摘要
在合理的确定了火灾情况下钢管混凝土表面温度的基础上，利用有限元法计算方截面钢管混凝土在高温作用下的温度场，计算结果与试验结果吻合良好，并考虑了不同保护层厚度（混凝土和防火涂料）及不同钢管尺寸对方截面钢管混凝土温度场的影响，从而为进一步研究钢管混凝土的耐火极限和高温下的力学性能创造了条件。
On the basis of the reasonable definition of column's surface temperature in fire, FiniteElement method is applied to calculate the temperature field of concrete filled square steel tubes underhigh temperature, and the calculated results fit with those of test very satisfactorily. And the effect ofdifferent fire protect layers and different dimension of steel tubes on the temperature field of concretefilled square steel tubes under high temperature is considered. The work of this paper makes it possibleto study the fire resistance of concrete filled square steel tubular structures.
出处
《哈尔滨建筑大学学报》
1999年第5期34-38,共5页
Journal of Harbin University of Civil Engineering and Architecture
基金
国家自然科学基金
关键词
钢管混凝土构件
温度场
保护层
方形截面
有限元
concrete filled square steel tubes
temperature field
boundary condition
fire protection layer
