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Nonlinear finite element analysis of punching shear strength of reinforced concrete slabs supported on L-shaped columns
Qing Zhang
Department of Civil and Environmental Engineering (CEE); University of Waterloo; 200 University Avenue West, Waterloo, Ontario; (Kanada)
Graeme J. Milligan
gjmillig@uwaterloo.caDepartment of Civil and Environmental Engineering (CEE); University of Waterloo; 200 University Avenue West, Waterloo, Ontario; (Kanada)
Maria Anna Polak
Department of Civil and Environmental Engineering (CEE); University of Waterloo; 200 University Avenue West, Waterloo, Ontario; (Kanada)
https://orcid.org/0000-0002-1653-3915
Abstrakt
Most current concrete design codes include provisions for punching shear of reinforced concrete slabs supported on columns with L, T, and cruciform shapes. Reference studies verifying the accuracy of these code provisions are typically not provided. Empirical data of punching failures of slabs supported on columns with L, T, and cruciform shapes are limited due to the cost and time required to test specimens with slab thicknesses and column sizes commonly used in practice. In this paper, the punching shear behaviour of five interior L-shaped slab-column connections, one without a slab opening and four with slab openings, subjected to static concentric loading are analyzed using a plasticity-based nonlinear finite element model (FEM) in ABAQUS. The FEM is similar to models previously calibrated at the University of Waterloo and are calibrated considering nine slabs that are tested to study the impact of column rectangularity on the punching shear behaviour of reinforced concrete slabs. The finite element analysis results indicate that shear stresses primarily concentrate around the ends of the L, and that current code predictions from ACI 318-19 and Eurocode 2 may be unconservative due to the assumed critical perimeters around L-shaped columns.
Instytucje finansujące
This work was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) and the University of Waterloo.
Słowa kluczowe:
punching shear, finite element analysis, L-shaped columns, slab openingsBibliografia
FIB, "Punching of structural concrete slabs", fib Bulletin 12, 2001.
Google Scholar
Ospina C. E., Birkle G., Widianto Y. W. et al., "NEES: ACI 445 Punching Shear Collected Databank", 2015.
Google Scholar
Wang Z.-j., Liu W.-q., Wang J., Jing Y.-s. and Xu C., "Shaking table test for a mid-highrise big-bay RC frame model", Earthquake Engineering and Engineering Vibration, vol. 19, no. 3, 1999, pp. 59-64 (in Chinese).
Google Scholar
Liu W. and Huang C., "Experimental investigation on punching shear behaviour of concrete slab-nonrectangular column connections", Journal of Building Structures, vol. 25, no. 4, 2004, pp. 26-33, (in Chinese).
Google Scholar
ACI Committee 318, Building Code Requirements for Structural Concrete (ACI 318-19) and Commentary on Building Code Requirements for Structural Concrete (ACI 318R-19), Farmington Hills, MI: American Concrete Institute, 2019.
Google Scholar
European Committee For Standardization, Eurocode 2: Design of concrete structures - Part 1-1: General Rules and Rules for Buildings, Brussels, Belgium, 2004.
Google Scholar
Genikomsou A. S., Milligan G. J. and Polak M. A., "Modeling Parameters in Punching Shear Finite Element Analysis of Concrete Slabs", ACI Special Publication, vol. 328, 2018, pp. 12.1-12.24.
Google Scholar
Hawkins N. M., Fallsen H. B. and Hinojosa R. C., "Influence of Column Rectangularity on the Behavior of Flat Plate Structures", ACI Special Publication, vol. 30, 1971, pp. 127-146.
Google Scholar
ASCE-ACI Committee 426, "The shear strength of reinforced concrete members – slabs", Journal of the Structural Divison, vol. 100, no. 8, 1974, pp. 1543-1591.
DOI: https://doi.org/10.1061/JSDEAG.0003838
Google Scholar
Milligan G. J. and Polak M. A., "Finite Element Investigation on the Effect of Column Rectangularity on Punching Shear Strength of Concrete Slabs, The International Federation for Structural Concrete", in fib Congress, Melbourne, 2018, p. 12.
Google Scholar
Milligan G. J. and Polak M. A., "Finite Element Analysis of Shear Behaviour of Concrete Slabs Partially Supported on Walls", in Concrete innovations in materials, design and structures: proceedings of the 2019 fib symposium, held in Krakow, Poland, May 27–29, 2019, Kraków, 2019, pp. 1803-1810.
Google Scholar
Petersson E., Crack Growth and Development of Fracture Zones in Plain Concrete and Similar Materials. Division of Building Materials, LTH, Lund, Sweden, 1981.
Google Scholar
Dassault Systemes Simulia Corp., ABAQUS Analysis User's Manual 6.12-3, Providence, RI, USA, 2012.
Google Scholar
Genikomsou A. S. and Polak M. A., "Finite element analysis of punching shear of concrete slabs using damaged plasticity model in ABAQUS", Engineering Structures, vol. 98, 2015, pp. 38-48. https://doi.org/10.1016/j.engstruct.2015.04.016
DOI: https://doi.org/10.1016/j.engstruct.2015.04.016
Google Scholar
Zhang, Q., Milligan, G. J. i Polak, M. A. (2020) „Nonlinear finite element analysis of punching shear strength of reinforced concrete slabs supported on L-shaped columns”, Budownictwo i Architektura, 19(4), s. 115–125. doi: 10.35784/bud-arch.2122.
Autorzy
Qing ZhangDepartment of Civil and Environmental Engineering (CEE); University of Waterloo; 200 University Avenue West, Waterloo, Ontario; Kanada
Autorzy
Graeme J. Milligangjmillig@uwaterloo.ca
Department of Civil and Environmental Engineering (CEE); University of Waterloo; 200 University Avenue West, Waterloo, Ontario; Kanada
Autorzy
Maria Anna PolakDepartment of Civil and Environmental Engineering (CEE); University of Waterloo; 200 University Avenue West, Waterloo, Ontario; Kanada
https://orcid.org/0000-0002-1653-3915
Statystyki
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Licencja
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