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- Title
Evaluating Retrofitting Strategies of Low-to-Mid-Rise Reinforced Concrete Structure Based on Its Seismic Fragility.
- Authors
Rahma, Midia; Sangadji, Senot; Virawan, Zikra Fauzan; Saifullah, Halwan Alfisa; Devi, Rida Handiana
- Abstract
In earthquake-prone regions such as Indonesia, this situation has drawn public attention and led to difficulties in implementing certain policies and decision-making. One of the challenging issues in seismic risk reduction is evaluating the efficacy of seismic retrofitting the existing low-to-mid reinforced concrete building. Therefore, this research evaluates the retrofitting of low-tomid-rise reinforced concrete structures to evaluate the efficacy of the retrofitting strategy rationally using Fiber Reinforced Plastic (FRP), Buckling Restrained Braced Frame (BRBF), and shear wall strategies. Rusunawa at Cilacap, a mid-rise RC apartment for lowincome people, was selected as a benchmark building to compare existing and retrofitted seismic fragility. Furthermore, a 3D computer model was developed to predict the seismic response of the structure using a nonlinear static (pushover) analysis. The pushover method produces a capacity curve, showing that the unreinforced structure has a maximum base shear value of 15.2x103 kN. While the reinforcement of low to medium rise reinforced concrete structures using the Fiber Reinforced Plastic strategy has a maximum base shear value of 15.3x10³ kN, then reinforcement using the Buckling Restrained Braced Frame strategy with a maximum base shear value of 16.2x10³ kN. The shear wall reinforcement has a value maximum base shear of 19.7x10³ kN. The capacity curves as the analysis outputs were then converted into the fragility and used to rationalize the probabilistic value of the damage states between existing and retrofitted buildings.
- Subjects
INDONESIA; REINFORCED concrete; RETROFITTING; CONCRETE construction; SHEAR reinforcements; SHEAR walls; SEISMIC response
- Publication
International Journal on Advanced Science, Engineering & Information Technology, 2023, Vol 13, Issue 2, p494
- ISSN
2088-5334
- Publication type
Article
- DOI
10.18517/ijaseit.13.2.17480