Corrugated steel web Prestressed concrete box girder bridge, also known as corrugated steel web PC bridge, refers to the corrugated steel instead of prestressed concrete box girder concrete web for the web of the box beam, the notable feature is the use of 10 ~ 20mm thick steel instead of thick 30 ~ 80cm thick concrete web.

origin

In the 1980s, France first designed and built a new composite bridge named "Cognac" with corrugated steel webs instead of common concrete box girder webs. Later, several corrugated steel columns such as Maupre viaduct, Asterix bridge and Dole Web bridge.

development of

Since the 1990s, Japan has also studied such forms of bridges. On the basis of similar bridges in France, a series of bridges such as Xinkaiqiao, Benguqiao [1] and Songqiao VII have been constructed successively A continuous beam bridge, but also a continuous rigid frame bridge, broaden the scope of the use of such bridges, the development of the design and construction technology.

domestic

The corrugated steel web prestressed concrete composite box girder has no real bridge in the country, meanwhile, several such bridges are built in France / Germany, especially in Japan. Design and construction technology is maturing. Corrugated steel web prestressed concrete composite box girder, especially suitable for medium and long span continuous box girder. With the domestic analysis and research on this structure carried out in-depth, as well as the experience of foreign engineering practice, corrugated steel web prestressed concrete composite box girder will be applied in our country's bridge construction.