GNSS精密控制网在特大型桥梁施工监测中的应用——以虎门二桥为例  

Application of GNSS precision control network in super large bridge construction monitoring: a case of the second Humen bridge

作　　者：王晓明 曾旭平[2] 马鑫程[2] 杨红 辛明真 王发省 阳凡林[1,4] WANG Xiaoming;ZENG Xuping;MA Xincheng;YANG Hong;XIN Mingzhen;WANG Faxing;YANG Fanlin(College of Geomatics,Shandong University of Science and Technology,Qingdao 266590,China;CCCC Highway Consultants Co.,Ltd.,Beijing 100088,China;Three Gorges Geotechnical Consultans Co.,Ltd.,Wuhan 430070,China;Key Laboratory of Surveying and Mapping Technology on Island and Reef,National Administration of Surveying,Mapping and Geoinformation,Qingdao 266590,China)

机构地区：[1]山东科技大学测绘科学与工程学院,山东青岛266590 [2]中交公路规划设计院有限公司,北京100088 [3]长江三峡勘测研究院有限公司(武汉),湖北武汉430070 [4]海岛(礁)测绘技术自然资源部重点实验室,山东青岛266590

出　　处：《全球定位系统》2019年第5期106-110,共5页Gnss World of China

摘　　要：以虎门二桥为例,介绍了全球卫星导航系统(GNSS)精密定位技术在特大型桥梁中的具体应用,在基线解算时,通过提高概略坐标精度、选择合适的解算策略、合理的约束条件等提高控制网解算精度,使得控制网成果的各项精度指标满足要求.对虎门二桥8期测量成果的统计,进一步验证了控制网的测量精度,通过对部分点位坐标较差的计算,统计了点位的具体变动情况,采用单点检验法评定了控制点的稳定性,为其他类似跨海工程控制网提供了参考.Taking the second Humen bridge as an example,this paper introduces the specific application of GNSS precision positioning technology in extra large bridges.When calculating baseline,the precision of the control network is improved by improving the precision of the approximate coordinates,choosing the appropriate solution strategy and reasonable constraints,so that the accuracy of the control network results can be improved,and the indicators meet the requirements.The measurement accuracy of the control network is further validated by the statistics of the survey results of Phase 8 of Humen Second Bridge.By calculating the poor coordinates of some points,the specific changes of the points are counted.The stability of the control points is evaluated by the single point test method,which provides a reference for other similar cross-sea engineering control networks.

关 键 词：基线解算 GNSS首级控制网 精度分析 单点检验法 稳定性分析 

分 类 号：P288.4[天文地球—地图制图学与地理信息工程]