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高速铁路轨道铺设在平面和高程上要求很高的位置精度。但在桥梁施工后,已很难用几何水准测量方法将地面上水准点的高程传递到桥面上。本文介绍了在高速铁路特大桥无碴轨道施工测量中,采用三角高程测量方法将地面水准点的高程传递到桥面临时水准点上,使CPⅢ精密水准测量能与地面二等水准点附合,以满足无碴轨道施工测量要求。
High-speed railway track laying in the plane and height requirements of the high position accuracy. However, it is difficult to use the geometric leveling method to transfer the elevation of the leveling point on the ground to the bridge deck after the construction of the bridge. In this paper, the construction of ballastless track on the high-speed railway super-large bridge is introduced. The elevation of the ground leveling point is transferred to the temporary leveling point of the deck by the trigonometric leveling method so that the CPⅢ precision leveling can be attached to the second- To meet the ballastless track construction measurement requirements.