A continuous beam swivel construction booster and anti-overrotation device and construction method

Abstract

The invention discloses a boosting anti-overturning device for construction of a novel continuous beam swivel and a construction method. The device comprises device foundations, a main beam, a jack, alimiting stopping block, supporting feet, a circular ring-shaped slideway and continuous jacks. In the construction process of the device, the pair of supporting feet is selected according to the original position of a beam body, the device foundations are constructed on the two sides of the supporting feet, the main beam is placed in a groove, the main beam is abutted deadly by using the stopping block and a raised part, the jack is placed in front of the main beam to abut against the supporting feet, boosting is achieved by jacking and pushing the supporting feet, and the continuous jacks arranged on the left side and the right side of a lower bearing table drive a swivel to slide along the circular ring-shaped slideway. Once overturning happens on the swivel, the anti-overturning mainbeam is moved backwards, a rollback jack is mounted to jack and push the supporting feet in the reverse direction so that the overturning part can return back. The device is simple in principle and convenient to construct, integrates a boosting function, an anti-overturning function, an overturning rollback function and a horizontal limiting function together, and is suitable for construction of continuous beam swivels.

Description

technical field [0001] The invention relates to the technical field of long-span bridge construction, in particular to a continuous beam swivel construction boosting and over-rotation preventing device and construction method. Background technique [0002] Continuous girder swivel construction is generally the construction of cross bridges on existing railway lines. The construction process is generally selected to be carried out within the time point of the skylight, which is generally very short, and even only 30 minutes for some busy lines. During the construction process, the continuous beam swivel construction device can reasonably connect various processes and quickly respond to emergencies, which is a major challenge encountered in the current swivel construction process. [0003] At present, the swivel construction technology is relatively mature, and has been applied in the construction sites of large-span existing railway bridges. The continuous beam construction m...

AI Technical Summary

Problems solved by technology

However, there are still many technical problems to be solved in this field, such as how to conveniently realize the precise control of the key technical parameter of the rotation angle of the swivel body, and how to rotate the swivel body to the design position without causing horizontal displacement when adjusting the elevation of the beam surface, etc.

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