南京长江二桥南汊桥主塔基础钢围堰施工测量

The Steel Cofferdam Construction Surveying of the Main Tower's Foundation of the South Branch of NO.2 Yangtze River Bridge of Nanjing

对大型斜拉桥主塔基础钢围堰的制作、拼装、定位及下沉的施工测量作了全面论述。包括大型双壁钢围堰的底节制作、拼装接高、基准面传递、精密定位着床、吸泥下沉至着岩、清基及竣工测量。旨在为大型斜拉桥建设提供可行的主塔基础钢围堰施测方法。

This paper deals with the construction surveying of manufacture, installation, positioning and settlement of steel cofferdam of main towers foundation for a large cable bridge. It contains cofferdams 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.