青龙湾大桥施工测量关键技术

Construction Surveying Key Technology of Qinglong Bay Bridge

青龙湾大桥全长2.304km,桥梁全长1 307m,其中浅海段1 104m,主桥是(60+100+60)m三跨连续变截面箱梁,引桥是40m跨径的先简支后连续预制小箱梁桥。在大桥施工前对整桥控制网进行复测和加密,然后根据工程对导线精度的要求,布设相应的闭合导线或附合导线。着重讲述了在施工环境复杂、精度要求高、海洋气候恶劣的情况下对跨海大桥的测量控制及关键测量技术。

The length of Qinglong Bay Bridge is 2. 304 km,bridge length is 1 307 m,where the shallow segment is 1 104 m,the main bridge is 60 ＋ 100 ＋ 60 meters three-span continuous uniform box girder bridge. The supported bridge is a 40 meters span prefabricated girder bridge. Before the bridge construction,the whole bridge control network are retested and encrypted,and then based on the requirement of wires accuracy,the closed wine connecting wires are arranged. Combining with complex environment in the construction, high precision requirement, the harsh weather conditions, the measurement control and key measurement technology is introduced.