高速铁路箱式路基不同竖板数量与路基面位移研究  

Study on the Number of Different Vertical Plates and Roadbed Surface Displacement of High-speed Railway Box Roadbed

作　　者：金颖慧 胡子良 李春雨 刘晶磊[1] JIN Yinghui;HU Ziliang;LI Chunyu;LIU Jinglei(Hebei Umiversity of Architecture,Zhangjiakou,Hebei 075000)

机构地区：[1]河北建筑工程学院,河北张家口075000

出　　处：《河北建筑工程学院学报》2024年第4期59-63,共5页Journal of Hebei Institute of Architecture and Civil Engineering

摘　　要：路基是经过开挖或填筑而形成的轨道或者路面的基础,为轨道、路面铺设及列车或行车运营提供必要条件。路基作为高速铁路重要结构体系,研究路基动应力分布规律尤为重要。通过建立钢轨-路基-地基三维有限元模型,探究不同竖板数量的箱式路基面位移的分布规律。结果表明:通过建立钢轨-路基-地基三维有限元模型,发现竖板数量对路基面位移影响显著,箱式路基不同竖板数量,在顶板与竖板连接节点处所产生的集中应力会对箱式路基动应力分布产生显著影响,竖板越多,路基面位移变化趋势愈平缓,不同竖板数量的箱式路基面位移最大值为0.44 mm。A roadbed is the foundation of a track or pavement formed by excavation or reclamation,provide the necessary conditions for the laying of tracks,pavements and the operation of trains or trains.As an important structural system of high-speed railway,it is particularly important to study the dynamic stress distribution law of roadbed.By establishing a three-dimensional finite element model of rail-roadbed-foundation,the displacement and dynamic stress distribution law of box roadbed surface with different vertical plates are explored.The results show that by establishing a three-dimensional finite element model of rail-roadbed-foundation,it is found that the number of vertical plates has a significant influence on the displacement of the roadbed surface,and the number of different vertical plates of the box roadbed is different,the concentrated stress generated at the connection node of the top plate and the vertical plate will have a significant impact on the dynamic stress distribution of the box roadbed,the more vertical plates,the trend of roadbed displacement is gentle,and the maximum displacement of box roadbed surface with different vertical plates is 0.44mm.

关 键 词：高速铁路 箱式路基 路基面 位移变形 

分 类 号：U213.1[交通运输工程—道路与铁道工程]