Research on Design and Key Technique of Minjiang Changmen Bridge in Fuzhou City

Minjiang Changmen Bridge in Fuzhou City is a hybrid girder cable-stayed bridge used the pylon-girder fixed system for the first time in China,and the main span exceeds 550 meters.In this paper,the construction condition,design of bridge type and structure of this bridge are mainly introduced.The key techniques including the comparison between the differences sites of steel-concrete joint part,optimum of structures system,the local stress analysis of pylon-girder fixed region,structure property of the seismic and wind resistance performance,etc are specific discussed in this work.