Crack-based assessment; Deep beams; Residual shear capacity; Structural monitoring; Crack measurement; Critical loading; Deep beam; Residual capacity; Shear capacity; Shear failure; Single crack; Civil and Structural Engineering
Abstract :
[en] Deep beams in concrete infrastructure often exhibit wide diagonal shear cracks that extend from the supports to concentrated loads. A key problem in these cases is to assess the residual capacity against shear failure across such cracks. This problem can be solved by establishing a relationship between the opening of the crack and the residual capacity, expressed in percentage of the shear strength. The current study establishes such a relationship that requires minimal input information. The input consists of only three on-site measurements: the depth of the critical loading zone (CLZ) determined by the diagonal crack; the angle of the crack in the CLZ; and a single crack measurement: the vertical crack displacement in the vicinity of the CLZ. The physical basis of the proposed crack-based assessment (CBA) is established with the help of a targeted test and advanced modelling. It is shown that only three input parameters and two simple closed-form equations are sufficient to accurately evaluate the residual capacity of diagonally cracked deep beams with various properties. Furthermore, in the presence of loading and unloading cycles, the proposed CBA reveals how close the member has come to shear failure throughout its entire service life. These properties render the CBA not only suitable for rapid assessment, but also for long-term monitoring of deep beams with diagonal cracks.
Disciplines :
Civil engineering
Author, co-author :
Mihaylov, Boyan ; Université de Liège - ULiège > Département ArGEnCo > Structures en béton
Fathalla, Eissa; Department of ArGEnCo, University of Liège, Liège, Belgium ; Structural Engineering Department, Cairo University, Giza, Egypt
Trandafir, Alexandru ; Université de Liège - ULiège > Département ArGEnCo > Structures en béton ; Technical University of Civil Engineering Bucharest, Bucharest, Romania
Language :
English
Title :
Rapid crack-based assessment of deep beams based on a single crack measurement
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Bibliography
Bracci, J.M., Keating, P.B., Hueste, M.B.D., Cracking in RC Bent Caps. Report No. 1851-1, 2000, The Texas A&M University.
Aravinthan, T., Suntharavadivel, T.G., Effects of existing shear damage on externally posttensioned repair of bent caps. J Struc Eng 133:11 (2007), 1662–1669.
Birrcher, D., Tuchscherer, R., Huizinga, M., Bayrak, O., Wood, S.L., Jirsa, J.O., Strength and serviceability design of reinforced concrete deep beams. Report No. FHWA/TX-09/0-5253-1, 2009, The University of Texas at Austin,.
Larson, N., Gomez, E.F., Garber, D., Bayrak, O., Ghannoum, W.M., Strength and Serviceability Design of Reinforced Concrete Inverted-T Beams. Report No. FHWA/TX-13/0-6416-1, 2013, The University of Texas at Austin.
Leonhardt, F., Walther, R., “The Stuttgart Shear Tests 1961″ – A translation of the articles that appeared in Beton und Stahlbetonbau, 56(12) in 1961 and 57(2,3,6- 8) in 1962. Cement and Concrete Association Library Translation No. 111, 1964, Wexham Springs, UK, 134.
Rogowsky, D.M., MacGregor, J.G., Tests of reinforced concrete deep beams. Acids J Proc 83:4 (1986), 614–623.
Schlaich, J., Schäfer, K., Jennewein, M., Toward a consistent design of structural concrete. PCI J 32:3 (1987), 74–150.
Collins, M.P., Mitchell, D., Rational approach to shear design – the 1984 Canadian code provisions. Acids Struct J 83:6 (1986), 925–933.
Muttoni, A., Schwartz, J., Thürlimann, B., Design of concrete structures with stress fields. 1996, Birkhäuser Verlag, Basel, Switzerland, 143.
Campana, S., Fernández-Ruiz, M., Anastasi, A., Muttoni, A., Analysis of shear-transfer actions on one-way RC members based on measured cracking pattern and failure kinematics. Mag Concr Res 65 (2013), 386–404.
Huber, P., Huber, T., Kollegger, J., Investigation of the shear behavior of RC beams on the basis of measured crack kinematics. Eng Struct 113 (2016), 41–58.
Fathalla, E., Mihaylov, B., Comprehensive approach for examining shear-critical RC walls using detailed experimental measurements. Struct Conc, 2024, 10.1002/suco.202400276.
Palipana, D.K., Trandafir, A.N., Mihaylov, B.I., Proestos, G.T., Quantification of shear transfer mechanisms in reinforced concrete deep beams using measured experimental data. Eng Struct, 318, 2024, 118711.
Li, G., Liu, Q., Zhao, S., Qiao, W., Ren, X., Automatic crack recognition for concrete bridges using a fully convolutional neural network and naive Bayes data fusion based on a visual detection system. Meas Sci Technol, 31(7), 2020, 075403.
Pantoja-Rosero, B.G., dos Santos, K.M., Achanta, R., Rezaie, A., Beyer, K., Determining crack kinematics from imaged crack patterns. Constr Build Mater, 343, 2022, 128054.
Trandafir, A.N., Palipana, D.K., Proestos, G.T., Mihaylov, B.I., Framework for Crack-Based Assessment of Existing Lightly-Reinforced Concrete Deep Members. Acids Struct J 119:1 (2022), 255–266.
Trandafir, A.N., Proestos, G.T., Mihaylov, B.I., Detailed crack‐based assessment of a 4‐m deep beam test specimen. Struct Conc 24:1 (2023), 756–770.
Mihaylov, B.I., Bentz, E.C., Collins, M.P., Two-parameter kinematic theory for shear behavior of deep beams. Acids Struct J 110:3 (2013), 447–455.
Mihaylov, B., Five‐spring model for complete shear behaviour of deep beams. Struct Conc 16:1 (2015), 71–83.
Calvi, P.M., Bentz, E.C., Collins, M.P., Model for assessment of cracked reinforced concrete membrane elements subjected to shear and axial loads. Acids Struct J 115:2 (2018), 501–509.
Zaborac, J., Athanasiou, A., Salamone, S., Bayrak, O., Hrynyk, T.D., Crack-based shear strength assessment of reinforced concrete members using a fixed-crack continuum modeling approach. J Struc Eng, 146(4), 2020, 04020024.
Vecchio, F.J., Collins, M.P., The modified compression-field theory for reinforced concrete elements subjected to shear. Acids Struct J 83:2 (1986), 219–231.
Palipana, D.K., Trandafir, A.N., Mihaylov, B.I., Proestos, G.T., Framework for quantification of shear-transfer mechanisms from deep beam experiments. Acids Struct J, 119(3), 2022 May 1.
Fathalla, E., Mihaylov, B., Fatigue behavior of deep concrete beams with critical shear cracks. Struct Conc 24:6 (2023), 7314–7333.
Popovics, S., A numerical approach to the complete stress-strain curve of concrete. Cem Conc Res 3:5 (1973), 583–599.
Mihaylov, B.I., Bentz, E.C., Collins, M.P., Behavior of large deep beams subjected to monotonic and reversed cyclic shear. Acids Struct J 107:6 (2010), 726–734.
Palipana, D.K., Proestos, G.T., Behavior of shear-critical concrete deep beams monitored with digital image correlation equipment. Acids Struct J, 121(2), 2024 Mar 1.
Proestos, G.T., Palipana, D.K., Mihaylov, B.I., Evaluating the shear resistance of deep beams loaded or supported by wide elements. Eng Struct, 226, 2021 Jan 1, 111368.
Mihaylov, B.I., Hunt, B., Bentz, E.C., Collins, M.P., Three-parameter kinematic theory for shear behavior of continuous deep beams. Acids Struct J 112:1 (2015), 47–57.
Mazzotti, C., Savoia, M., Nonlinear creep damage model for concrete under uniaxial compression. J Eng Mech 129:9 (2003), 1065–1075.
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