铁道科学与工程学报2017，Vol.14Issue(10)：2059-2064,6.
基于图像的CRTSⅡ型轨道板面横向裂纹扩展特征分析
Characteristic analysis of transverse crack growth for CRTS Ⅱ slab track based on image processing
摘要
Abstract
After serving for a long time, the surface of CRTS Ⅱ slab track generates crack with the positions and directions varied. It was found from the on-the-spot investigation that, in the vicinity of rail support platform, the transverse crack in slab track was salient. By using the image processing techniques and fractal theory, the paper analyzed the character of transverse crack growth for slab track. The computation shows that support rail bed has a concentrated load effect, which makes the slab track nearby easy to appear crack; the edge of slab track prestressed rebar is easy to appear earlier cracking phenomena. In addition, the crack will grow along the prestressed rebar direction; the cracks in slab track has fractal feature, and the fractal dimension will enlarge with the increase of crack length. The results can be used as characteristic attribute index for crack growth of slab track.关键词
CRTSⅡ型轨道板/裂纹/分形/图像处理Key words
CRTS Ⅱ slab track/crack/fractal/image processing分类
交通工程引用本文复制引用
史云飞,何越磊,张志远,李再帏..基于图像的CRTSⅡ型轨道板面横向裂纹扩展特征分析[J].铁道科学与工程学报,2017,14(10):2059-2064,6.基金项目
上海市科学技术委员会科研计划项目(14110501300) （14110501300）
上海工程技术大学研究生科研创新资助项目(15KY1001) （15KY1001）
