Earthquakes and Structures

  • 제17권6호
  • /
  • Pages.567-575
  • /
  • 2019
  • /
  • 2092-7614(pISSN)
  • /
  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Test study on the impact resistance of steel fiber reinforced full light-weight concrete beams

  • Yang, Yanmin (School of Civil Engineering, Jilin Jianzhu University) ;
  • Wang, Yunke (School of Civil Engineering, Jilin Jianzhu University) ;
  • Chen, Yu (School of Civil Engineering, Jilin Jianzhu University) ;
  • Zhang, Binlin (School of Civil Engineering, Jilin Jianzhu University)
  • 투고 : 2019.08.01
  • 심사 : 2019.10.24
  • 발행 : 2019.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

In order to investigate the dynamic impact resistance of steel fiber reinforced full light-weight concretes, we implemented drop weight impact test on a total of 6 reinforced beams with 0, 1 and 2%, steel fiber volume fraction. The purpose of this test was to determine the failure modes of beams under different impact energies. Then, we compared and analyzed the time-history curves of impact force, midspan displacement and reinforcement strain. The obtained results indicated that the deformations of samples and their steel fibers were proportional to impact energy, impact force, and impact time. Within reasonable ranges of parameter values, the effects of impact size and impact time were similar for all volumetric contents of steel fibers, but they significantly affected the crack propagation mechanism and damage characteristics of samples. Increase of the volumetric contents of steel fibers not only effectively reduced the midspan displacement and reinforcement strain of concrete samples, but also inhibited crack initiation and propagation such that cracks were concentrated in the midspan areas of beams and the frequency of cracks at supports was reduced. As a result, the tensile strength and impact resistance of full light-weight concrete beams were significantly improved.

키워드

과제정보

연구 과제 주관 기관 : National Emergency Management Department, Jilin Province Education Department

참고문헌

  1. Adhikary, S.D., Li, B. and Fujikake, K. (2015), "Low velocity impact response of reinforced concrete beams: experimental and numerical investigation", Int. J. Protect. Struct., 6(1), 81-111. https://doi.org/10.1260/2041-4196.6.1.81.
  2. Amin, A. and Foster, S.J. (2016), "Shear strength of steel fibre reinforced concrete beams with stirrups", Eng. Struct., 111(5), 323-332. https://doi.org/10.1016/j.engstruct.2015.12.026.
  3. Bhatti, A.Q., Kishi, N., Mikami, H. and Ando, T. (2009), "Elasto-plastic impact response analysis of shear-failure-type rc beams with shear rebars", Mater. Des., 30(3), 502-510. https://doi.org/10.1016/j.matdes.2008.05.068.
  4. Biolzi, L. and Cattaneo, S. (2017), "Response of steel fiber reinforced high strength concrete beams: Experiments and code predictions", Cement Concrete Compos., 77, 1-13. https://doi.org/10.1016/j.cemconcomp.2016.12.002.
  5. Caverzan, A., Cadoni, E. and Di, P.M. (2012), "Tensile behaviour of high performance fibre-reinforced cementitious composites at high strain rates", Int. J. Impact Eng., 45, 28-38. https://doi.org/10.1016/j.ijimpeng.2012.01.006.
  6. Chalioris, C.E. (2013), "Analytical approach for the evaluation of minimum fibre factor required for steel fibrous concrete beams under combined shear and flexure", Constr. Build. Mater., 43, 317-336. https://doi.org/10.1016/j.conbuildmat.2013.02.039.
  7. Chalioris, C.E. (2013), "Steel fibrous RC beams subjected to cyclic deformations under predominant shear", Eng. Struct., 49, 104-118. https://doi.org/10.1016/j.engstruct.2012.10.010.
  8. Chalioris, C.E. and Sfiri, E.F. (2011), "Shear performance of steel fibrous concrete beams", Procedia Eng., 14, 2064-2068. https://doi.org/10.1016/j.proeng.2011.07.259.
  9. Chalioris, C.E., Kosmidou, P.K. and Karayannis, C.G. (2019), "Cyclic response of steel fiber reinforced concrete slender beams: An experimental study", Mater., 12(9), 1398. https://doi.org/10.3390/ma12091398.
  10. China Engineering Construction Standardization Association Standard (1989), Test Methods for Steel Fiber Reinforced Concrete, China Planning Press, Beijing, China. (in Chinese)
  11. Dey, V., Bonakdar, A. and Mobasher, B. (2014), "Low-velocity flexural impact response of fiber-reinforced aerated concrete", Cement Concrete Compos., 49, 100-110. https://doi.org/10.1016/j.cemconcomp.2013.12.006.
  12. Fang, Q. and Zhang, J. (2013), "Three-dimensional modelling of steel fiber reinforced concrete material under intense dynamic loading", Constr. Build. Mater., 44, 118-132. https://doi.org/10.1016/j.conbuildmat.2013.02.067.
  13. Fu, H.C., Erki, M.A. and Seckin, M. (1991), "Review of effects of loading rate on concrete in compression", J. Struct. Eng., 117(12), 3645-659. https://doi.org/10.1061/(ASCE)0733-9445(1991)117:12(3645).
  14. Fujikake, K., Li, B. and Soeun, S. (2009), "Impact response of reinforced concrete beam and its analytical evaluation", J. Struct. Eng., 135(8), 938-950. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000039.
  15. Hrynyk, T.D. and Vecchio, F.J. (2014), "Behavior of steel fiber-reinforced concrete slabs under impact load", ACI Struct. J., 111(5), 1213-1224. https://doi.org/10.14359/51686923
  16. Huo, J.S. and Huo, K.Y. (2017), "Failure mechanism of rc beams under impact loading and discussion on prediction methods of residual deflection.", J. Hunan Univ. (Nat. Sci.), 44(1), 112-117. (in Chinese)
  17. Jin, L., Zhang, R.B., Dou, G.Q., Xu, J.D. and Du, X.L. (2017), "Experimental and numerical study of reinforced concrete beams with steel fibers subjected to impact loading", Int. J. Damage Mech., 27(7), 1058-1083. https://doi.org/10.1177/1056789517721616.
  18. Lee, J.H., Cho, B. and Choi, E. (2017), "Flexural capacity of fiber reinforced concrete with a consideration of concrete strength and fiber content", Constr. Build. Mater., 138, 222-231. https://doi.org/10.1016/j.conbuildmat.2017.01.096.
  19. Lee, J.Y., Shin, H.O., Yoo, D.Y. and Yoon, Y.S. (2018), "Structural response of steel-fiber-reinforced concrete beams under various loading rates", Eng. Struct., 156, 271-283. tps://doi.org/10.1016/j.engstruct.2017.11.052.
  20. Malvar, L.J. and Ross, C.A. (1998), "Review of strain rate effects for concrete in tension", ACI Struct. J., 95(6), 735-739.
  21. Nazarimofrad, E., Shaikh, F.U.A. and Nili, M. (2017), "Effects of steel fibre and silica fume on impact behaviour of recycled aggregate concrete", J. Sustain. Cement-Bas. Mater., 6(1), 182-202. https://doi.org/10.1080/21650373.2016.1230900.
  22. Perumal, R. (2014), "Performance and modeling of high-performance steel fiber reinforced concrete under impact loads", Comput. Concrete, 13(2), 255-270. https://doi.org/10.12989/cac.2014.13.2.255.
  23. Tsonos, A.G. (2009a), "Steel fiber high-strength reinforced concrete: a new solution for earthquake strengthening of old R/C structures", WIT Tran. Built Environ., 104, 153-164. https://doi.org/10.2495/ERES090141
  24. Tsonos, A.G. (2009b), "Ultra-high-performance fiber reinforced concrete: an innovative solution for strengthening old R/C structures and for improving the FRP strengthening method", WIT Tran. Eng. Sci., 64, 273-284. https://doi.org/10.2495/MC090261
  25. Tsonos, A.G. (2014), "A new method for earthquake strengthening of old R/C structures without the use of conventional reinforcement", Struct. Eng. Mech., 52(2), 391-403. http://dx.doi.org/10.12989/sem.2014.52.2.391.
  26. Wang, Z.L., Liu, Y.S. and Shen, R.F. (2008), "Stress-strain relationship of steel fiber-reinforced concrete under dynamic compression", Constr. Build. Mater., 22(5), 811-819. https://doi.org/10.1016/j.conbuildmat.2007.01.005.
  27. Watanabe, K., Kimura, T. and Niwa, J. (2010), "Synergetic effect of steel fibers and shear-reinforcing bars on the shear-resistance mechanisms of RC linear members", Constr. Build. Mater., 24(12), 2369-2375. https://doi.org/10.1016/j.conbuildmat.2010.05.009.
  28. Yoo, D.Y. and Yoon, Y.S. (2014), "Influence of steel fibers and fiber-reinforced polymers on the impact resistance of one-way concrete slabs", J. Compos. Mater., 48(06), 695-706. https://doi.org/10.1177/0021998313477167.
  29. Yoo, D.Y., Banthia, N., Kim, S.W. and Yoon, Y.S. (2015), "Response of ultra-high-performance fiber-reinforced concrete beams with continuous steel reinforcement subjected to low-velocity impact loading", Compos. Struct., 126, 233-245. https://doi.org/10.1016/j.compstruct.2015.02.058.
  30. Yoo, D.Y., Yoon, Y.S. and Banthia, N. (2015), "Flexural response of steel-fiber-reinforced concrete beams: effects of strength, fiber content, and strain-rate", Cement Concrete Compos., 64(2), 84-92. https://doi.org/10.1016/j.cemconcomp.2015.10.001.