混凝土非稳态温度场的计算

Research on the calculation of concrte's nonstationary temperature field

对混凝土受高温作用时温度场的计算进行了分析研究 ,给非稳态导热微分方程设计了合适的计算方法 ,此方法与通常采用的有限单元法结合差分法相比 ,具有计算简单、稳定性好、步长选择灵活和应用方便等特点 ,得到的结果与实验数据吻合良好 .实验数据具有不同的混凝土截面。

Reports Investigation on the computing of concrete's temperature field subjected to elevated temperature. An appropriate calculating method is considered for the nonstationary thermal conduction equation. This method has many advantages (such as simpler calculated process, better stability, moer flexible selection of time step, more convenient for calculation, etc.) over the finite element mothod and finite different method. The calculating results coincided quite well with the experimental data, although the sections of concrete beams, the maximum design temperature of fired beams and the point coordinates, were different in the above experimental data.