摘要
建立连续梁桥上CRTSⅡ型板式无砟轨道纵向力计算模型和求解方法,分析滑动层摩擦系数、底座板伸缩刚度和扣件纵向阻力对大跨度连续梁桥上伸缩附加力的影响.结果表明:降低滑动层摩擦系数和扣件纵向阻力可以减小钢轨和底座板伸缩附加力,增加底座板伸缩刚度可以减小钢轨和桥梁墩台伸缩附加力.
A spatial integer computational model for longitudinal forces was established of CRTS Ⅱ slab ballastless track on continuous beam bridge, and a solution method of the model was given. The influences of frictional factor of sliding layer, flexible stiffness of foundation plate and longitudinal re- sistance of fasten on additional expansion and contraction forces were analyzed about CRTS Ⅱ slab bal- lastless track on long -span continuous beam bridge. Analysis results show that the additional expan- sion and contraction forces of rail and foundation plate decrease with the diminution of frictional factor of sliding layer and longitudinal resistance of fasten, the additional expansion and contraction forces of rail, pier and abutment decrease by increasing flexible stiffness of foundation plate.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第3期383-387,共5页
Journal of Fuzhou University(Natural Science Edition)
基金
福建省自然科学基金资助项目(2011J05120)
铁道部科技研究发展计划资助项目(2008G036-D)
福建工程学院科研启动基金资助项目(GY-Z10056)
关键词
大跨度
连续梁
梁桥
板式无砟轨道
附加力
long- span
continuous beam
beam bridge
slab ballastless track
additional forces
