Bearing Capacity Analysis of Self-Compacting Concrete Filled Box Column After Fire

• Main Authors: Jin-Ruei Song, 宋晉叡
• Other Authors: 陳豪吉
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/12741950269280144178

碩士 === 國立中興大學 === 土木工程學系所 === 104 === Self-Compacting Concrete (SCC) has been widely applied in high building structure based on its effective liquidity. But it’s worth to make an in-depth academic study that in fire or high temperature, whether SCC keeps on security or accords with fire resistant design of reinforced concrete structure. This study is to investigate the effect of high temperature on CFBC’s compressive strength through testing bearing carriage. The experiment focuses on compressive strength and failure mode of Concrete Filled Box Column under environment with temperature cooling and compares the results with the reference of reduction formula. The result of residual bearing capacity test shows that the anti-compressive of column under the 400℃fire damaged is larger than estimated nominal compressive. It says that the column has not or a little been damaged by the fire. The same result also shows on the test with 600℃ which is about 96% of the result with 400℃. The anti-compressive of column under the 800℃fire damaged is substantial decline, and the residual bearing force is about 80% of the result with 400℃. Apparently, the CFBC has been affected by fire damaged in 800℃, and showed the brittle nature. All of the failure of the specimen is due to the localized buckling in steel