Influence of stiffeners on the performance of blind-bolt end-plate connections to CFST columns

다국어 초록 (Multilingual Abstract)

The paper aims to investigate the mechanical mechanism and seismic effect of stiffeners in blind bolt endplate connection to CFST column. A precise 3D finite element model with considering the cyclic properties of concrete and steel materials was established, and the efficiency was validated through monotonic and cyclic test data. The deforming pattern and the seismic performance of the unstiffened and stiffened blind bolt endplate connections were investigated. Then a parametric analysis was conducted to analyze the contribution of stiffeners and the joint working behaviors with endplate under cyclic load. The joint stiffness classifications were compared and a supplement stiffness classification method was proposed, and the energy dissipation ability of different class connections were compared and discussed. Results indicated that the main deformation pattern of unstiffened blind bolt endplate connections was the local bending of end plate. The vertical stiffeners can effectively alleviate the local bending deformation of end plate. And influence of stiffeners in thin endplate and thick endplate was different. Based on the stiffness of external diaphragm welded connection, a more detailed rigidity classification was proposed which included the pin, semi-rigid, quasi-rigid and rigid connection. Beam was the main energy dissipation source for rigid connection. For the semi-rigid and quasi-rigid connection, the extended endplate, stiffeners and steel beam would all participate in the energy dissipation.

참고문헌 (Reference)

1 Zhi-Yu Wang, "Yield and ultimate strengths determination of a blind bolted endplate connection to square hollow section column" Elsevier BV 111 : 345-369, 2016

2 Faxing Ding, "Unified calculation method and its application in determining the uniaxial mechanical properties of concrete" Springer Science and Business Media LLC 5 (5): 381-393, 2011

3 Zengde Zhang, "Seismic tests and numerical investigation of blind-bolted moment CFST frames infilled with thin-walled SPSWs" Elsevier BV 134 : 347-362, 2019

4 Jingfeng Wang, "Seismic response of extended end plate joints to concrete-filled steel tubular columns" Elsevier BV 49 : 876-892, 2013

5 Fa-xing Ding, "Seismic performance of a non-through-core concrete between concrete-filled steel tubular columns and reinforced concrete beams" Elsevier BV 110 (110): 14-26, 2017

6 Mario D'Aniello, "Seismic design of extended stiffened end-plate joints in the framework of Eurocodes" Elsevier BV 128 : 512-527, 2017

7 Wei Wang, "Progressive collapse behaviour of extended endplate connection to square hollow column via blind Hollo-Bolts" Elsevier BV 131 : 681-694, 2018

8 A. AISC, "Prequalified connections for special and intermediate steel moment frames for seismic applications"

9 Machel Morrison, "Performance enhancement of eight bolt extended end-plate moment connections under simulated seismic loading" Elsevier BV 151 : 444-458, 2017

10 Jia Wang, "Moment-rotation relationship of hollow-section beam-to-column steel joints with extended end-plates" 국제구조공학회 29 (29): 717-734, 2018

11 Fa-xing Ding, "Mechanical behavior of stirrup-confined rectangular CFT stub columns under axial compression" Elsevier BV 124 : 136-150, 2018

12 Roberto Tartaglia, "Full strength extended stiffened end-plate joints: AISC vs recent European design criteria" Elsevier BV 159 : 155-171, 2018

13 Suita, K., "Flexural strength of beam web to square tube column joints" 7 (7): 51-58, 2000

14 Roberto Tartaglia, "Finite element simulations on the ultimate response of extended stiffened end-plate joints" 국제구조공학회 27 (27): 727-745, 2018

15 "FEMA-350, Recommended Seismic Design Criteria for New Steel Moment-frame Buildings"

16 Hongwei Ma, "Experimental study on two types of newbeam-to-column connections" 국제구조공학회 11 (11): 291-305, 2011

17 Jingfeng Wang, "Experimental investigation of extended end plate joints to concrete-filled steel tubular columns" Elsevier BV 79 : 56-70, 2012

18 Guo, B., "Experimental behavior of stiffened and unstiffened end-plate connections under cyclic loading" 132 (132): 1352-1357, 2006

19 Rumman Waqas, "Experimental and numerical behaviour of blind bolted flush endplate composite connections" Elsevier BV 153 : 179-195, 2019

20 Peng Wang, "Experimental and analytical behavior of stiffened angle joints" 국제구조공학회 26 (26): 67-78, 2018

21 Jingfeng Wang, "Experimental and analytical behavior of blind bolted moment connections" Elsevier BV 82 : 33-47, 2013

22 Huang Yao, "Experimental and Numerical Investigation of the Tensile Behavior of Blind-Bolted T-Stub Connections to Concrete-Filled Circular Columns" American Society of Civil Engineers (ASCE) 134 (134): 198-208, 2008

23 Yujie Yu, "Evaluation on steel cyclic response to strength reducing heat treatment for seismic design application" Elsevier BV 140 : 468-484, 2017

24 "Eurocode 3, prEN 1993-1-8: 2003, Part 1.8: Design of Joints, Eurocode 3: Design of Steel Structures"

25 "Eurocode 3, ENV - 1993-1-1:1992/A2, Annex J, Design of Steel Structures - Joints in Building Frames"

26 Yujie Yu, "Effect of column flange flexibility on WF-beam to rectangular CFT column connections" Elsevier BV 106 : 184-197, 2015

27 S. Mourad, "Dynamic response of hollow section frames with bolted moment connections" Elsevier BV 17 (17): 737-748, 1995

28 Wei Wang, "Cyclic behavior of endplate connections to tubular columns with novel slip-critical blind bolts" Elsevier BV 148 : 949-962, 2017

29 Keh‐Chyuan Tsai, "Cyclic Behavior of End‐Plate Moment Connections" American Society of Civil Engineers (ASCE) 116 (116): 2917-2930, 1990

30 Fa-xing Ding, "Composite frame of circular CFST column to steel-concrete composite beam under lateral cyclic loading" Elsevier BV 122 (122): 137-146, 2018

31 R. M. Korol, "Blind Bolting W‐Shape Beams to HSS Columns" American Society of Civil Engineers (ASCE) 119 (119): 3463-3481, 1993

32 Luís Simões da Silva, "Behaviour of flush end-plate beam-to-column joints under bending and axial force" 국제구조공학회 4 (4): 77-94, 2004

33 Huu-Tai Thai, "Behaviour of bolted endplate composite joints to square and circular CFST columns" Elsevier BV 131 : 68-82, 2017

34 Zhong Tao, "Behaviour of bolted end-plate connections to concrete-filled steel columns" Elsevier BV 134 : 194-208, 2017

35 Kumari Beena, "Behaviour of bolted connections in concrete-filled steel tubular beam-column joints" 국제구조공학회 25 (25): 443-456, 2017

36 Fa-xing Ding, "Behavior of headed shear stud connectors subjected to cyclic loading" 국제구조공학회 25 (25): 705-716, 2017

37 Abdelrahim Khalil Dessouki, "Behavior of I-beam bolted extended end-plate moment connections" Elsevier BV 4 (4): 685-699, 2013

38 Jia Wang, "Analysis of demountable steel and composite frames with semi-rigid bolted joints" 국제구조공학회 28 (28): 363-380, 2018

39 Murray, T.M., "AISC design guide series 4, Extended end-plate moment connections"