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Improving the Punching Shear Strength of RC Slabs by FRP and Steel Sheets | ||
| Journal of Rehabilitation in Civil Engineering | ||
| مقاله 1، دوره 4، شماره 1 - شماره پیاپی 7، اردیبهشت 2016، صفحه 1-17 اصل مقاله (1.76 M) | ||
| نوع مقاله: Regular Paper | ||
| شناسه دیجیتال (DOI): 10.22075/jrce.2016.487 | ||
| نویسندگان | ||
| Reza Aghayari* 1؛ Mohammad Moradi2 | ||
| 1Assistant Professor, Razi University, Kermanshah, Iran | ||
| 2M.Sc., Structural Engineering, Razi University, Kermanshah, Iran | ||
| تاریخ دریافت: 22 تیر 1395، تاریخ بازنگری: 01 شهریور 1395، تاریخ پذیرش: 25 آبان 1395 | ||
| چکیده | ||
| This paper deals with the modeling of punching shear failure in reinforced concrete slabs using nonlinear finite element analysis. The 3D finite element analyses (FEA) were performed with the appropriate modeling of element size and mesh, and the constitutive modeling of concrete. The FE numerical models are validated by comparing with the experimental results obtained from tested specimens and previous research. One slab served as a control without any modification while three slabs were strengthened. The ultimate behavior of FRP strengthened RC flat slabs under a centrally applied load. Each method of repair or strengthening is reviewed with emphasis on its performance with respect to the application details. The punching shear capacity, stiffness, ductility were investigated. In addition, the analytical results were compared with the predictions using the provision of ACI 318-08. The results showed that for control slab and strengthened specimens an increase varied from 4% to 105% in punching shear capacity is determined. | ||
| کلیدواژهها | ||
| RC flat slab؛ Strengthening؛ FRP؛ Punching shear | ||
| مراجع | ||
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[1] Binici, B. and Bayrak, O. (2003). "Punching Shear Strengthening of Reinforced Concrete Flat Plates Using Carbon Fiber Reinforced Polymers." Journal of Structural Engineering., ASCE, 129, (9), 1173-1182.
[2] El-Salakawy E., Polak M.A., Soudki K.A. (2003), “ New strengthening technique for concrete slab–column connections.” ACI Structural Journal, 100 (3), 297-304.
[3] Esfahani, M., Kianoush, M., Moradi, A. (2009). “ Punching shear strength of interior slab-column connections strengthened with carbon fiber reinforced polymer sheets.”, Engineering Structure, 31(7):1535-1542
[4] Stark A., Binici B., and, Bayrak O., (2005), “Seismic Upgrade of Reinforced Concrete Slab-Column Connections Using Carbon Fiber-Reinforced Polymers” ACI Structural Journal, 102, (2), 324-333.
[5] El-Salakawy E., Soudki KA., Polak MA. (2004), “Punching shear behavior of flat slabs strengthened with fiber reinforced polymer laminates.” Journal of Composites for Construction, 8(5), 384–92.
[6] Nguyen-Minh L., Rovnak M., Tran-Quoc T., Nguyenkim K., (2011), “Punching Shear Resistance of Steel Fiber Reinforced Concrete Flat Slabs.”, Procedia Engineering, 14(2011), 1830-1837.
[7] Amen Agbossou, Laurent Michel, Manuel Lagache, Patrice Hamelin (2008), “Strengthening slabs using externally-bonded strip Composites: Analysis of concrete covers on the strengthening.”, Composites Part B Engineering, 39(7), 1125-1135
[8] Maya L.F., Fernandez Ruiz M., Muttoni A., Foster S.J., (2012), “Punching shear strength of steel fiber reinforced concrete slabs”, Engineering Structures, 40 (July 2012), 83-94.
[9] Ibrahim M. Metwally, (2013), “Prediction of punching shear capacities of two-way concrete slabs reinforced with FRP bars,” HBRC Journal, 9(2), 125-133.
[10] Koppitz R., Kenel A., Keller T., “Punching Shear strengthening of flat slabs using prestressed carbon fiber-reinforced polymer straps,” Engineering Structures, 76(October 2014), 283-294.
[11] Meisami, M. H., Mostofinejad D., Nakamura N., (2015), “Strengthening of flat slabs with FRP fan for punching shear,” Composite Structures, 119 (2015), 305–314.
[12] Husain A., Aref A. Abadel, Tarek A., Yousef A., (2015), “Effect of CFRP and TRM Strengthening of RC Slabs on Punching Shear Strength,” Latin American Journal of Solids and Structures, 12(9), 1616-1640.
[13] Ruiz F. M., Muttoni A., (2009), “Application of critical shear crack theory to punching of reinforced concrete slabs with transverse reinforcement”, ACI Structural Journal, 106(4), 485–94.
[14] Micallef K, Sagaseta J, Ruiz FM, Muttoni A., (2014), “ Assessing punching shear failure in reinforced concrete at slabs subjected to localized impact loading.” International Journal of Impact Engineering, 71, 17–33.
[15] ACI Committee 318, (2008), “Building Code Requirements for Structural Concrete (ACI 318-08) and Commentary (318R-08),” American Concrete Institute, Farmington Hills, Mich., 443.
[16] Velizy-Villacoublay, (2010), ABAQUS, Version 6.10; Dassault Systemes.
[17] Widianto, Bayrak O., Jiras J.O., and, Tian Y. (2010), “Seismic Rehabilitation of Slab-Column Connections.” ACI Structural Journal, 107, (2), 237-247. | ||
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