铁道标准设计Issue(8)：48-52,5.DOI:10.13238/j.issn.1004-2954.2014.08.011
高墩刚构桥基础不均匀沉降对无缝线路的影响研究
The Effect on Continuous Welded Rail Caused by Uneven Foundation Settlement of High-pier Rigid frame Bridge
摘要
Abstract
If post-acceptance settlement occurs at the pier of a long-span high-pier rigid frame bridge, there will be settlement difference between longitudinal and lateral directions of the pier, and the settlement difference will cause a longitudinal or lateral deflection of the pier. Focusing on the problem of bridge pier deflection, and taking a certain continuous welded rail on a large-span high-pier rigid frame bridge as an example, this study established a spatial integrated model of track-bridge-pier by using finite element method, and analyzed the effect on the continuous welded rail caused by the longitudinal and lateral deflections of bridge pier. The results show that:( a) As the longitudinal deflection angle of bridge pier increases, the additional force of the rail will approximately linearly increase; when coupling the longitudinal deflection of bridge pier with the temperature load, the rail's longitudinal force caused by the longitudinal deflection of bridge pier will change marginally. ( b) The lateral deflection of bridge pier mainly causes the irregularity of rail's long wave;the deformation and irregularity of rail will increase with the increase of the lateral deflection angle of bridge pier;when the lateral deflection angle of bridge pier is relatively large, there will be a lot of over-limit irregularities along the whole continuous welded rail on the bridge, and the over-limit irregularities will mainly occur at the left and right bridge abutments as well as at the juncture between two girders of the bridge.关键词
铁路桥/刚构桥/偏转/无缝线路/稳定性Key words
railway bridge/rigid frame bridge/deflection/continuous welded rail/stability分类
交通工程引用本文复制引用
马旭峰,胡志鹏,谢铠泽,王平..高墩刚构桥基础不均匀沉降对无缝线路的影响研究[J].铁道标准设计,2014,(8):48-52,5.基金项目
中央高校基本科研业务费专项资金资助项目(编号:2682013CX043) （编号:2682013CX043）
