摘要
在合理地确定钢管混凝土截面温度场分布，及组成钢管混凝土的钢材及混凝土热－力本构关系模型［２］的基础上，提出一种计算钢管混凝土轴心受压柱耐火极限的数值分析模型，理论计算结果与试验结果吻合良好。最后，分析了钢管混凝土构件截面直径、含钢率、钢材屈服极限及混凝土强度等参数对轴压柱耐火极限的影响。
A kind of integral method is put forward in this paper,which can be applied for the calculation of fire resistance of concrete filled steel tubular column subjected to axially compressive loading, based on the determinations of temperature field of the column′s section and the heat-force constitutive relations of the steel and concrete,the theoretical results fit with those of tests satisfactorily.Finally,the influences of the parameters,such as diameter,steel ratio,yielding point of the steel and strength of the concrete etc on the fire resistance of the column are analysed
出处
《哈尔滨建筑大学学报》
EI
1998年第1期25-30,共6页
Journal of Harbin University of Civil Engineering and Architecture
基金
国家自然科学基金委员会青年基金项目
关键词
钢管混凝土
轴心受压柱
耐火极限
计算
concrete filled steel tubes
axially loaded column
fire resistance
