Self-floating transportation method of bridge box girder

Abstract

The invention relates to a self-floating transportation method of a bridge box girder, belonging to the field of bridge manufacturing technology. The transportation method comprises the steps of launching and riverway transportation, and is characterized in that the self-floating transportation of the box girder adopts box girder sealing, ramp launching and a method for transporting the self-floating box girder by a power boat; the box girder sealing adopts a steel plate for hole-sealing welding, the steel plate is used for seal-welding a hole and an opening on a diaphragm plate of the box girder; air pockets are distributed at the bottom of the box girder, air charging leads the air pockets to upbear the box girder; the ramp launching adopts a windlass for tightening steel wire ropes so as to control the glissade of the box girder, the air pockets are charged with air alternately, the box girder is moved and launching is carried out along the ramp; and after connection with a self-floating steel box, the power boat carries out transportation in riverways. The method has the advantages of being simple, convenient and practicable, saving time and labor, having low cost and being applicable to the self-floating transportation of steel box girder with large size and weight and the like.

Description

technical field [0001] The invention belongs to the technical field of bridge manufacturing, in particular to a self-floating transportation method for bridge box girders. Background technique [0002] At present, long-span bridges mostly adopt the form of steel structure box girders. The processing and production of steel structure box girder has high requirements on the site, and the available steel structure box girder processing site is often far away from the construction site. Because the processing site occupies a huge area, there is no available site in the bustling urban area. Even if the bridge is located in a newly developed area that is not prosperous, the vast majority of bridge steel box girders cannot Carry out the processing of the box girder at the position. The steel structure box girder has the characteristics of large volume and heavy weight, and the transportation of the steel structure box girder has become one of the key factors restricting the const...

AI Technical Summary

Problems solved by technology

Difficulties in land transportation: Car transportation can only be carried out on the premise of dividing the beam into sections, even after segmentation, the requirements for vehicle beams are very high; the requirements for roads are high, and ordinary roads and intersections are difficult to meet the transportation requirements; traffic control is required to cooperate and it is not suitable for long distances; Even if it is transported to the site, how to get off the car and install it is also a problem

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