臺灣地震活動頻繁，醫療建築即使主結構維持安全，懸吊式空調設備與連接管線等非結構系統仍可能因過大位移、碰撞或支承失效而造成設備停用與功能中斷。本研究以2024年花蓮地震中醫院非結構系統之震損配置為基礎，建置大尺度振動台試體，探討懸吊式隔振空調箱及其相鄰進、出水管於不同補強配置與地震輸入強度下之動態反應與破壞行為。
試驗分為完整補強、部分補強及未補強三階段，並透過白噪音、實際地震紀錄、樓板反應歷時及符合AC156需求之人工地震波進行測試。分析方法包括頻率響應函數、半功率法、單自由度擬合及SAP2000數值模型。結果顯示，完整補強可提高系統頻率並大幅降低設備與管線位移，但部分方向之加速度反應亦可能增加；未補強系統則呈現低頻柔性反應，並於高強度輸入下產生大位移、碰撞及局部尖峰，最終造成懸吊螺桿剪切、空調箱掉落與天花板損壞。
單自由度系統模型透過歷時分段於低輸入強度下可合理描述主要位移波形與峰值，但隨碰撞與接觸行為增加，其擬合能力明顯下降。經FRF比對之數值模型可掌握系統主要頻率與整體反應趨勢，但對局部尖峰及高強度非線性行為之重現仍有限。懸吊式隔振設備之耐震設計應同時考量位移控制、加速度傳遞、設備與管線交互作用及震後功能之維持。

Taiwan is seismically active, and hospital nonstructural systems may fail even when the primary structure remains intact. Based on damage observed during the 2024 Hualien earthquake, this study conducted large-scale shaking-table tests on a suspended vibration-isolated air-handling unit and its connected water pipes under different retrofit conditions.
Tests included fully retrofitted, partially retrofitted, and unretrofitted configurations. White-noise and earthquake motions were applied at increasing intensities. Accelerometers and displacement transducers measured equipment and piping responses. Frequency response functions, single-degree-of-freedom time-history fitting, and an SAP2000 numerical model were used.
The results showed that full retrofit increased system frequencies and substantially reduced equipment and piping displacements, although acceleration demands increased in some directions. The unretrofitted system exhibited flexible, low-frequency behavior and developed large displacements, impacts, and localized acceleration spikes under strong excitation, ultimately resulting in suspension-rod failure, the air-handling unit falling, and ceiling damage.
The single-degree-of-freedom model performed well at low excitation levels but became less accurate when impact, contact, and support damage occurred. The calibrated numerical model captured the dominant frequencies and response trends, yet remained limited in reproducing localized peaks and nonlinear behavior. These findings emphasize the need to consider displacement control, acceleration transmission, support strength, equipment–piping interaction, surrounding clearance, and post-earthquake functionality in hospital seismic design.

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