Structural Monitoring and Maintenance

  • 제1권3호
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  • Pages.323-338
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  • 2014
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  • 2288-6605(pISSN)
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  • 2288-6613(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

An innovative solution for strengthening of old R/C structures and for improving the FRP strengthening method

  • Tsonos, Alexander G. (Department of Civil Engineering, Aristotle University of Thessaloniki)
  • 투고 : 2014.05.30
  • 심사 : 2014.08.30
  • 발행 : 2014.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

In this study a new innovative method of earthquake-resistant strengthening of reinforced concrete structures is presented for the first time. Strengthening according to this new method consists of the construction of steel fiber ultra-high-strength concrete jackets without conventional reinforcement which is usually applied in the construction of conventional reinforced concrete jackets. An innovative solution is proposed also for the first time that ensures a satisfactory seismic performance of existing reinforced concrete structures, strengthened by using composite materials. The weak point of the use of such materials in repairing and strengthening of old R/C structures is the area of beam-column joints. According to the proposed solution, the joints can be strengthened with a steel fiber ultra-high-strength concrete jacket, while strengthening of columns can be achieved by using CFRPs. The experimental results showed that the performance of the subassemblage strengthened with the proposed mixed solution was much better than that of the subassemblage retrofitted completely with CFRPs.

키워드

참고문헌

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피인용 문헌

  1. Pre-earthquake and post-earthquake retrofitting of poorly detailed exterior RC beam-to-column joints vol.109, 2016, https://doi.org/10.1016/j.engstruct.2015.11.009
  2. Equivalent bilinear elastic single degree of freedom system of multi-degree of freedom structure with negative stiffness vol.365, 2016, https://doi.org/10.1016/j.jsv.2015.11.005
  3. Analytical prediction of seismic behavior of RC joints and columns under varying axial load vol.174, pp.None, 2014, https://doi.org/10.1016/j.engstruct.2018.07.103
  4. Reinforced Concrete Beams with Carbon-Fiber-Reinforced Polymer Bars-Experimental Study vol.6, pp.4, 2014, https://doi.org/10.3390/fib6040099
  5. Experimental Assessment of RC Beam-Column Connections with Internal and External Strengthening Techniques vol.2019, pp.None, 2019, https://doi.org/10.1155/2019/2828353
  6. Rehabilitation and strengthening of exterior RC beam-column connections using epoxy resin injection and FRP sheet wrapping: Experimental study vol.72, pp.6, 2014, https://doi.org/10.12989/sem.2019.72.6.723
  7. Study on Seismic Performance of Improved High-Strength Concrete Pipe‐Pile Cap Connection vol.2020, pp.None, 2020, https://doi.org/10.1155/2020/4326208
  8. Behaviour of RC beam-column joint with varying location of construction joints in the column vol.20, pp.1, 2021, https://doi.org/10.12989/eas.2021.20.1.029
  9. SSI effects on the redistribution of seismic forces in one-storey R/C buildings vol.20, pp.3, 2021, https://doi.org/10.12989/eas.2021.20.3.261
  10. Effectiveness of the Novel Rehabilitation Method of Seismically Damaged RC Joints Using C-FRP Ropes and Comparison with Widely Applied Method Using C-FRP Sheets-Experimental Investigation vol.13, pp.11, 2021, https://doi.org/10.3390/su13116454
  11. Application of X-Shaped CFRP Ropes for Structural Upgrading of Reinforced Concrete Beam-Column Joints under Cyclic Loading-Experimental Study vol.9, pp.7, 2014, https://doi.org/10.3390/fib9070042
  12. Seismic Performance of RC Beam-Column Joints Designed According to Older and Modern Codes: An Attempt to Reduce Conventional Reinforcement Using Steel Fiber Reinforced Concrete vol.9, pp.7, 2014, https://doi.org/10.3390/fib9070045
  13. Behaviour of repaired RC beam-column joints using welded wire mesh and jacketed with polymer modified mortar vol.21, pp.1, 2014, https://doi.org/10.12989/eas.2021.21.1.079
  14. Analytical Model for the Design of HSFC and UHSFC Jackets with Various Steel Fiber Volume Fraction Ratios for the Retrofitting of RC Beam-Column Joints vol.13, pp.20, 2014, https://doi.org/10.3390/su132011209