Earthquakes and Structures

  • 제9권6호
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  • Pages.1337-1353
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  • 2015
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Sustainable retrofit design of RC frames evaluated for different seismic demand

  • 투고 : 2014.11.14
  • 심사 : 2015.10.20
  • 발행 : 2015.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

Seismic upgrading of existing structures is a technical and social issue aimed at risk reduction. Sustainable design is one of the most important challenges in any structural project. Nowadays, many retrofit strategies are feasible and several traditional and innovative options are available to engineers. Basically, the design strategy can lead to increase structural ductility, strength, or both of them, but also stiffness regulation and supplemental damping are possible strategies to reduce seismic vulnerability. Each design solution has different technical and economical performances. In this paper, four different design solutions are presented for the retrofit of an existing RC frame with poor concrete quality and inadequate reinforcement detailing. The considered solutions are based on FRP wrapping of the existing structural elements or alternatively on new RC shear walls introduction. This paper shows the comparison among the considered design strategies in order to select the suitable solution, which reaches the compromise between the obtained safety level and costs during the life-cycle of the building. Each solution is worked out by considering three different levels of seismic demand. The structural capacity of the considered retrofit solutions is assessed with nonlinear static analysis and the seismic performance is evaluated with the capacity spectrum method.

키워드

참고문헌

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피인용 문헌

  1. Inelastic deformation ratio for seismic demands assessment of structures vol.199, 2017, https://doi.org/10.1016/j.proeng.2017.09.168
  2. Simplified procedure for seismic demands assessment of structures vol.59, pp.3, 2016, https://doi.org/10.12989/sem.2016.59.3.455
  3. Retrofit Design Methodology for Substandard R.C. Buildings with Torsional Sensitivity 2017, https://doi.org/10.1080/13632469.2016.1277569
  4. Seismic structural demands and inelastic deformation ratios: a theoretical approach vol.12, pp.4, 2015, https://doi.org/10.12989/eas.2017.12.4.397
  5. Seismic structural demands and inelastic deformation ratios: Sensitivity analysis and simplified models vol.13, pp.1, 2015, https://doi.org/10.12989/eas.2017.13.1.059
  6. Advanced Techniques for Pilotis RC Frames Seismic Retrofit: Performance Comparison for a Strategic Building Case Study vol.10, pp.9, 2015, https://doi.org/10.3390/buildings10090149
  7. Crack assessment of RC beam-column joints subjected to cyclic lateral loading using acoustic emission (AE): the influence of shear links aspect vol.48, pp.10, 2021, https://doi.org/10.1139/cjce-2019-0578