针对高速铁路桥上CPⅢ控制网高程上桥测量特点,设计了一种精密三角高程上桥测量装置,削弱了大气折光误差对高程上桥测量精度的影响,免除了桥下过渡水准点的埋设,使三角高程上桥测量路线的选择更为灵活,前后视高差可实现同步、自动观测,测量精度和测量效率得到提高,该装置在哈大高铁桥梁CPⅢ控制网水准测量中取得了良好的应用效果。 Aiming at the characteristics of upper bridge measurement of CPⅢ control network on high-speed railway bridge, a precision triangular elevation bridge measuring device is designed to weaken the influence of atmospheric refraction error on the measurement accuracy of upper bridge, which avoids the embedding, So that the choice of triangular elevation on the bridge measurement route is more flexible, the apparent height difference can be synchronized before and after, automatic observation, measurement accuracy and measurement efficiency are improved. The device has been applied in leveling measurement of CPIII control network of Harbin-Dalian high- effect.