Main girder of bridge, bridge with said main girder and construction method of said bridge beam

摘要

PROBLEM TO BE SOLVED To provide a main girder of a bridge which can be easily assembled.SOLUTION: A main girder 1 to which a plurality of BH steels 2 are connected in the longitudinal direction, each BH steel 2 has a protruding portion 21a protruding into the BH steel 2 on the other side and overlapping the counterweight web 21 with a web 21, and each projecting portion 21a is provided with one round hole 21b which overlaps with each other, a cylindrical fixing pin 21c is inserted into each of the overlapped circular holes 21b, The main girder 1 of the bridge characterized in that the BH steel 2 is connected.BACKGROUND OF THE INVENTION