以數值分析評估單棟RC建築物震後損失

Post-earthquake Financial Loss Estimation of an Individual RC Building through Numerical Anlaysis

薛強(Qiang Xue) ； 蕭輔沛(Fu-Pei Hsiao) ； 邱天宏(Tian-Hung Chiu) ； 邱聰智(Tsung-Chih Chiou) ； 張權(Chyuan Jhang) ； 周德光(Te-Kuang Chow) ； 翁健煌(Jian-Huang Weng) ； 葉勇凱(Yeong-Kae Yeh) ； 陳正忠(Cheng-Chung Chen) ； 鍾立來(Lap-Loi Chung)

《結構工程》 29卷2期 (2014/06) Pp. 63-80

https://doi.org/10.6849/SE.201406_29(2).0004

摘要

本文建立以數值分析評估RC建築物震後損失之方法，經由耐震性能評估法與非線性分析求取結構構件於震後之行為，並判定其對應之破壞等級，再應用基於震後破壞程度之損失評估方法推估對應之損失比，即可了解修復費用以及是否可以修復補強還是需要拆除重建。最後以一老舊建築物以及一近期設計之建物為例，經由非線性靜力側推分析建立性能點譜位移與最大樓層損失比之關係曲線。藉由本文研提之方法有助於建築物生命週期維護管理之決策，亦為下一代耐震性能設計以控制震後損失後果與風險為標的提供方法。

關鍵字

耐震性能 ； 非線性分析 ； 損失評估 ； 修復費用

並列摘要

This paper establishes a numerical method to estimate post-earthquake financial loss of an individual RC building. Through nonlinear analysis and seismic performance evaluation, structural behavior subjected to an earthquake excitation can be estimated. Corresponding damage degrees can be determined accordingly. Financial loss in terms of the repair to replacement cost ratio of the most severely damaged storey is estimated based on the post-earthquake damage degree. As a result, the repair cost is obtained and it is clear whether the building needs rehabilitation or rebuilt after demolition. Finally, we take an old building and a lately designed building as examples to establish correlation curves between the spectral displacement and the repair to replacement cost ratio of the most severely damaged storey through nonlinear static pushover analyses. The method proposed in this paper helps decision-making of lifecycle maintenance and management of existing buildings. It also provides a method to control post-earthquake damage consequence and risk for the next-generation of performance-based seismic design.

並列關鍵字

seismic performance ； nonlinear analysis ； loss estimation ； repair cost