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Novel non-invasive seismic upgradation strategies for gravity load designed exterior beam-column joints

Wybrane pełne teksty z tego czasopisma
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Existing gravity load designed (GLD) structures are vulnerable to seismic event due to their inherent weaknesses. The present study, focuses on the development of non-invasive and feasible strategies for seismic upgradation of these non-seismically designed structures. Three novel schemes, namely (i) single haunch upgradation scheme (U1), (ii) straight bar upgradation scheme (U2) and (iii) simple angle upgradation scheme (U3) are proposed for seismic upgradation of GLD specimens. The efficacy and effectiveness of these upgradation schemes are evaluated by conducting the reverse cyclic load tests on control and upgraded GLD exterior beam-column sub-assemblages. The performance of the upgraded specimens is compared with that of the control GLD beam-column sub-assemblage, in terms of load–displacement hystereses, energy dissipation capacities and global strength degradation behaviour. Tremendous improvement in the energy dissipation capacity to the tune of 2.63, 2.83 and 1.54 times the energy dissipated by the control GLD specimen is observed in single haunch upgraded specimens, straight bar upgraded specimen and simple angle upgraded specimen respectively. The specimen with single haunch upgradation performed much better compared to the GLD specimens upgraded with the other two schemes, by preventing the brittle anchorage failure, delaying the joint shear damage and redirecting the damage partially towards the beam.
Rocznik
Strony
479--489
Opis fizyczny
Bibliogr. 23 poz., rys., wykr.
Twórcy
  • CSIR-Structural Engineering Research Centre, Chennai 600113, Tamil Nadu, India, kanchana@serc.res.in
  • Academy of Scientific and Innovative Research (AcSIR), Taramani, Chennai 600113, Tamil Nadu, India
autor
  • CSIR-Structural Engineering Research Centre, Chennai 600113, Tamil Nadu, India, rams@serc.res.in
  • Academy of Scientific and Innovative Research (AcSIR), Taramani, Chennai 600113, Tamil Nadu, India
autor
autor
  • CSIR-Structural Engineering Research Centre, Chennai 600113, Tamil Nadu, India, saptarshi@serc.res.in
  • Academy of Scientific and Innovative Research (AcSIR), Taramani, Chennai 600113, Tamil Nadu, India
Bibliografia
  • [1] S.M. Alcocer, J.O. Jirsa, Strength of reinforced concrete frame connections rehabilitated by jacketing, ACI Struct. J. 90 (3) (1993) 249–261.
  • [2] A.G. Tsonos, Lateral load response of strengthened reinforced concrete beam-to-column joints, ACI Struct. J. 96 (1) (1999) 46–56.
  • [3] A. Ghobarah, T.S. Aziz, A. Biddah, Rehabilitation of reinforced concrete frame connections using corrugated steel jacketing, ACI Struct. J. 94 (3) (1997) 282–294.
  • [4] G. Santarsiero, A. Masi, Seismic performance of RC beam– column joints retrofitted with steel dissipation jackets, Eng. Struct. 85 (2015) 95–106.
  • [5] E. Dogan, N.K. Opara, Seismic retrofit with continuous slurry-infiltrated mat concrete jackets, ACI Struct. J. 100 (6) (2003) 713–722.
  • [6] M.J. Shannag, S. Barakat, M. Abdul Kareem, Cyclic behaviour of HPFRC-repaired reinforced concrete interior beam-column joints, Mater. Struct. 35 (2002) 348–356.
  • [7] M.J. Shannag, M.A. Alhassan, Seismic upgrade of interior beam-column sub assemblages with high-performance fiber-reinforced concrete jackets, ACI Struct. J. 102 (1) (2005) 131–138.
  • [8] G.I. Kalogeropoulos, A.D.G. Tsonos, D. Konstandinidis, S. Tsetines, Pre-earthquake and post-earthquake retrofitting of poorly detailed exterior RC beam-to-column joints, Eng. Struct. 109 (2016) 1–15.
  • [9] M.N.S. Hadi, T.M. Tran, Retrofitting non-seismically detailed exterior beam-column joints using concrete covers together with CFRP jacket, Constr. Build. Mater. 63 (2014) 161–173.
  • [10] T. El-Amoury, A. Ghobarah, Seismic rehabilitation of beam– column joint using GFRP sheets, Eng. Struct. 24 (11) (2002) 1397–1407.
  • [11] A. Prota, A. Nanni, G. Manfredi, E. Cosenza, Selective upgrade of under designed reinforced concrete beam-column joints using carbon fiber-reinforced polymers, ACI Struct. J. 101 (5) (2004) 699–707.
  • [12] U. Akguzel, S. Pampanin, Recent developments in seismic strengthening of RC beam-column joints with FRP materials, in: Proceedings of the 15th World Conference on Earthquake Engineering, 2012.
  • [13] H. Sezen, Repair and Strengthening of Reinforced Concrete Beam-Column Joints with Fiber-Reinforced Polymer Composites, J. Compos. Constr. 16 (5) (2012) 499–506.
  • [14] R. Realfonzo, A. Napoli, J.G.R. Pinilla, Cyclic behavior of RC beam-column joints strengthened with FRP systems, Constr. Build. Mater. 54 (2014) 282–297.
  • [15] C.D. Vecchio, M.D. Ludovico, A. Prota, G. Manfredi, Analytical model and design approach for FRP strengthening of non- conforming RC corner beam–column joints, Eng. Struct. 87 (2015) 8–20.
  • [16] Q.S. Yu, S. Noel, C.M. Uang, Experimental Studies on Seismic Rehabilitation of Pre-Northridge Steel Moment Connections: RBS and Haunch Approach, Report No. SSRP-97/09, University of California at San Diego, 1997.
  • [17] S. Pampanin, C. Christopoulos, Non-invasive retrofit of existing RC frames designed for gravity loads only, in: Proceedings of Concrete Structures in Seismic Regions, 2003.
  • [18] S. Pampanin, C. Christopoulos, T.H. Chen, Development and validation of a metallic haunch seismic retrofit solution for existing under-designed RC frame buildings, Earthq. Eng. Struct. Dyn. 35 (2006) 1739–1766.
  • [19] G. Genesio, A. Sharma, R. Eligehausen, S. Pampanin, G.R. Reddy, Development of seismic retrofit technique of RC frame using fully fastened haunch elements: static to dynamic testing, in: Proceedings of 14th Symposium on Earthquake Engineering Indian Institute of Technology, 2010.
  • [20] A. Sharma, G.R. Reddy, R. Eligehausen, G. Genesio, S. Pampanin, Seismic response of reinforced concrete frames with haunch retrofit solution, ACI Struct. J. 111 (3) (2014) 673–684.
  • [21] M.K. Sharbatdar, A. Kheyroddin, E. Emami, Cyclic performance of retrofitted reinforced concrete beam–column joints using steel prop, Constr. Build. Mater. 36 (2012) 287–294.
  • [22] J. Shafaei, A. Hosseini, M.S. Marefat, Seismic retrofit of external RC beam–column joints by joint enlargement using prestressed steel angles, Eng. Struct. 81 (2014) 265–288.
  • [23] G. Campione, L. Cavaleri, M. Papia, Flexural response of external R.C. beam–column joints externally strengthened with steel cages, Eng. Struct. 104 (2015) 51–64.
Uwagi
PL
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018)
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-e9542bec-e940-43d7-879d-6a524d526dfd
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