Structural Engineering and Mechanics

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Numerical investigation on the structural behavior of two-way slabs reinforced with low ductility steel

  • Sakka, Zafer (Energy and Building Research Center, KISR) ;
  • Gilbert, R. Ian (School of Civil and Environmental Engineering, UNSW)
  • Received : 2017.06.07
  • Accepted : 2017.11.28
  • Published : 2018.02.10
⟨ Previous Next ⟩

Abstract

A numerical investigation of the impact of steel ductility on the strength and ductility of two-way corner and edge-supported concrete slabs containing low ductility welded wire fabric is presented. A finite element model was developed for the investigation and the results of a series of concurrent laboratory experiments were used to validate the numerical solution. A parametric investigation was conducted using the numerical model to investigate the various factors that influence the structural behavior at the strength limit state. Different values of steel uniform elongation and ultimate to yield strength ratios were considered. The results are presented and evaluated, with emphasis on the strength, ductility, and failure mode of the slabs. It was found that the ductility of the flexural reinforcement has a significant impact on the ultimate load behavior of two-way corner-supported slabs, particularly when the reinforcement was in the form of cold drawn welded wire fabric. However, the impact of the low ductility WWF has showed to be less prominent in structural slabs with higher levels of structural indeterminacy. The load-deflection curves of corner-supported slabs containing low ductility WWF are brittle, and the slabs have little ability to undergo plastic deformation at peak load.

Keywords

Acknowledgement

Supported by : Australian Research Council

References

  1. Bank, L.C. (2013), "Progressive failure and ductility of FRP composites for construction: Review", J. Compos. Constr., 17(3), 406-419. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000355
  2. Bazant, Z.P. and Oh, B.H. (1983), "Crack band theory for fracture of concrete", Mater. Struct., 24, 155-177.
  3. Cervenka, V., Jendele, L. and Cervenka, J. (2016), ATENA Program Documentation-Part 1: Theory, Prague.
  4. Cervenka, V., Pukl, R., Ozbolt, J. and Eligehausen, R. (1995), "Mesh sensitivity effects in smeared finite element analysis of concrete structures", FRAMCOS 2, 1387-1396.
  5. Dancygier, A.N. and Berkover, E. (2016), "Cracking localization and reduced ductility in fiber-reinforced concrete beams with low reinforcement ratios", Eng. Struct., 111, 411-424. https://doi.org/10.1016/j.engstruct.2015.11.046
  6. De Borst, R. (1986), "Non-linear analysis of frictional materials", Ph.D. Dissertation, Delft University of Technology, the Netherlands.
  7. Foster, S.J. and Kilpatrick, A.E. (2008), "The use of low ductility welded wire mesh in the design of suspended reinforced concrete slabs", Austr. J. Struct. Eng., 8(3), 237-248. https://doi.org/10.1080/13287982.2008.11465001
  8. Gilbert, R.I. (2005), "Strain localization and ductility of reinforced concrete slabs", Proceedings of the Australian Structural Engineering Conference.
  9. Gilbert, R.I. and Sakka, Z.I. (2007), "Effect of reinforcement type on the ductility of suspended reinforced concrete slabs", J. Struct. Eng., 133(6), 834-843. https://doi.org/10.1061/(ASCE)0733-9445(2007)133:6(834)
  10. Gilbert, R.I. and Sakka, Z.I. (2009), Effect of Support Settlement on the Strength and Ductility of Reinforced Concrete One-way Slabs Containing Class L Reinforcement, Concrete 09, Advances and Trends in Structural Engineering, Mechanics and Computation.
  11. Gilbert, R.I. and Sakka, Z.I. (2010), "Strength and ductility of reinforced concrete slabs containing welded wire fabric and subjected to support settlement", Eng. Struct., 32(6), 1509-1521. https://doi.org/10.1016/j.engstruct.2010.01.025
  12. Gilbert, R.I. and Smith, S.T. (2006), "Strain localization and its impact on the ductility of reinforced concrete slabs containing welded wire reinforcement", J. Adv. Struct. Eng., 9(1), 117-127. https://doi.org/10.1260/136943306776232837
  13. Gilbert, R.I., Sakka, Z.I. and Curry, M. (2006), "Moment redistribution in reinforced concrete slabs containing welded wire fabric", Proceedings of the 10th East Asia-Pacific Conference on Structural Engineering and Construction.
  14. Gilbert, R.I., Sakka, Z.I. and Curry, M. (2007), "The ductility of suspended reinforced concrete slabs containing Class L welded wire fabric", Proceedings of the 19th Australasian Conference on the Mechanics of Structures and Materials, Christchurch, New Zealand, November-December.
  15. Goldsworthy, H., Siddique, U. and Gravina, R. (2009), "Support settlement and slabs reinforced with low-ductility steel", ACI Struct. J., 106(6), 840-847.
  16. Ho Park, A.J. (2017), "Ductility analysis of prestressed concrete members with high-strength strands and code implications", Struct. J., 114(2).
  17. Ma, C., Awang, A.Z. and Omar, W. (2016), "Flexural ductility design of confined high-strength concrete columns: Theoretical modelling", Measure., 78, 42-48.
  18. Menetrey, P. and Willam, K.J. (1995), "Triaxial failure criterion for concrete and its generalization", ACI Struct. J., 92(3), 311-318.
  19. Mohammadhassani, M., Suhatril, M., Shariati, M. and Ghanbari, F. (2013), "Ductility and strength assessment of HSC beams with varying of tensile reinforcement ratios", Struct. Eng. Mech., 48(6), 833-848. https://doi.org/10.12989/sem.2013.48.6.833
  20. Mousa, M.I. (2015), "Flexural behaviour and ductility of high strength concrete (HSC) beams with tension lap splice", Alexandr. Eng. J., 54(3), 551-563. https://doi.org/10.1016/j.aej.2015.03.032
  21. Munter, S. and Patrick, M. (2012a), "SRIA's class L mesh elevated slab tests: Part 1A-objectives, design & details", Proceedings of the Australian Structural Engineering Conference, Perth, Australia, July.
  22. Munter, S. and Patrick, M. (2012b), "SRIA's class L mesh elevated slab tests: Part 1B-observations and results", Proceedings of the Australasian Structural Engineering Conference, Perth, Australia, July.
  23. Sakka, Z. (2009), "Impact of Steel Ductility on the Structural Behaviour and Strength of RC Slabs", Ph.D. Dissertation, University of New South Wales, Australia.
  24. Sakka, Z.I. and Gilbert, R.I. (2008a), Effect of Reinforcement Ductility on the Strength and Failure Modes of One-way Reinforced Concrete Slabs, Rep. No. UNICIV Report R-450, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, Australia.
  25. Sakka, Z.I. and Gilbert, R.I. (2008b), Effect of Reinforcement Ductility on the Strength, Ductility and Failure Modes of Continuous One-way Concrete Slabs Subjected to Support Settlement-Part 1, Rep. No. UNICIV Report R-451, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, Australia.
  26. Sakka, Z.I. and Gilbert, R.I. (2008c), Effect of Reinforcement Ductility on the Strength, Ductility and Failure Modes of Continuous One-way Concrete Slabs Subjected to Support Settlement-Part 2, Rep. No. UNICIV Report R-452, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, Australia.
  27. Sakka, Z.I. and Ian, G.R. (2017), "Structural behavior of two-way slabs reinforced with low-ductility WWF", J. Struct. Eng., 143(12), 04017166. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001902
  28. Standards Australia (2009), Concrete Structures, AS 3600-09, Sydney, Australia.
  29. Tuladhar, R. and Lancini, B.J. (2014), "Ductility of concrete slabs reinforced with low-ductility welded wire fabric and steel fibers", Struct. Eng. Mech., 49(4), 449-461. https://doi.org/10.12989/sem.2014.49.4.449
  30. Wang, H. and Belarbi, A. (2011), "Ductility characteristics of fiber-reinforced-concrete beams reinforced with FRP rebars", Constr. Build. Mater., 25(5), 2391-2401. https://doi.org/10.1016/j.conbuildmat.2010.11.040
  31. Warner, R.F., Rangan, B.V., Hall, A.S. and Faulkes, K.A. (1998), Concrete Structures, Longman, Australia.
  32. Wilkins, M.L. (1964), "Calculation of elastic-plastic flow, methods of computational physics", Meth. Comput. Phys., 3.

Cited by

  1. Torsional behavior of reinforced concrete plates under pure torsion vol.28, pp.3, 2021, https://doi.org/10.12989/cac.2021.28.3.311