This paper presents the study of construction scheme for large-scale deepwater foundation, including the alternative of locate mode for double-wall steel boxed cofferdam, design and arrangement of heavy anchorage system.

Design and construction of Mulanxi super large bridge's single wall steel suspending cofferdam

In the construction of pile cap of the part of the foundation,the construction scheme of double-wall steel boxed cofferdam plus anchorage without positioning by guiding barges was adopted.

Taking the construction of the elevated pile caps in deep water for main piers of Minjiang River Bridge on the newly-built Fuzhou-Xiamen Railway as an example,this paper presents the optimal design of the steel boxed cofferdam structures on the basis of mechanical analysis of the cofferdams subjected to different load cases.

The design and construction of boxed cofferdam of the Zhujiang bridge;

The double-wall steel boxed cofferdam for pylon pier No.

This paper briefs the fabrication and floating processes of the boxed cofferdams used for construction of pier bases of Paksey Bridge in Bangladesh, and describes the construction method for installation, bottom sealing and dismantling of the cofferdams without diving work.