Girder transporting and erecting equipment and construction method for erecting box girder

Abstract

The invention provides girder transporting and erecting equipment and a construction method for erecting a box girder, and relates to the technical field of bridge construction. The girder transporting and erecting equipment comprises a girder transporting vehicle, a bridge erecting machine, and a butt joint structure, wherein the girder transporting vehicle includes a vehicle body and a girder carrying trolley, the vehicle body is provided with a first track, and the girder carrying trolley is arranged on the first track and is suitable for carrying a box girder segment or a half-width box girder to walk along the first track; the bridge erecting machine includes a transportation platform and a machine body, the transportation platform is connected with the machine body and is suitable for bearing at least part of the machine body, a second track is arranged on a platform body of the transportation platform, and the second track is suitable for walking of the girder carrying trolley;and the butt joint structure is suitable for being connected with the girder transporting vehicle and the bridge erecting machine, after the girder transporting vehicle is connected with the bridge erecting machine, the first track is aligned with the second track, and the girder carrying trolley is suitable for walking from the first track to the second track. After the girder transporting vehicle and the bridge erecting machine are connected through the butt joint structure, the box girder segment is transferred to the transporting platform from the girder transporting vehicle to be assembled, a requirement for box girder replacement of an existing line is met, and construction safety can be improved.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a construction method for transporting and erecting girder equipment and erecting box girders. Background technique [0002] With the passage of time, some line bridges built in my country in the early stage have approached the design rated life. In addition to normal maintenance, it is necessary to repair some box girders that do not meet the use requirements or have been damaged on the basis of not destroying the existing lines. Make a replacement. The carrying capacity of the existing lines is limited and cannot meet the transportation of large-tonnage box girders, especially in special construction conditions such as mountains, canyons, and rivers, or when there is a need to replace beams with spans of 24m, 36m and greater, construction safety is particularly important. [0003] When replacing the box girder on the existing line, the concrete box girder is general...

AI Technical Summary

Problems solved by technology

[0004] The girder truck and the bridge erecting machine of the existing girder transport equipment are integrated, which are generally limited to erecting full-hole box girders with large dead weight, and cannot transfer and assemble the box girder segments before hoisting, which cannot meet the requirements of existing line replacement. box girder needs

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