蒙特卡罗法求大体积混凝土不稳定温度场的完整解  

The complete solution of mass concrete in unstable temperature field using the Monte Carlo method

作　　者：陈铂[1] 罗麟[1] 

机构地区：[1]四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065

出　　处：《水利水电科技进展》2009年第1期31-34,共4页Advances in Science and Technology of Water Resources

摘　　要：利用蒙特卡罗法,通过在时空域中不规则网格随机游动来求解大体积混凝土不稳定温度场。应用这种方法可以在不分解总刚矩阵的情况下,独立地求解任意时间段中单个结点的温度值。给出了有水化热影响和多边值条件共同作用下大体积混凝土不稳定温度场的蒙特卡罗法,并引入松弛系数s调整到初、边值的游动概率来提高精度,通过计算实例显示该方法是正确可行的。With irregular grid random walk in the time-space domain, the Monte Carlo Method was used to obtain a mass concrete transient temperature field. With this method, the temperature value on any single node at any moment can be solved independently in the absence of decomposition of the total stiffness matrix. The Monte Carlo method of mass concrete in an unstable temperature field under the effect of caloric of hydration and multi-beundary conditions is put forware. The random walk probability with the relaxation coefficient adjusted to the initial value and boundary value is introduced in order to obtain high accuracy. The example shows that the method is accurate and feasible.

关 键 词：大体积混凝土结构 不稳定温度场 蒙特卡罗法 多边值条件 

分 类 号：TV315[水利工程—水工结构工程]