2024年4月3日花蓮發生芮氏規模7.2地震，震後調查某案例圖書館震損，發現館內承載架(含圖書架、CD架)傾覆、藏書與視聽影集掉落嚴重，且多組承載架變形與破壞。本文詳述案例圖書館之書架與CD架構造形式與種類，並以推估之圖書館各樓層受震反應，針對不同樓層之未錨定承載架進行傾覆性評估，比對實際承載架傾覆的勘查結果，據以探討剛體傾覆評估方法對於圖書館承載架傾覆性評估的適用性。為有效提升圖書館既有圖書架之耐震性能，本文亦參酌相關文獻，提供既有承載架之評估補強與耐震性能改善初步建議。

A magnitude 7.2 earthquake was occurred on April 3 in 2024. Books fallen and bookshelves overturned were happened in the library. The various damage rendered the library unusable for an extended period, requiring significant manpower and financial resources for repair and recovery. This paper details the structural forms and types of load-bearing racks (including bookshelves and CD racks) in the case library, and conducts an overturning analysis of the freestanding load-bearing racks on different floors. It also uses the estimated seismic response of each floor of the library to evaluate overturning behavior of racks in different floor, which are compared to the actual overturning damages to explore the applicability of the rigid body overturning assessment method. In order to effectively improve the seismic performance of the existing bookshelf in the library, this paper also refers to relevant literature to provide preliminary suggestions for seismic improvement strategies.