中南大学学报（自然科学版）2018，Vol.49Issue(2)：393-400,8.DOI:10.11817/j.issn.1672-7207.2018.02.018
考虑线性分布应力影响的混凝土氯离子侵蚀模型
A concrete chloride ion erosion model considering influence of linear distributed stress
摘要
Abstract
Based on the assumptions of polynomial relation between chloride diffusion coefficient and stress along with the Fick's second law, and with the boundary conditions of odd extension and diffusion equation in the Fourier transform, a concrete chloride ion erosion model, which took the structure section linear distribution of force into consideration, was established, and the solving processes and the determination method of the related parameters were given. With the existing experimental data of concrete chloride ion erosion, a practical example was given to verify the results. The results show that the chloride ion erosion model can reflect the impacts of the linear section stress distribution of structure on chloride ion diffusion, and the calculated mass fraction of chloride ion coincides well with the existing results and is closer to the test results, especially in shallow area, which verifies that the model is reliable.关键词
线性应力/Fick第二定律/氯离子扩散系数/傅里叶变换Key words
linear distributed stress/Fick's second law/chloride diffusion coefficient/Fourier transformation分类
交通工程引用本文复制引用
刘建文,彭立敏,雷明锋..考虑线性分布应力影响的混凝土氯离子侵蚀模型[J].中南大学学报（自然科学版）,2018,49(2):393-400,8.基金项目
国家自然科学基金资助项目(51508575) （51508575）
湖南省创新平台与科技人才项目(2015RS4006) （2015RS4006）
中南大学中央高校基本科研业务费专项资金资助项目(2017zzts523, 2017zzts154) （2017zzts523, 2017zzts154）
湖南省研究生科研创新项目(CX2016B050) (Project(51508575) supported by the National Natural Science Foundation of China （CX2016B050）
Project(2015RS4006) supported by the Innovative Talents of Science and Technology Plan of Hunan Province （2015RS4006）
Projects(2017zzts523,2017zzts154) supported by the Fundamental Research Funds for the Central Universities of Central South University （2017zzts523,2017zzts154）
Project (CX2016B050) supported by Hunan Provincial Innovation Foundation for Postgraduate) （CX2016B050）
