JOINING-SECTION STRUCTURE OF POST AND GIRDER IN RAILWAY VIADUCT AND RAILWAY VIADUCT USING JOINING-SECTION STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a structure which has required load-carrying performance and rigidity to horizontal force in an earthquake and which can also absorb an error on the execution of works at a site in the joining-section structure of a space rigid frame type railway viaduct composed of a round-shaped steel-pipe main girder, a concrete-infilled steel pipe post and a steel horizontal girder.;SOLUTION: A socket steel pipe 3 is arranged so as to penetrate the underside 1' of a round-shaped steel-pipe main girder 1 and project to a lower section, and then welded and joined at the position of the underside 1', and the upper end of the socket steel pipe 3 is butt-welded and joined to the top face 1" of the round-shaped steel-pipe main girder 1. The projecting section 3' of the socket steel pipe 3 is inserted into the steel pipe post 2, the insides of these projecting section 3' and post 2 are filled with concrete 6, and both steel pipes 2, 3 are fixed mutually. A square-shaped steel pipe is butt-welded and joined to the round-shaped steel-pipe main girder 1 as the horizontal girder 4. A diaphragm 5 is installed into the round-shaped steel-pipe main girder 1 corresponding to the position of the butt-welding and joining, and the inside of the round-shaped steel-pipe main girder 1 between the diaphragm 5 is filled with concrete 6'.;COPYRIGHT: (C)2001,JPO