摘要
在结构特点分析的基础上,考虑层间传力关系和横向相邻股道的影响,建立了大跨度连续梁桥上CRTSⅡ型板式无砟轨道纵向力计算的空间一体化模型和求解方法。计算分析了列车制动和温度变化作用下底座板伸缩刚度对大跨度连续梁桥上CRTSⅡ型板式无砟轨道纵向力的影响规律,结果表明:列车制动和温度变化作用下系统纵向力变化规律相同,随着底座板伸缩刚度降低,钢轨和桥梁墩台纵向力增加,复合板、剪力齿槽和端刺纵向力减小。
Based on the structural characteristic analysis of CRTSⅡ slab ballastless track on long-span continuous beam bridge,a spatial integer computational model for longitudinal force was established.In the model,force transfer between all kinds of layers and influence of adjacent lane were taken into account.A solution method of the model was given.The influence laws of telescopic stiffness of foundation plate on longitudinal force between CRTSⅡ slab ballastless track and long-span continuous beam bridge were analysed under the effect of train braking and temperature change.The computational results show that the influence laws of telescopic stiffness of foundation plate under the effect of train braking and temperature changes are the same.The longitudinal forces of rail,pier and abutment increase,while the longitudinal forces of composite slab,joint and terminal spine decreases with the diminution of telescopic stiffness of foundation plate.
出处
《福建工程学院学报》
CAS
2011年第1期1-6,共6页
Journal of Fujian University of Technology
基金
铁道部科技研究发展计划项目(2008G031-I)
福建工程学院引进人才基金项目(GY-Z10056)
关键词
底座板
伸缩刚度
连续梁桥
CRTSⅡ型板式无砟轨道
纵向力
foundation plate
telescopic stiffness
continuous beam bridge
CRTSⅡ slab ballastless track
longitudinal force
