STUDY ON SOLUTION PRECISION FOR TEMPERATURE FIELD OF MASS CONCRETE BY DIFFERENCE METHOD

摘要

When difference method is used to analyze temperature field of mass concrete, the problems that the solution precision is decreased greatly by larger difference step size, and computation will multiple as the difference step size gets smaller are inevitable. Based on the basic characteristics of difference method, in this paper, a kind of compensating method is put forward, by which solution precision can be controlled, however computation is not increased. And research on the compensating rules of three types of common formulas for adiabatic temperature rise of concrete is performed.