Arc-shaped steel box girder construction method

The invention relates to the building construction field, and provides an arc-shaped steel box girder construction method; the method comprises the following steps: setting a first connecting crossbeam and a second connecting crossbeam in a construction site, dividing a whole arc-shaped steel box girder into three sections, and respectively welding the three sections with the first and second connecting crossbeams, thus forming the arc-shaped steel box girder. The arc-shaped steel box girder is welded in sections, and each steel box girder section is singly processed according to demands, so the welding and assembling are convenient, and the whole hoist process needs fewer cranes for common operations, thus reducing manpower and material cost investment. In addition, the arc-shaped steel box girder can be segmented into small volume sections, so less land can be occupied in construction, thus causing no traffic jams. 本发明适用于建筑施工领域，提供了种弧形钢箱梁的施工方法，其通过先在需要施工的场地处设置第连接横梁和第二连接横梁，然后将整个弧形钢箱梁分成三段，并分别与所述第连接横梁和第二连接横梁焊接固定