苏通大桥南主塔墩特大型钢吊箱GPS-RTK测量监控技术

The Sutong Bridge South Pylon Special Big Steel Cofferdam GPS-RTK Surveying And Controlling Technique

苏通大桥南主塔墩承台钢吊箱长117．35m,宽51．7m,高14．4m,总重量达5800t,是目前世界上体积及重量最大的桥梁钢吊箱,本文阐述了在钢吊箱的拼装、下放及就位三个关键施工环节中,以GPS RTK卫星定位技术为主要测量手段的钢吊箱施工测控技术。

The Sutong Bridge South Pylon pile cap steel cofferdam is 117.35 m long,51.7 m wide,14.4 m high,5800 t heav- y,the steel cofferdam is the biggest and the heaviest bridge cofferdam in the world currently.The article elaborates the GPS RTK satellite position technique which is the main measure means for the steel cofferdam construction measure controlling tech- nique during the steel cofferdam three pivotal construction links which are assembling,putting down and taking its place.