With the development of railway construction in our country, the railway constructing standards and the train speed have improved increasingly. Then because of the restriction of complex terrain conditions, the stations with continuous welded rail ( CWR ) or the bridges with turnout area come into being. For example, The throat area of Zizhou Station in Taiyuan-Zhongwei (Yinchuan) Railway is located upon the super major bridge which spans Dali River. Based on the case of the girder with seamless turnout which changes two lines into four, through establishment of the physical model, the article carries out research on the structure property and the bearing's arrangement of the abnormal girder with large variation on its width, and puts forward the fundamental conditions and the patterns of bearing's arrangement.%随着我国铁路建设事业的发展,铁路建设标准和列车运行速度不断提高,由于受复杂地形条件限制,出现了无缝线路的车站或站前道岔区上桥的情况.太中(银)铁路子洲站的站前咽喉区位于跨大理河的特大桥上,以该桥上的双线变四线无缝道岔梁为例,通过建立实体元模型,对梁体宽度变化较大的异型梁的构造和支座布置进行研究,提出支座布置的基本条件和方式.
展开▼
