摘要
首先介绍了港珠澳大桥沉管隧道碎石基础铺设高程精度的重要性。使用GPS-configurator软件设置GNSS输出数据格式为GGA,利用超级终端软件将GNSS数据实时输出并进行分析处理,剔除差分信号不能固定的时间段,避免失锁条件下的施工,确保了基床铺设期间的GNSS高程精度,最终实现最大水深50m的高精度碎石基础铺设。
This paper first introduces the importance of the elevation precision for the immersed tunnel macadam foundation laying of the Hong Kong-Zhuhai-Macao Link Project.The GNSS output data format is GGA by GPS-configurator software,the GNSS data is output and processed by the Hyper Terminal software,and the time period with the difference signal cannot be fixed is deleted,the construction under the condition of unlocking is avoided,the GNSS height precision during the laying of the macadam foundation is ensured,and the laying of the macadam foundation with maximum water depth of 50 mhigh accuracy.
作者
张超
魏红波
孙阳阳
ZHANG Chao;WEI Hong-bo;SUN Yang-yang(No.2 Engineering Company Ltd.of CCCC First Harbor Engineering Company Ltd.,Qingdao 266071,China)
出处
《公路》
北大核心
2018年第8期26-31,共6页
Highway
关键词
港珠澳大桥
沉管隧道
基础铺设
高程精度
GNSS
超级终端
Hong Kong-Zhuhai-Macao Link Project
immersed tunnel
foundation laying
height precision
GNSS
Hyper Terminal
