铁道科学与工程学报2016，Vol.13Issue(8)：1466-1473,8.
桥上CRTS II型板式轨道裂缝及钢筋锈蚀时变规律
Monitoring of the evolution of crack and steel bar corrosion of CRTS II slab trackon bridge
摘要
Abstract
A monitoring system was installed in CRTS II slab track on bridge in this study,which can monitor the track temperature field,the typical crack change rules and internal steel bar corrosion rate.The results show that the crack daily variations of the slab and base are about 0.2 mm and 0.1 mm respectively.The crack width of the slab and base increased with the decrease of temperature.The change of the base crack is obviously lower than that of the slab,which is consistent with the temperature field distribution of the slab track.The monitoring data of the steel corrosion rate of two years indicates that in spite of the low corrosion rate of the internal steel, the corrosion rate increases with time.If the crack is not repaired timely,the design service life of ballastless track will not be secured.关键词
CRTS II 型板式无砟轨道/裂缝/耐久性/锈蚀Key words
CRTS II slab track/crack/durability/corrosion分类
交通工程引用本文复制引用
郭建光,元强,曾志平..桥上CRTS II型板式轨道裂缝及钢筋锈蚀时变规律[J].铁道科学与工程学报,2016,13(8):1466-1473,8.基金项目
中国铁路总公司科技研究开发计划项目 （）
