摘要
本文以大型桥梁结构中大体积混凝土水化热问题为背景 ,就水化热数值模拟计算中时间步长对计算精度的影响进行了研究 ,提出了简便的修正方法 ,并对修正龄期进行了分析。研究结果表明 ,文中所提出的方法有效地减小了由于时间步长增大而造成的计算误差 ,大大降低了计算工作量 。
Taking the hydration heat problem of bulk concrete in large type bridges as the background, the paper studies on the influence of time step size on calculation precision in the simulation calculation of hydration heat numerical value, and puts forward simple revised method. It also analyzes the revised age. The study result shows that the method put forward in the paper effectively reduces the calculated error caused by the increment of time step size so as to greatly reduces the working volume of the calculation and achieves the ideal result.
出处
《城市道桥与防洪》
2003年第5期44-46,共3页
Urban Roads Bridges & Flood Control
