Bridge-hoisting method

Abstract

A method for hoist a bridge in accordance with that present invention, includes the following steps: leveling construction site, Hoisting Settings Entry, the hoisting equipment is towed to the bridgepier where the bridge deck needs to be placed by the towing truck, precast bridge slabs approach, A bridge deck is transported to the rear side of the hoisting equipment by a transport vehicle and placed diagonally, bridge slab translation, the bridge slab is pulled horizontally to the lifting point position by the traction equipment on the lifting equipment, The front end of the bridge slab is located between two piers, and the rear end is located on the outside of the bridge. Two fixed lifting points are arranged above the front end of the bridge slab. A lifting point capable of moving horizontally is arranged at the rear end of the bridge slab. Three lifting points are simultaneously lifted to lift the bridge slab to a height higher than the pier, and the bridge slab is rotated and placed. The invention solves the problem that the bridge slab is easy to be twisted in the air in the lifting process, and can keep the stability in the lifting process of the bridge slab, so that the bridge slab can not be twisted.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a bridge hoisting method. Background technique [0002] With the development of transportation, bridge erecting machinery and equipment have also been rapidly developed and applied, and the application of bridge erecting machines as indispensable equipment for erecting road bridges and railway bridges is becoming more and more extensive. The hoisting structure of the bridge erecting machine is an important part of the bridge erecting machine. It is responsible for the lifting of the bridge and is also the main load-bearing component of the bridge erecting machine. It plays a very important role in the lifting performance and work efficiency of the bridge erecting machine. The traditional bridge erecting machine has a lifting point at both ends of the hanging beam, and each lifting point is connected to a winch, and the hoisting machine drives the double lifting point ...

AI Technical Summary

Problems solved by technology

The double lifting point lifting operation is unstable. During the lifting process, it is easy to cause a series of problems such as the torsion of the beam body in the air, difficulty in positioning, and large force on the lifting beam, which may easily lead to damage to the lifting beam, and there are certain safety risks.

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