Single girder bridge is only one track, so only to find a point at both ends of each elevation can be the same.
单主梁桥架上只有一个轨道，所以只找出两端各一点的标高相同即可。
2
To analyse the demand of transverse rigidity and the strengthening scheme of deck plate girder according to the raising speed experiment of the existing track.
通过既有线铁路提速试验，分析了上承钢板梁横向刚度的要求，提出合理的加固方案。
3
The utility model relates to an elevated track and in particular relates to a U-shaped girder for an elevated track.