DOI QR코드

DOI QR Code

Strain and crack development in continuous reinforced concrete slabs subjected to catenary action

  • Gouverneur, Dirk (Department of Structural Engineering, Ghent University) ;
  • Caspeele, Robby (Department of Structural Engineering, Ghent University) ;
  • Taerwe, Luc (Department of Structural Engineering, Ghent University)
  • Received : 2013.02.28
  • Accepted : 2014.10.17
  • Published : 2015.01.10

Abstract

Several structural calamities in the second half of the 20th century have shown that adequate collapse-resistance cannot be achieved by designing the individual elements of a structure without taking their interconnectivity into consideration. It has long been acknowledged that membrane behaviour of reinforced concrete structures can significantly increase the robustness of a structure and delay a complete collapse. An experimental large-scale test was conducted on a horizontally restrained, continuous reinforced concrete slab exposed to an artificial failure of the central support and subsequent loading until collapse of the specimen. Within this investigation the development of catenary action associated with the formation of large displacements was observed to increase the ultimate load capacity of the specimen significantly. The development of displacements, strains and horizontal forces within this investigation confirmed a load transfer process from an elastic bending mechanism to a tension controlled catenary mechanism. In this contribution a special focus is directed towards strain and crack development at critical sections. The results of this contribution are of particular importance when validating numerical models related to the development of catenary action in concrete slabs.

Keywords

Acknowledgement

Grant : Theoretical and experimental study of membrane actions in the framework of robustness analyses of concrete structures

Supported by : Research Foundation Flanders(FWO)

References

  1. Amir, S., van der Veen, C., Walraven, J.C. and de Boer, A. (2012), "Punching shear strength of concrete decks", Proceedings of the International Conference on Advanced Concrete Technology and its Applications (ACTA-2012), Islamabad, Pakistan, November.
  2. Bailey, C.G. (2001), "Membrane action of unrestrained lightly reinforced concrete slabs at large displacements", Eng. Struct., 23(5), 470-483. https://doi.org/10.1016/S0141-0296(00)00064-X
  3. Bailey, C.G., Toh, W.S. and Chan, B.M. (2008), "Simplified and advanced analysis of membrane action of concrete slabs", ACI Struct. J., 105(1), 30-40.
  4. CEN (European Committee for Standardization (2002), Eurocode: Basis of structural design, CEN, Brussels.
  5. CEN (European Committee for Standardization (2006), Eurocode 1: Actions on structures: Part 1-7:Accidental actions, CEN, Brussels.
  6. Gouverneur, D., Caspeele, R. and Taerwe, L. (2013), "Experimental investigation of the load-displacement behaviour under catenary action in a restrained reinforced concrete slab strip", Eng. Struct., 49, 1007-1016. https://doi.org/10.1016/j.engstruct.2012.12.045
  7. Hayes, B. (1968), "Allowing for membrane action in the plastic analysis of rectangular reinforced concrete slabs", Mag. Concrete Res., 20(65), 205-212. https://doi.org/10.1680/macr.1968.20.65.205
  8. Johansen, K.W. (1962), Yield-Line Theory, Cement and Concrete Association, London, United Kingdom.
  9. Li, G.Q., Guo, S.X. and Zhou, H.S. (2007), "Modeling of membrane action in floor slabs subjected to fire", Eng. Struct., 29(6), 880-887. https://doi.org/10.1016/j.engstruct.2006.06.025
  10. Muthu, K.U., Amarnath, K., Ibrahim, A. and Mattarneh, H. (2007), "Load deflection behaviour of partially restrained slab strips", Eng. Struct., 29(5), 663-74. https://doi.org/10.1016/j.engstruct.2006.05.017
  11. Ockleston, A.J. (1955), "Load tests on a 3-story reinforced concrete building in Johannesburg", Struct. Eng., 33(10), 304-322.
  12. Park, R. (1964), "Tensile membrane behaviour of uniformly loaded reinforced concrete slabs with fully restrained edges", Mag. Concrete Res., 16(46), 39-44. https://doi.org/10.1680/macr.1964.16.46.39
  13. Westergaard, H.M. and Slater, W.A. (1921), "Moments and stresses in slabs", ACI Struct. J., 17(2), 415-539.
  14. Wood, R.H. (1961), Plastic And Elastic Design Of Slabs And Plates, With Particular Reference To Reinforced Concrete Floor Slabs, Thames and Hudson, London, United Kingdom.
  15. Yu, J. and Tan, K.H. (2011), "Experimental and numerical investigation on progressive collapse resistance of reinforced concrete beam column sub-assemblages", Eng. Struct., 139, 233-250.

Cited by

  1. Membrane behavior in RC slabs subjected to simulated reinforcement corrosion vol.123, 2016, https://doi.org/10.1016/j.engstruct.2016.05.040
  2. Deformation of multi-storey flat slabs, a site investigation vol.5, pp.1, 2015, https://doi.org/10.12989/acc.2017.5.1.49
  3. Numerical investigation on progressive collapse resistance of steel-concrete composite floor systems vol.17, pp.2, 2021, https://doi.org/10.1080/15732479.2020.1733622