Numerical Simulation of Punching Shear of Flat Plates with Low Reinforcement
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Numerical Simulation of Punching Shear of Flat Plates with Low Reinforcement

Authors: Fatema-Tuz-Zahura, Raquib Ahsan

Abstract:

Punching shear failure is usually the governing failure mode of flat plate structures. Punching failure is brittle in nature which induces more vulnerability to this type of structure. In the present study, a 3D finite element model of a flat plate with low reinforcement ratio and without any transverse reinforcement has been developed. Punching shear stress and the deflection data were obtained on the surface of the flat plate as well as through the thickness of the model from numerical simulations. The obtained data were compared with the experimental results. Variation of punching stress with respect to deflection as obtained from numerical results is found to be in good agreement with the experimental results; the range of variation of punching stress is within 5%. The numerical simulation shows an early and gradual onset of nonlinearity, whereas the same is late and abrupt as observed in the experimental results. The range of variation of punching stress for different slab thicknesses between experimental and numerical results is less than 15%. The developed numerical model is useful to complement available punching test series performed in the past. The results obtained from the numerical model will be helpful for designing retrofitting schemes of flat plates.

Keywords: Flat plate, finite element model, punching shear, reinforcement ratio.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1125781

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References:


[1] Kinnunen, S. and Nylander, H., Punching of Concrete Slabs Without Shear Reinforcement, Transactions of the Royal Institute of Technology, No. 158, 112 pp., Stockholm, Sweden, 1960.
[2] Muttoni, A., Punching shear strength of reinforced concrete slabs without transverse reinforcement, ACI Structural Journal, Vol. 105, No. 4, pp. 440-450, USA, 2008.
[3] Lips S. and Muttoni A., Influence of punching shear reinforcement on the flexural response of flat slabs, fib Symposium Tel-Aviv 2013, Israel, 2013, 4.
[4] Fernández, R. M. and Muttoni, A., Applications of the critical shear crack theory to punching of R/C slabs with transverse reinforcement, ACI Structural Journal, Vol. 106 No. 4, pp. 485-494, USA, 2009.
[5] Mirzaei, Y., Post punching behavior of reinforced slab column connection, 7th fib PhD Symposium in Stuttgart, 2008.
[6] Mirzaei, Y. and Sasani, M., Punching shear failure in progressive collapse analysis, Proc., Structures Congress, 2941-2950.
[7] Mirzaei, Y. and Sasani, M., Progressive collapse resistance of flat slab-Modeling post punching behavior, Computers and Concrete 12 (3), 351-375.
[8] Fariborz M, Concentric Punching Shear Strength of Reinforced Concrete Flat Plates, Master of Engineering thesis, Swinburne University of Technology, Melbourne, Australia, June 2012.
[9] AS 3600 Supplement 1:2014 Concrete structures—Commentary (Supplement to AS 3600—2009).
[10] ACI, Building Code Requirements for Structural Concrete, ACI American Concrete Institute, ACI 318-05, 430 . USA, 2005
[11] CSA STANDARD A23.3-04, Canadian Standard Association, 232, 2004.
[12] DIN 1045-1 Tragwerke aus Beton und Stahlbeton , DIN 1045-1, Deutsches Institut für Normung, 2nd Edition, 148 p., Berlin, Germany, German, 2005.
[13] Eurocode 2: Design of concrete structures - Part 1-1: General rules and rules for buildings, European Committee for Standardization (CEN), Brussels, 2004.
[14] NZS 3101-1 (2006) (English): Concrete structures standard - The design of concrete structures.
[15] ACI Committee 318, “Building Code Requirements for Structural Concrete (ACI 318-08) and Commentary,” American Concrete Institute, Farmington Hills, MI, 2005, 465 pp.
[16] Guandalini S., Burdet O., Muttoni A., Punching tests of slabs with low reinforcement ratios, ACI Structural Journal, V. 106, N°1, USA, 2009, pp. 87-95.
[17] Abaqus Analysis User's Manual, Article 23.1.1 Element library, Figure 23.1.1–1.
[18] Carreira, D.J., Chu K.H.(1984).”Stress-Strain relationship for plain concrete in compression”. ACI Journal, Technical Paper, Title no. 82-72.
[19] Carreira, D.J., Chu, K.H. (1984).”Stress-Strain relationship for Reinforced concrete in Tension”. ACI Journal, Technical Paper, Title no. 83-3.