超宽变宽管节的高精度沉放对接  

High Precision Sinking and Butting of Super Wide and Width Variable Tube Segments

作　　者：池明华 唐善军 钟汉滨 林国庆 CHI Ming-hua;TANG Shan-jun;ZHONG Han-bin;LIN Guo-qing(Guangzhou Salvage Bureau,Guangzhou 510220,China;Guangdong Engineering Technology Research Center of Ocean Engineering and Water Emergency Rescue,Guangzhou 510220,China)

机构地区：[1]广州打捞局,广州市510220 [2]广东省海洋工程施工与水上应急救援工程技术研究中心,广州市510220

出　　处：《公路》2024年第5期23-27,共5页Highway

基　　金：国家重点研发计划(面向海洋重大工程的精密定位关键技术及应用示范),项目编号2023YFB3907200。

摘　　要：通过ANSYS Mechanical APDL软件分析模块计算了深中通道中沉管隧道的超宽变宽管节在水下(管底)受压情况。超宽变宽管节的沉放与对接的测量定位以GPS RTK方式为主,全站仪作为辅助,并对关键步骤进行了复核。在管节安装后管内采用激光测距仪按照预制时检测点位进行净高测量,并对管节姿态及测量塔姿态进行了更加精确的监测,消除了因超宽变宽引起的管节变形导致的测量误差,实现了管节的高精度沉放对接。The ANSYS Mechanical APDL software analysis module is used to calculate the underwater compression condition of the ultra-wide and width variable tube section of immersed tunnel of the Shenzhen-Zhongshan Link Project.GPS RTK is the main method for measuring and positioning the sinking and docking of the ultra-wide and width variable tube segments,with the assistance of total station,the key steps are reviewed.After the tube segments is installed,the laser rangefinder is used to measure the net height according to the detection point of the prefabricated tube section,and the attitude of the tube section and the attitude of the measuring tower are monitored more accurately.The measurement error caused by the deformation of the tube section caused by the widening of the ultra-wide tube section is eliminated,and the high-precision sinking and butting of the tube section is realized.

关 键 词：深中通道 沉管隧道 超宽变宽管节 沉放对接 管节变形 

分 类 号：U459.5[建筑科学—桥梁与隧道工程]