| 钢筋混凝土结构腐蚀损伤裂纹扩展轨迹模拟与数值分析 |
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| 引用本文： | 李永和,葛修润. 钢筋混凝土结构腐蚀损伤裂纹扩展轨迹模拟与数值分析[J]. 土木工程学报, 2003, 36(2): 1-5 |
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| 作者姓名： | 李永和 葛修润 |
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| 作者单位： | 1. 上海大学
2. 中科院武汉岩土力学所 |
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| 摘 要： | 通过取样检测 ,系统分析了钢筋锈蚀形状变化特征、混凝土表面裂纹宽度变化特征 ;在取样检测分析的基础上 ,给出了钢筋锈蚀层椭圆外轮廓线数学模型和相应的任一点锈蚀层厚度的计算公式 ;然后依据三个基本假定 ,给出锈蚀层虚拟边界位移离散化力学模型和相应的虚拟边界位移解和虚拟边界应力解 ;最后在虚拟边界位移条件下 ,用数值流形元法模拟了二类锈胀随服役时间变化引起裂纹扩展轨迹的问题 ,其模拟结果与实验结果相吻合
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| 关 键 词： | 锈蚀层 模型 虚拟边界 位移条件 数值流形元法 裂纹扩展 |
| 文章编号： | 1000-131X(2003)02-0001-05 |
| 修稿时间： | 2001-11-19 |
NUMERICAL ANALYSIS FOR CORROSION INDUCED CRACK PROPAGATION OF REINFORCED CONCRETE STRUCTURE |
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| Li YongheGe Xiurun. NUMERICAL ANALYSIS FOR CORROSION INDUCED CRACK PROPAGATION OF REINFORCED CONCRETE STRUCTURE[J]. China Civil Engineering Journal, 2003, 36(2): 1-5 |
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| Authors: | Li YongheGe Xiurun |
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| Abstract: | Both a model for the contour of corrosion layer and a formula for the rust thickness are proposed in the paper It is found that the contour is varied in an ellipse shape based on the in?site measured data Three assumptions are made to get the solution of displacements and stresses varied with different boundary At last,two kinds of the corrosion induced crack propagation are solved by the numerical manifold method It is in the state of fictitious displacement boundary varied with time It is found that the result is agreed with the test one |
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| Keywords: | corrosion layer model fictitious boundary displacement condition numerical manifold method crack propagation |
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