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工程力学  2013 

氯离子在混凝土中扩散传输的有限体积法模拟分析

DOI: 10.6052/j.issn.1000-4750.2012.03.0153, PP. 34-39

Keywords: 结构工程,混凝土耐久性,氯离子侵蚀,扩散传输,有限体积法,氯离子分布

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Abstract:

基于氯离子在混凝土结构中的扩散传输理论,建立了氯离子扩散传输偏微分方程,讨论了边界与初始条件。根据因变量在有限大小的控制体积中满足守恒定理,建立了氯离子在混凝土中扩散传输的离散方程,编制了计算程序。算例分析表明,有限体积法可以很好地模拟氯离子在混凝土中的扩散传输,可以分析计算复杂边界条件下的混凝土内的氯离子分布,并对受氯离子侵蚀混凝土结构的使用寿命进行预测分析。

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