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Fire Behavior of Lightweight Reinforced Concrete Deep Beams and Enhanced Structural Performance via Varied Stirrup Spacing – An Integrated Study | ||
| Journal of Rehabilitation in Civil Engineering | ||
| مقاله 9، دوره 12، شماره 3 - شماره پیاپی 35، آبان 2024، صفحه 132-151 اصل مقاله (1.92 M) | ||
| نوع مقاله: Regular Paper | ||
| شناسه دیجیتال (DOI): 10.22075/jrce.2023.31484.1889 | ||
| نویسندگان | ||
| Ali Mohammad Ali1؛ Amir H Akhaveissy* 1؛ Bahaa Abbas2 | ||
| 1Department of Civil Engineering, Faculty Engineering, Razi University, Kermanshah, Iran | ||
| 2Department of Civil Engineering, Engineering Faculty, Kerbala University, Kerbala, Iraq | ||
| تاریخ دریافت: 20 مرداد 1402، تاریخ بازنگری: 16 مهر 1402، تاریخ پذیرش: 10 دی 1402 | ||
| چکیده | ||
| The behavior of lightweight reinforced concrete deep beams (LRCDBs) under fire conditions is investigated in this study, with a specific focus on the effect of varying transverse reinforcement spacing. Four LRCDB specimens with transverse reinforcement intervals of 60 mm and 150 mm are constructed and subjected to four-point bending tests at both normal and elevated temperatures. The ultimate load-bearing capacity of the specimens is increased by 6.9% when the spacing of transverse reinforcements is reduced from 150 mm to 60 mm. Additionally, the load-bearing capacity of the specimens with 60 mm and 150 mm stirrup spacing is reduced after exposure to fire, with reductions of 16.8% and 23.6% respectively. The ultimate deflection of the mid-span of the beam is also diminished by the heat from the fire. The analysis of the specimens is performed using Abaqus software and the Finite Element Method. The obtained results exhibit a strong agreement with the experimental data, providing valuable insights into the behavior of LRCDBs during fire conditions. These insights highlight the critical importance of designing appropriate transverse reinforcement. | ||
تازه های تحقیق | ||
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| کلیدواژهها | ||
| Lightweight reinforced concrete؛ Deep beams؛ Fire condition؛ Stirrup spacing؛ Shear behavior؛ Finite element method | ||
| مراجع | ||
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[1] ACI Committee 318. Building code requirements for structural concrete (ACI 318-08) and commentary, American Concrete Institute; 2008.
[2] Kong FK. Reinforced concrete deep beams. CRC Press; 1991.
[3] Jin L, Lei Y, Song B, Jiang X, DU X. Meso-scale modelling of size effect on shear behavior of Basalt fiber reinforced concrete deep beams. Compos Struct 2023;304:116440. https://doi.org/10.1016/j.compstruct.2022.116440.
[4] Jin L, Lei Y, Yu W, Du X. Dynamic shear failure and size effect in BFRP-reinforced concrete deep beam. Eng Struct 2021;245:112951. https://doi.org/10.1016/j.engstruct.2021.112951.
[5] Si X-Y, Zhang G-Y, Zheng C, Xu C-Y, Xu H, Wang Y-L. Experimental study on shear behavior of reinforced concrete deep beams with high-strength bars under uniform load. Structures 2022;41:553–67. https://doi.org/10.1016/j.istruc.2022.05.018.
[6] Rogowsky DM, MacGregor JG. Design of reinforced concrete deep beams. Concr Int 1986;8:49–58.
[7] Abdul-Razzaq KS, Mustafa Jalil A, Asaad Dawood A. Reinforcing struts and ties in concrete continuous deep beams. Eng Struct 2021;240:112339. https://doi.org/10.1016/j.engstruct.2021.112339.
[8] Mustafa TS, Beshara FBA, Abd El-Maula AS, Fathi MG. Strut-and-tie model for FRP effectiveness in shear strengthening of RC deep beams. Eur J Environ Civ Eng 2023;27:593–608. https://doi.org/10.1080/19648189.2022.2056248.
[9] Sagar Varma Sagi M, Lakavath C, Suriya Prakash S. Effect of steel fibers on the shear behavior of Self-Compacting reinforced concrete deep Beams: An experimental investigation and analytical model. Eng Struct 2022;269:114802. https://doi.org/10.1016/j.engstruct.2022.114802.
[10] Zingoni A. Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems. London: CRC Press; 2022. https://doi.org/10.1201/9781003348443.
[11] Youssf O, Hassanli R, Mills JE, Abd Elrahman M. An experimental investigation of the mechanical performance and structural application of LECA-Rubcrete. Constr Build Mater 2018;175:239–53. https://doi.org/10.1016/j.conbuildmat.2018.04.184.
[12] Soltanabadi R, Behfarnia K. Shear strength of reinforced concrete deep beams containing recycled concrete aggregate and recycled asphalt pavement. Constr Build Mater 2022;314:125597. https://doi.org/10.1016/j.conbuildmat.2021.125597.
[13] Albidah AS. Shear behviour of metakaolin-fly ash based geopolymer concrete deep beams. Eng Struct 2023;275:115271. https://doi.org/10.1016/j.engstruct.2022.115271.
[14] Demir A, Caglar N, Ozturk H. Parameters affecting diagonal cracking behavior of reinforced concrete deep beams. Eng Struct 2019;184:217–31. https://doi.org/10.1016/j.engstruct.2019.01.090.
[15] Kopańska A, Nagrodzka-Godycka K. The influence of reinforcement on load carrying capacity and cracking of the reinforced concrete deep beam joint. Eng Struct 2016;107:23–33. https://doi.org/10.1016/j.engstruct.2015.11.001.
[16] Liu J, Mihaylov BI. A comparative study of models for shear strength of reinforced concrete deep beams. Eng Struct 2016;112:81–9. https://doi.org/10.1016/j.engstruct.2016.01.012.
[17] Chen H, Yi W-J, Hwang H-J. Cracking strut-and-tie model for shear strength evaluation of reinforced concrete deep beams. Eng Struct 2018;163:396–408. https://doi.org/10.1016/j.engstruct.2018.02.077.
[18] Yang K-H, Ashour AF. Strut-and-Tie Model Based on Crack Band Theory for Deep Beams. J Struct Eng 2011;137:1030–8. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000351.
[19] Li Y, Chen H, Yi W-J, Peng F, Li Z, Zhou Y. Effect of member depth and concrete strength on shear strength of RC deep beams without transverse reinforcement. Eng Struct 2021;241:112427. https://doi.org/10.1016/j.engstruct.2021.112427.
[20] Nassif MK, Erfan AM, Fadel OT, El-sayed TA. Flexural behavior of high strength concrete deep beams reinforced with GFRP bars. Case Stud Constr Mater 2021;15:e00613. https://doi.org/10.1016/j.cscm.2021.e00613.
[21] Yousef AM, Tahwia AM, Marami NA. Minimum shear reinforcement for ultra-high performance fiber reinforced concrete deep beams. Constr Build Mater 2018;184:177–85. https://doi.org/10.1016/j.conbuildmat.2018.06.022.
[22] Ibrahim M, Wakjira T, Ebead U. Shear strengthening of reinforced concrete deep beams using near-surface mounted hybrid carbon/glass fibre reinforced polymer strips. Eng Struct 2020;210:110412. https://doi.org/10.1016/j.engstruct.2020.110412.
[23] Peng F, Cai Y, Yi W, Xue W. Shear behavior of two-span continuous concrete deep beams reinforced with GFRP bars. Eng Struct 2023;290:116367. https://doi.org/10.1016/j.engstruct.2023.116367.
[24] Nawaz W, Elchalakani M, Yehia S, Xie T, Liu H, Yang B, et al. Shear strengthening performance of GFRP reinforced lightweight SCC beams: Experimental and analytical study. Eng Struct 2023;278:115545. https://doi.org/10.1016/j.engstruct.2022.115545.
[25] Shaaban IG, Zaher AH, Said M, Montaser W, Ramadan M, Abd Elhameed GN. Effect of partial replacement of coarse aggregate by polystyrene balls on the shear behaviour of deep beams with web openings. Case Stud Constr Mater 2020;12:e00328. https://doi.org/10.1016/j.cscm.2019.e00328.
[26] Garcia S, Pereira A, Pierott R. Shear strength of sand-lightweight concrete deep beams with steel fibers. ACI Struct J 2021;118:203–14.
[27] Dabbaghi F, Yang TY, Tanhadoust A, Emadi SB, Dehestani M, Yousefpour H. Experimental and numerical investigation on post-fire seismic performance of light weight aggregate reinforced concrete beams. Eng Struct 2022;268:114791. https://doi.org/10.1016/j.engstruct.2022.114791.
[28] Fan S, Zhang Y, Tan KH. Fire behaviour of deep beams under unsymmetrical loading. Eng Struct 2022;250:113419. https://doi.org/10.1016/j.engstruct.2021.113419.
[29] Alqarni AS, Albidah AS, Abadel AA. Shear performance of reinforced concrete deep beams using different coarse aggregates under the effect of elevated temperatures. Case Stud Constr Mater 2022;16:e01087. https://doi.org/10.1016/j.cscm.2022.e01087.
[30] Tan KH, Lu HY. Shear behavior of large reinforced concrete deep beams and code comparisons. Struct J 1999;96:836–46.
[31] Augustino DS, Kabubo C, Kanali C, Onchiri RO. The orientation effect of opening and internal strengthening on shear performance of deep concrete beam using recycled tyre steel fibres. Results Eng 2022;15:100561. https://doi.org/10.1016/j.rineng.2022.100561.
[32] Rajesh Kumar K, Yuvanesh Kumar R. Structural behaviour of deep beam using hybrid fiber reinforced concrete with M−sand. Mater Today Proc 2022;68:1481–5. https://doi.org/10.1016/j.matpr.2022.07.097.
[33] Lin Y, Yan J, Wang Z, Fan F, Zou C. Ultimate capacity and failure mechanism of SCS and S-UHPC composite deep beams: Test and modeling. Eng Struct 2021;245:112874. https://doi.org/10.1016/j.engstruct.2021.112874.
[34] Alshannag MJ, Alshenawy AO. Enhancing the flexural performance of lightweight reinforced concrete beams exposed to elevated temperatures. Ain Shams Eng J 2021;12:2575–83. https://doi.org/10.1016/j.asej.2020.12.020.
[35] Fan S, Zhang Y, Tan KH. Experimental and analytical studies of reinforced concrete short beams at elevated temperatures. Eng Struct 2020;212:110445. https://doi.org/10.1016/j.engstruct.2020.110445.
[36] Astm C. Standard test method for sieve analysis of fine and coarse aggregates. ASTM C136-06 2006.
[37] Aggregates AICC on C and C. Standard test method for compressive strength of cylindrical concrete specimens. ASTM international; 2014.
[38] ASTM A. C496/C496M-17, Standard test method for splitting tensile strength of cylindrical concrete specimens ASTM C-496. West Conshohocken ASTM Int 2011.
[39] Duthinh D. Structural Design for Fire: A Survey of Building Codes and Standards. Gaithersburg, MD: 2014. https://doi.org/10.6028/NIST.TN.1842.
[40] Omar Z, Sugiman S, Yussof MM, Ahmad H. The effects of woven fabric Kenaf FRP plates flexural strengthened on plain concrete beam under a four-point bending test. Case Stud Constr Mater 2022;17:e01503. https://doi.org/10.1016/j.cscm.2022.e01503.
[41] Aguilar G, Matamoros AB, Parra-Montesinos G, Ramírez JA, Wight JK. Experimental evaluation of design procedures for shear strength of deep reinfoced concrete beams, American Concrete Institute; 2002.
[42] Hussein G, Sayed SH, Nasr NE, Mostafa AM. Effect of loading and supporting area on shear strength and size effect of concrete deep beams. Ain Shams Eng J 2018;9:2823–31. https://doi.org/10.1016/j.asej.2017.11.002.
[43] Oh J-K, Shin S-W. Shear strength of reinforced high-strength concrete deep beams. Struct J 2001;98:164–73.
[44] Albu-Hassan NH, Al-Thairy H. Experimental and numerical investigation on the behavior of hybrid concrete beams reinforced with GFRP bars after exposure to elevated temperature. Structures 2020;28:537–51. https://doi.org/10.1016/j.istruc.2020.08.079.
[45] Akinpelu M, Adedeji AA. Structural Response of Reinforced Self-Compacting Concrete Deep Beam Using Finite Element Method. J Soft Comput Civ Eng 2018;2:36–61. https://doi.org/10.22115/scce.2018.50115.
[46] Rehman A, Masood A, Akhtar S, Ibrahim SM, Shariq M. Experimental and numerical investigation into flexural bond strength of RC beams exposed to elevated temperature. Constr Build Mater 2021;282:122630. https://doi.org/10.1016/j.conbuildmat.2021.122630.
[47] Akhaveissy AH, Desai CS. Application of the DSC model for nonlinear analysis of reinforced concrete frames. Finite Elem Anal Des 2012;50:98–107. https://doi.org/10.1016/j.finel.2011.09.001.
[48] Zargarian M, Rahai A. Theoretical and Experimental Studies of Two‐Span Reinforced Concrete Deep Beams and Comparisons with Strut‐and‐Tie Method. Adv Civ Eng 2021;2021. https://doi.org/10.1155/2021/8880067.
[49] Moradi M, Esfahani MR. Application of the strut-and-tie method for steel fiber reinforced concrete deep beams. Constr Build Mater 2017;131:423–37. https://doi.org/10.1016/j.conbuildmat.2016.11.042. | ||
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