图像处理在混凝土力学性能研究中的应用  

Digital Image Processing Technique Approach to Research of Concrete Mechanical Properties

作　　者：邬翔[1] 李杰[1] 

机构地区：[1]同济大学建筑工程系,上海200092

出　　处：《建筑材料学报》2009年第1期12-16,共5页Journal of Building Materials

基　　金：国家自然科学基金委创新研究群体资助项目(50621062)

摘　　要：利用数字图像处理技术将混凝土截面的数字图像映射到有限元网格,直接生成具有真实内部特征的混凝土数值试件.在这一过程中,针对图像处理技术最为关键的灰度阈值确定问题,提出用骨料级配曲线确定阈值范围、减小图像处理经验性影响的方法,实现了程序处理过程的自动化.最后,用该方法生成数值试件进行混凝土单轴受拉数值仿真,通过与真实试验结果比较,证实了该方法的有效性.With image processing technique, photo of the really concrete sample can be mapped to finite element mesh. A reliable numerical sample with information about position, shape and size of aggregates inner sample can be generated directly through this process. During the process, a method using grading curve of the aggregate to decide the range of gray threshold value of concrete digital image has been proposed, so a routine can translate the photo to numerical sample automatically, and the impact of empirical is reduced. Finally, compared with the real concrete specimen under uniaxial tensile test, the results of the numerical simulation confirm the effectiveness of this method.

关 键 词：混凝土 图像处理 有限元 级配曲线 

分 类 号：TU528.01[建筑科学—建筑技术科学] TU502