The partial low pile cap deep water foundations of Qinhong Bridge are located in the flood discharge channel and near by existing civil bridge foundations in Nanjing.

Analysis was made of problems in steel cofferdam con struction for deep water foundation.

Prevention of drift sand and piping phenomenon in deep foundation construction;

Precast concrete hollow slab of after-prestressing force using in slop wall of deep foundation;

Utilizing deep foundation as underground opening framework;

Double-wall steel cofferdam is the important facility of bridge s deepwater foundation.

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.

Large-scale deep-water foundation steel slip jacket cofferdam construction practice of the super bridge;

Since the dimensions and loads imposed on the single-wall steel cofferdam of deep-water foundation for Yuxi Road Bridge in Chaohu city are large and the structure is complex,three-dimensional analysis by means of FEM program for force status of the monolithic structure has been made in order to study its mechanic features and.

With the special geological conditions of the Apenjiang Bridge of the Yu-Huai Railway as a practical example, the paper introduces the construction technology for high & low single-wall, edge-foot and orientation supporting stake in deep-water foundation double-wall steel-cofferdams, to ensure the stability of double-wall steel-cofferdams.

Here is the parameter adopted in the structure design of Professor’s Flat in Shandong Sports College, including practicable rise, rise-to-width ratio, structure ground plan, quakeproof joint and settlement joint, depth of foundation etc.

On this basis,we put forward the depth of foundation to the hydraulic protection project according with the actual situation,thus pro.