Long continuous structural steel box beam or combination box beam construction method

• Main Authors: ZHANG JUNWU, LI FANGMIN, CHEN LIPING, YIN XIUKAI, WEI JUN, ZHANG HANHONG, HUANG YONG, QIN SHUNQUAN
• Format: Patent
• Language: Chinese; English
• Published: 18.02.2009
• Subjects: ASSEMBLY OF BRIDGES; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS; OR VIADUCTS

The invention discloses a long continuous steel box girder or combined box girder construction method, including the following steps: 1, segment division and plate unit division; 2, butt welding the fulcrum segmental box girders and standard segmental box girders at a prefabrication plant, namely, pre-splicing the segmental box girders of a full span box girder and the first box girder segment of the adjacent span box girder through <N+1>long line method on a segmental box girder moulding bed on which plane curves and pre-camber are arranged; marking the box girder segments, taking away the segmental box girders of the full span box girder, leaving the first box girder segment of the adjacent span box girder, and continuing to splice and weld the segmental box girders of the rest full span box girders; 3, generally assembling the full span box girders in the prefabrication plant. The invention adopts full span prefabrication and arrangement to construct a long continuous steel box girder or combined box girde