Three Dimensional Navigation System for Marine Structures using Total Stations
Masatoshi IZUMI, Akira Komatsu · PROCEEDINGS OF CIVIL ENGINEERING IN THE OCEAN · 1991
The revetment of the artificial island in Trans Tokyo Bay is constructed by forming several gigantic steel jackects into a ring. A high accuracy of location and level is necessary for setting these jackets because of maintaining toughness by forming a ring, ensuring verticality for lagging and tunnelling through steel piles. The accuracy demanded the work was within ±10cm for location and ±5cm for level.In the installation work, the jacket is hung and moved by a crane or shifted by an anchor operation to the planned position. If the survey is carried out after the installation, we must repeat installation and survey works till satisfing the accuracy.Theleft-lettore we have developed three dimensional navigation system that can navigate jackets with a real time and a high accuracy using two total stations.