摘要
路基上CRTS(China railway track system)Ⅲ型板式无砟轨道结构存在单元式和纵连式两种设计方案.通过建立纵横垂向空间耦合有限元计算模型,对两种设计方案在温度荷载、列车荷载、混凝土收缩及基础沉降变形作用下的力学特性进行了计算与对比分析.计算结果表明:对于严寒地区,基于温度荷载的影响较大以及轨道的可维修性,建议采用单元式结构.
A longitudinal-transverse-vertical spatial coupled model was established. A comparative study was made of the mechanical characteristics of two design schemes, unit style and longitudinal continued style, under the action of temperature load, vehicle load, concrete shrinkage and foundation settlement deformation. Analysis results show that the unit style is recommended for the severe cold area due to the influence of temperature load and maintainability of track.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第6期848-855,共8页
Journal of Tongji University:Natural Science
基金
铁道部科技研究开发计划项目(2010G018-D-2
2011G014-D)
中央高校基本科研业务费专项资金(2012JBZ011)
