摘要
在前期研究结果的基础上,编制了高强混凝土轴压柱和偏压柱准耐火极限的计算程序,考查了高温爆裂对准耐火极限的影响,研究了柱截面尺寸、轴压比、配筋率和偏心距等参数对高强混凝土柱准耐火极限的影响规律,结果表明:高温爆裂对高强混凝土柱准耐火极限的影响明显,截面尺寸、轴压比和偏心距的影响较大,而配筋率的影响较小。
On the basis of prior research result, the program of quasi fire endurance on axial and eccentric compressive column is developed, and the effect of explosive spalling under high temperature is consid- ered. The effect of different parameters on quasi fire endurance is studied, including cross - section dimension, axial pm-loading ratio, longitudinal steel ratio and eccentricity. The results show that the explosive spalling has an obvious effect on quasi fire endurance of high strength concrete column. Cross - section dimension, axial pre - loading ratio and eccentricity has obvious influence on the quasi fire endurance of high strength concrete column, and longitudinal steel ratio has less effect.
出处
《低温建筑技术》
2007年第4期1-4,共4页
Low Temperature Architecture Technology
基金
国家自然科学基金资助项目(59678034)
关键词
高强混凝土柱
火灾
爆裂
准耐火极限
high strength concrete column
fire
explosive spalling
quasi fire endurance
