A method of erection of a bridge girder of a concrete bridge with a rigid frame structure and a temporary closure structure that can be used for that method.

摘要

To provide a method that can use constructed parts of a bridge girder as construction road when the concrete bridge girder with frame structure is constructed with cantilever overhang erection method.SOLUTION: A first lateral span part (8b) which is constructed earlier than a central span part (8a) located in the center of a frame structure part makes a connection of central span parts a horizontally force applicable temporary closure from after becoming a pin connection. After central closure is performed by rigid connection on the central span part, a second lateral span part (8c) which is constructed even later than that is center-closed, meanwhile, the first lateral span part is center-closed.SELECTED DRAWING: Figure 1