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| 基于单轴压缩CT实验条件下混凝土破裂分形特性分析 | |
| 引用本文： | 周尚志,党发宁,陈厚群,梁斌.基于单轴压缩CT实验条件下混凝土破裂分形特性分析[J].水力发电学报,2006,25(5):112-117. |
| 作者姓名： | 周尚志 党发宁 陈厚群 梁斌 |
| 作者单位： | 1. 西安理工大学水利水电学院,西安,710048;长沙理工大学桥梁与结构学院,长沙,410076 2. 西安理工大学水利水电学院,西安,710048 3. 西安理工大学水利水电学院,西安,710048;中国水利水电科学研究院,北京,100044 4. 长沙理工大学桥梁与结构学院,长沙,410076 |
| 摘 要： | 本文首先利用单轴压缩条件下混凝土CT资料,对有裂纹出现的σ=20.59~31.03MPa阶段的CT图像进行了裂纹提取操作。在所取得的裂纹图像的基础上,利用码尺法、盒计数法、小岛法和Sandbox法对其分维数进行了计算。最后,对裂纹分维数随加载过程的变化进行了分析,利用分维数的演化信息讨论了混凝土破裂的分形特性。 |
| 关 键 词： | 建筑材料 分形特性 裂纹 混凝土 |
| 收稿时间： | 2006-03-21 |
| 修稿时间： | 2006年3月21日 |
Fractional characteristics of damage and fracture of concrete under the uniaxial compression CT test |
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| ZHOU Shangzhi,DANG Faning,CHEN Houqun,LIANG Bin.Fractional characteristics of damage and fracture of concrete under the uniaxial compression CT test[J].Journal of Hydroelectric Engineering,2006,25(5):112-117. | |
| Authors: | ZHOU Shangzhi DANG Faning CHEN Houqun LIANG Bin |
| Abstract: | Firstly,the cracks which appear in the CT images scanned at the stage of stresses from 20.59MPa to 31.03MPa are obtained from these images by means of CT data from concrete under the uniaxial compression condition.Based on the these binary images of cracks,the fractional dimensions of cracks in the concrete are computed by the methods of Yardstick,Box-counting,Island and Sandbox.Finally,the relations between the fractional dimensions of cracks and the loading process are analyzed,Simultaneously,the fractional characteristics of the damage and fracture of concrete are discussed by the evolution information of the fractional dimensions. |
| Keywords: | CT |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |