| 港珠澳大桥隧道沉管安装定位及姿态监测技术 |
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| 引用本文： | 张彦昌,黄永军.港珠澳大桥隧道沉管安装定位及姿态监测技术[J].海洋测绘,2012,32(5):25-28. |
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| 作者姓名： | 张彦昌 黄永军 |
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| 作者单位： | 1. 交通运输部天津水运工程科学研究所,天津,300456
2. 天津海事局海测大队,天津,302222 |
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| 摘 要： | 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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| 关 键 词： | 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 |
Study on Underwater Tunnel Tube Positioning and Posture Monitoring of GANG-ZHU-AO Bridge |
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| ZHANG Yanchang,HUANG Yongjun.Study on Underwater Tunnel Tube Positioning and Posture Monitoring of GANG-ZHU-AO Bridge[J].Hydrographic Surveying and Charting,2012,32(5):25-28. |
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| Authors: | ZHANG Yanchang HUANG Yongjun |
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| Institution: | 1.Tianjin Research Institute for Water Transport Engineering,M.O.T.,Tianjin 300456,China; 2.Hydrographic Surveys Brigade,Tianjin Maritime Safety Administration,Tianjin 302202,China) |
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| Abstract: | This paper mainly introduce the key points on underwater tunnel tube positioning and posture monitoring of GANG-ZHU-AO Bridge,a combining method of above water-level positioning technology RTK GPS and under watet posture-monitoring technology and real-time measuring of the deflection of surveying tower.By coordinates transformation,we carry out the precise positioning and posture-monitoring of tunnel tubes,and develop the visual simulation software to guide the underwater jointing of tubes.The paper also briefly introduce the key steps and key process control and accuracy anylasis during installation and positioning. |
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| Keywords: | GANG-ZHU-AO Bridge posture monitoring tube coordinate system geographical coordinate system coordinate transformation 3-D tube model |
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