Constrution Technique Of Prestressed Concrete Continous Long-Span Rigid-Fram Bridge

Dongpu SuperLange Bridge ,with total length of 1093.5m ,double-direction six-lane sigle layer, separated between the up direction and the down direction ,is the key one of super large bridges of Guangzhou outside ring expressway. The foundation of the bridge is the dug pile with the diameter of 1.5-2.5m,the superstructure is the continuous rigid frame,double thin-walls pier is adopted as the pier of the bridge ,the column pier as the side pier. The construction characteristic of the bridge is that the foundation is under the deep water and the span is larger.the paper sums up the construction technique of dongpu super large bridge all-sidedle and gives the detailed account of a series of construction technique and achievements such as: layout of large-type temporary facilities, The orientation, striking and draw technique of the steel protection cylinder ,the testing technique of the cast-in place pile, the construction of the deep water base salab, the construction of the box beam, the design and practice of cable-stayed and vertical hanging basket etc,which is of the referenced value for the construction of the same type bridge.