By making use of combat readiness boat & bridge equipment in the construction of Tianjin rainbow bridge, the construction technique, the key points ,main performance of equipment ,quality control of large scale steel stake cofferdan quality are introducd.

The paper describes the researches on the technologies for driving of large assembled steel sheet piles in Caofeidian Coal Terminal,selection of the final driving method and implementation of the selected method.

The deep water cushion cap steel plate pile coffered construction technique;

The supporting analysis on the deep foundation ditch steel plate pile of cushion cap;

Analysis of the steel plate pile supporting planning of deep foundation excavation

Structure design of Donghu tunnel steel sheet pile cofferdam;

The application of steel sheet pile in one electricity tunnel engineering;

Checking calculation for foundation pit supporting with steel sheet pile of underground passageway;