Hydraulic Pier Structure In Yangshan Anti-corrosion Durability Of The System

During the period of "the tenth five-year's plan", the biggest project of city's base construction in Shanghai - Yang Shan deep-draft port has built. The build of Yang Shan deep-draft port is an important resolution by the Party Central Committee and the State Council, it has a particular sense for the construction of Shanghai international shipping center.Yang Shan deep-draft port belongs to seaport engineering, which tenure of use is fifty years. Actually, they would be damaged seriously of corrosion, then expensive maintenance would be put in for safety of the structure and regular use. Seaport structure in the environment of seawater surrounded, influenced by both physical and chemical reaction, such as water, chloride, oxygen, carbonization, corrosion of steel, freeze etc, would cause the corrosive damages. The corrosive damages of seaport structure main include corrosion of steel pipes, concrete and steel reinforcing bar.All over the world, the amount of economic loss because of tech has reached to 6000-12000 hundred million u.s. dollar ever year, faces 2%-4% of all country's GNP. It is more than six times loss of natural calamity (earthquake, typhoon, flood). While at least 40% of the loss can be retrieved when proper protection was put into pracyice. In a word, researching the anti-corrosive technologies of the seaport engineering, extending new technologies, new technological processes, new materials, improving the effects and qualities, decreasing the damages of seaport structure by harmful materials, lengthening the tenure of use, it has a particular actuality and economic sense.The anti-corrosive works of the structure in seaport engineering is a systems engineering including diversified technologies, not one technology. This essay present deep search and summary in four technologies as anti-corrosive coat of steel pipe, lost zinc protect steel pipe, anticorrosive concrete for seaport engineering, anti-corrosive coat of steel reinforcing bar. Comparing objectively with several antiseptic technics, finally we can verify the feasibility of the research in this text in practical application by examples.which offers fundamental research to implementation of similar projects.