DOI QR코드

DOI QR Code

Seismic performance of RC columns with full resistance spot welding stirrups

  • Yu, Yunlong (School of Civil Engineering, Xi'an University of Architecture & Technology) ;
  • Dang, Zhaohui (School of Civil Engineering, Xi'an University of Architecture & Technology) ;
  • Yang, Yong (School of Civil Engineering, Xi'an University of Architecture & Technology) ;
  • Chen, Yang (School of Civil Engineering, Xi'an University of Architecture & Technology) ;
  • Li, Hui (School of Civil Engineering, Xi'an University of Architecture & Technology)
  • Received : 2019.06.22
  • Accepted : 2019.10.19
  • Published : 2020.03.10

Abstract

This paper aims to investigate the seismic performance of RC short columns and long columns with welding stirrups. Through the low-cyclic horizontal loading test of specimens, the seismic performance indexes such as failure modes, hysteretic curve, skeleton curve, ductility, energy dissipation capacity, stiffness degradation and strength degradation were emphatically analyzed. Furthermore, the effects of shear span ratio, stirrups ratio and axial compression ratio on the performance of specimens were studied. The results showed that the seismic performance of the RC short columns with welding stirrups were basically the same as that of the RC short columns with traditional stirrups, but the seismic performance of RC long columns with welding stirrups was better than that of RC long columns with traditional stirrups. The seismic performance of RC short columns and long columns with welding stirrups could be improved by increasing stirrup ratio and shear span ratio and reducing axial pressure ratio. Moreover, the welding stirrup have the advantages of steel saving, industrialization and standardization production, convenient construction, and reducing time, which indicated that the welding stirrups could be applied in practical engineering.

Keywords

References

  1. Carrillo, J., Rico, A. and Alcocer, S. (2016), "Experimental study on the mechanical properties of welded-wire meshes for concrete reinforcement in Mexico City", Construct. Build. Mater., 127, 663-672. https://doi.org/10.1016/j.conbuildmat.2016.10.011.
  2. Dong, H. L., Wang, D., Wang, Z. and Sun, Y. (2018), "Axial compressive behavior of square concrete columns reinforced with innovative closed-type winding GFRP stirrups", Compos. Struct., 192, 115-125. https://doi.org/10.1016/j.compstruct.2018.02.092.
  3. Fajiang, L., Changfeng, X., Peng, L., Xueping, Y., Zhaohu, M. and Xinzong, G. (2012), "Application of Flash Butt Welding Technology of Stirrups for Tall Building", Construct. Technol., 41(357), 95-98.
  4. Grgic, N., Radnic, J., Matesan, D. and Banovic, I. (2017), "Stirrups effect on the behavior of concrete columns during an earthquake", Materialwissenschaft und Werkstofftechnik, 48(5), 409-416. https://doi.org/10.1002/mawe.201700014.
  5. Hanns U, B. (2004), "Recent Advancement in Tall Earthquake Resistant Structures", IABSE Symposium Report, 2004, 37-41.
  6. Hanns U, B. (2004), "Recent Advancement In The Tall Earthquake Resistant Structure", Metropolitan Habitats Infrastructure, 34(2), 23-31.
  7. Hanns U, B. (2006), "Three Test Programs Show That Welded Reinforcement Grids (wrg) Correct Unsafe Detail in Seismic Designs", Proceedings of the 2006 Concrete Bridge Conference, Napoleon, U.S.A.
  8. Hanns U, B. (2008), "Evolving Technology for Design and Construction of Tall Concrete Structure", Proceedings of the CTBUH 8th World Congress, Dubai, March.
  9. Hanns U, Baumann. (2008), "Research on Application Technology of Welding Reinforcement", Proceedings of the CTBUH 8th World Congress, Dubai, March.
  10. Jure Radnic, Radoslav Markic et al. (2013), "Stirrup effects on compressive strength and ductility of confined concrete columns", Wordl J. Eng., 10(6), 497-506.
  11. Li, S.C. (2016), "Experimental study on restoring force model of high strength concrete columns confined by butt-welded closed composite stirrups", J. Build. Struct., 37(1), 41-47.
  12. Li, S.C. and Zhang, J. (2012), "Research on confinement of stirrups in the high strength concrete columns with welding ring stirrups under cyclic load", Build. Struct., 42(4), 94-98.
  13. Masi, A., Santarsiero, G., Lignola G.P. and Verderame, G.M. (2013), "Study of the seismic behavior of external RC beam- column joints through experimental tests and numerical simulations", Eng. Struct., 52, 207-219. https://doi.org/10.1016/j.engstruct.2013.02.023.
  14. Roorda, D.D. (2008), "Design of the Tallest Reinforced Concrete Structure in alifornia-a-58-Story Residential Tower in San Francisco", ASCE 2008, 21(3), 365-378. https://doi.org/10.1061/41016(314)85.
  15. Saatcioglu, M. and Grira, M. (1999), "Confinement of reinforced concrete columns with welded reinforcement grids", ACI Struct. J., 96(1), 29-39.
  16. Saatcioglu, M. and Razvi, S.R. (1992), "Strength and Ductility of Confined Concrete", J. Struct. Eng., 118(6), 1590-1607. https://doi.org/10.1061/(ASCE)0733-9445(1992)118:6(1590).
  17. Tamer, D. and Oguz, D. (2018), "Investigation of the performance of externally collared RC short columns via aspect ratio", Struct. Eng. Mech., 68(3), 277-287. https://doi.org/10.12989/sem.2018.68.3.277.
  18. Truong, G.T., Kim, J. and Choi, K. (2017), "Seismic performance of reinforced concrete columns retrofitted by various methods", Eng. Struct., 134(2017), 217-235. https://doi.org/10.1016/j.engstruct.2016.12.046.
  19. Ventura, A., De Biagi, V. and Chiaia, B. (2018), "Structural robustness of RC frame buildings under threat-independent damage scenarios", Struct. Eng. Mech., 65(6), 689-698. https://doi.org/10.12989/sem.2018.65.6.689.
  20. Yan, J., LV, H.H. and Li, Z.L. (2017), "Experimental on the seismic behavior of welded closed stirrup concrete columns", J. Civil Eng. Manag., 34(6), 96-101.
  21. Yang, X.M. and Yang, X.M. (2004), "Application of closed stirrup with flash butt welding method", Technical scape, 6, 24-26.
  22. Zengping, W., Hao X. and Ming, L. (2009), "Damage Features of RC Frame Structures in Wenchuan Earthquake", J. Beijing U. Technol., 35(6), 753-760.

Cited by

  1. Seismic behavior of prefabricated high-strength concrete columns confined by overlapping stirrups vol.79, pp.5, 2020, https://doi.org/10.12989/sem.2021.79.5.579