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Title
Japanese:Building capacity curve estimation for damage evaluation using Japanese Seismic Evaluation results 
English:Building capacity curve estimation for damage evaluation using Japanese Seismic Evaluation results 
Author
Japanese: 毛利 未来, 楠 浩一, 毎田 悠承, YEOW Trevor Zhiqing.  
English: Miki Mori, Koichi Kusunoki, Maida Yusuke, Trevor Zhiqing Yeow.  
Language English 
Journal/Book name
Japanese: 
English: 
Volume, Number, Page        
Published date July 1, 2024 
Publisher
Japanese: 
English: 
Conference name
Japanese:18th World Conference on Earthquake Engineering 
English:18th World Conference on Earthquake Engineering 
Conference site
Japanese:Milan 
English:Milan 
Official URL https://program.wcee2024.it/
 
Abstract Following an earthquake, rapid inspections to evaluate building damage are crucial to allow the affected region to initiate a quicker return to a functioning society. To achieve this, structural health monitoring is increasingly being used in practice. However, there are difficulties in installing sensors in all buildings due to various limitations. One potential approach to address this issue in Japan is to use results from Japanese Seismic Evaluation. Within this evaluation process, the story shear force and interstory drift capacity are estimated from the section dimensions and bar arrangement of the vertical members for each floor and direction. Buildings built prior to 1981, when the seismic codes were drastically changed, are more susceptible to damage and are required by law to undergo the evaluation process. Thus, if results from such methods could be used to estimate a capacity curve, which can then be paired with available ground acceleration data, a rapid assessment of potential building damage could be obtained. In this study, a method to derive a building’s capacity curve from the Japanese Seismic Evaluation results (i.e., strength versus drift relationship) is proposed assuming a linear force distribution across the floors. Moreover, the study investigates the comparison of the Seismic Evaluation and pushover analysis, using experimental results from a 6-story reinforced concrete building that displayed inelastic behavior and soft-story mechanism. The predicted capacity curve indicate that the proposed method generally aligns with the responses from the experiment, with smaller responses in the representative acceleration. The Capacity Spectrum Method was then performed using the capacity curve to obtain the damage state, and the proposed method had the same or larger damage states compared to the experimental results. These conclusions indicate that the outputs from the Japanese Seismic Evaluation could be valuable for estimating building responses in a conservative manner.

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