to eccentric loads[J].Engineering Structures,2019,184:318-328.
[43]丁发兴,傅 强,方常靖.圆端形耐候钢管混凝土轴压短柱力学性能研究[J].铁道工程学报,2017,34(11):33-38.
DING Faxing,FU Qiang,FANG Changjing.Research on the mechanical behavior of concrete-filled round-ended weathering steel tubular stub columns under axially compressive loading[J].Journal of Railway Engineering Society,2017,34(11):33-38.
[44]张忠杰,周新刚,宋振宇,等.矩形薄壁钢管混凝土短柱轴心受压性能试验研究[J].烟台大学学报(自然科学与工程版),2020,33(2):218-224.
ZHANG Zhongjie,ZHOU Xingang,SONG Zhenyu,et al.Experimental study on axially compressive behavior of rectangular concrete-filled thin-walled steel tube short column[J].Journal of Yantai University(Natural Science and Engineering Edition),2020,33(2):218-224.
[45]蒋 涛,沈之容,余志伟.矩形钢管混凝土轴压短柱承载力计算[J].特种结构,2002,19(2):4-6.
JIANG Tao,SHEN Zhirong,YU Zhiwei.Calculating analysis of the load capacity of steel hollow rectangle short columns filled with plain concrete under axial load[J].Special Structures,2002,19(2):4-6.
[46]高金良,姚民乐,詹 锋.矩形钢管混凝土短柱轴心受压性能研究[J].嘉兴学院学报,2005,17(6):23-26.
GAO Jinliang,YAO Minle,ZHAN Feng.Research on the behavior of axially loaded short column of concrete filled rectangular steel tubes[J].Journal of Jia-xing University,2005,17(6):23-26.
[47]王 蕾,江 雪.矩形钢管混凝土短柱受压承载力计算[J].桂林工学院学报,2003,23(4):441-444.
WANG Lei,JIANG Xue.Calculation of load capacities for short concrete-filled steel-tube columns with rectangular section[J].Journal of Guilin Institute of Technology,2003,23(4):441-444.
[48]吕西林,余 勇,陈以一,等.轴心受压方钢管混凝土短柱的性能研究:I试验[J].建筑结构,1999,29(10):41-43.
LU Xilin,YU Yong,CHEN Yiyi,et al.Studies on the behavior of concrete-filled rectangular tubular short column:I experiment[J].Building Structure,1999,29(10):41-43.
[49]史义博.矩形钢管混凝土轴压短柱研究[J].山西建筑,2012,38(33):63-65.
SHI Yibo.Research on static axial compression of rectangular steel tube concrete[J].Shanxi Architecture,2012,38(33):63-65.
[50]韩林海,杨有福.矩形钢管混凝土轴心受压构件强度承载力的试验研究[J].土木工程学报,2001,34(4):22-31.
HAN Linhai,YANG Youfu.Study on axial bearing capacity of concrete-filled-steel-tube columns with rectangular section[J].China Civil Engineering Journal,2001,34(4):22-31.
[51]陈肇元,朱金铨,吴佩刚.高强混凝土及其应用[M].北京:清华大学出版社,1992.
CHEN Zhaoyuan,ZHU Jinquan,WU Peigang.Highstrength concrete and its application[M].Beijing:Tsinghua University Press,1992.

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备注/Memo

备注/Memo:

收稿日期:2023-01-18
基金项目:国家自然科学基金项目(51778512)
作者简介:任志刚(1974-),男,工学博士,教授,博士生导师,E-mail:whut.ren@163.com。

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更新日期/Last Update: 2024-01-25