Advertisement

Arabian Journal for Science and Engineering

, Volume 44, Issue 5, pp 5117–5129 | Cite as

Fire Resistance Test of a Reinforced Concrete Beam-Supporting Column Transfer Structure Joint Unit

  • Weiyi KongEmail author
  • Chuanguo Fu
  • Weiqing Liu
Research Article - Civil Engineering
  • 51 Downloads

Abstract

According to the characteristics of a reinforced concrete beam-supporting column transfer structure, two types of beam-supporting column joint unit specimens are designed, and fire resistance tests are conducted on the specimens. Adopting the ISO 834 international standard heating curve for temperature control, the temperatures at the measuring points on the concrete and rebar inside each joint unit specimen and the vertical deformation at the feature position of each joint unit specimen are recorded, the corresponding curves are drawn, and the fire resistance rating is obtained. After the specimens are naturally cooled, the damage to the specimens after reaching the fire resistance rating is observed. The experimental results show the following attributes: After the reinforced concrete beam-supporting column transfer structure joint unit specimen reaches the fire resistance rating, the bending deformation of the transfer girder becomes more concentrated; the damage modes of the beam sections are bending failure; the cracks are largely located approximately 400–500 mm from the maximum bending moment section; and the longitudinal rebar in the crack section of the transfer girder could break under high temperatures. Under the coupling of fire with a constant load, the distribution of internal forces along the axis of the transfer girder changes, causing the girder to deform differently on the two sides of the supported column. Therefore, the influence of a change in the internal force distribution on the fire behavior due to the arrangement of the supported column must be considered.

Keywords

Reinforced concrete Transfer structure Beam-supporting column joint unit Fire resistance 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Notes

Acknowledgements

The authors gratefully acknowledge the National Natural Science Foundation of China (51278289, 51478254) for funding this research project.

References

  1. 1.
    Zhu, J.; Yao-peng, W.: Effect of exposure time and elevated temperature on ordinary concrete. Emerg. Mater. Res. 6(1), 178–183 (2017)CrossRefGoogle Scholar
  2. 2.
    Le, Q.X.; Dao, V.T.N.; Torero, J.L.; Maluk, C.; Bisby, L.: Effects of temperature and temperature gradient on concrete performance at elevated temperatures. Adv. Struct. Eng. 21(8), 1223–1233 (2018)CrossRefGoogle Scholar
  3. 3.
    Wu, B.; Wei, X.; Wen, B.: Thermal fields of cracked concrete members in fire. Fire Saf. J. 66, 15–24 (2014)CrossRefGoogle Scholar
  4. 4.
    Gernay, T.; Franssen, J.M.: A plastic-damage model for concrete in fire Applications in structural fire engineering. Fire Saf. J. 71, 268–278 (2015)CrossRefGoogle Scholar
  5. 5.
    Khalaf, J.; Huang, A.H.; Fan, M.Z.: Analysis of bond-slip between concrete and steel bar in fire. Comput. Struct. 162, 1–15 (2016)CrossRefGoogle Scholar
  6. 6.
    Kodur, V.; Dwaikat, M.: Fire-induced spalling in reinforced concrete beams. Proc. Inst. Civ. Eng. Struct. Build. 165(7), 347–359 (2012)CrossRefGoogle Scholar
  7. 7.
    Mistri, A.; Davis, P.R.; Sarkar, P.: Condition assessment of fire affected reinforced concrete shear wall building—a case study. Adv. Concr. Constr. 4(2), 89–105 (2016)CrossRefGoogle Scholar
  8. 8.
    Kodur, V.K.R.; Agrawal, A.: Effect of temperature induced bond degradation on fire response of reinforced concrete beams. Eng. Struct. 142, 98–109 (2017)CrossRefGoogle Scholar
  9. 9.
    Liao, F.; Huang, Z.H.: Modeling cracks of reinforced concrete slabs under fire conditions. J. Struct. Eng. 144(5), 04018030-1–04018030-15 (2018)Google Scholar
  10. 10.
    Li, Z.; Liu, Y.; Huo, J.; Rong, H.; Chen, J.; Elghazouli, A.: Experimental assessment of fire-exposed RC beam-column connections with varying reinforcement development lengths subjected to column removal. Fire Saf. J. 99, 38–48 (2018)CrossRefGoogle Scholar
  11. 11.
    Wu, B.; Liu, J.; Chen, X.: Numerical analysis of lateral displacement of beam-column joints in concrete frame structures subjected to fire. Adv. Struct. Eng. 21(10), 1495–1509 (2018)CrossRefGoogle Scholar
  12. 12.
    Ravi, P.P.; Srivastava, G.: Nonlinear analysis of reinforced concrete plane frames exposed to fire using direct stiffness method. Adv. Struct. Eng. 21(17), 1036–1050 (2018)Google Scholar
  13. 13.
    Fu, C.; Kong, W.; Song, S.; Wang, Y.: Deformation analysis of reinforced concrete structure with bearing column girder transfer floor under fire conditions. J. Build. Struct. 36(S2), 175–182 (2015)Google Scholar
  14. 14.
    Kong, W.; Fu, C.; Chu, F.; Wang, Y.: Thermal mechanical coupling analysis of reinforced concrete transfer structure with superimposed vierendeel truss. J. Disaster Prev. Mitig. Eng. 03(36), 386–393 (2016)Google Scholar
  15. 15.
    PRC National Standard. Fire-resistance test-elements of building construction. (GB/T9978-2008) (2008)Google Scholar
  16. 16.
    ASTM Standard Test Methods for Fire Tests of Building Construction and Materials, ASTM E119. American Society for Testing and Materials, West Conshohocken (2018)Google Scholar
  17. 17.
    International Standard ISO834, Fire-Resistance Tests Elements of Building Construction, Amendment 1, Amendment 2 (1980)Google Scholar

Copyright information

© King Fahd University of Petroleum & Minerals 2019

Authors and Affiliations

  1. 1.School of Civil EngineeringSoutheast UniversityNanjingChina
  2. 2.School of Civil EngineeringShandong Jianzhu UniversityJinanChina
  3. 3.School of Civil EngineeringNanjing Tech UniversityNanjingChina

Personalised recommendations