铁道科学与工程学报2018，Vol.15Issue(5)：1128-1133,6.
持续高温作用下CRTSⅡ型无砟轨道层间离缝分析
Analysis of interface seam of CRTSⅡ slab track under sustained high temperature
摘要
Abstract
Due to the sustained load of temperature gradient, it appears the interface seam between slab and mulsified asphalt cement mortar layer of CRTSⅡ slab track easily under the sustained high temperature in Summer. Based on the field measured data of temperature and slab temperature gradient, the feature of occurrence and development of interface seam under sustained positive temperature gradient load is analyzed by finite element method. The results showed the whole slab temperature higher than temperature,and although the positive temperature gradient has not exceeded 90 ℃/m which is specified by code during the mechanism of temperature stress,it generates interface seam as well. By comparing the affect of sustained high temperature and 90 ℃/m,the interface damage is relatively close. The phenomenon of interface seam which is near the corner of slab is worse than other location. It is suggested the railway engineering department pays attention to the influence of working capabilities of slab track under sustained high temperature.关键词
CRTSⅡ型板式无砟轨道/持续高温/温度梯度/层间离缝Key words
CRTSⅡslab track/sustained high temperature/temperature gradient/interface seam分类
交通工程引用本文复制引用
钟垚,何越磊,路宏遥,李再帏..持续高温作用下CRTSⅡ型无砟轨道层间离缝分析[J].铁道科学与工程学报,2018,15(5):1128-1133,6.基金项目
上海市科学技术委员会地方院校能力建设资助项目(14110501300) （14110501300）
上海工程技术大学研究生科研创新资助项目(16KY1011) （16KY1011）
