铁道标准设计2016，Vol.60Issue(12)：8-12,5.DOI:10.13238/j.issn.1004-2954.2016.12.003
纵连板式轨道在墩台位移作用下梁轨相互作用规律研究
Beam and Track Interaction of Continuous-slab-track Subject to Pier Displacement
摘要
Abstract
In this paper, for the simply supported bridge and continuous bridge, the calculation model of integral bridges is established to analyze the rules of bridge-track interaction subject to the force caused by pier displacement. The results show that the force caused by pier displacement is a significant additional force between bridge and track. Thus, it is recommended that the force caused by pier displacement should be considered in the design of high-pier bridge due to great impact of sunshine and wind load. The continuous beams and simply supported beams are subjected to much the same force when their piers are shifted rightward, and various components of tracks and bridges suffer roughly equal additional forces, and larger the longitudinal displacement of piers, greater the force each additional member suffers. In case of simultaneous bridge stretching and pier shifting, the force and deformation of each member of the track and bridge are larger than those when only single factor is considered, and the force and deformation of continuous beams are larger than those of the simply supported beams. in comparison of beam displacement direction, when the displacement of bridge stretching the and pier moving are in the same direction, the force of rails, track plate, barbed end are relatively larger and the deformation of various components of tracks are relatively larger;when the bridges stretching and piers moving in the opposite direction, the shear gullet, the pier, and the base plate bear bigger longitudinal force. With respect to the point of loads coupling, when the coupling of bridges stretching and piers moving is considered, the force and displacement of track and bridge component are smaller than those when two loads are separated with the calculation of the results superposed, which is mainly due to the fact that the friction resistance of sliding layer and other tract restraining forces reach the plastic limits.关键词
纵连板式无砟轨道/无缝线路/墩台位移/梁轨相互作用Key words
Continuous-slab-track/CWR/Pier displacement/Bridge and rail interaction分类
交通工程引用本文复制引用
刘成,李帅,谢铠泽,田春香,王平..纵连板式轨道在墩台位移作用下梁轨相互作用规律研究[J].铁道标准设计,2016,60(12):8-12,5.基金项目
国家自然科学基金委“高速铁路基础研究联合基金”重点支持项目(U1334203&U1234201) （U1334203&U1234201）
