鋼筋混凝土為現今房屋結構材料之主體，而火災為建築物損害的一大因素。本研究旨在探討鋼筋混凝土柱構件在高溫中及冷卻時的變形，同時利用ANSYS軟體分析試體內部溫度變化，進而使用相關資料預測鋼筋混凝土柱構件在高溫與冷卻中之變形狀況。
本研究共測試2座實尺寸之柱試體NC1及NC2，在0.45 軸壓及ISO 834標準升溫曲線加溫測試兩小時後冷卻，探討服務載重下，整體升溫及冷卻過程中試體內部溫度變化及軸向變形，然後進行殘餘強度試驗，探討其強度及變形狀況。
在高溫中混凝土保護層剝落對試體溫度分布影響甚劇，鋼筋混凝土柱在高溫中雖然本身承受0.45 之軸壓作用，但因熱變形讓柱體產生膨脹現象，NC1和NC2量測膨脹量分別為1.14 mm及0.41 mm，冷卻17小時後分別有11.08 mm及31.42 mm之壓縮量。

Reinforced concrete is the primary construction material of buildings nowadays, and fire is one of important factors causing damage to buildings. This thesis aims at studying the deformation of reinforced concrete column at elevated temperature and cooling condition. Meanwhile, the finite element software ANSYS is utilized to simulate temperature distribution and to predict deformation of column at elevated temperature and cooling condition.
In experimental study, two full-scale column specimens, NC1and NC2, were tested under axial compression of 0.45 and ISO 834 standard fire exposure for two hours. The temperature variation and deformation of specimens were studied. After the elevated temperature and cooling test, the residual strength test was carried out to investigate residual strength and deformation of column.
The spalling of cover concrete seriously affected the temperature distribution of specimens at elevated temperature stage. The column specimens sustained the axial compression during the elevated temperature test, but exhibited axial expansion. Specimens NC1 and NC2 had 1.14 mm and 0.41 mm axial expansion, respectively. After 17 hours cooling, specimen NC1 and NC2 shortened 11.08 and 31.42 mm, respectively.

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