磚造古蹟歷史建築耐震評估方法

The Seismic Assessment of Historic Masonry Buildings

臺灣位於環太平洋地震帶上，為了維護古蹟或歷史建築在管理維護及使用過程之安全，適切耐震評估係修復規劃設計過程不可或缺工作項目之一。對於磚造歷史建築，國內目前採用之耐震評估大多參考國外之研究，但皆有其適用性問題。為建立磚砌古蹟歷史建築耐震評估法，本文依據過去相關研究所獲得之基礎，由磚砌建築物在地震時之結構行為與震害模式，研擬建築物整體之耐震評估程序。為說明本研究耐震評估之流程，本文實際應用於國定古蹟原臺南地方法院第一法庭及美濃廣善堂之宣講堂耐震評估。基本上，依本文所建立之耐震評估程序，可有效評估各道受面內水平力牆體之安全指標，及檢討面外向牆體是否合乎安全，並進而評估建築物整體之耐震能力。

With Taiwan being in the Circum-Pacific Ocean Seismic Belt, proper assessment of the seismic resistance of structures is an indispensable part of the conservation design process to ensure safety during the preservation and use of historic buildings. For historic buildings constructed using masonry, the seismic assessment methods usually adopted in the engineering practice in Taiwan are formulated with reference to foreign studies, but they all have some limitations. This paper establishes a seismic resistance assessment method for masonry buildings based on previous studies of URM structures and the investigation of seismic damage to masonry buildings. To demonstrate the seismic assessment process used in this study, this paper applies it to assess the seismic resistance of the first courtroom of the old Tainan District Court, a National Historic Site in Tainan, and the Hsuan-Chiang Hall of Kuang- Shan Temple, an Historic Site in Kaohsiung. The results show that the assessment method established in this paper can effectively assess the safety of walls subjected to in-plane horizontal force, the safety of out-of-plane walls, and seismic resistance of the structure as a whole.