Beam feeding method suitable for small-curve-radius girder erection

Abstract

The invention discloses a beam feeding method suitable for small-curve-radius girder erection. The method includes the following steps that 1, a double-guide-girder bridge girder erection machine is in place, and a girder transport vehicle transports to-be-erected beams to the region between two girders at the tail of the bridge girder erection machine; 2, front main support legs and rear main support legs of the bridge girder erection machine are lifted to make the girders lift relative to the bridge floor, and the distance between the bottom of the girders and the bridge floor meets the transportation height of the transverse direction of a bridge; 3, two travelling jacks of the bridge girder erection machine hoist the to-be-erected beams, and there are gaps between the tops of the to-be-erected beams and the bottoms of the girders; 4, one travelling jack hoists the to-be-erected beams to move to the left of the transverse direction of the bridge, the other travelling jack hoists theto-be-erected beams to move to the right of the transverse direction of the bridge to cause deflexion of the axes of the to-be-erected beams relative to the axes of the girders, an included angle isformed, and beam feeding is completed. The beam feeding method suitable for small-curve-radius girder erection can adjust the deflexion angles of the to-be-erected beams relative to the girders, so that the small-curve-radius girder erection condition can be met, the method has simple steps, operation is convenient, and the effects are good.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a beam feeding method suitable for erecting beams with small radius curves. Background technique [0002] The design feature of small-radius bridges is that the angle between the centerline of the beam surface of the front and rear bridges is relatively large. Therefore, the angle between the centerline of the beam transport vehicle and the centerline of the bridge erecting machine is also relatively large when using the tail feeding girder facility. The larger the small included angle, the more the centerline of the girder to be erected deviates from the centerline of the double-guided girder bridge erecting machine. [0003] In order to increase the stability of the traditional double-guided bridge erecting machine, the design of the front and rear main outriggers is low, and the bridge erection construction adopts the beam feeding method in which the bridge to be erected is ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings that the existing double-guided girder erecting machine and its corresponding beam feeding method in the prior art cannot meet the construction conditions of ultra-small radius prefabricated bridge erection, and to provide a Beam Feeding Method for Curved Beams with Small Radius

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