Modelling of Shear-critical, Lightly Reinforced Concrete T-beams with Externally Bonded CFRP using ATENA Science
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https://doi.org/10.9744/ced.25.2.67-77
Keywords:
ATENA, CFRP, shear, strengthening, T-beams, U-wrapAbstract
This paper presents the finite element modelling of shear-critical reinforced concrete beams strengthened with U-wrapped CFRP fabrics using ATENA. Fracture-plastic constitutive models, implemented in the context of smeared crack and crush-band approach, were employed to represent the nonlinear behaviours of concrete. CFRP U-wraps were modelled as smeared reinforcement and bonded to the concrete surface using an interface element, considering appropriate bond properties. To this end, two large lightly reinforced concrete T-beams from tests undertaken by Brindley in 2018 were analysed and predictions of the load-deflection response and failure mode are presented to demonstrate the accuracy of the modelling. Moreover, parametric analyses were performed to assess the effectiveness of CFRP U-wraps for strengthening deteriorated members. It is shown that the response of the beams can be predicted accurately, capturing successfully the brittle shear failure mode observed experimentally. It is also shown that CFRP U-wraps are useful for reducing the brittleness of shear-critical beams.
References
Kalfat, R. and R. Al-Mahaidi, Numerical and Experimental Validation of FRP Patch Anchors used to Improve the Performance of FRP Laminates Bonded to Concrete, Journal of Composites for Construction, 18(3), 2014, p. A4013008.
Foster, R. M., Brindley, M., Lees, J. M., Ibell, T. J., Morley, C. T., Darby, A. P., and Evernden, M. C., Experimental Investigation of Reinforced Concrete T-Beams Strengthened in Shear with Externally Bonded CFRP Sheets, Journal of Composites for Construction, 21(2), 2017, pp. 1-13.
Mai, A.D., Sheikh, M.N., Yamakado, K., and Hadi, M.N.S., Nonuniform CFRP Wrapping to Prevent Sudden Failure of FRP Confined Square RC Columns, Journal of Composite for Construction, 24(6), 2020, p. 04020063.
Ke, Y., Zhang, S.S., Smith, S.T., and Yu, T., Novel Embedded FRP Anchor for RC Beams Strengthened in Flexure with NSM Bars: Concept and Behavior, Journal of Composite for Construction, 27(1), 2020, p. 04022093.
Valerio, P., Ibell, T.J., and Darby, A.P., Deep Em-bedment of FRP for Concrete Shear Strengthening, Proceedings of the Institution of Civil Engineers-Structures and Buildings, 162(5), 2009, pp. 311-321.
Tran, C.T.N., Nguyen, X.H., Nguyen, H.C., and Le, D.D., Shear Performance of Short-span FRP-reinforced Concrete Beams Strengthened with CFRP and TRC, Engineering Structures, 242, 2021, p.112548.
Tatar, J., Viniarski, C., Ishfaq, M., Harries, K.A., and Head, M., Effect of U-Wrap Anchors on Flexural Behavior of Reinforced Concrete Beams Flexurally Strengthened with Externally Bonded CFRP Sheets, Journal of Composites for Construction, 27(1), 2023, p. 04022099.
Červenka, J. and Papanikolaou, V.K., Three Dimensional Combined Fracture–Plastic Material Model for Concrete, International Journal of Plasticity, 24(12), 2008, pp. 2192-2220.
Červenka, J., Červenka, V., and Laserna, S., On Crack Band Model in Finite Element Analysis of Concrete Fracture in Engineering Practice, Engineering Fracture Mechanics, 197, 2018, pp. 27-47.
Vecchio, F.J., Disturbed Stress Field Model for Reinforced Concrete: Formulation, Journal of Structural Engineering, 126(9), 2000, pp. 170-177.
Tambusay, A., Suprobo, P., Suryanto, B., and Don, W., Application of Nonlinear Finite Element Analysis on Shear-Critical Reinforced Concrete Beams, Journal of Engineering and Technological Sciences, 53(4), 2021, pp. 210408.
Don, W., Suryanto, B., Tambusay, A., and Suprobo, P., Forensic Assessments of the Influence of Reinforcement Detailing in Reinforced Concrete Half-Joints: A Nonlinear Finite Element Study, Structures, 38, 2022, pp. 689-703.
Červenka, V., Jendele, L., and Červenka, J., ATENA Program Documentation–Part 1: Theory, Červenka Consulting, Prague, 2018.
Brindley, M., Shear Assessment and Strengthening of Reinforced Concrete T-beams with Externally Bonded CFRP Sheets, PhD Thesis, University of Bath, 2018.
BS 4449:2005+A3:2016, Steel for the Reinforcement of Concrete – Weldable Reinforcing Steel – Bar, Coil and Decoiled Product – Specification, British Standards Institution, 2016.
Menetrey, P. and Willam, K.J., Triaxial Failure Criterion for Concrete and its Generalization, ACI Structural Journal, 92(3), 1995, pp. 311-318.
Hordijk, D.A., Local Approach to Fatigue of Concrete, PhD Thesis, Delft University of Tech-nology, 1991.
Chong, K., Suryanto, B., Tambusay, A., and Suprobo, P., Nonlinear Analysis of Reinforced Geopolymer Concrete Beams, Civil Engineering Dimension, 24(1), 2022, pp. 1-10.
Don, W., Chong, K., Aitken, M, Tambusay, A., Suryanto, B., and Suprobo, P., Influence of Link Spacing on Concrete Shear Capacity: Experimental Investigations and Finite Element Studies, IOP Conference Series: Materials Science and Engineering, 930(1), 2020, p. 012052.
Kolmar, W., Beschreibung der Kraftuebertra¬gung Über Risse in Nichtlinearen Finite-Element-Berechnungen von Stahlbetontragwerken, PhD Thesis, Darmstadt University of Technology, Germany, 1986.
Vecchio, F.J. and Collins, M.P., The Modified Compression-Field Theory for Reinforced Concrete Elements Subjected to Shear, ACI Journal, 83(2), 1986, pp. 219-231.
Sajdlová. T., ATENA Program Documentation Part 4-9 ATENA Science - GiD Strengthening of Concrete Structures, Červenka Consulting, Prague, 2016.
Al-Saoudi, A.N., Al-Mahaidi, R., Kalfat, R., and Červenka, J., Finite Element Investigation of the Fatigue Performance of FRP Laminates Bonded to Concrete, Composite Structures, 208, 2019, pp. 322-337.
Al-Saoudi, A.N., Investigation of the Performance of Fibre Reinforced Polymers Anchorage Devices in Strengthening Concrete Bridge Beams Sub¬jected to Fatigue Loading, PhD Thesis, Swinburne University of Technology, 2018.
Cui, S., Wang, J., Shi, L., and Liu, Y., Test and FEM Analysis of Debonding Failure of RC Beam Strengthened with CFRP, Journal of Reinforced Plastics and Composites, 28(17), 2009, pp. 2151-2160.
Al-Saoudi, A.N., Kalfat, R., Al-Mahaidi, R., Cervenka, J., and Pryl, D., Numerical and Experimental Investigation into the Fatigue Life of FRP Bonded to Concrete and Anchored with Bidirectional Fabric Patches, Engineering Structures, 239, 2021, p. 112335.
Brena, S.F., Bramblett, R.M., Wood, S.L., and Kreger, M.E., Increasing Flexural Capacity of Reinforced Concrete Beams using Carbon Fiber-Reinforced Polymer Composites, ACI Structural Journal, 100(1). 2003, pp. 36-46.
Pham, H.B. and Al-Mahaidi, R., Prediction Models for Debonding Failure Loads of Carbon Fiber Reinforced Polymer Retrofitted Reinforced Concrete Beams, Journal of Composites for Construction, 10(1), 2006, pp. 48-59.
Freddi, F. and Savoia, M., Analysis of FRP-Concrete Debonding via Boundary Integral Equations, Engineering Fracture Mechanics, 75(6), 2008, pp. 1666-1683.
Wu, Y.F., Wang, Z., Liu, K., He, W., and Wang, Z., Numerical Analyses of Hybrid-Bonded FRP Strengthened Concrete Beams, Computer-aided Civil and Infrastructure Engineering, 24(5), 2009, pp. 371-384.
ACI 447.1R-18, Report on Modeling Techniques Used in Finite Element Simulations of Concrete Structures Strengthened Using Fiber-Reinforced Polymer (FRP) Materials, American Concrete Institute, 2018.
Lu, X.Z., Teng, J.G., Ye, L.P., and Jiang, J J., Bond-Slip Models for FRP Sheets/Plates Bonded to Concrete, Engineering Structures, 27(6), 2005, pp. 920-937.
Yao, J., Teng, J.G., and Chen, J.F., Experi-mental Study on FRP-to-Concrete Bonded Joints, Composites Part B: Engineering, 36(2), 2005, pp 99-113.
Wang, J., Cohesive Zone Model of Intermediate Crack-Induced Debonding of FRP-Plated Con¬crete Beam, International Journal of Solids and Structures, 43(21), 2006, pp. 6630-6648.
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Copyright (c) 2023 Asdam Tambusay, Fillbert Hanselly Njoko, Andrew Jamieson, Benny Suryanto, Priyo Suprobo
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