Finite-Element Analysis of Reinforced Concrete Slabs with Punching Shear Reinforcement
Publication: Journal of Structural Engineering
Volume 142, Issue 12
Abstract
Finite-element analyses (FEA) of reinforced concrete slab-column connections with shear reinforcement are presented and discussed. Ultimate loads and crack patterns are shown and compared to the experimental findings. The damaged plasticity model in ABAQUS, previously calibrated and validated on tested slabs without shear reinforcement, is adopted to properly simulate the behavior of slab-column connections with shear reinforcement. Four interior slab-column specimens were tested under vertical loading applied through the column. One slab specimen was without shear reinforcement, while the other three differed in the amount of the shear bolts. The objective of this paper is to propose a novel numerical modeling strategy for simulating and analyzing shear reinforced slabs with shear bolts. For that purpose, in the numerical analyses, four different approaches for modeling the shear bolt are introduced and described. Discussion and comparison on the predicted failure loads from the design codes and models in conjunction with the experimental and numerical data, are presented. Finally, a parametric numerical study is conducted, where the rectangular and the radial shear reinforcement arrangements are compared.
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Acknowledgments
The authors are grateful for the financial support provided by a research grant from the Natural Sciences and Engineering Research Council (NSERC) of Canada.
References
ABAQUS [Computer software]. Dassault Systèmes, Waltham, MA.
ACI. (2014). “Building code requirements for structural concrete (ACI 318-14) and commentary.” Farmington Hills, MI.
Adetifa, B., and Polak, M. A. (2005). “Retrofit of slab column interior connections using shear bolts.” ACI Struct. J., 102(2), 268–274.
Alexander, S. D. B., and Hawkins, N. M. (2005). “A design prospective on punching shear.”, American Concrete Institute, Farmington Hills, MI, 97–108.
Bazant, Z. P., and Oh, B.-H. (1983). “Crack band theory for fracture of concrete.” Mater. Struct. (RILEM, Paris), 16(3), 155–177.
Beutel, R. (2001). “3D numerical punching analysis of shear reinforced flat slabs-variation of quantity and arrangement of stirrups.”, Punching of Structural Concrete Slabs, CEB/fib International Federation for Structural Concrete, Lausanne, Switzerland, 79–85.
Broms, C. E. (2000). “Elimination of flat plate punching failure mode.” ACI Struct. J., 97(1), 94–101.
Broms, C. E. (2007). “Flat plates in seismic areas: Comparison of shear reinforcement systems.” ACI Struct. J., 104(6), 712–721.
CEN (European Committee for Standardization). (2004). “Design of concrete structures—Part 1-1: General rules and rules for buildings.”, Brussels, Belgium.
Corley, W. G., and Hawkins, N. M. (1968). “Shearhead reinforcement for slabs.” ACI J., 65(10), 811–824.
Dilger, W. H., and Ghali, A. (1981). “Shear reinforcement for concrete slabs.” J. Struct. Div., 107(12), 2403–2420.
Durrani, A. J., Du, Y., and Luo, Y. H. (1995). “Seismic resistance of nonductile slab-column connections in existing flat-slab buildings.” ACI Struct. J., 92(4), 479–487.
Eder, M. A., Vollum, R. L., ELghazouli, A. Y., and Abdel-Fattah, T. (2010). “Modelling and experimental assessment of punching shear in flat slabs with shearheads.” Eng. Struct., 32(12), 3911–3924.
Elgabry, A. A., and Ghali, A. (1990). “Design of stud-shear reinforcement for slabs.” ACI Struct. J., 87(3), 350–361.
El-Salakawy, E. F., Polak, M. A., and Soliman, M. H. (1998). “Reinforced concrete slab-column edge connections subjected to high moments.” Can. J. Civ. Eng., 25(3), 526–538.
El-Salakawy, E. F., Polak, M. A., and Soliman, M. H. (2000). “Reinforced concrete slab-column edge connections with shear studs.” Can. J. Civ. Eng., 27(2), 338–348.
El-Salakawy, E. F., Polak, M. A., and Soudki, K. A. (2002). “Rehabilitation and strengthening of reinforced concrete slab-column connections.” Can. J. Civ. Eng., 29(4), 602–611.
El-Salakawy, E. F., Polak, M. A., and Soudki, K. A. (2003). “New shear strengthening technique for concrete slab-column connections.” ACI Struct. J., 100(3), 297–304.
Elstner, R. C., and Hognestad, E. (1956). “Shearing strength of reinforced concrete slabs.” J. ACI, 53(7), 29–58.
Fernandez, R. M., and Muttoni, A. (2009). “Applications of critical shear crack theory to punching of reinforced concrete slabs with transverse reinforcement.” ACI Struct. J., 106(4), 485–494.
fib (Federation Internationale du Béton). (2010). Model code for concrete structures 2010, Ernst & Sohn, Lausanne, Switzerland.
Genikomsou, A. S., and Polak, M. A. (2015). “Finite element analysis of punching shear of concrete slabs using damaged plasticity model in ABAQUS.” Eng. Struct., 98(4), 38–48.
Guan, H., and Polak, M. A. (2007). “Finite element studies of reinforced concrete slab-edge column connections with opening.” Can. J. Civ. Eng., 34(8), 952–965.
Hallgren, M. (1996). “Punching shear capacity of reinforced high strength concrete slabs.” Ph.D. thesis, Dept. of Structural Engineering, Royal Institute of Technology, Stockholm, Sweden.
Hanna, S. N., Mitchell, D., and Hawkins, N. M. (1975). “Slab-column connections containing shear reinforcement and transferring high-intensity reversed moments.”, Division of Structures and Mechanics, Dept. of Civil Engineering, Univ. of Washington, Seattle.
Hawkins, N. M. (1974). “Shear strength of slabs with shear reinforcement.”, ACI, Farmington Hills, MI, 785–816.
Hillerborg, A. (1985). “The theoretical basis of a method to determine the fracture energy of concrete.” Mater. Struct., 18(4), 291–296.
Islam, S., and Park, R. (1976). “Tests on slab-column connections with shear and unbalanced flexure.” J. Struct. Div., 102(3), 549–568.
Kang, T. H.-K., and Wallace, J. W. (2005). “Dynamic responses of flat plate systems with shear reinforcement.” ACI Struct. J., 102(5), 763–773.
Langohr, P. H., Ghali, A., and Dilger, W. H. (1976). “Special shear reinforcement for concrete flat plates.” ACI J., 73(3), 141–146.
Lee, J., and Fenves, G. L. (1998). “Plastic-damage model for cyclic loading of concrete structures.” J. Eng. Mech., 892–900.
Liu, J., Tian, Y., and Orton, S. L. (2015). “Resistance of flat-plat buildings against progressive collapse. II: System response.” J. Struct. Eng., 04015054.
Lubliner, J., Oliver, J., Oller, S., and Oñate, E. (1989). “A plastic-damage model for concrete.” Int. J. Solids Struct., 25(3), 299–326.
Mamede, S. N. F., Ramos, A., and Faria, D. (2013). “Experimental and parametric 3D nonlinear finite element analysis on punching shear of flat slabs with orthogonal reinforcement.” Eng. Struct., 48(38), 442–457.
Megally, S., and Ghali, A. (2000). “Seismic behavior of edge column-slab connections with stud shear reinforcement.” ACI Struct. J., 97(1), 53–60.
Menétrey, P. (1994). “Numerical analysis of punching failure in reinforced concrete structures.” Ph.D. thesis, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
Moe, J. (1961). “Shearing strength of reinforced concrete slabs and footings under concentrated loads.”, Portland Cement Association, Skokie, IL.
Muttoni, A. (2008). “Punching shear strength of reinforced concrete slabs without transverse reinforcement.” ACI Struct. J., 105(4), 440–450.
Negele, A., Eligehausen, R., Ožbolt, J., and Polak, M. A. (2007). “Finite-element simulations on punching tests of shear retrofitted slab-column connections.” Proc., IA-FraMCoS-6: Int. Association of Fracture Mechanics for Concrete and Concrete Structures, Taylor & Francis, London, 911–918.
Ožbolt, J., Vocke, H., and Eligenhausen, R. (2000). “Three-dimensional numerical analysis of punching failure.” Proc., Int. Workshop on Punching Shear Capacity of RC Slabs, Royal Institute of Technology, Dept. of Structural Engineering, Stockholm, Sweden, 65–74.
Pan, A. D., and Moehle, J. P. (1992). “An experimental study of slab-column connections.” ACI Struct. J., 89(6), 626–638.
Polak, M. A. (2005). “Shell finite element analysis of RC plates supported on columns for punching shear and flexure.” Int. Comput.-Aided Eng. Software, 22(4), 409–428.
Rankin, G. I. B., and Long, A. E. (1987). “Predicting the punching strength of conventional slab-column specimens.” Proc. Inst. Civ. Eng., 82(1), 327–346.
Regan, P. E. (1974). “Design for punching shear.” Struct. J., 52(6), 197–207.
Reis, N., de Brito, J., Correia, J. R., and Arruda, M. R. T. (2015). “Punching behaviour of concrete slabs incorporating coarse recycled concrete aggregates.” Eng. Struct., 100(20), 238–248.
Robertson, I. N., Kawai, T., Lee, J., and Enomoto, B. (2002). “Cyclic testing of slab-column connections with shear reinforcement.” ACI Struct. J., 99(5), 605–613.
Seible, F., Ghali, A., and Dilger, H. W. (1980). “Preassembled shear reinforcing units for flat plates.” ACI J., 77(1), 28–35.
Shu, J., Fall, D., Plos, M., Zandi, K., and Lundgren, K. (2015). “Development of modelling strategies for two-way RC slabs.” Eng. Struct., 101(42), 439–449.
Staller, M. A. (2000). “Analytical studies and numerical analysis of punching shear failure in reinforced concrete slabs.” Proc., Int. Workshop on Punching Shear Capacity of RC Slabs, Royal Institute of Technology, Dept. of Structural Engineering, Stockholm, Sweden, 376–374.
Tan, Y., and Teng, S. (2005). “Interior slab-rectangular column connections under biaxial lateral loadings.”, Punching Shear in Reinforced Concrete Slabs, Farmington Hills, MI, 147–174 .
Wosatko, A., Pamin, J., and Polak, M. A. (2015). “Application of damage-plasticity models in finite element analysis of punching shear.” Comput. Struct., 151(11), 73–85.
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© 2016 American Society of Civil Engineers.
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Received: Nov 13, 2015
Accepted: May 3, 2016
Published online: Jul 13, 2016
Published in print: Dec 1, 2016
Discussion open until: Dec 13, 2016
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