Seismic retrofit of a structure using self-centring precast concrete frames with enlarged beam ends
- Authors
- Eldin, MN[Eldin, Mohamed Nour]; Naeem, A[Naeem, Asad]; Kim, J[Kim, Jinkoo]
- Issue Date
- Nov-2020
- Publisher
- ICE PUBLISHING
- Keywords
- precast concrete; structural analysis; structural design
- Citation
- MAGAZINE OF CONCRETE RESEARCH, v.72, no.22, pp.1155 - 1170
- Indexed
- SCIE
SCOPUS
- Journal Title
- MAGAZINE OF CONCRETE RESEARCH
- Volume
- 72
- Number
- 22
- Start Page
- 1155
- End Page
- 1170
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/2729
- DOI
- 10.1680/jmacr.19.00012
- ISSN
- 0024-9831
- Abstract
- This research proposes a procedure to retrofit existing structures using self-centring post-tensioned precast concrete (SC-PC) frames. The procedure utilises the initial stiffness of the un-retrofitted structure and predicts the required initial stiffness of the retrofitted one using the N2 method. A modified precast beam-end shape is proposed to double the re-centring moment capacity of the retrofit frame at the beam-column interface. Different retrofit cases for two-and three-dimensional structures utilising the proposed and conventional PC beams are investigated. The results of the proposed procedure are verified through non-linear time history analysis using two different sets of earthquake records compatible with the design-level response spectrum. The study results reveal that the SC-PC retrofit frames are quite effective in controlling the earthquake-induced storey drift of the retrofitted structures while eliminating the residual storey drift. The results also indicate the effectiveness of the proposed beam shape in mitigating the inter-storey drift demand of the analysis model structures.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - Engineering > Civil, Architectural Engineering and Landscape Architecture > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/2729)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.