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http://dx.doi.org/10.4334/JKCI.2003.15.6.866

Fire Damaged Behavior of Real Sized Normal Strength RC Columns  

Lee, Cha-Don (Dept. of Architectural Engineering, Chung-Ang University)
Shin, Yeong-Soo (Dept. of Arichitecture, Ewha womans University)
Hong, Sung-Gul (Dept. of Architecture, Seoul National University)
Lee, Kyung-Ku (Fire Insurance Laboratories)
Lee, Seung-Whan (Dept. of Architectural Engineering, Chung-Ang University)
Publication Information
Journal of the Korea Concrete Institute / v.15, no.6, 2003 , pp. 866-876 More about this Journal
Abstract
Experiments were performed for the real sized 12 reinforced concrete columns of 350${\times}$350${\times}$3350 mm with normal concrete in order to observe the fire-damaged behavior of these columns. Columns were heated according to the ISO heating curve. Main experimental parameters were: magnitude of axial load, heating time, cover thickness, and eccentricity. Effects of these parameters on the axial expansion and contraction, rotation, buckling, ISO fire resistance, and structural stability were experimentally quantified. It has been observed that the contraction rate of axial deformation was affected mostly by the duration of heating time and buckling of reinforcement or member by the magnitude of axial load, duration of heating time, cover thickness and eccentricity in order. Based on the experimental observations, ISO fire resistance criteria were qualiatively criticized.
Keywords
experiments; reinforced concretes columns; heating time; ISO fire resistance;
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