Behavior of Reinforced Concrete Beam-Column Sub-assemblage Subjected to Elevated Temperature--Behavior of Column

• Main Authors: Kuo-wei Huang, 黃國維
• Other Authors: I-Kuang Fang
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/17407726675688438404

碩士 === 國立成功大學 === 土木工程學系碩博士班 === 95 === Most fire resistance codes are based on the experiment results of small-scale specimens. The study on the behavior of reinforce concrete beam-column sub-assemblage subjected to elevated temperature is still very limited. This research aims at the behavior of the beam-column sub-assemblages in a 7-story residential building subjected to fire. In the analysis, ANSYS program is used to predict the temperature distribution of the column section.In the experimental work,4 full-scale beam-column sub-assemblage specimens were tested,two of them were tested under room temperature, while the others were tested under elevated temperature. The key variables are the temperature distribution of the column section and their deformation behavior. The primary results of this research are as follows: 1.During the heating stage , the axial deformation of NC and SCC column is not clear, however, SCC column had 1.7 times more deformation than NC one during the cooling stage. 2.Under the condition of room temperature, the upper column had positive curvature, while the lower column had negative curvature. Similar behavior was also observed in the post-fire test. Relative more pronounced linear behavior was found in NC column, which could be due to the less spalling occurred in NC column. 3.After subjecting to the fire, the load-deformation relationship of NC and SCC columns is almost linear. The stiffness of SCC column is about 0.9 times of that of NC column.