Impact of steel-concrete slippage on CFST column load capacity under complex loading conditions
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Từ khóa:
CFST
Combined compression-bending-torsion load
Torsional bearing capacity
Compressive torsional capacity
Numerical analysis
Tóm tắt
Concrete-Filled Steel Tubular (CFST) columns are composite structures consisting of a steel tube and a concrete core, offering high load-bearing capacity, especially under complex loading conditions. When CFST columns are subjected to simultaneous compression, bending and torsion, the interaction between the concrete core and the steel tube plays a crucial role in the distribution of stress and deformation. A key factor that needs to be assessed is the relative slippage between the steel tube and the concrete core, as it directly impacts the load-bearing capacity and stability of the column. This study shows that when compression/bending and torsion are applied simultaneously, the bond between the concrete core and steel tube may weaken, leading to slippage, which in turn reduces the structural system’s load-bearing efficiency. Understanding and accurately assessing the impact of this slippage is essential for improving design, ensuring CFST columns achieve optimal load-bearing performance in practice.
Tài liệu tham khảo
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[1] E. Shanmugam and B. Lakshmi, "State of the art report on steel–concrete composite columns”, Journal of Constructional Steel Research, vol. 57, no. 10, pp. 1041-1080, 2001, doi: https://doi.org/10.1016/S0143-974X(01)00021-9.
[2] -g. Nie, Y.-h. Wang, and J.-s. Fan, "Experimental study on seismic behavior of concrete filled steel tube columns under pure torsion and compression–torsion cyclic load”, Journal of Constructional Steel Research, vol. 79, pp. 115-126, 2012, doi: https://doi.org/10.1016/j.jcsr.2012.07.029.
[3] -X. Ren, L.-H. Han, C. Hou, Z. Tao, and S. Li, "Concrete-encased CFST columns under combined compression and torsion: Experimental investigation”, Journal of Constructional Steel Research, vol. 138, pp. 729-741, 2017, doi: https://doi.org/10.1016/j.jcsr.2017.08.016.
[4] Xing, Q. Shen, J. Wang, and M. Sheng, "Performance and design of oval-ended elliptical CFT columns under combined axial compression-torsion”, Journal of Constructional Steel Research, vol. 172, p. 106148, 2020, doi: https://doi.org/10.1016/j.jcsr.2020.106148.
[5] -H. Wang et al., "Combined compression-bending-torsion behaviour of CFST columns confined by CFRP for marine structures”, Composite Structures, vol. 242, p. 112181, 2020, doi: https://doi.org/10.1016/j.compstruct.2020.112181.
[6] -H. Wang et al., "Coupled ultimate capacity of CFRP confined concrete-filled steel tube columns under compression-bending-torsion load”, Structures, vol. 31, pp. 558-575, 2021, doi: https://doi.org/10.1016/j.istruc.2021.01.086.
[7] -H. Han and Y.-F. An, "Performance of concrete-encased CFST stub columns under axial compression”, Journal of Constructional Steel Research, vol. 93, pp. 62-76, 2014, doi: https://doi.org/10.1016/j.jcsr.2013.10.019.
[8] -X. Ren, L.-H. Han, D. Lam, and C. Hou, "Experiments on special-shaped CFST stub columns under axial compression”, Journal of Constructional Steel Research, vol. 98, pp. 123-133, 2014, doi: https://doi.org/10.1016/j.jcsr.2014.03.002.
[9] Xu, J. Pan, and X. Yang, "Mechanical performance of self-stressing CFST columns under uniaxial compression”, Journal of Building Engineering, vol. 44, p. 103366, 2021, doi: https://doi.org/10.1016/j.jobe.2021.103366.
[10] -F. An and L.-H. Han, "Behaviour of concrete-encased CFST columns under combined compression and bending”, Journal of Constructional Steel Research, vol. 101, pp. 314-330, 2014, doi: https://doi.org/10.1016/j.jcsr.2014.06.002.
[11] -X. Ren, L.-H. Han, C. Hou, and Y.-X. Hua, "Experimental behaviour of tapered CFST columns under combined compression and bending”, Journal of Constructional Steel Research, vol. 128, pp. 39-52, 2017, doi: https://doi.org/10.1016/j.jcsr.2016.08.005.
[12] -F. Yang and L.-H. Han, "Behaviour of concrete filled steel tubular (CFST) stub columns under eccentric partial compression”, Thin-Walled Structures, vol. 49, no. 2, pp. 379-395, 2011/02/01/ 2011, doi: https://doi.org/10.1016/j.tws.2010.09.024.
[13] H. H. Phan, V. I. Patel, H. Al Abadi, and H.-T. Thai, "Analysis and design of eccentrically compressed ultra-high-strength slender CFST circular columns”, Structures, vol. 27, pp. 2481-2499, 2020, doi: https://doi.org/10.1016/j.istruc.2020.08.037.
[14] Deng et al., "Behaviour of tapered concrete-filled double-skin steel tubular columns with large hollow ratio under combined compression-bending-torsion loads: Experiments”, Journal of Building Engineering, vol. 57, p. 104876, 2022, doi: https://doi.org/10.1016/j.jobe.2022.104876.
[15] Lubliner, J. Oliver, S. Oller, and E. Oñate, "A plastic-damage model for concrete”, International Journal of Solids and Structures, vol. 25, no. 3, pp. 299-326, 1989, doi: https://doi.org/10.1016/0020-7683(89)90050-4.
[16] Lee and L. Fenves Gregory, "Plastic-Damage Model for Cyclic Loading of Concrete Structures”, Journal of Engineering Mechanics, vol. 124, no. 8, pp. 892-900, 1998, doi: https://doi.org/10.1061/(ASCE)0733-9399(1998)124:8(892).
[17] L. X. Dung and P. My, "Investigation Into Relative Sliding Effect Between Steel Tube And Concrete Core On Eccentric Compression Resistance Of Concrete Filled Steel Tube Columns”, UD-JST, vol. 1, no. 98, pp. 15-21, 2016, doi: https://jst-ud.vn/jst-ud/article/view/567.
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Nov 30, 2024
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Cách trích dẫn
My, P., D. N. Hieu, L. K. Toan, và D. C. Thuat. “Impact of Steel-Concrete Slippage on CFST Column Load Capacity under Complex Loading Conditions”. Tạp Chí Khoa học Và Công nghệ - Đại học Đà Nẵng, vol 22, số p.h 11B, Tháng Mười-Một 2024, tr 77-84, doi:10.31130/ud-jst.2024.524E.
