پیوندهای مفید
آمار
| تعداد نشریات | 22 |
| تعداد شمارهها | 709 |
| تعداد مقالات | 10,213 |
| تعداد مشاهده مقاله | 71,680,429 |
| تعداد دریافت فایل اصل مقاله | 63,496,491 |
Determining the Optimal Percentage of FRP Composite Bars in Hybrid Reinforced Beams | ||
| Journal of Rehabilitation in Civil Engineering | ||
| مقاله 3، دوره 14، شماره 2 - شماره پیاپی 42، مرداد 2026 اصل مقاله (2 M) | ||
| نوع مقاله: Regular Paper | ||
| شناسه دیجیتال (DOI): 10.22075/jrce.2025.2249 | ||
| نویسندگان | ||
| Kaveh Karami1؛ Jalil Shafaei1؛ Mojtaba Lezgy Nazargah* 2 | ||
| 1Faculty of Civil Engineering, Shahrood University of Technology, Shahrood 3619995161-316, Iran | ||
| 2Department of Civil Engineering, Faculty of Engineering, Hakim Sabzevari University, Sabzevar 9617976487-397, Iran | ||
| تاریخ دریافت: 04 بهمن 1403، تاریخ بازنگری: 20 اسفند 1403، تاریخ پذیرش: 21 خرداد 1404 | ||
| چکیده | ||
| Reinforcing the concrete beams with the combination of steel and FRP composite bars improves the structural performance and long-term durability of these members significantly. Although hybrid steel-FRP (HSF) reinforced concrete (RC) beams have better structural behaviors than those members reinforced only with pure steel or pure FRP composite bars, no comprehensive research has been reported on determining the optimal percentage of steel and FRP composite bars in RC beams yet. Filling this gap is the main aim of the present study. To reach this aim, the sectional analysis of a series of HSF-reinforced concrete beams under different loading stages has been carried out, and the moment-curvature relationships in considered beams have been determined. Different values have been considered for the percentage of tensile steel, FRP composite, and compressive steel bars. Various values are also considered for the compressive strength of concrete, the yield stress of steel bars, and the mechanical properties of the FRP composite bars. To find suitable structural performance, the moment-curvature curves of concrete beams reinforced with HSF bars were compared with each other. Reducing residual deformations as well as increasing ductility are chosen as a criterion for determining the optimal percentage of steel and composite bars and other design parameters of the HSF-reinforced concrete beams. Results of this research show that the use of the optimum percentage of steel and FRP bars improves the flexural capacity, the desired ductility, and the corrosion resistance of the RC beams, and meanwhile, reduces the effects of residual deformations. | ||
تازه های تحقیق | ||
| ||
| کلیدواژهها | ||
| HSF-reinforced concrete beams؛ FRP composite bar؛ Steel bar؛ Residual deformation؛ Ductility | ||
| مراجع | ||
|
[1] Moazzenchi S, Oskouei AV. A Comparative Experimental Study on the Flexural Behavior of Geopolymer Concrete Beams Reinforced with FRP Bars. J Rehabil Civ Eng 2023;11:21–42. https://doi.org/10.22075/JRCE.2022.25157.1569.
[2] Shirmardi MM, Mohammadizadeh MR. Numerical Study on the Flexural Behaviour of Concrete Beams Reinforced by GFRP Bars. J Rehabil Civ Eng 2019;7:88–99. https://doi.org/10.22075/JRCE.2018.14701.1268.
[3] Gopal R, Krishnachandran S. Flexural behaviour of RC beams substituted with GFRP reinforcement in aggressive environments. Mag Concr Res 2021;73:865–78. https://doi.org/10.1680/jmacr.19.00285.
[4] Moolaei S, Sharbatdar MK, Kheyroddin A. Experimental evaluation of flexural behavior of HPFRCC beams reinforced with hybrid steel and GFRP bars. Compos Struct 2021;275:114503. https://doi.org/10.1016/j.compstruct.2021.114503.
[5] Fakharian P, Nouri Y, Ghanizadeh AR, Jahanshahi FS, Naderpour H, Kheyroddin A. Bond strength prediction of externally bonded reinforcement on groove method (EBROG) using MARS-POA. Compos Struct 2024;349:118532.
[6] Pilakoutas K, Guadagnini M, Neocleous K, Matthys S. Design guidelines for FRP reinforced concrete structures. Proc Inst Civ Eng Struct Build 2011;164:255–63. https://doi.org/10.1680/stbu.2011.164.4.255.
[7] Yang Y, Pan D, Wu G, Cao D. A new design method of the equivalent stress–strain relationship for hybrid (FRP bar and steel bar) reinforced concrete beams. Compos Struct 2021;270:114099. https://doi.org/10.1016/j.compstruct.2021.114099.
[8] Hussein A, Huang H, Okuno Y, Wu Z. Experimental and numerical parametric study on flexural behavior of concrete beams reinforced with hybrid combinations of steel and BFRP bars. Compos Struct 2022;302:116230. https://doi.org/10.1016/j.compstruct.2022.116230.
[9] Johnson J, Xu M, Jacques E. Predicting the self-centering behavior of hybrid FRP-steel reinforced concrete beams under blast loading. Eng Struct 2021;247:113117. https://doi.org/10.1016/j.engstruct.2021.113117.
[10] Nouri Y, Ghanizadeh AR, Safi Jahanshahi F, Fakharian P. Data-driven prediction of axial compression capacity of GFRP-reinforced concrete column using soft computing methods. J Build Eng 2025;101:111831. https://doi.org/10.1016/J.JOBE.2025.111831.
[11] Taerwe L. FRP bars and the elimination of reinforcement corrosion in concrete structures. Non-Metallic Reinf. Concr. Struct., CRC Press; 2004, p. 245–52.
[12] Tan K. Behavior of hybrid FRP-steel reinforced concrete beams. Third Int. Symp. Non-Metalic Reinf. Concr. Struct., Sapporo Japan: 1997, p. 479–87.
[13] Antonietta AM, Luciano O. Structural Performances of Concrete Beams with Hybrid (Fiber-Reinforced Polymer-Steel) Reinforcements. J Compos Constr 2002;6:133–40. https://doi.org/10.1061/(ASCE)1090-0268(2002)6:2(133).
[14] Nouri Y, Ghanbari MA, Fakharian P. An integrated optimization and ANOVA approach for reinforcing concrete beams with glass fiber polymer. Decis Anal J 2024;11:100479. https://doi.org/10.1016/j.dajour.2024.100479.
[15] Leung HY, Balendran R V. Flexural behaviour of concrete beams internally reinforced with GFRP rods and steel rebars. Struct Surv 2003;21:146–57. https://doi.org/10.1108/02630800310507159.
[16] Qu W, Zhang X, Huang H. Flexural Behavior of Concrete Beams Reinforced with Hybrid (GFRP and Steel) Bars. J Compos Constr 2009;13:350–9. https://doi.org/10.1061/(asce)cc.1943-5614.0000035.
[17] Sun ZY, Yang Y, Qin WH, Ren ST, Wu G. Experimental study on flexural behavior of concrete beams reinforced by steel-fiber reinforced polymer composite bars. J Reinf Plast Compos 2012;31:1737–45. https://doi.org/10.1177/0731684412456446.
[18] El Refai A, Abed F, Al-Rahmani A. Structural performance and serviceability of concrete beams reinforced with hybrid (GFRP and steel) bars. Constr Build Mater 2015;96:518–29. https://doi.org/10.1016/j.conbuildmat.2015.08.063.
[19] Pang L, Qu W, Zhu P, Xu J. Design Propositions for Hybrid FRP-Steel Reinforced Concrete Beams. J Compos Constr 2016;20:4015086. https://doi.org/10.1061/(asce)cc.1943-5614.0000654.
[20] Qin R, Zhou A, Lau D. Effect of reinforcement ratio on the flexural performance of hybrid FRP reinforced concrete beams. Compos Part B Eng 2017;108:200–9. https://doi.org/10.1016/j.compositesb.2016.09.054.
[21] Lau D, Pam HJ. Experimental study of hybrid FRP reinforced concrete beams. Eng Struct 2010;32:3857–65. https://doi.org/10.1016/j.engstruct.2010.08.028.
[22] Mustafa SAA, Hassan HA. Behavior of concrete beams reinforced with hybrid steel and FRP composites. HBRC J 2018;14:300–8. https://doi.org/10.1016/j.hbrcj.2017.01.001.
[23] Sun Z, Fu L, Feng D-C, Vatuloka AR, Wei Y, Wu G. Experimental study on the flexural behavior of concrete beams reinforced with bundled hybrid steel/FRP bars. Eng Struct 2019;197:109443. https://doi.org/https://doi.org/10.1016/j.engstruct.2019.109443.
[24] Kim S, Kim S. Flexural behavior of concrete beams with steel bar and FRP reinforcement. J Asian Archit Build Eng 2019;18:94–102. https://doi.org/10.1080/13467581.2019.1596814.
[25] Ge W, Wang Y, Ashour A, Lu W, Cao D. Flexural performance of concrete beams reinforced with steel–FRP composite bars. Arch Civ Mech Eng 2020;20:56. https://doi.org/10.1007/s43452-020-00058-6.
[26] Liu S, Wang X, Ali YMS, Su C, Wu Z. Flexural behavior and design of under-reinforced concrete beams with BFRP and steel bars. Eng Struct 2022;263:114386. https://doi.org/10.1016/j.engstruct.2022.114386.
[27] Hognestad E, Hanson N, McHenry D. Concrete stress distribution in ultimate strength design. ACI J 1955;52:455–480.
[28] Zhou B, Wu R-Y, Liu Y, Zhang X, Yin S. Flexural Strength Design of Hybrid FRP-Steel Reinforced Concrete Beams. Materials (Basel) 2021;14. https://doi.org/10.3390/ma14216400.
[29] ACI 440.11-22: Building Code Requirements for Structural Concrete Reinforced with Glass Fiber-Reinforced Polymer (GFRP) Bars—Code and Commentary. 2022.
[30] ACI 318-19(22): Building Code Requirements for Structural Concrete. 2022.
[31] Moehle J. Seismic Design of Reinforced Concrete Buildings. 1st Editio. New York: McGraw-Hill Education; 2015.
[32] Kara IF, Ashour AF, Köroğlu MA. Flexural behavior of hybrid FRP/steel reinforced concrete beams. Compos Struct 2015;129:111–21. https://doi.org/10.1016/j.compstruct.2015.03.073. | ||
|
آمار تعداد مشاهده مقاله: 776 تعداد دریافت فایل اصل مقاله: 386 |
||