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Study on Underwater Tunnel Tube Positioning and Posture Monitoring of GANG-ZHU-AO Bridge
Pages: 25-28
Year: Issue:  5
Journal: Hydrographic Surveying and Charting

Keyword:  港珠澳大桥姿态挠度管段坐标系地理坐标系坐标转换三维沉管模型;
Abstract: 重点介绍了针对港珠澳大桥海底沉管对接过程中水下精密定位及姿态监测技术方法,采用了水上RTK定位与水下姿态监测技术相结合,并实时监测测量塔挠度,通过三维坐标转换实现了高精度的对接定位及姿态监测,开发可视化仿真模拟软件,指导沉管水下对接.简要介绍了安装定位过程的实施步骤、关键工序和定位精度分析.
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