Steel and Composite Structures

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

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

  • Ding, Fa-xing (School of Civil Engineering, Central South University) ;
  • Pan, Zhi-cheng (School of Civil Engineering, Central South University) ;
  • Liu, Peng (School of Civil Engineering, Central South University) ;
  • Huang, Shi-jian (School of Civil Engineering, Central South University) ;
  • Luo, Liang (School of Civil Engineering and Architecture, Nanchang Hangkong University) ;
  • Zhang, Tao (School of Civil Architecture, Zhengzhou University of Aeronautics)
  • Received : 2019.05.16
  • Accepted : 2020.07.28
  • Published : 2020.08.25
⟨ Previous Next ⟩

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.

Keywords

Acknowledgement

This research is supported by the National Key Research Program of China, Grant No. 2017YFC0703404, and the National Natural Science Foundation of China, Grant No.51578548. Science Fund for Distinguished Young Scholars of Hunan, Grant No. 2019JJ20029.

References

  1. A. AISC. (2010), "Prequalified connections for special and intermediate steel moment frames for seismic applications", American Institute of Steel Construction, Chicago, IL.
  2. Beena, K., Naveen, K. and Shruti, S. (2017), "Behaviour of bolted connections in concrete-filled steel tubular beam-column joints", Steel Compos. Struct., 25(4), 443-456. https://doi.org/10.12989/scs.2017.25.4.443.
  3. D'Aniello, M., Tartaglia, R. Costanzo, S. and Landolfo, R. (2017), "Seismic design of extended stiffened end-plate joints in the framework of Eurocodes", J. Constr Steel Res., 128, 512-527. https://doi.org/10.1016/j.jcsr.2016.09.017.
  4. Da Silva, L.S., de Lima, L.R., da SVellasco, P.C.G. and de Andrade, S.A. (2004). "Behaviour of flush end-plate beam-to-column joints under bending and axial force", Steel Compos. Struct., 4(2), 77-94. https://doi.org/10.12989/scs.2004.4.2.077.
  5. Dessouki, A.K., Youssef, A.H. and Ibrahim, M.M. (2013), "Behavior of I-beam bolted extended end-plate moment connections", Ain. Shams. Eng. Jour., 4(4), 685-699. https://doi.org/10.1016/j.asej.2013.03.004.
  6. Ding, F.X., Yin, G.A., Jiang, L.Z. and Bai, Y. (2018), "Composite frame of circular CFST column to steel-concrete composite beam under lateral cyclic loading", Thin-Wall. Struct., 122 (1), 137-146. https://doi.org/10.1016/j.tws.2017.10.022.
  7. Ding, F.X., Yin, G.A., Wang, L.P., Hu, D. and Chen, G.Q. (2017), "Seismic performance of a non-through-core concrete between concrete-filled steel tubular columns and reinforced concrete beams", Thin-Wall. Struct., 110(1), 14-26. https://doi.org/10.1016/j.tws.2016.10.014.
  8. Ding, F.X., Yin, G.A., Wang, H. B., Wang, L. and Guo, Q. (2017), "Behavior of headed shear stud connectors subjected to cyclic loading", Steel Compos. Struct., 25(6), 705-716. https://doi.org/10.12989/scs.2017.25.6.705.
  9. Ding, F.X., Luo, L. Zhu, J. Wang, L. and Yu, Z.W. (2018), "Mechanical behavior of stirrup-confined rectangular CFT stub columns under axial compression", Thin-Wall. Struct., 124, 136-150. https://doi.org/10.1016/j.tws.2017.12.007.
  10. Ding, F.X., Ying, X.Y. Zhou, L.C. and Yu, Z.W. (2011a), "Unified calculation method and its application in determining the uniaxial mechanical properties of concrete", Front. Archit. Civ Eng. China., 5(3), 381-393. https://doi.org/10.1007/s11709-011-0118-6.
  11. Eurocode 3 (1998), ENV - 1993-1-1:1992/A2, Annex J, Design of Steel Structures - Joints in Building Frames.CEN, European Committee for Standardisation, Document CEN/TC 250/SC 3, Brussels.
  12. Eurocode 3 (2003), prEN 1993-1-8: 2003, Part 1.8: Design of Joints, Eurocode 3: Design of Steel Structures, Stage 49 draft., 5 May 2003. CEN, European Committee for Standardisation, Brussels.
  13. FEMA-350. (2000), "Recommended Seismic Design Criteria for New Steel Moment-frame Buildings, SAC Joint Venture, Federal Emergency Management Agency, Washington D.C.
  14. Guo, B., Gu, Q. and Liu, F. (2006), "Experimental behavior of stiffened and unstiffened end-plate connections under cyclic loading", J. Struct. Eng., 132(9), 1352-1357. https://doi.org/10.1061/(asce)0733-9445(2006)132:9(1352)
  15. Korol, R.M., Ghobarah, A. and Mourad, S. (1993), "Blind Bolting W-Shape Beams to HSS Columns", J. Struct. Eng., 119(12), 3463-3481. https://doi.org/10.1061/(ASCE)0733- 9445(1993)119:12(3463).
  16. Ma, H.W., Jiang, WS. and Cho, CD. (2011), "Experimental study on two types of new beam-to-column connections", Steel Compos. Struct., 11(4), 291-305. https://doi.org/10.12989/scs.2011.11.4.291
  17. Morrison, M., Quayyum, S. and Hassan, T. (2017), "Performance enhancement of eight bolt extended end-plate moment connections under simulated seismic loading", Eng. Struct., 151, 444-458. https://doi.org/10.1016/j.engstruct.2017.08.040.
  18. Mourad, S., Ghobarah, A. and Korol, R.M. (1995), "Dynamic response of hollow section frames with bolted moment connections", Eng. Struct., 17(10), 737-748. https://doi.org/10.1016/0141-0296(95)00002-O.
  19. Murray, T.M. Sumner, E.A. AISC design guide series 4. (2003), "Extended end-plate moment connections", in: A.I.o.S. Construction (Ed.), Chicago.
  20. Tao, Z., Li, W. Shi, B.L. and Han, L.H. (2017), "Behaviour of bolted end-plate connections to concrete-filled steel columns", J. Constr Steel Res., 134, 194-208. https://doi.org/10.1016/j.jcsr.2017.04.002.
  21. Tartaglia, R., D'Aniello, M. Rassati, G.A. Swanson, J.A. and Landolfo, R. (2018), "Full strength extended stiffened end-plate joints: AISC vs recent European design criteria", Eng. Struct., 159, 155-171. https://doi.org/10.1016/j.engstruct.2017.12.053.
  22. Tartaglia, R., D'Aniello, M. Zimbru, M. and Landolfo, R. (2018), "Finite element simulations on the ultimate response of extended stiffened end-plate joints", Steel Compos. Struct., 27(6), 727-745. https://doi.org/10.12989/scs.2018.27.6.727.
  23. Thai, H.T., Uy, B. and Aslani, F. (2017), "Behaviour of bolted endplate composite joints to square and circular CFST columns", J. Constr. Steel Res., 131, 68-82. https://doi.org/10.1016/j.jcsr.2016.12.022.
  24. Tsai, K.C. and Popov, E.P. (1990), "Cyclic behavior of end-plate moment connections", J. Struct. Eng., 116(11), 2917-2930. https://doi.org/10.1061/(ASCE)0733-9445(1990)116:11(2917).
  25. Wang, J.F. and Spencer Jr., B.F. (2013), "Experimental and analytical behavior of blind bolted moment connections", J. Constr. Steel Res., 82, 33-47. https://doi.org/10.1016/j.jcsr.2012.12.002.
  26. Wang, J.F. and Chen, L.P. (2012), "Experimental investigation of extended end plate joints to concrete-filled steel tubular columns", J. Constr. Steel Res., 79, 56-70. https://doi.org/10.1016/j.jcsr.2012.07.016.
  27. Wang, J.F, Zhang, L. and Spencer Jr., B.F. (2013), "Seismic response of extended end plate joints to concrete-filled steel tubular columns", Eng. Struct., 49, 876-892. https://doi.org/10.1016/j.engstruct.2013.01.001.
  28. Wang, J., Uy, B. and Li, D.X. (2018), "Analysis of demountable steel and composite frames with semi-rigid bolted joints", Steel Compos. Struct., 28(3), 363-380. https://doi.org/10.12989/scs.2018.28.3.363.
  29. Wang, P., Pan, J.R., Wang, Z. and Chen, S.Z. (2018). "Experimental and analytical behavior of stiffened angle joints", Steel Compos. Struct., 26(1), 67-78. https://doi.org/10.12989/scs.2018.26.1.067.
  30. Wang, W., Li, L. Chen, D.B. and Xu, T. (2018), "Progressive collapse behaviour of extended endplate connection to square hollow column via blind Hollo-Bolts", Thin-Wall. Struct., 131, 681-694. https://doi.org/10.1016/j.tws.2018.07.043.
  31. Wang, W., Li, M.X., Chen, Y.Y. and Jian, X.G. (2017), "Cyclic behavior of endplate connections to tubular columns with novel slip-critical blind bolts", Eng. Struct., 148, 949-962. https://doi.org/10.1016/j.engstruct.2017.07.015.
  32. Wang, J., Zhu, H.M., Uy, B., Patel, V., Aslani, F. and Li, D.X. (2018), "Moment-rotation relationship of hollow-section beam-to-column steel joints with extended end-plates", Steel Compos. Struct., 29(6), 717-734. https://doi.org/10.12989/scs.2018.29.6.717.
  33. Wang, Z.Y. and Wang, Q.Y. (2016), "Yield and ultimate strengths determination of a blind bolted endplate connection to square hollow section column", Eng. Struct., 111, 345-369. https://doi.org/10.1016/j.engstruct.2015.11.058.
  34. Waqas, R., Uy, B. and Thai, H.T. (2019), "Experimental and numerical behaviour of blind bolted flush endplate composite connections", J. Constr. Steel Res., 153, 179-195. https://doi.org/10.1016/j.jcsr.2018.10.012.
  35. Yao, H., Goldsworthy, H. and Gad, E. (2008). "Experimental and numerical investigation of the tensile behavior of blind-bolted T-stub connections to concrete-filled circular columns", J. Struct Eng., 134(2), 198-208. https://doi.org/10.1061/(ASCE)0733-9445(2008)134:2(198).
  36. Suita, K. and Tanaka, T. (2000). "Flexural strength of beam web to square tube column joints", Kou kouzou rombunshuu, 7(26), 51-58.
  37. Yu, Y.J, Chen, Z.H. and Wang, X.D. (2015), "Effect of column flange flexibility on WF-beam to rectangular CFT column connections", J. Constr. Steel Res., 106, 184-197. https://doi.org/10.1016/j.jcsr.2014.12.008.
  38. Yu, Y.J., Wang, X.D. and Chen, Z.H. (2017), "Evaluation on steel cyclic response to strength reducing heat treatment for seismic design application", Constr. Build. Mater., 140, 468-484. https://doi.org/10.1016/j.conbuildmat.2017.02.088.
  39. Zhang, Z., Wang, J., Li, B. and Zhao, C. (2019), "Seismic tests and numerical investigation of blind-bolted moment CFST frames in-filled with thin-walled SPSWs", Thin-Wall. Struct., 134, 347-362. https://doi.org/10.1016/j.tws.2018.10.009.