A LATTICE GIRDER FOR TUNNEL CONSTRUCTION

摘要

PURPOSE: A lattice girder for tunnel construction with a stiffener is provided to remarkably improve fastening force and durability by installing a stiffener on the center of a fixing plate. CONSTITUTION: A lattice girder(100) for tunnel construction with a stiffener comprises a base frame(10), a first upper steel bar(12), second lower steel bars(12a), a fixing plate(20), a stiffener(30), and couplers. The fixing plate is attached to the steel bars and maintains the intervals of the steel bars. The stiffener is inserted into a hole(22) formed in the fixing plate and is welded to the fixing plate. The couplers couple the steel bars to the outline of the fixing plate.