关键词: 大体积混凝土温度场, 水管冷却, 有限单元法, 迭代求解

Abstract: On the basis of present research work relevant to approximate solution to the problem with FEM and equilibrium principle of thermel exchange between a water pipe and concrete, a new fully strict calculation approach is proposed to solve the algorithm problem of temperature field of mass concrete with cooling pipes. This method is much clearer and simpler in mathematicaland physical concepts. With the help of the method and the proposed technique for searching the pipe boundary elements along pipe line, the method is also easily suited to practical problems with numerous snake-shaped internal cooling pipes. So, the solutions of the problems are improved in precise. Finally, for the need of more complicated calculation in solving tempersture fields of concrete masses with numerous pipes in practice, two algorithm procedures of employing parallel calculation technique and struetural technique in FEM are suggested and the calculation working-load may be more decreased