开裂混凝土中氯离子传输的数值模拟

Prediction of chloride ion transport in cracked concrete

通过施加劈裂荷载方式诱导裂缝,然后采用图像分析技术对裂缝进行表征。采用多项式拟合推导出裂缝宽度、深度和氯离子浓度三者之间的关系,借助有限元方法推导出预测开裂混凝土中氯离子浓度分布的二维数值模拟方法。通过与试验分析结果相比较,验证了该模拟方法的有效性。

Cracking was introduced by splitting loading, and cracking width was measured through image analysis technology.Relationship a- mong cracking width, depth and chloride ion concentration has been deduced through polynomial fitting, and a theoretic model which could pre- dict chloride ion concentration of cracked concrete, was put forward based on finite element methods （FEM）.The model was verified according to the comparison with numerical results and experimental results.