BEM ANALYSIS OF MIXED-MODE CRACK PROPAGATION DUE TO CORROSION OF REINFORCEMENT IN CONCRETE
BEM ANALYSIS OF MIXED-MODE CRACK PROPAGATION DUE TO CORROSION OF REINFORCEMENT IN CONCRETE
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混凝土中钢筋腐蚀引起的混合模式裂纹扩展的边界元分析
DOI：
10.2208/jscej.2002.704_271
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
M. Ohtsu
中科院分区：
文献类型：
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作者：
A. F. Uddin;M. Ohtsu
由于腐蚀产物的膨胀，裂缝在混凝土中的钢筋周围成核。这些裂纹的萌生和扩展的实验研究，然后分析的边界元法（BEM）。采用最大周向应力准则跟踪复合型裂纹的扩展。通过采用两域边界元法，裂纹方向的模式I和模式II的应力强度因子进行评估。在边界元分析中，研究了不同类型的裂纹模式，这是观察到的腐蚀开裂的模式I的应力强度因子的比率，模式II（KI/KII）。
Due to expansion of corrosive products, cracks are nucleated around reinforcement in concrete. Initiation and propagation of these cracks are studied by experimentally and then analytically by the Boundary Element Method (BEM). The maximum circumferential stress criterion is applied to trace the crack extension of mixed-mode cracking. By employing the two-domain BEM, crack orientations are evaluated from the stress intensity factors of mode I and mode II. In BEM analysis, the ratios of stress intensity factors of mode I to mode II (KI/KII) are studied for the different types of crack patterns, which are observed as corrosion cracking.