港珠澳大桥首级GPS控制网建立与复测研究  

Study on establishment and repetition survey of the first order GPS control network of Hong Kong-Zhuhai-Macao Bridge

作　　者：熊伟[1] 赵敏 吴迪军[1] XIONG Wei;ZHAO Min;WU Dijun(China Zhongtie Major Bridge Reconnaissance&Design Institute Co.Ltd.,Wuhan 430050,China;Hubei Surveying and Mapping Engineering Institute,Wuhan 430050,China)

机构地区：[1]中铁大桥勘测设计院集团有限公司,武汉430050 [2]湖北省测绘工程院,武汉430070

出　　处：《导航定位学报》2019年第1期117-120,共4页Journal of Navigation and Positioning

摘　　要：针对港珠澳大桥首级GPS控制网跨海距离长、边长相差悬殊、图形结构差、测区内卫星定位误差影响大及跨海两岸三地测量基准不统一等问题,开展特大型跨海桥隧工程首级GPS控制网建立与复测的技术研究,提出较为完整的特大型跨海桥隧工程首级GPS控制网测量的技术方法,包括工程坐标系设计与建立、首级GPS控制网精度设计、网形设计、外业观测、数据处理及控制点稳定性分析方法等。应用该方法设计和建立了港珠澳大桥首级GPS控制网,并在建设期间完成了8次复测,以第5次复测为例,对控制网测量方法、成果精度及控制点稳定性进行分析论证。Aiming at the problems such as long distance across the sea,big difference in side length,poor graphic structure,great influence of satellite positioning error in surveying area and inconsistent surveying datum of the three places across the sea of the first order GPS control network of Hong Kong-Zhuhai-Macao Bridge,the technical study of the establishment and repetition surveying of the first order GPS control network for super large sea-crossing bridge and tunnel engineering is carried out.A whole set of technical surveying methods of GPS control network for super large cross-sea bridge and tunnel project is put forward,including the design and establishment of the engineering coordinate system,the precision design,net shape design,field observation,data processing of the first order GPS control network and control point stability analysis method and so on.Using this method,the first order GPS control network of Hong Kong-Zhuhai-Macao Bridge is designed and established and eight times of repetition survey are completed during the bridge construction period.Taking the fifth repetition survey as an example,the surveying method,the precision of the measurement results and the stability of the control points are analyzed and demonstrated.

关 键 词：港珠澳大桥 首级GPS控制网 坐标系统设计与建立 精度与网形 控制点稳定性分析 

分 类 号：P228[天文地球—大地测量学与测量工程]