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Steel and Composite Structures Volume 23, Number 4, March20 2017 , pages 445-452 DOI: https://doi.org/10.12989/scs.2017.23.4.445 |
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Numerical study of internally reinforced circular CFT column-to-foundation connection according to design variables |
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Hee-Ju Kim, Junsu Ham, Ki-Tae Park and Won-Sup Hwang
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| 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. | ||
| Key Words | ||
| CFT column-to-foundation; finite element analysis; anchors; deformed bars; ribs | ||
| Address | ||
| (1) Hee-Ju Kim: Construction R&D Department, Korea Agency for infrastructure Technology Advancement, 286 simin-Daero, Dongan, Anyang-si, Gyeonggi, 14066, Korea; (2) Junsu Ham, Won-Sup Hwang: Department of Civil Engineering, Inha University, 100 Inha-ro, Nam-gu, Incheon 22212, Republic of Korea; (3) Ki-Tae Park: Structural Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology, 283 Goyangde-ro, Ilsanseo-gu, Goyang-si, Gyeonggi-do, 10223 Republic of Korea. | ||