Journal of South China University of Technology(Natural Science) >

2022 , Vol. 50 >Issue 11: 82 - 94

DOI: https://doi.org/10.12141/j.issn.1000-565X.210807

Architecture & Civil Engineering

Study on Mechanical Behavior of New Type Middle Joint of CFST Composite Column-Concrete Beam

Expand
  • 1.State Key Laboratory of Subtropical Building Science，South China University of Technology，Guangzhou 510640，Guangdong，China
    2.School of Civil Engineering and Transportation，South China University of Technology，Guangzhou 510640，Guangdong，China
    3.Sino-Singapore International Joint Research Institute，Guangzhou 510640，Guangdong，China
    4.Architecture Design Research Institute，South China University of Technology，Guangzhou 510640，Guangdong，China
凌育洪（1969-），男，博士，教授，主要从事建筑结构抗震设计研究.E-mail:yhling@scut.edu.cn.

Received date: 2021-12-15

  Online published: 2022-04-06

Supported by

the National Nature Science Foundation of China(12172135)

Fold

Abstract

In view of defects in the connection of concrete-filled steel tubular (CFST) composite column to concrete beam joint specified in the current code, this paper proposed a new type of fastener anchorage connection of beam to column joint with ring reinforcement in the column. The longitudinal reinforcement of the beam end of the concrete frame connected ring bar in column in forms of type, L-type and type and the ring bar set outside the steel pipe in the column was used to balance the tensile force from the beam end. Five specimens of concrete-filled steel tubular composite column concrete beam joints were designed for the monotonic static loading tests. The distribution and development of cracks, deformation, failure mode, bearing capacity, ductility of the middle joints and rebar strain development law were studied, and simulation analysis was performed using the ABAQUS software. The results show that ultimate failure modes of specimens with different joint anchorage are similar: the bending failure occurs at the end of beam, and all specimens possess good ductility and deformation ability. The yield of ring bars in columns lags behind the yield of longitudinal bars under tension, and no longitudinal bar slips off central bars during the test. The simulation results are consistent with the test results.

Key words： CFST composite column-concrete beam joints; ring bar; monotonous static loading test; node anchoring method; failure mode; bearing capacity

Cite this article

LING Yuhong, LIAO Haopeng, XU Jinghang, et al . Study on Mechanical Behavior of New Type Middle Joint of CFST Composite Column-Concrete Beam[J]. Journal of South China University of Technology(Natural Science), 2022 , 50(11) : 82 -94 . DOI: 10.12141/j.issn.1000-565X.210807

References

1 聂建国，王宇航，陶慕轩，等 ．钢管混凝土叠合柱-钢筋混凝土梁外加强环节点抗震性能试验研究［J］．建筑结构学报，2012，33（7）：88-97.
1 NIE Jianguo， WANG Yuhang， TAO Muxuan，et al ．Experimental study on seismic behavior of laminated steel tube column-concrete beam joint with outer stiffening ring［J］．Journal of Building Structures，2012，33（07）：88-97.
2 谭文勇 ．钢筋混凝土梁-钢管混凝土叠合柱外加强环式节点受力性能有限元分析［J］.武汉理工大学学报，2016，38（3）：61-65.
2 TAN Wenyong ．FEM analysis of the mechanical behavior of steel reinforced concrete column-RC beam composite joint［J］．Journal of Wuhan University of Technology，2016，38（3）：61-65.
3 周颖，于海燕，钱江，等 ．钢管混凝土叠合柱节点环梁试验研究［J］．建筑结构学报，2015，36（2）：69-78.
3 ZHOU Ying， YU Haiyan， QIAN Jiang，et al ．Experimental study on ring beams of joints of concrete filled steel tubular laminated columns［J］．Journal of Building Structures．2015，36（2）：69-78.
4 赵剑 ．钢管混凝土叠合柱-钢筋混凝土梁节点滞回性能研究［D］.福州：福州大学，2013.
5 MA D Y， HAN L H， ZHAO X L ．Seismic performance of the concrete-encased CFST column to RC beam joint：Experiment［J］．Journal of Constructional Steel Research，2019，154：134-148.
6 钱炜武 ．钢管混凝土叠合柱-钢梁连接节点抗震性能研究［D］.北京：清华大学，2017.
7 郑稣庭 ．钢管混凝土叠合柱-钢梁连接节点滞回性能研究［D］.福州：福州大学，2013.
8 LIAO F Y， HAN L H， TAO Z ．Behaviour of composite joints with concrete encased CFST columns under cyclic loading：Experiments［J］．Engineering Structures，2014，59：745-764.
9 周颖，于海燕，钱江，等 ．钢管混凝土叠合柱节点环梁受弯承载力计算方法［J］．建筑结构学报，2015，36（2）：79-86.
9 ZHOU Ying， YU Haiyan， QIAN Jiang，et al.Moment capacity calculation method on ring beams of joints of concrete filled steel tubular laminated columns［J］．Journal of Building Structures，2015，36（2）：79-86.
10 廖飞宇，赵剑，尧国皇，等 ．钢管混凝土叠合柱-混凝土梁节点滞回性能的有限元分析［J］．建筑钢结构进展，2019，21（5）：1-12，19.
10 LIAO Feiyu， ZHAO Jian， YAO Guohuang，et al ．Hysteretic Performance finite element analysis of concrete encased CFST column to concrete beam joints under cyclic loading［J］．Progress of Building Steel Structure，2019，21（5）：1-12，19.
11 马丹阳 ．钢管混凝土加劲混合柱-RC梁连接节点抗震性能研究［D］北京：清华大学，2019.
12 聂建国，王宇航，陶慕轩，等 ．钢管混凝土叠合柱-钢筋混凝土梁外加强环节点抗震性能试验研究［J］.建筑结构学报，2012，33（7）：88-97.
12 NIE Jianguo， WANG Yuhang， TAO Muxuan，et al ．Experimental study on seismic behavior of laminated steel tube column-concrete beam joint with outer stiffening ring［J］．Journal of Building Structures，2012，33（7）：88-97.
13 陈文浩 ．钢管混凝土组合柱-钢筋混凝土梁节点的力学性能研究［D］．绵阳：西南科技大学，2018.
14 李宁波，万怡秀，吴昭华，等 ．RC梁-核心区钢管壁开洞组合柱节点试验［J］．哈尔滨工业大学学报，2013，45（12）：63-69.
14 LI Ningbo， WAN Yixiu， WU Zhaohua，et al ．Experimental study on connections of RC beam-composite column with openings on steel tube［J］．Journal of Harbin Institute of Technology，2013，45（12）：63-69.
15 程文瀼，高仲学，苏毅，等 ．钢骨混凝土柱框架节点的试验研究［J］.建筑结构学报，2002，23（2）：36-40.
15 CHENG Wenrang， GAO Zhongxue， SU Yi，et al ．Experimental study of frame joints with steel reinforced concrete column［J］．Journal of Building Structures，2002，23（2）：36-40.
16 凌育洪，温新贵，郑文丽，等 ．新型叠合柱-混凝土梁边节点的受力性能试验研究［J］．华南理工大学学报（自然科学版），2022，50（1）：38-49.
16 LING Yuhong， WEN Xinggui， ZHENG Wenli，et al ．Experimental study on mechanical behavior of new type side joint of CFST composite column-concrete beam［J］．Journal of South China University of Technology（Natural Science Edition），2022，50（1）：38-49.
Options
Outlines

/

〈 〉