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Numerical study of internally reinforced circular CFT column-to-foundation connection according to design variables

  • Kim, Hee-Ju (Construction R&D Department, Korea Agency for infrastructure Technology Advancement) ;
  • Ham, Junsu (Department of Civil Engineering, Inha University) ;
  • Park, Ki-Tae (Structural Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Hwang, Won-Sup (Department of Civil Engineering, Inha University)
  • Received : 2016.01.21
  • Accepted : 2017.01.18
  • Published : 2017.03.20

Abstract

This study intends to improve the structural details of the anchors in the conventional CFT column-to-foundation connection. To that goal, finite element analysis is conducted with various design variables (number and embedded length of deformed bars, number, aspect ratio, height ratio and thickness ratio of ribs) selected based upon the results of loading test and strength evaluation. The finite element analysis is performed using ABAQUS and the analytical results are validated by comparison with the load-displacement curves obtained through loading test applying axial and transverse loads. The behavioral characteristics of the numerical model according to the selected design variables are verified and the corresponding results are evaluated.

Keywords

Acknowledgement

Supported by : INHA UNIVERSITY

References

  1. AISC (2011), Steel Construction Manual; American Institute of Steel Construction.
  2. Ashakul, A. and Khampa, K. (2014), "Effect of plate properties on shear strength of bolt group in single plate connection", Steel Compos. Struct., Int. J., 16(6), 611-637. https://doi.org/10.12989/scs.2014.16.6.611
  3. Chung, J.A. and Matsui, C. (2005), "SRC standards in Japan and comparison of various standards for CFT columns", Int. J. Steel Struct., 5, 315-323.
  4. Dessouki, A.K., Yousef, A.H. and Fawzy, M.M. (2014), "Stiffener configurations of beam to concrete-filled tube column connections", Steel Compos. Struct., Int. J., 17(1), 83-103. https://doi.org/10.12989/scs.2014.17.1.083
  5. Drosopoulos, G.A., Stavroulakis, G.E. and Abdalla, K.M. (2012), "3D Finite element analysis of end - plate steel joints", Steel Compos. Struct., Int. J., 12(2), 93-115.
  6. Hu, H.T., Su, F.C. and Elchalakani, M. (2010), "Finite element analysis of CFT columns subjected to pure bending moment", Steel Compos. Struct., Int. J., 10(5), 415-428. https://doi.org/10.12989/scs.2010.10.5.415
  7. Hwang, W.S., Kim, H.J., Ham, J.S. and Hwang, S.H. (2013), "Study on rib's structural details of double baseplate connection through numerical analysis", J. Korea Inst. Struct. Maint. Insp., 15(2), 45-53. [In Korean]
  8. Kim, H.J., Hu, J.W. and Hwang, W.S. (2015), "Cyclic testing for structural detail improvement of CFT column-foundation connections", Sustainability, 7, 5260-5281. https://doi.org/10.3390/su7055260
  9. Lee, D.Y. and Goel, S.C. (2008), "Exposed column-base plate connections bending about weak axis: 1. numerical parametric study", Int. J. Steel Struct., 8(1), 11-27.
  10. Lee, H.L., Kim, H.J. and Hwang, W.S. (2011), "Behavior of the foundation of concrete filled steel tubular pier", J. Comput. Struct. Eng. Inst. Korea., 24(5), 491-498. [In Korean]
  11. Liu, Y., Malaga-Chuquitaype, C. and Elghazouli, A.Y. (2014), "Behavior of open beam-to-tubular column angle connections under combined loading conditions", Steel Compos. Struct., Int. J., 16(2), 157-185. https://doi.org/10.12989/scs.2014.16.2.157
  12. Nishimura, N. (1997), "A study on improvement in the cyclic plasticity model and introduction of finite element method", Research Report, 07455185. [In Japanese]
  13. Park, Y.M., Hwang, W.S., Yoon, T.Y. and Hwang, M.O. (2005), "A new base plate system using deformed reinforcing bars for concrete filled tubular column", Steel Compos. Struct., Int. J., 5(5), 375-394. https://doi.org/10.12989/scs.2005.5.5.375
  14. Park, K.D., Kim, H.J. and Hwang, W.S. (2012), "Experimental and numerical studies on the confined effect of steel composite circular columns subjected to axial load", Int. J. Steel Struct., 12(2), 253-265. https://doi.org/10.1007/s13296-012-2009-7
  15. Shiming, C. and Huifeng, Z. (2012), "Numerical analysis of the axially loaded concrete filled steel tube columns with debonding separation ate the steel-concrete interface", Steel Compos. Struct., Int. J., 13(3), 277-293. https://doi.org/10.12989/scs.2012.13.3.277
  16. Su, F.C. (2004), "Numerical analysis of concrete filled tubes subjected to pure bending", M.S. Dissertation; Department of Civil Engineering, National Cheng Kung University, Tainan, Taiwan, R.O.C. [In Chinese]

Cited by

  1. Finite Model Analysis and Practical Design Equations of Circular Concrete-Filled Steel Tube Columns Subjected to Compression-Torsion Load vol.14, pp.19, 2017, https://doi.org/10.3390/ma14195564