Improvement method of calculation reinforced concrete beams on the shear strengthened FRCM system

• Autorzy: Blikharskyy Zinoviy , Vegera Pavlo , Vashkevych Rostyslav , Khmil Roman

Identyfikatory

DOI

10.2478/czoto-2020-0026

• Języki publikacji: EN

Abstrakty

EN

Determination of shear-load-bearing capacity of reinforced concrete beams (according to the current normative documents), comprises particular recommended values, which do not depend on the parameters of the sample or load. This article de-scribes the methodology for determination the shear strength with suggestions for calculation the coefficient C_Rd,c and compressed element tilt angle Ѳ while reinforced concrete elements` calculation with the use of “truss model”. In order to confirm the methodology 4 reinforced concrete beams were tested. Tests were performed in order to investigate each particular inclined section separately. Variable parameter was the relative shear span a/d, with its values a/d=2, a/d=1,5 and a/d=1. Another parameter was the usage of composite strengthening system, made for relative shear span a\d=2. Samples were tested as single-span beams subjected to short-term loading. The calculation with the use only the values, given in norms showed significant divergence of results. Using the refined parameter values provided the convergence of results within 16-29% toward overestimation of the experimental data. The composite reinforcement system calculation showed the overestimation of 23%, which is within the same limits as for the control samples.

Słowa kluczowe

EN

reinforced concrete beam; shear; shear span; FRCM strengthening; calculation

PL

belka żelbetowa; ścinanie; system FRCM; zbrojenie kompozytowe; nośność konstrukcji; trwałość konstrukcji

• Wydawca: De Gruyter
• Czasopismo: System Safety : Human - Technical Facility - Environment
• Rocznik: 2020
• Tom: Vol. 2, nr 1
• Strony: 215--222
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Blikharskyy Zinoviy

• Lviv Polytechnic National University, Ukraine

autor

Vegera Pavlo

• Lviv Polytechnic National University, Ukraine

autor

Vashkevych Rostyslav

• Lviv Polytechnic National University, Ukraine

autor

Khmil Roman

• Lviv Polytechnic National University, Ukraine

Bibliografia

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• [2] Blikharskyy, Z., Selejdak, J., Blikharskyy, Y., Khmil, R., 2019. Corrosion of Reinforce Bars in RC Constructions, System Safety: Human - Technical Facility – Environment, 1, 277-283. DOI: 10.2478/czoto-2019-0036.
• [3] Blikharskyy, Z., Vashkevych, R., Vegera, P., Blikharskyy, Y., 2020. Crack Resistance of RC Beams on the Shear, Lecture Notes in Civil Engineering, 47, 17-24. DOI: 10.1007/978-3-030-27011-7_3.
• [4] Bobalo, T., Blikharskyy, Y., Kopiika, N., Volynets, M., 2020. Serviceability of RC Beams Reinforced with High Strength Rebar’s and Steel Plate, Lecture Notes in Civil Engineering, 47, 25-33. DOI: 10.1007/978-3-030-27011-7_4.
• [5] Bobalo, T., Blikharskyy, Y., Vashkevich, R., Volynets, M., 2018. Bearing capacity of RC beams reinforced with high strength rebars and steel plate, MATEC Web of Conferences, 230, 02003. DOI: 10.1051/matecconf/201823002003
• [6] Concrete and reinforced concrete structures of heavy concrete. Design Rules: DSTU: B V.2.6-156: 2010. 2011. Minrehionbud of Ukraine, 118.
• [7] Concrete and reinforced concrete structures: DBN B.2.6 - 98: 2009. 2011. Minrehionbud of Ukraine 84.
• [8] Eurocode 2: Design of concrete structures – Part 1: General rules and rules for buildings (together with United Kingdom National Application Document). 1994 DD ENV 1992-1-1:1992, 194.
• [9] Eurocode 2: Design of concrete structures – Part 1-1: General rules for buildings. 2004. EN 1992-1-1:2004 (E), 225.
• [10] Ferrari, V. J., de Hanai, J. B., 2012. Flexural strengthening of reinforced concrete beams with carbon fibers reinforced polymer (CFRP) sheet bonded to a transition layer of high performance cement-based composite. Revista IBRACON de Estruturas e Materiais, 5(5), 596-626. DOI: 10.1590/S1983-41952012000500003
• [11] Krainskyi, P., Blikharskyy, Y., Khmil, R., Vegera, P., 2020. Crack Resistance of RC Columns Strengthened by Jacketing, Lecture Notes in Civil Engineering, 47, 195-201. DOI: 10.1007/978-3-030-27011-7_25.
• [12] Krainskyi, P., Blikharskyy, Y., Khmil, R., Blikharskyy, Z., 2018. Experimental study of the strengthening effect of reinforced concrete columns jacketed under service load level, MATEC Web of Conferences, 183, 02008. DOI: 10.1051/matecconf/201818302008.
• [13] Lobodanov, M., Vegera, P., Blikharskyy, Z., 2020. Planning Experiment for Researching Reinforced Concrete Beams with Damages, Lecture Notes in Civil Engineering, 47, 243-250. DOI: 10.1007/978-3-030-27011-7_31.
• [14] Rossini, M., Spadea, S., Nanni, A., 2019. Pedestrian bridge as clarifying example of FRP-RC/PC design, ACI: Special Publication, 333, 96-118.
• [15] Selejdak, J., Blikharskyy, Y., Khmil, R., Blikharskyy, Z., 2020. Calculation of Reinforced Concrete Columns Strengthened by CFRP, Lecture Notes in Civil Engineering, 47, 400-410. DOI: 10.1007/978-3-030-27011-7_51.
• [16] Triantafillou, T., Matthys, S., et al., 2001. Externally bonded FRP reinforcement for RC structures. Technical report, International Federation for Structural Concrete (FIB).
• [17] Vegera, P.I., Khmil, R. E., Blikharskyy, Z. Z., 2015. Optimization of the methodology of experimental research of inclined sections of reinforced concrete beams, Theory and Building Practice, 823, 38-43. (in Ukranian).

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).