Earthquakes and Structures

  • 제10권2호
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  • Pages.313-328
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  • 2016
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
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Retrofitting of exterior RC beam-column joints using ferrocement jackets

  • 투고 : 2014.02.17
  • 심사 : 2015.01.28
  • 발행 : 2016.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

Beam-column joints are recognized as one of the most critical and vulnerable zones of a Reinforced Concrete (RC) moment resisting structure subjected to seismic loads. The performance of the deficient beam-column joints can be improved by retrofitting these joints by jacketing them with varied materials like concrete, steel, FRP and ferrocement. In the present study strength behavior of RCC exterior beam-column joints, initially loaded to a prefixed percentage of the ultimate load, and retrofitted using ferrocement jacketing using two different wrapping schemes has been studied and presented. In retrofitting scheme, RS-I, wire mesh is provided in L shape at top and at bottom of the beam-column joint, whereas, in scheme RS-II along with wire mesh in L shape at top and bottom wire mesh is also provided diagonally to the joint. The results of these retrofitted beam-column joints have been compared with those of the controlled joint specimens. The results show an improvement in the ultimate load carrying capacity and yield load of the retrofitted specimens. However, no improvement in the ductility and energy absorption has been observed.

키워드

참고문헌

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피인용 문헌

  1. Investigation of shear strength models for exterior RC beam-column joint vol.58, pp.3, 2016, https://doi.org/10.12989/sem.2016.58.3.475
  2. Nonlinear seismic analysis of a super 13-element reinforced concrete beam-column joint model vol.11, pp.5, 2016, https://doi.org/10.12989/eas.2016.11.5.905
  3. Seismic Performance of Exterior RC Beam–Column Joints Retrofitted using Various Retrofit Solutions vol.11, pp.3, 2017, https://doi.org/10.1007/s40069-017-0203-x
  4. Non-invasive steel haunch upgradation strategy for seismically deficient reinforced concrete exterior beam-column sub-assemblages vol.28, pp.6, 2016, https://doi.org/10.12989/scs.2018.28.6.719
  5. Rehabilitation of exterior RC beam-column connections using epoxy resin injection and galvanized steel wire mesh vol.16, pp.3, 2016, https://doi.org/10.12989/eas.2019.16.3.253