기존 중·저층 R/C 건물의 CFT 외부접합형 합성보강공법의 내진성능평가Seismic Performance Evaluation of External CFT Composite Methodology for Seismic Rehabilitation of Existing Medium- and Low-rise R/C Buildings
- Other Titles
- Seismic Performance Evaluation of External CFT Composite Methodology for Seismic Rehabilitation of Existing Medium- and Low-rise R/C Buildings
- Authors
- 김진영; 이강석
- Issue Date
- Apr-2023
- Publisher
- 대한건축학회지회연합회
- Keywords
- 내진성능평가; 철근콘크리트; CFT; 합성보강법; 내력증진형; 유사동적실험; Seismic performance evaluation; Reinforced concrete; CFT; Composite rehabilitation; Strength increasing method; Pseudo-dynamic testing
- Citation
- 대한건축학회연합논문집, v.25, no.2, pp 153 - 162
- Pages
- 10
- Indexed
- KCI
- Journal Title
- 대한건축학회연합논문집
- Volume
- 25
- Number
- 2
- Start Page
- 153
- End Page
- 162
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/113151
- ISSN
- 1229-5752
- Abstract
- In this study, in order to enhance the connection performance between the existing reinforced concrete (R/C) frame and the strengthening member, we proposed a novel concept of CFT External Composite Methodology (CECM) for seismic retrofit of existing domestic medium-to-low-rise R/C buildings. The CECM method, proposed in this study, can conduct the seismic retrofitting construction while residents can live inside building. The CECM rehabilitation system is a type of strength-enhancing reinforcement systems, to easily increase the ultimate horizontal shear capacity of R/C structures without seismic details in Korea, which show shear collapse mechanism. Two test specimens of full-size two-story R/C frame were fabricated based on an existing domestic R/C building without seismic details, and then retrofitted by using the proposed CECM seismic system; therefore, one control test specimen and one test specimen reinforced with the CECM system were used. Pseudo-dynamic testing was conducted to evaluate seismic strengthening effects, and the seismic response characteristics of the proposed system, in terms of the maximum shear force, response story drift, and seismic damage degree compared with the control specimen (R/C bare frame). Experiment results indicated that the proposed ECCM reinforcement system, externally installed to the existing R/C frame, effectively enhanced the horizontal shear force, resulting in reduced story drift of R/C buildings under the maximum design earthquake level designated in KDS 41.
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