Retrofitting Seismically Designed Exterior Beam-Column Joints under Lateral Monotonic Loading: A Numerical Analysis Based on Experimental Testing

Document Type : Regular Paper

Authors

1 Ph.D. Candidate, Department of Civil Engineering, Faculty Engineering, Razi University, Kermanshah, Iran

2 Associate Professor, Department of Civil Engineering, Faculty Engineering, Razi University, Kermanshah, Iran

3 Assistant Professor, Department of Civil Engineering, Faculty Engineering, Kerbala University, Kerbala, Iraq

Abstract

This research paper presents an experimental and numerical study on the behavior of reinforced concrete (RC) in exterior beam-column joints designed for seismic conditions. Three laboratory specimens were prepared and tested to evaluate their load-bearing capacity and study the joint behavior under a constant axial load and a gradually increasing peak monotonic load until failure. The experimental results demonstrated convergence among the specimens in terms of the load-displacement curve, displacement ductility, and energy dissipation. This was further confirmed through the use of a Finite Element (FE) analysis model. The numerical analysis exhibited significant convergence between experimental and numerical results. Additionally, the numerical model was retrofitted using Carbon Fiber Reinforced Polymer (CFRP) in two methods: model 1 (CFRP sheets only) and model 2 (CFRP sheets with strips). The retrofitting with CFRP proved suitable for enhancing structure performance, showing an improvement in failure mode and a significant increase in peak monotonic load and energy dissipation by (31 and 26) % for model 1, and by (47 and 36) % for model 2. This provides valuable insights into the behavior of RC exterior beam-column joints, highlighting the importance of retrofitting with CFRP composites.

Graphical Abstract

Retrofitting Seismically Designed Exterior Beam-Column Joints under Lateral Monotonic Loading: A Numerical Analysis Based on Experimental Testing

Highlights

  • Three exterior beam-column joint are studied in laboratory.
  • FE models have been developed for exterior beam-column joints, as well as their strengthening with carbon fibers reinforced polymer (CFRP).
  • CFRP retrofitting increases the ultimate, yield load capacity and energy dissipation.
  • The use of CFRP jacketing for retrofitting helps to regain full strength.
  • Effect on the strength of beam-column joints retrofitted with CFRP jackets.

Keywords

Main Subjects

References

[1]     Chu L, Tian Y, Li D, He Y, Feng H. Shear behavior of steel reinforced concrete column-steel beam joints with or without reinforced concrete slab. J Build Eng 2021;35:102063. https://doi.org/10.1016/j.jobe.2020.102063.
[2]     Abdelwahed BS, Kaloop MR, El-Demerdash WE. Nonlinear numerical assessment of exterior Beam-Column connections with Low-Strength concrete. Buildings 2021;11:562. https://doi.org/10.3390/buildings11110562.
[3]     Mosallam A, Allam K, Salama M. Analytical and numerical modeling of RC beam-column joints retrofitted with FRP laminates and hybrid composite connectors. Compos Struct 2019;214:486–503. https://doi.org/10.1016/j.compstruct.2019.02.032.
[4]     Tavasoli E, Rezaifar O, Kheyroddin A. Seismic performance of RC joints retrofitted by external diagonal bolts. J Build Eng 2022;46: 103691. https://doi.org/10.1016/j.jobe.2021.103691.
[5]     Qasem M, Hasan M, Muhamad R, Mutafi A. Non-linear 3D finite element analysis of precast reinforced concrete Beam-Column joint under monotonic static load. Mater Today Proc 2022;65:746–57. https://doi.org/10.1016/j.matpr.2022.03.284.
[6]     Qasem M, Hasan M, Muhamad R. Finite element simulation of precast moment resisting reinforced concrete beam-column joint subjected to monotonic load. Mater Today Proc 2023. https://doi.org/10.1016/j.matpr.2023.03.532.
[7]     Xiao J, Ding T, Zhang Q. Structural behavior of a new moment-resisting DfD concrete connection. Eng Struct 2017;132:1–13. https://doi.org/10.1016/j.engstruct.2016.11.019.
[8]     Vecchi F, Belletti B. Capacity assessment of existing RC columns. Buildings 2021;11:161. https://doi.org/10.3390/buildings11040161.
[9]     Ding T, Xiao J. Behavior of concrete beam-column frame joints with DfD connections: A simulation study with interface modelling. Eng Struct 2019;189:347–58. https://doi.org/10.1016/j.engstruct.2019.03.082.
[10]   Majumder S, Saha S. Quasi-static cyclic performance of RC exterior beam-column joint assemblages strengthened with geosynthetic materials. Structures 2021;29:1210–28. https://doi.org/10.1016/j.istruc.2020.12.010.
[11]    De Santis S, de Felice G, Roscini F. Retrofitting of masonry vaults by basalt textile-reinforced mortar overlays. Int J Archit Herit 2019;13:1061–77. https://doi.org/10.1080/15583058.2019.1597947.
[12]   Saad AG, Sakr MA, El-korany TM. The shear strength of existing non-seismic RC beam-column joints strengthened with CFRP Sheets: Numerical and analytical study. Eng Struct 2023;291: 116497. https://doi.org/10.1016/j.engstruct.2023.116497.
[13]   Barmi CG, Saghafi MH, Golafshar A. Providing a strategy to restore damaged RC beam-column joints with the combination of CFRP and HPFRCC. Eng Struct 2024;299:117148. https://doi.org/10.1016/j.engstruct.2023.117148.
[14]   Tafsirojjaman T, Miri A, Noor-E-Khuda S, Ahmed A, Islam ABMS, Khan M. Structural performance of CFRP strengthened SHS beam-column connections subjected to monotonic loading: A numerical simulation. Structures 2024;61:106030. https://doi.org/10.1016/j.istruc.2024.106030.
[15]   Tomlinson D, Fam A. Performance of concrete beams reinforced with basalt FRP for flexure and shear. J Compos Constr 2015;19:4014036. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000491.
[16]   Chen P-Y, Feng R, Xu Y, Zhu J-H. Recycling and reutilization of waste carbon fiber reinforced plastics: current status and prospects. Polymers (Basel) 2023;15:3508. https://doi.org/10.3390/polym15173508.
[17]   Park S-J, Park S-J. Novel carbon fibers and their composites. Carbon Fibers 2018;210:295–342. https://doi.org/10.1007/978-981-13-0538-2_9.
[18]   Jahami A, Issa CA. An Updated Review on the Effect of CFRP on Flexural Performance of Reinforced Concrete Beams. Int J Concr Struct Mater 2024;18:14. https://doi.org/10.1186/s40069-023-00651-y.
[19]   Alshamrani S, Rasheed HA, Salahat FH, Borwankar A, Divilbiss N. Seismic flexural behavior of CFRP strengthened reinforced concrete beams secured with fiber anchors. Eng Struct 2024;305: 117728. https://doi.org/10.1016/j.engstruct.2024.117728.
[20]   Cao X, Wang W, Tan X, Zhang Y. Seismic behaviour of pre-damaged RC columns strengthened with CFRP grid/sprayed ECC jackets subjected to horizontal reversed cyclic loading and constant axial force. Case Stud Constr Mater 2024;20: e02948. https://doi.org/10.1016/j.cscm.2024.e02948.
[21]   Zhou J, Hu Z, Wang B, Li X, Han J. Experimental investigation of CFRP-confined partially encased composite columns under axial compression. J Build Eng 2024;81: 108094. https://doi.org/10.1016/j.jobe.2023.108094.
[22]   Farhang K, Farahbod F, Nezamabadi MF, Mansouri B. Shear strengthening of RC 3D exterior beam-column joints with CFRP sheets an experimental and numerical study. Asian J Civ Eng 2023;24:1599–619. https://doi.org/10.1007/s42107-023-00591-8.
[23]   Fan G, Yang J, Liu J, Yang S, Gao M. Research on Seismic Performance of Eccentric Beam–Column Joint Retrofitted with CFRP–Steel Plate. Int J Civ Eng 2024;22:597–617. https://doi.org/10.1007/s40999-023-00919-0.
[24]   El Ghadioui R, Hiesch D, Bujotzek L, Proske T, Graubner C-A. Structural behaviour of CFRP reinforced concrete members under monotonic and cyclic long-term loading. Mater Struct 2021;54:137. https://doi.org/10.1617/s11527-021-01728-4.
[25]   Mohammed AA, Manalo AC, Ferdous W, Zhuge Y, Vijay P V, Pettigrew J. Experimental and numerical evaluations on the behaviour of structures repaired using prefabricated FRP composites jacket. Eng Struct 2020;210:110358. https://doi.org/10.1016/j.engstruct.2020.110358.
[26]   Siddika A, Al Mamun MA, Ferdous W, Alyousef R. Performances, challenges and opportunities in strengthening reinforced concrete structures by using FRPs–A state-of-the-art review. Eng Fail Anal 2020;111:104480. https://doi.org/10.1016/j.engfailanal.2020.104480.
[27]   Mohammed AA, Manalo A, Ferdous W, Abousnina R, AlAjarmeh O, Vijay P V, et al. Design considerations for prefabricated composite jackets for structural repair: Parametric investigation and case study. Compos Struct 2021;261:113288. https://doi.org/10.1016/j.compstruct.2020.113288.
[28]   Akguzel U, Pampanin S. Assessment and design procedure for the seismic retrofit of reinforced concrete beam-column joints using FRP composite materials. J Compos Constr 2012;16:21–34. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000242.
[29]   Tafsirojjaman T, Fawzia S, Thambiratnam DP, Zhao X-L. FRP strengthened SHS beam-column connection under monotonic and large-deformation cyclic loading. Thin-Walled Struct 2021;161:107518. https://doi.org/10.1016/j.tws.2021.107518.
[30]   Ali SA, Forth JP. An experimental and analytical investigation of reinforced concrete beam-column joints strengthened with a range of CFRP schemes applied only to the beam. Adv Struct Eng 2021;24:2748–66. https://doi.org/10.1177/13694332211007371.
[31]   Alshaikh IMH, Nehdi ML, Abadel AA. Numerical investigations on progressive collapse of rubberized concrete frames strengthened by CFRP sheets. Structures 2024;60:105918. https://doi.org/10.1016/j.istruc.2024.105918.
[32]   Del Vecchio C, Di Ludovico M, Prota A, Manfredi G. Analytical model and design approach for FRP strengthening of non-conforming RC corner beam–column joints. Eng Struct 2015;87:8–20. https://doi.org/10.1016/j.engstruct.2015.01.013.
[33]   Dalalbashi A, Eslami A, Ronagh HR. Numerical investigation on the hysteretic behavior of RC joints retrofitted with different CFRP configurations. J Compos Constr 2013;17:371–82. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000361.
[34]   Morankar A, Pisolkar A V. STUDY OF STRUCTURAL BEHAVIOR OF RETROFIT BEAM COLUMN JUNCTION USING ANSYS. I-Manager’s J Struct Eng 2023;11:1.
[35]   Wang J, Yue X, Li F, Sun Y, Li Z. Post-Fire Seismic Property of Reinforced Concrete Frame Joints with Carbon Fiber-Reinforced Polymer Using Numerical Analysis. Fire 2023;6:205. https://doi.org/10.3390/fire6050205.
[36]   John F. Bonacci SMA. Recommendations for Design of Beam-Column Connections in Monolithic Reinforced Concrete Structures. Am Concr Institute, ACI 352R-02 2002: 1-37.
[37]   Farmington Hills, MI U. Building Code Requirements for Structural Concrete and Commentary. Am Concr Institute, ACI 318-19 2019:628.
[38]   ASTM A615/AM615-15. Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement. Am Soc Test Mater 2015.
[39]   Dixon, Donald E., Jack R. Prestrera, George RU Burg, Subcommittee A. Chairman, Edward A. Abdun-Nur, Stanley G. Barton LWB et al. Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete. Am Concr Inst (ACI 2111-91) (1991, Reapproved 2002) n.d.
[40]   ASTM C150/C150-07. Standard Specification for Portland Cement. Am Soc Test Mater 2007.
[41]   ASTM C33/C33M-16. Standard specification for concrete aggregate. Am Soc Test Mater 2016.
[42]   ASTM C494/C494-05. Standard specification for chemical admixtures for concrete. Am Soc Test Mater 2005.
[43]   ASTM C143/143-05. Standard Test Method for Slump of Hydraulic Cement Concrete. Am Soc Test Mater 2005.
[44]   Norman L. Scott NMH, Michael E. Kreger LDM. Commentary on Acceptance Criteria for Moment Frames Based on Structural Testing. Am Concr Institute, ACI T11-01 2001.
[45]   Azimi M, Adnan A Bin, Bin Mohd Sam AR, Tahir MM, Faridmehr I, Hodjati R. Seismic performance of RC beam‐column connections with continuous rectangular spiral transverse reinforcements for low ductility classes. Sci World J 2014;2014:802605. https://doi.org/10.1155/2014/802605.
[46]   Alhaddad MS, Siddiqui NA, Abadel AA, Alsayed SH, Al-Salloum YA. Numerical investigations on the seismic behavior of FRP and TRM upgraded RC exterior beam-column joints. J Compos Constr 2012;16:308–21. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000265.
[47]   Melo J, Varum H, Rossetto T. Experimental assessment of the monotonic and cyclic behaviour of exterior RC beam-column joints built with plain bars and non-seismically designed. Eng Struct 2022;270:114887. https://doi.org/10.1016/j.engstruct.2022.114887.
[48]   Wang Z, Huang J, Chang Z, Lu Y. Experimental and Numerical Investigation on Seismic Performance of RC Exterior Beam‐Column Joints with Slabs. Shock Vib 2022;2022:3679431. https://doi.org/10.1155/2022/3679431.
[49]   Melo J, Pohoryles DA, Rossetto T, Varum H. Full-scale cyclic testing of realistic reinforced-concrete beam-column joints. MethodsX 2021;8: 101409. https://doi.org/10.1016/j.mex.2021.101409.
[50]   Ugale AB, Khante SN. Study of energy dissipation of reinforced concrete beam-column joint confined using varying types of lateral reinforcements. Mater Today Proc 2020;27: 1356-1361. https://doi.org/10.1016/j.matpr.2020.02.690.
[51]   Sakthimurugan K, Baskar K. Experimental investigation on rcc external beam-column joints retrofitted with basalt textile fabric under static loading. Compos Struct 2021;268: 114001. https://doi.org/10.1016/j.compstruct.2021.114001.
[52]   Deng B-Y, Liu X, Yu K-Q, Li L-Z, Chen Y. Seismic retrofitting of RC joints using steel cage and haunch with bolted steel plate. Structures 2022;43: 285-298. https://doi.org/10.1016/j.istruc.2022.06.056.
[53]   Park R. Evaluation of ductility of structures and structural assemblages from laboratory testing. Bull New Zeal Soc Earthq Eng 1989;22:155–66. https://doi.org/10.5459/bnzsee.22.3.155-166.
[54]   Maria AA, Marianovella L, Marisa P. Bond Performances of FRP Rebars-Reinforced Concrete. J Mater Civ Eng 2007;19:205–13. https://doi.org/10.1061/(ASCE)0899-1561(2007)19:3(205).
[55]   Chalioris CE, Kytinou VK, Voutetaki ME, Karayannis CG. Flexural Damage Diagnosis in Reinforced Concrete Beams Using a Wireless Admittance Monitoring System—Tests and Finite Element Analysis. Sensors 2021;21:679. https://doi.org/10.3390/s21030679.
[56]   Moon N. Prediction of blast loading and its impact on buildings 2009.
[57]   Hognestad E, Hanson NW, McHenry D. Concrete stress distribution in ultimate strength design. J Proc 1955;52:455–80.
[58]   Rüsch H. Researches toward a general flexural theory for structural concrete. J Am Concr Inst 1960;57:1–28.
[59]   Kaar PH, Hanson NW, Capell HT. Stress-strain curves and stress block coefficients for high strength concrete. ACI Spec Publ 1978.
[60]   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.
[61]   Akhaveissy AH, Ali AM, Abbas B. A behavior study of lightweight reinforced concrete deep beams by considering different spacing of stirrups under the effect of fire: Experimental and numerical. J Rehabil Civ Eng 2024;12:137–58. https://doi.org/10.22075/jrce.2023.31484.1889.
[62]   Behnam H, Kuang JS, Huang RYC. Exterior RC wide beam-column connections: Effect of beam width ratio on seismic behaviour. Eng Struct 2017;147: 27-44. https://doi.org/10.1016/j.engstruct.2017.05.044.
[63]   Behnam H, Kuang JS, Samali B. Parametric finite element analysis of RC wide beam-column connections. Comput Struct 2018;205: 28-44. https://doi.org/10.1016/j.compstruc.2018.04.004.
[64]   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: 8880067. https://doi.org/10.1155/2021/8880067.
[65]   Soltanabadi R, Behfarnia K, Mamazizi A. Numerical investigation of RC deep beams containing recycled aggregates. Constr Build Mater 2022;324: 126713. https://doi.org/10.1016/j.conbuildmat.2022.126713.
[66]   Chen B, Zhou J, Zhang D, Su J, Nuti C, Sennah K. Experimental study on shear performances of ultra-high performance concrete deep beams. Structures 2022;39: 310-322. https://doi.org/10.1016/j.istruc.2022.03.019.
[67]   Demir A, Caglar N. Numerical determination of crack width for reinforced concrete deep beams. Comput Concr An Int J 2020;25:193–204.
[68]   Dabiri H, Kheyroddin A, Kaviani A. A Numerical Study on the Seismic Response of RC Wide Column–Beam Joints. Int J Civ Eng 2019;17:377–95. https://doi.org/10.1007/s40999-018-0364-2.
[69]   Najafgholipour MA, Arabi AR. Finite-element study on the behavior of exterior reinforced concrete beam-to-column connections with transverse reinforcement in the joint panel. Pract Period Struct Des Constr 2021;26:4020050. https://doi.org/10.1061/(ASCE)SC.1943-5576.00005.
[70]   Spozito RS, Rodrigues EFC, dos Santos HF, de Oliveira IA, Christoforo AL, de Almeida Filho FM, et al. Numerical Modeling of Four-Pile Caps Using the Concrete Damaged Plasticity Model. Buildings 2024;14:2066. https://doi.org/10.3390/buildings14072066.
[71]   Abed F, Oucif C, Awera Y, Mhanna HH, Alkhraisha H. FE modeling of concrete beams and columns reinforced with FRP composites. Def Technol 2021;17:1–14. https://doi.org/10.1016/j.dt.2020.02.015.
[72]   Akhaveissy AH, Permanoon A, Mirzaei M. Seismic Retrofit of Defective RC Beam-Column Joints. Period Polytech Civ Eng 2018;62:596–611. https://doi.org/10.3311/PPci.10661.
[73]   Nagaraja SG, Pletz M, Schuecker C. Constitutive modeling of anisotropic plasticity with application to fiber-reinforced composites. Int J Solids Struct 2019;180–181:84–96. https://doi.org/10.1016/j.ijsolstr.2019.07.002.
[74]   Tafsirojjaman T, Fawzia S, Thambiratnam DP. Structural behaviour of CFRP strengthened beam-column connections under monotonic and cyclic loading. Structures 2021;33:2689–99. https://doi.org/10.1016/j.istruc.2021.06.028.
[75]   Hejazi F, Karim H, Kazemi H, Shahbazpanahi S, Mosavi A. Fracture mechanics modeling of reinforced concrete joints strengthened by CFRP sheets. Case Stud Constr Mater 2022;17:e01273. https://doi.org/10.1016/j.cscm.2022.e01273.
[76]   Pohoryles DA, Melo J, Rossetto T, Varum H, Bisby L. Seismic retrofit schemes with FRP for deficient RC beam-column joints: State-of-the-art review. J Compos Constr 2019;23:3119001. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000950.
[77]   Ghobarah A, Saatcioglu M, Nistor I. The impact of the 26 December 2004 earthquake and tsunami on structures and infrastructure. Eng Struct 2006;28:312–26. https://doi.org/10.1016/j.engstruct.2005.09.028.
[78]   Zhao B, Taucer F, Rossetto T. Field investigation on the performance of building structures during the 12 May 2008 Wenchuan earthquake in China. Eng Struct 2009;31:1707–23. https://doi.org/10.1016/j.engstruct.2009.02.039.
[79]   Hadi MNS, Tran TM. Seismic rehabilitation of reinforced concrete beam–column joints by bonding with concrete covers and wrapping with FRP composites. Mater Struct 2016;49:467–85. https://doi.org/10.1617/s11527-014-0511-4.
[80]   Parvin A, Altay S, Yalcin C, Kaya O. CFRP rehabilitation of concrete frame joints with inadequate shear and anchorage details. J Compos Constr 2010;14:72–82. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000055.
[81]   Antonopoulos CP, Triantafillou TC. Experimental investigation of FRP-strengthened RC beam-column joints. J Compos Constr 2003;7:39–49. https://doi.org/10.1061/(ASCE)1090-0268(2003)7:1(3.
[82]   Vatani-Oskouei A. Repairing of seismically damaged RC exterior beam—column connection using CFRP. J Reinf Plast Compos 2010;29:3257–74. https://doi.org/10.1177/0731684410371407.
[83]   Sinaei H, Jumaat MZ, Shariati M. Numerical investigation on exterior reinforced concrete Beam-Column joint strengthened by composite fiber reinforced polymer (CFRP). Int J Phys Sci 2011;6:6572–9. https://doi.org/10.5897/IJPS11.1225.
[84]   Singh V, Bansal PP, Kumar M, Kaushik SK. Experimental studies on strength and ductility of CFRP jacketed reinforced concrete beam-column joints. Constr Build Mater 2014;55:194–201. https://doi.org/10.1016/j.conbuildmat.2014.01.047.
[85]   Wang G-L, Dai J-G, Bai Y-L. Seismic retrofit of exterior RC beam-column joints with bonded CFRP reinforcement: An experimental study. Compos Struct 2019;224: 111018. https://doi.org/10.1016/j.compstruct.2019.111018.

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  • Receive Date: 25 April 2024
  • Revise Date: 21 January 2025
  • Accept Date: 24 January 2025

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