Research on Shear Behavior of Weakened External Diaphragm Connection Between CFST Column and Beam

ZHANG Wuchen; SUN Yiliang; WANG Yamin; SUN Jianying; YIN Shuhao; RONG Bin

doi:10.13204/j.gyjzG21011504

Volume 52 Issue 5

Jul. 2022

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ZHANG Wuchen, SUN Yiliang, WANG Yamin, SUN Jianying, YIN Shuhao, RONG Bin. Research on Shear Behavior of Weakened External Diaphragm Connection Between CFST Column and Beam[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(5): 126-139. doi: 10.13204/j.gyjzG21011504

Citation:

ZHANG Wuchen, SUN Yiliang, WANG Yamin, SUN Jianying, YIN Shuhao, RONG Bin. Research on Shear Behavior of Weakened External Diaphragm Connection Between CFST Column and Beam[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(5): 126-139. doi: 10.13204/j.gyjzG21011504

Citation:

ZHANG Wuchen, SUN Yiliang, WANG Yamin, SUN Jianying, YIN Shuhao, RONG Bin. Research on Shear Behavior of Weakened External Diaphragm Connection Between CFST Column and Beam[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(5): 126-139. doi: 10.13204/j.gyjzG21011504

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Research on Shear Behavior of Weakened External Diaphragm Connection Between CFST Column and Beam

doi: 10.13204/j.gyjzG21011504

1. State Grid HEBEI Economic Research Institute, Shijiazhuang 050021, China;
2. School of Civil Engineering, Tianjin University, Tianjin 300072, China;
3. China Railway Design Group Co., Ltd., Tianjin 300000, China

Received Date: 2021-01-15
Available Online: 2022-07-23
Publish Date: 2022-07-23

Abstract

Abstract

The shear behavior of crucitorn external diaphragm connection between concrete-filled steel tubular (CFST) column and H-shaped beam was investigated under quasi-static loading. Four joint specimens were designed and tested by weakening the thickness of the steel tube in the panel zone. The studied parameters include the thickness of the steel tube in the panel zone, the width of the external diaphragm, and the axial compression ratio. Deformation phenomena mainly occurred in the panel zone, including the bending of steel tube flange and external diaphragm, the crushing of concrete core, the shear deformation, local buckling and cracking of steel tube web. Local buckling and cracking of steel tube webs were main shear failure modes. Numerically and experimentally parametric studies manifested a positive correlation between the shear bearing capacity and the thickness of the steel tube in the panel zone, whereas the width of the external diaphragm and axial conupression ratio showed an insignificant impact on the shear resistance. Based on the experimental phenomena and the evaluation of three existing calculation methods on frame joints, and considering the effects of steel tube flange and extemal diaphragm on shear behavior, a calculation formula on the shear bearing capacity of external diaphragm connection was proposed. The accuracy and applicability of this calculation formula was verified by the test results, and it could provide a reference for external diaphragm connection design.
- shear,
- external diaphragm,
- panel zone,
- test,
- calculation method

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References(24)

References

[1]	中国工程建设标准化协会.矩形钢管混凝土结构技术规程:CECS 159:2004[S].北京:中国计划出版社,2004.
[2]	NAKASHIMA M, INOUE K, TADA M. Classification of damage to steel buildings observed in the 1995 Hyogoken-Nanbu Earthquake[J]. Engineering Structures,1998, 20(s4/5/6):271-281.
[3]	WANG Y D, KOETAKA Y, CHAN I, et al. Cyclic behavior of beam-column joints with various yielding modes[J]. Journal of Constructional Steel Research, 2019, 159:245-259.
[4]	WU L, CHEN Z, RONG B, et al. Panel zone behavior of diaphragm-through connection between concrete-filled steel tubular columns and steel beam[J]. Advances in Structural Engineering, 2016, 19(4):627-641.
[5]	MORINO S, KAWAGUCHI J, YASUZAKI C, et al. Behavior of concrete-filled steel tubular three-dimensional subassemblages[J]. Research Reports of the Faculty of Engineering Mie University, 1993, 16:61-78.
[6]	QIN Y, CHEN Z, WANG X. Experimental investigation of new internal-diaphragm connections to CFT columns under cyclic loading[J]. Journal of Constructional Steel Research, 2014, 98:35-44.
[7]	DU G F, BIE X M, LI Z, et al. Study on constitutive model of shear performance in panel zone of connections composed of CFSSTCs and steel-concrete composite beams with external diaphragm[J]. Engineering Structures,2018, 155:178-191.
[8]	DOUNG P, SASAKI E. Load-deformation characteristics and performance of internal diaphragm connections to box columns[J].Thin-Walled Structures, 2019,143:1-14.
[9]	YU Y, LAN L, CHEN Z, et al. Mechanical and seismic behaviors of bottom-flange-bolted upper-flange-welded through-diaphragm connections[J]. Journal of Constructional Steel Research, 2019, 156:86-95.
[10]	NISHIYAMA I, FUJIMOTO T, FUKUMOTO T, et al. Inelastic force-deformation response of joint shear panels in beam-column moment connections to concrete-filled tubes[J]. Journal of Structural Engineering, 2004, 130(2):244-252.
[11]	FUKUMOTO T, MORITA K. Elastoplastic behavior of panel zone in steel beam-to-concrete filled steel tube column moment connections[J]. Journal of Structural Engineering. 2005,131(12):1841-1853.
[12]	LIU X G, TAO M X, FAN J S, et al. Comparative study of design procedures for CFST-to-steel girder panel zone shear strength[J]. Journal of Constructional Steel Research, 2014, 94(94):114-121.
[13]	聂建国,秦凯.方钢管混凝土柱节点抗剪受力性能的研究[J].建筑结构学报,2008,28(4):8-17.
[14]	聂建国,秦凯.方钢管混凝土柱和钢-混凝土组合梁连接节点的抗震性能试验研究[J].钢结构,2008, 64(10):1178-1191.
[15]	中华人民共和国住房和城乡建设部.钢结构设计规范:GB 50017-2017[S].北京:中国建筑工业出版社,2018.
[16]	中华人民共和国国家质量监督检验检疫总局.金属材料拉伸试验第1部分:室温试验方法:GB/T 228.1-2010[S].北京:中国标准出版社,2011.
[17]	中华人民共和国住房和城乡建设部.建筑抗震试验规程:JGJ/T 101-2015[S].北京:中国建筑工业出版社,2015.
[18]	Architectural Institute of Japan. Recommendations for design and construction of concrete filled steel tubular structures[S]. Tokyo:AIJ, 1987.
[19]	RONG B, YANG Z H, ZHANG R Y, et al. Postbuckling shear capacity of external diaphragm connections of CFST structures[J]. Journal of Structural Engineering., 2019, 145(5).DOI:10.1061/(ASCE) ST.1943-541X.0002325.
[20]	KANATANI H, TABUCHI M, KAMBA T, et al. A study on concrete filled RHS column to H-beam connections fabricated with HT bolts in rigid frames[C]//Composite Construction in Steel&Concrete. Henniker, New Hampshire:1987.
[21]	RONG B, LIU S, YAN J B, et al. Shear behavior of panel zone in through-diaphragm connections to steel tubular columns[J] Thin-Walled Structures, 2018, 122:286-299.
[22]	RONG B, YIN S H. Seismic performance of beam-to-SST column connection with external diaphragm[J]. Steel and Composite Structures, 2020, 37(6):633-647.
[23]	WANG J, GUO L. Experimental and analytical behavior of square CFDST column blind bolted to steel beam connections[J]. International Journal of Steel Structures, 2020, 20:612-635.
[24]	聂建国,徐桂根.方钢管混凝土柱节点的抗剪受力分析[J].清华大学学报(自然科学版), 2009,49(6):798-802.