考虑水分迁移混凝土构件温度场数值计算

Numerical Predictions of Temperature Field within Reinforced Concrete Member Exposed to Fire Considering Moisture Transfer

在火灾(高温)条件下,钢筋混凝土构件中水分的蒸发迁移会改变构件内部的传热过程,导致温升及局部温度分布发生变化。为评估钢筋混凝土构件的温度场分布和耐火稳定性,对现有模型进行了改进完善,建立了考虑水分蒸发迁移的二维钢筋混凝土构件温度场计算模型,并与试验值进行了对比分析,实测温度分布与计算结果一致性较好。

Due to the effect of water evaporation and moisture transfer, the temperature rise within reinforced concrete members exposed to fire will be affected, so as to alter the temperature distribution, This paper develops the two-dimensional models of water evaporation and moisture transfer, and establishes the temperature field calculation method. The calculation and experimental temperature distributions agree well especially in the high temperature zone.