Method for reducing welding deformation for steel-concrete composite bridge manufacturing

• Main Authors: HOU HUANHUAN, SONG FUYUN, LIU ZHAONING, ZHAO LONGKANG, GE YONGLI, WANG WEIZU
• Format: Patent
• Language: Chinese; English
• Published: 11.09.2020
• Subjects: ASSEMBLY OF BRIDGES; CLADDING OR PLATING BY SOLDERING OR WELDING; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; FIXED CONSTRUCTIONS; MACHINE TOOLS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METAL-WORKING NOT OTHERWISE PROVIDED FOR; OR VIADUCTS; PERFORMING OPERATIONS; PUNCHING METAL; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

The invention provides a method for reducing welding deformation for steel-concrete composite bridge manufacturing. The method comprises the following steps that a horizontally-placed bottom plate anda vertically-placed longitudinal beam are provided, the longitudinal beam is arranged in the arrangement direction of the bottom plate, and the bottom end of the longitudinal beam is in butt joint with the top end of the bottom plate to weld the butt joint end surface of the longitudinal beam and the bottom plate from the middle to the two sides at the same time. According to the method for reducing the welding deformation for steel-concrete composite bridge manufacturing, the welding sequence of rod pieces is adjusted, so that measures such as optimizing a jig frame for bridge manufacturing,adjusting the pre-camber value for manufacturing, optimizing the steel bridge structure design, and optimizing the manufacturing process reduce the chronic disease of the welding deformation, the problem of large welding defo