Earthquakes and Structures

  • 제20권6호
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  • Pages.669-680
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  • 2021
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Seismic performance and damage evaluation of spiral ribbed thin-walled concrete filled and encased steel tube composite columns

  • Wang, Zhen-shan (State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology) ;
  • Feng, Yong-jian (School of Civil Engineering and Architecture, Xi'an University of Technology) ;
  • Guo, Hong-chao (School of Civil Engineering and Architecture, Xi'an University of Technology) ;
  • Lu, Jun-long (School of Civil Engineering and Architecture, Xi'an University of Technology) ;
  • Tian, Jian-bo (School of Civil Engineering and Architecture, Xi'an University of Technology)
  • 투고 : 2020.07.15
  • 심사 : 2021.05.17
  • 발행 : 2021.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

As a new type of composite components, thin-walled concrete-filled steel tubes (CFSTs) have some advantages in terms of economy and processing. After the steel tube wall thins, the local buckling performance decreases and the stiffness decreases, which is not conducive to the structural safety. In this paper, combining the advantages of traditional spiral hoops and a stiffener, a new constraint in the form of a screw stiffener was proposed. On this basis, the composite member of thin-walled CFSTs with spiral ribs was put forward. The horizontal hysteretic test was carried out for the new composite column, and the failure mode, hysteretic characteristics, ductility, and energy dissipation capacity were obtained. The results showed that, compared with the traditional form, the seismic bearing capacity of the new composite column was increased by 11% and the ductility was increased by 45%. The deformation capacity was significantly improved. Based on experimental research, the seismic bearing capacity calculation and seismic damage assessment of the composite column were studied, and the practical calculation and the two-parameter damage assessment method considering the interaction between deformation and energy were proposed, which were in good agreement with the test results. This study can provide a technical basis for its engineering application. The composite column has good seismic performance, durability, and fire resistance, and thus has potential for application in practice.

키워드

과제정보

Supported by the National Natural Science Foundation of China (51978571).

참고문헌

  1. Bai, Y.T., Lin, X.C. and Mou, B. (2016), "Numerical modeling on post-local buckling behavior of circular and square concrete-filled steel tubular beam columns", Int. J. Steel Struct., 16(2), 531-546. https://doi.org/10.1007/s13296-016-6022-0.
  2. Brown, N.K., Kowalsky, M.J. and Nau, J.M. (2015), "Impact of D/t on seismic behavior of reinforced concrete filled steel tubes", J. Construct. Steel Res., 107(4), 111-123. https://doi.org/10.1016/j.jcsr.2015.01.013.
  3. Denavit, M.D and Hajjar, J.F. (2012), "Nonlinear seismic analysis of circular concrete-filled steel tube members and frames", J. Struct. Eng., 138(9), 1089-1098. https://doi.org/10.1061/(ASCE)ST.1943541X.0000544.
  4. Deng, Y. (2017), "Study on mechanical behavior and failure mechnism of concrete - filled circular steel tube under axial compression", Ph.D. Dissertation, Xi'an university of technology, Xi'an, China.
  5. DL/T 5154-2002 (2002), Technical Regulation of design for tower and pole structures of overhead transmission line, China Planning Press; Beijing, China.
  6. Gajalakshmi, P. and Helena, H.J. (2012), "Behaviour of concrete-filled steel columns subjected to lateral cyclic loading", J. Construct. Steel Res., 75(8), 55-63, 2012. https://doi.org/10.1016/j.jcsr.2012.03.006.
  7. GB 50017-2017 (2017), Code for Design of Steel Structures, China Planning Press; Beijing, China.
  8. GB 50936-2014 (2014), Code for design of concrete filled steel tubular sturtures, China Architecture & Building Press; Bei jing, China.
  9. Hamidian, M.R., Jumaat, M.Z., and Alengaram, U.J. (2016), "Pitch spacing effect on the axial compressive behaviour of spirally reinforced concrete-filled steel tube (SRCFT)", Thin-Walled Struct., 100(3), 213-223. https://doi.org/10.1016/j.tws.2015.12.011.
  10. Ho, J.C.M. and Luo, L. (2012), "Uni-axial behaviour of normal-strength concrete-filled-steel-tube columns with external confinement", Earthq. Struct., 3(6), 889-910. http://doi.org/10.12989/eas.2012.3.6.889.
  11. Huang, D., Huang, Y. and Chen, G.R. (2016), "Study on seismic ductility of steel tube-reinforced concrete column", Earthq. Eng. Eng. Dyn., 36(6), 207-214. https://doi.org/10.13197/j.eeev.2016.06.207.huangd.024.
  12. Ji, X.D., Kang, H.Z. and Chen, X.C. (2014), "Seismic behavior and strength capacity of steel tube-reinforced concrete composite columns", Earthq. Eng. Struct. Dyn., 43(4), 487-505. https://doi.org/10.1002/eqe.2354.
  13. Lai, M.H. and Ho, J.C.M. (2014), "Experimental and theoretical studies of confined HSCFST columns under uni-axial compression". "Seismic performance of high strength steel frames with variable eccentric braces based on PBSD method", Earthq. Struct., 7(4), 527-552. https://doi.org/10.12989/eas.2014.7.4.527.
  14. Liu, Y.J., Chen, G. and Zhang, N. (2014), "Experimental research on concrete-filled square steel tubular columns stiffened with PBL", J. Build. Struct., 35(10), 39-46. https://doi.org/10.14006/j.jzjgxb.2014.10.005.
  15. Long, Y.L., Cai, J. and Wang, Y.T. (2016), "Experimental study on seismic behavior of rectangular concrete-filled steel tubular stub columns with binding bars", J. Build. Struct., 37(2), 133-141. https://doi.org/10.14006/j.jzjgxb.2016.02.017.
  16. Park, T. and Hwang, W. (2011), "Damage evaluation of composite-special moment frames with concrete-filled tube columns under strong seismic loads", KSCE J. Civil Eng., 15(8), 1381-1394. https://doi.org/10.1007/s12205-011-1225-6.
  17. Petrus, C. and Hamid, H.A. (2010), "Experimental behavior of concrete filled thin walled steel tubes with tab stiffeners", J. Construct. Steel Res., 66(7), 915-922. https://doi.org/10.1016/j.jcsr.2010.02.006.
  18. Phan, H.D. and Lin, K.C. (2020), "Seismic behavior of full-scale square concrete filled steel tubular columns under high and varied axial compressions", Earthq. Struct., 18(6), 677-689. https://doi.org/10.12989/eas.2020.18.6.677.
  19. Qian, W.W., Li, W. and Han, L.H. (2015), "Analytical behavior of concrete-encased CFST columns under cyclic lateral loading", J. Construct. Steel Res., 120(4), 206-220. https://doi.org/10.1016/j.jcsr.2015.12.018.
  20. Skalomenous, K.A., Hatzigeorgiou, G.D. and Beskos, D.E. (2014), "Parameter identification of three hysteretic models for the simulation of the response of CFT columns to cyclic loading", Eng. Struct., 61(3), 44-60. https://doi.org/10.1016/j.engstruct.2014.01.006.
  21. Wang, Z.B., Guo, J.T. and Zhang, W.A. (2019), "Hysteretic behaviour of concrete-filled square cold-formed thin-walled steel tubular beam-columns with longitudinal stiffeners", J. Building Struct., 40(11), 172-181. https://doi.org/10.14006/j.jzjgxb.2017.0480.