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基于复合单元法基本原理,将冷却水管置于常规混凝土单元内部,建立了含冷却水管大体积混凝土结构温度场仿真分析的复合单元算法。该方法既可以离散模拟冷却水管,又避免了绘制冷却水管网格的困难。复合单元中节点温度的求解过程与传统的有限元法类似。当水管通水结束时,含水管复合单元可自动退化成常规有限单元,进行二期通水时,只需将水管所在处的常规单元变成复合单元,不需变动网格。通过与常规有限单元法计算结果的比较,表明了复合单元法的合理性,同时也突出体现了其前处理简便的优势。
Based on the basic principle of composite element method, the cooling water pipe is placed inside the conventional concrete unit, and the composite element algorithm of the temperature field of the mass concrete structure with cooling water pipe is established. The method not only simulates the cooling water pipe discretely, but also avoids the difficulty of drawing the cooling water pipe grid. The solution of node temperature in the composite element is similar to the traditional finite element method. When the water pipe ends, the water pipe composite unit can be automatically degenerated into a conventional finite element, the second phase of water, just the water pipe where the conventional unit into a composite unit, without changing the grid. By comparing with the results of the conventional finite element method, the rationality of the composite element method is demonstrated, and the advantage of simple pre-treatment is highlighted.