基于北斗系统的长江口半圆体挡沙堤再加高结构设计及高程控制  

Design and Elevation Control of Heightened Semi-circular Sand-retaining Dike at Yangtze River Estuary Based on Beidou System

作　　者：石进 李晓舟 黄东海 Shi Jin;Li Xiaozhou;Huang Donghai(Yangtze Estuary Waterway Administration Bureau,Ministry of Transport,Shanghai 200003,China;CCCC Shanghai Waterway Engineering Co.,Ltd.,Shanghai 200120,China)

机构地区：[1]交通运输部长江口航道管理局,上海200003 [2]中交上海航道勘察设计研究院有限公司,上海200120

出　　处：《港工技术》2021年第6期27-30,共4页Port Engineering Technology

摘　　要：长江口南坝田挡沙堤原有堤身构件安装时间长,各段不同沉降后高程存在一定差异,采用统一型号的构件加高将难以达到质量检验标准对高程偏差的控制要求的问题。研究采用似大地水准面精化后的北斗定位技术获得高精度的工前测量数据,通过设计不同高度型号的块体一一对应施工,取得了良好效果。相关技术可为类似航道整治工程提供参考。Nanbatian sand-retaining dike is located at estuary of the Yangtze River,longer installation period of dike caused the difference in the settlement of structural parts,and led to different elevations.To heighten the dike by using the component with unified model number was not able to satisfy the control requirements for elevation deviation specified in the related quality inspection standard.Beidou positioning technique based on Quasi-geoid was used to obtain high-precision pre-construction survey data.The blocks with different height and model numbers were designed and applied in the construction respectively,which achieved good results.The related technologies may provide a reference for similar waterway regulating works.

关 键 词：北斗系统 长江口 半圆体加高 高程控制 

分 类 号：U656.24[交通运输工程—港口、海岸及近海工程]