%0 Journal Article
%T 混凝土桥梁中氯离子传输的元胞自动机模型<br>Cellular automata model for chloride ion transport in concrete bridges
%A 马俊军
%A 蔺鹏臻&lt
%A br&gt
%A MA Junjun
%A LIN Pengzhen
%J 铁道科学与工程学报
%D 2018
%X 为了避免Fick第二定律二阶偏微分方程的求解，准确地模拟混凝土桥梁中氯离子的侵蚀过程，基于元胞自动机原理建立混凝土中氯离子扩散的元胞自动机模型。以某T形截面梁为例，通过MATLAB软件编写计算程序，计算截面任意时刻和任意位置氯离子浓度，并与试验值进行比较。分析截面内氯离子浓度随材料水灰比的变化规律。研究结果表明，按本文方式建立的元胞自动机模型能够有效模拟混凝土中氯离子的扩散过程；利用本文建立的模型能够得到截面任意时刻和任意位置氯离子浓度，为结构耐久性设计提供参考依据；氯离子扩散速度随水灰比的增加而增大。<br>In order to avoid the solution of two order partial differential equation based on Fick second law and accurately simulate the erosion process of chloride ion in concrete bridge, the cellular automata model of chloride diffusion in concrete based on cellular automata theory was established. Taking a T section beam as an example, through the calculation program by MATLAB software, the chloride concentration at any time in any position was calculated, which can be compared with the experimental value. Then the variation law of chloride ion concentration in the cross section with the water cement ratio was analyzed. The results show that the cellular automata model established in this paper can effectively simulate the diffusion process of chloride ion in concrete. The model can obtain the concentration of chloride ion of any position of the cross section at any time and provides reference for structural durability design. The rate of chloride diffusion increases with increase of water cement ratio
%K 混凝土
%K 数值模拟
%K 元胞自动机
%K 氯离子
%K 扩散&lt
%K br&gt
%K concrete
%K numerical analysis
%K cellular automata
%K chloride ion
%K diffusion
%U http://www.jrse.cn/paper/paperView.aspx?id=paper_318855