The Steel Cofferdam Construction Surveying of the Main Tower's Foundation of the South Branch of NO.2 Yangtze River Bridge of Nanjing
Huang Zhangyu ① Huang Teng ① Zhao Zhongrong ① Li Zhiping ② (① Hehai University, Nanjing, 210024; ② Bridge Design Institute Engineering Supervision Co., Nanjing, 210005)
This paper deals with the construction surveying of manufacture, installation, positioning and settlement of steel cofferdam of main towers foundation for a large cable bridge. It contains cofferdams bottom manufacture, installation, level transmition, precise positioning, sinking to the rock and finishing measure. This is aimed at providing an effective measuring method for such kind of cofferdam construction.