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Steel and Composite Structures Volume 5, Number 5, October 2005 , pages 375-394 DOI: https://doi.org/10.12989/scs.2005.5.5.375 |
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A new base plate system using deformed reinforcing bars for concrete filled tubular column |
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Yong-Myung Park, Won-Sup Hwang, Tae-Yang Yoon and Min-Oh Hwang
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| Abstract | ||
| An experimental study was conducted to develop a new base plate anchorage system for concrete filled tubular column under an axial load and a moment. The column was connected to a concrete foundation using ordinary deformed reinforcing bars that are installed at the inside and outside of the column. In order to investigate the moment resisting capacity of the system, horizontal cyclic loads are applied until the ultimate condition is reached with the axial load held constant. To derive a design method for moment resisting capacity, the reinforced concrete section approach was investigated with the assumption of strain compatibility. The results by this approach agreeded well with those of experiments when the bearing pressure of confined concrete and tangent modulus of steel bars are assumed appropriately. Also, it was found that the column interaction curve can be used to predict the yield strength of the base plate system. | ||
| Key Words | ||
| column base plate; reinforcing bar anchor; moment resisting capacity; reinforced concrete section method; interaction curve. | ||
| Address | ||
| Yong-Myung Park; Department of Civil Engineering, Pusan National University, 30 Jangjeon-dong, Geumjeong-gu, Busan 609-735, KorearnWon-Sup Hwang; Department of Civil Engineering, Inha University, 253 Yonghyun-dong, Nam-gu, Incheon 402-715, KorearnTae-Yang Yoon and Min-Oh Hwang; Civil Engineering Research Team, Research Institute of Industrial Science and Technology, 79-5 Youngcheon, Dongtan, Hwaseong, Gyeonggi-do, 445-813, Korea | ||