废弃玻璃骨料混凝土氯离子扩散的QR法  

QR method for the chloride ion diffusion of the waste glass aggregate concrete

作　　者：刘光焰[1] 范文[1] 王晓峰[1] 

机构地区：[1]桂林理工大学广西建筑新能源与节能重点实验室,广西桂林541004

出　　处：《混凝土》2014年第2期33-36,41,共5页Concrete

基　　金：广西教育厅科研项目(桂教科研[2009]25号;200911MS101)

摘　　要：在Fick第二定律的基础上,根据废弃玻璃骨料混凝土中的氯离子基本方程,提出了用于废弃玻璃骨料混凝土氯离子扩散问题的QR法,建立了基于常扩散系数的氯离子扩散的QR法模型。通过算例,可知QR法具有很好的计算效率和很高的计算精度,同时,与其他方法相比,可以更好地计算非规则边界的氯离子扩散问题,而且该法集有限元法、有限条法、无限元法和样条有限点法的优点于一体,克服了有限元及有限条法的缺点,不仅计算简单,而且精度高,大大降低了离散未知量,降低了计算工作量,保证了计算精度和效率。On base of the Fick＆#39;s second law,the QR method for the question of the chloride ion diffusion of the waste glass aggregate concrete was researched according to the basic equation of the chloride ions and QR method.Through example ,research showed that QR method has good computational efficiency and high accuracy,while compared with other methods,it can better calculate non-regular boundary of the chloride ion diffusion problem.Moreover,the QR method gather many advantages of finite element method,finite strip method,infinite element method and the spline finite point and overcome shortcomings of the finite element and finite strip method.It is not only simple but also highly accurate,and it greatly reduces the discrete unknown variables and computational workload,and ensure the accuracy and efficiency.

关 键 词：废弃玻璃 玻璃骨料 氯离子 样条有限点法 QR法 

分 类 号：TU528.01[建筑科学—建筑技术科学]