Structural System And Analysis Method Study Of Super-Span Combine Cable-Stayed Suspension Bridges

With the increasing of their span , it's difficult for Suspension Bridge and Cable-Stayed Bridge to satisfy the demands in design because of their limits in structural property. Today Combined Cable-Stayed Suspension Bridge (C.C.S.B) is seen as a new type of bridge that can have more large spans , so , many experts and scholars in the world put forward many different structural systems in order to find out better structural system that can fit with structural property very well . But its structural system and calculating model and system's compassion technology are the key problems to the combined bridge.Seeing that there is the only one practice of C.C.S.B (Wujiang Bridge) in the world , which has been built in 1997 . So, in the end the paper sets up that the Pre-press and Press-stress C.C.S.B is the best by comparing some different C.C.S.B systems as to some problems that are paid close attentions by many experts and scholars , and analyzes its beam capacity too. Lastly, the paper puts the Pre-press and Pre-stress C.C.S.B into MOXILA channel bridge that is the hot spot in the bridge area to offer some ways and references to the development of super-large C.C.S.B.