It introduces the disaster features of seaside low building in typhoon,and analyzes main reasons which caused this kind of disaster from many aspects,such as basic wind pressure in some parts,windy parameters,max value,building style,structure and constructing process,so as to furtherly bring forward some feasible and effective anti-wind and wind-protection measures.

The paper introduces the conception of the bridge type option,the overall design of the main bridge and structural construction,structural static analysis and stable analysis.

The characteristics,the structure construction,the construction process of Japanese underground diaphragm wall with steel structure,the things to be noted in the design and construction and construction practice etc.