铁道科学与工程学报2016，Vol.13Issue(7)：1229-1233,5.
列车荷载作用下C RTSⅢ型板式无砟轨道力学特性试验研究
Experi mental study on the mechanical characteristics of CRTSⅢslab ballastless track u nder train load
摘要
Abstract
In order to study the fatigue properties of CRTSⅢslab track on roadbed under train load,an experi-ment study was carried out on the dynamic characteristics of CRTSⅢslab track structure on roadbed under high-speed train load.The full-scale test model of CRTSⅢ slab track structure based on track-subgrade dynamic model test system was established and the dynamic evolution characteristics of each layer after 7.2 million fatigue load tests were obtained.The results show that the deformation of isolated layer,the acceleration of slab,and the stress of self-compacting concrete reduce,while the acceleration and stress of base increase with the increasing number of train load applications.According to the variation law of the deformation of isolated layer,the relation-ship between the stiffness of isolated layer and number of load applications was obtained through data fitting.The research is useful to guide the mechanical properties study and condition assessment of CRTSⅢslab track struc-ture.关键词
CRTSⅢ型板式无砟轨道/试验/力学特性/隔离层刚度Key words
CRTSⅢ slab ballastless track/experiment/mechanical characteristics/stiffness of isolation layer分类
交通工程引用本文复制引用
吴斌,朱坤腾,曾志平,余志武,魏炜..列车荷载作用下C RTSⅢ型板式无砟轨道力学特性试验研究[J].铁道科学与工程学报,2016,13(7):1229-1233,5.基金项目
中南大学研究生创新项目（2016ZZTS396）；高铁CRTSⅢ型板无砟轨道结构疲劳性能试验研究（SY2016G001）；南昌铁路局科技开发计划资助项目（201524）；高速铁路基础联合基金资助项目 （）
