|Table of Contents|

Axial Compression Mechanism of Round-ended Concrete-filled Steel Tubular Stub Short Columns with Binding Bars(PDF)

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

Issue:
2019年05期
Page:
39-51
Research Field:
Publishing date:

Info

Title:
Axial Compression Mechanism of Round-ended Concrete-filled Steel Tubular Stub Short Columns with Binding Bars
Author(s):
REN Zhi-gang;  LIU Chuang;  WANG Dan-dan;  WEI Wei
(School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, Hubei, China)
Keywords:
RCFST column;  binding bar;  constitutive relationship;  axial compression
PACS:
TU398
DOI:
-
Abstract:
Aiming at the problem that the mechanical behavior of round-ended concrete-filled steel tube(RCFST)was more complicated than that of other section concrete-filled steel tube, the section of round-ended concrete-filled steel tubular stub short column was divided into strong and weak constrained part, and the section of RCFST column was divided into rectangular and semi-circular sections. And a new constitutive equation of RCFST column was proposed by using different amendments of concrete constitutive relation. Finally, the recommended formula for the axial compressive bearing capacity of RCFST column was put forward, and the rationality of the formula was verified. The finite element software was used to analyze 57 model components finely. The parameters were studied by changing the diameter of binding bar, concrete strength, distance between binding bars, steel content of section, height-width ratio, etc. The results show that with the increase of steel content of section, diameter of binding bar and density of binding bar, the bearing capacity and ductility of members are improved. Increasing the strength of concrete can improve the bearing capacity of members, but it will lead to a reduction in ductility. When the strength of concrete exceeds 80 MPa, the calculation results are safe and can effectively predict the bearing capacity of members.

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 Lin-hai.Concrete Filled Steel Tubular Structures — Theory and Practice[M].3rd ed.Beijing:Science Press,2016.
[2]HSU H L,YU H L.Seismic Performance of Concrete-filled Tubes with Restrained Plastic Hinge Zones[J].Journal of Constructional Steel Research,2003,59(5):587-608.
[3]LIANG Q Q.Analysis and Design of Steel and Composite Structures[M].Boca Raton:CRC Press,2014.
[4]LIAO F Y,HAN L H,HE S H.Behavior of CFST Short Column and Beam with Initial Concrete Imperfection:Experiments[J].Journal of Constructional Steel Research,2011,67(12):1922-1935.
[5]蔡 健,何振强.带约束拉杆方形钢管混凝土的本构关系[J].工程力学,2006,23(10):145-150.
CAI Jian,HE Zhen-qiang.Constitutive Relationship of Square CFT with Binding Bars[J].Engineering Mechanics,2006,23(10):145-150.
[6]蔡 健,何振强,陈 星.带约束拉杆矩形钢管混凝土短柱轴压性能的试验[J].工业建筑,2007,37(3):75-80.
CAI Jian,HE Zhen-qiang,CHEN Xing.Experimental Study on Behavior of Rectangle CFT Stub Column with Binding Bars Subjected to Axially Loading[J].Industrial Construction,2007,37(3):75-80.
[7]蔡 健,龙跃凌.带约束拉杆方形、矩形钢管混凝土短柱的轴压承载力[J].建筑结构学报,2009,30(1):7-14.
CAI Jian,LONG Yue-ling.Axial Bearing Capacity of Square and Rectangular CFT Stub Columns with Binding Bars[J].Journal of Building Structures,2009,30(1):7-14.
[8]丁发兴,余志武.钢管混凝土短柱力学性能研究——理论分析[J].工程力学,2005,22(1):175-181.
DING Fa-xing,YU Zhi-wu.Theoretical Analysis of Mechanical Properties of Concrete-filled Tubular Steel Stub Columns[J].Engineering Mechanics,2005,22(1):175-181.
[9]何振强,蔡 健,陈 星.带约束拉杆方钢管混凝土短柱轴压性能试验研究[J].建筑结构,2006,36(8):49-53.
HE Zhen-qiang,CAI Jian,CHEN Xing.Investigation of Behavior of Square CFT Stub Columns with Binding Bars Under Axial Loads[J].Building Structure,2006,36(8):49-53.
[10]何振强.带约束拉杆方形钢管混凝土短柱受压性能的研究[D].广州:华南理工大学,2006.
HE Zhen-qiang.Research on Compressive Behavior of Square Concrete-filled Steel Tubular Stub Columns with Binding Bars[D].Guangzhou:South China University of Technology,2006.
[11]黄 宏,张安哥,李 毅,等.带肋方钢管混凝土轴压短柱试验研究及有限元分析[J].建筑结构学报,2011,32(2):75-82.
HUANG Hong,ZHANG An-ge,LI Yi,et al.Experimental Research and Finite Element Analysis on Mechanical Performance of Concrete-filled Stiffened Square Steel Tubular Stub Columns Subjected to Axial Compression[J].Journal of Building Structures,2011,32(2):75-82.
[12]刘鸿亮,蔡 健.带约束拉杆方形钢管混凝土轴压短柱的工作机理[J].华南理工大学学报:自然科学版,2013,41(10):117-125.
LIU Hong-liang,CAI Jian.Mechanical Behavior of Square CFST Stub Columns with Binding Bars Under Axial Compression[J].Journal of South China University of Technology:Natural Science Edition,2013,41(10):117-125.
[13]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 Zhi-bin,CHEN Jing,XIE En-pu,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.
[14]TAO Z,WANG Z B,Yu Q.Finite Element Modelling of Concrete-filled Steel Stub Columns Under Axial Compression[J].Journal of Constructional Steel Research,2013,89:121-131.
[15]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.
[16]谢恩普,王志滨,林 盛,等.圆端形钢管混凝土轴压短柱的机理分析[J].福州大学学报:自然科学版,2015,43(4):517-522.
XIE En-pu,WANG Zhi-bin,LIN Sheng,et al.Mechanism Analysis on Concrete-filled Round-end Steel Tubular Stub Columns Under Axial Load[J].Journal of Fuzhou University:Natural Science Edition,2015,43(4):517-522.
[17]王静峰,於忠华,沈奇罕,等.圆端形椭圆钢管混凝土受扭性能数值分析及抗扭承载力计算[J].建筑科学与工程学报,2018,35(3):7-15.
WANG Jing-feng,YU Zhong-hua,SHEN Qi-han,et al.Torsional Behavior Numerical Analysis and Torsion Bearing Capacity Calculation of Circular-end Elliptical Concrete-filled Steel Tube[J].Journal of Architecture and Civil Engineering,2018,35(3):7-15.
[18]李德山,池思源,王志滨.圆端形钢管混凝土柱偏压力学性能研究[J].福州大学学报:自然科学版,2016,44(4):538-542.
LI De-shan,CHI Si-yuan,WANG Zhi-bin.Mechanical Behavior of Round-end Concrete-filled Steel Tubular Columns Under Eccentric Load[J].Journal of Fuzhou University:Natural Science Edition,2016,44(4):538-542.
[19]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 Li-xiong,DING Fa-xing,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.
[20]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.

Memo

Memo:
-
Last Update: 2019-09-29