PROPOSAL OF INDEX FOR EVALUATING EFFICIENCY OF SEISMIC RETROFITTING APPLIED TO EXISTING RC BUILDINGS CONSIDERING FUTURE EARTHQUAKES, CONSTRUCTION COSTS AND ENVIRONMENTAL LOAD
Journal article, 2025
A seismic reinforcement efficiency evaluation index is proposed to select the optimal seismic reinforcement plan considering seismic performance, construction costs, and environmental impact. Focusing on seismic reinforcement of existing RC buildings, construction costs and environmental impacts are normalized to those related to reconstruction. Three types of common strengthening techniques were studied: RC shear walls, steel braces, and CLT walls. The evaluation results showed that using RC shear walls was the most cost-efficient, while CLT walls had the smallest environmental impact, suggesting that the most efficient retrofitting plan depends on the weighting assigned to costs and environmental impact.
Cost
Environmental load
Seismic performance
Reinforcement
Repair
RC buildings
Author
Himari Yoshida
Tohoku University
Kota Miura
Obayashi Corporation
Yohei Suzuki
Taisei Corporation
Riho Akiya
Obayashi Corporation
Alex Shegay
University of Auckland
Jonathan Monical
Tohoku University
Yusuke Suzuki
Osaka Metropolitan University
Yutaka Goto
Tohoku University
Chalmers, Architecture and Civil Engineering, Building Technology
Masaki Maeda
Tohoku University
Matsutaro Seki
Building Research Institute
AIJ Journal of Technology and Design
1341-9463 (ISSN) 18818188 (eISSN)
Vol. 31 79 1319-1324Subject Categories (SSIF 2025)
Geophysics
Building Technologies
DOI
10.3130/aijt.31.1319