Numerical Study on the Effect of Concrete Grade on the CFT Circular Column’s Behavior under Axial Load
Concrete-filled tubular (CFT) column improves the structure properties under different load pattern, so that it should be designed under two main load patterns (static and cyclic load) using current design method such as Finite Element Method (FEM) and analytical method (guideline equation). In this research, a CFT column with specific dimensions is modeled by using ABAQUS finite element software; the target of this study is to conduct a pushover analysis and also a hysteresis analysis under cyclic loading. Then, the concrete grade and percentage of column reinforcement were altered using the FEM, and eventually, compared with the results of analytical equations to measure the safety level of analytical equations. For this purpose, the CFT columns with C20, 30, 40 & 50 concrete cores were modeled with and without reinforcement, and the effect of concrete grade on the capacity of column was studied. In addition, MATLAB software was used to obtain beta index and load capacity design for the CFT column. The results demonstrated that the columns designed in accordance with the AISC have a good performance under the cyclic and static loading. The safety level of design equations ranged between 3 and 5, and the columns could resist higher loads (about 2.5-3.5 times) through the design by ABAQUS.
Hassan, Maha M., Hazem M. Ramadan, Mohammed N. Abdel-Mooty, and Sherif A. Mourad. “Behavior of Concentrically Loaded CFT Braces Connections.” Journal of Advanced Research 5, no. 2 (March 2014): 243–252. doi:10.1016/j.jare.2013.03.005.
Wang, Yanlei, Guipeng Chen, Baolin Wan, Hao Lin, and Jin Zhang. “Behavior of Innovative Circular Ice Filled Steel Tubular Stub Columns Under Axial Compression.” Construction and Building Materials 171 (May 2018): 680–689. doi:10.1016/j.conbuildmat.2018.03.208.
Deng, Y., C.Y. Tuan, Q. Zhou, and Y. Xiao. “Flexural Strength Analysis of Non-Post-Tensioned and Post-Tensioned Concrete-Filled Circular Steel Tubes.” Journal of Constructional Steel Research 67, no. 2 (February 2011): 192–202. doi:10.1016/j.jcsr.2010.08.005.
Pan, Jianrong, Peng Wang, Yanjun Zheng, Zhan Wang, and Deming Liu. “An Analytical Study of Square CFT Columns in Bracing Connection Subjected to Axial Loading.” Advances in Civil Engineering 2018 (November 25, 2018): 1–15. doi:10.1155/2018/8618937.
Ellobody, Ehab, Ben Young, and Dennis Lam. “Behaviour of Normal and High Strength Concrete-Filled Compact Steel Tube Circular Stub Columns.” Journal of Constructional Steel Research 62, no. 7 (July 2006): 706–715. doi:10.1016/j.jcsr.2005.11.002.
Gupta, P.K., S.M. Sarda, and M.S. Kumar. “Experimental and Computational Study of Concrete Filled Steel Tubular Columns Under Axial Loads.” Journal of Constructional Steel Research 63, no. 2 (February 2007): 182–193. doi:10.1016/j.jcsr.2006.04.004.
Han, Lin-Hai, Zhong Tao, and Guo-Huang Yao. “Behaviour of Concrete-Filled Steel Tubular Members Subjected to Shear and Constant Axial Compression.” Thin-Walled Structures 46, no. 7–9 (July 2008): 765–780. doi:10.1016/j.tws.2008.01.026.
Kuranovas, Artiomas, Douglas Goode, Audronis Kazimieras Kvedaras, and Shantong Zhong. “Load-Bearing Capacity of Concrete-Filled Steel Columns.” Journal of Civil Engineering and Management 15, no. 1 (March 31, 2009): 21–33. doi:10.3846/1392-3730.2009.15.21-33.
Abedi, K., A. Nabati, H. Afshin, and A. Ferdousi. "Investigation into Behavior of CFT Circular Columns under Long-Term Axial and Cyclic Loadings." Asian Journal of Civil Engineering (BHRC) 16, no. 3 (2015): 322-346.
Yadav, Raghabendra, Baochun Chen, Huihui Yuan, and Zhibin Lian. “Analytical Behavior of CFST Bridge Piers under Cyclic Loading.” Procedia Engineering 173 (2017): 1731–1738. doi:10.1016/j.proeng.2016.12.208.
Lu, Zhao-Hui, Yan-Gang Zhao, Zhi-Wu Yu, and Cheng Chen. “Reliability-Based Assessment of American and European Specifications for Square CFT Stub Columns.” Steel and Composite Structures 19, no. 4 (October 25, 2015): 811–827. doi:10.12989/scs.2015.19.4.811.
Naseri, Farzad, Faezeh Jafari, Ehsan Mohseni, Waiching Tang, Abdosattar Feizbakhsh, and Mohsen Khatibinia. “Experimental Observations and SVM-Based Prediction of Properties of Polypropylene Fibres Reinforced Self-Compacting Composites Incorporating Nano-CuO.” Construction and Building Materials 143 (July 2017): 589–598. doi:10.1016/j.conbuildmat.2017.03.124.
Khotbehsara, Mojdeh Mehrinejad, Bahareh Mehdizadeh Miyandehi, Farzad Naseri, Togay Ozbakkaloglu, Faezeh Jafari, and Ehsan Mohseni. “Effect of SnO 2 , ZrO 2 , and CaCO 3 Nanoparticles on Water Transport and Durability Properties of Self-Compacting Mortar Containing Fly Ash: Experimental Observations and ANFIS Predictions.” Construction and Building Materials 158 (January 2018): 823–834. doi:10.1016/j.conbuildmat.2017.10.067.
Ghanei, Amir, Faezeh Jafari, Mojdeh Mehrinejad Khotbehsara, Ehsan Mohseni, Waiching Tang, and Hongzhi Cui. “Effect of Nano-CuO on Engineering and Microstructure Properties of Fibre-Reinforced Mortars Incorporating Metakaolin: Experimental and Numerical Studies.” Materials 10, no. 10 (October 23, 2017): 1215. doi:10.3390/ma10101215.
Beheshti-Aval, S. B. "Strength evaluation of concrete-filled steel tubes subjected to axial-flexural loading by ACI and AISC-LRFD codes along with three dimensional nonlinear analysis." International Journal of Civil Engineering 10, no. 4 (2012): 280-290.
Akbari, Jalal, Faeze Jafari, and Alireza Jahanpour. "Evaluation of Safety Index and Calibration of Load and Resistance Factors for Reinforced Concrete Beams under Bending, Shear and Torsion Demands." (2017): 49-64.
Akbari, Jala, and Faezeh Jafari. "Calibration of Load and Resistance Factors for Reinforced Concrete." Civil Engineering Infrastructures Journal 51, no. 1 (2018): 217-227. doi:10.7508/CEIJ.2018.01.012.
Guler, Soner, Erol Lale, and Metin Aydogan. “Behaviour of SFRC Filled Steel Tube Columns Under Axial Load.” Volume 9 Number 1 (2013): 14–25. doi:10.18057/ijasc.2013.9.1.2.
ACI Committee. Building code requirements for structural concrete (ACI 318-05) and commentary (ACI 318R-05). American Concrete Institute, (2005). doi:10.14359/12026.
Hsu, L. S., and C.-T. T. Hsu. “Complete Stress — Strain Behaviour of High-Strength Concrete under Compression.” Magazine of Concrete Research 46, no. 169 (December 1994): 301–312. doi:10.1680/macr.19188.8.131.521.
ABAQUS Version 13 (General Purpose Finite Element Analysis Software documentation).
- There are currently no refbacks.
Copyright (c) 2019 Baitollah Badarloo, Faezeh Jafari
This work is licensed under a Creative Commons Attribution 4.0 International License.