Bridge rotating construction rotating spherical hinge with self-centering function

Abstract

Provided is a bridge rotating construction rotating spherical hinge with a self-centering function. An upper spherical hinge convex spherical surface is matched with a lower spherical hinge concave spherical surface. Automatic positioning of a structure is achieved under the effect of the self weight and vertical loads, intermediate hinge pins are not arranged, the machining, manufacturing and assembling cost is saved, the manufacturing period is shortened, and the situation that hinge pins are stuck in the rotating process is avoided. Through improvement of the spherical hinge structure, the structural rigidity of the spherical hinge is improved, the spherical hinge can be conveniently mounted, the requirement for rotating construction of a high-bearing bridge structure is met, and construction convenience and reliability are improved.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, and relates to a structural device used in the construction of a bridge by a swivel method, capable of bearing vertical loads and realizing the swivel of the bridge by self-positioning along the structure centroid. Background technique [0002] Bridge construction often needs to cross places such as railways, highways, canyons, etc. Due to the constraints of transportation or the inability to construct above them, these places must be constructed by prefabricating beams. At present, the construction of this type of bridge mainly adopts the beam body horizontal push or swivel construction method. The beam body horizontal push construction is divided into two types: horizontal push and vertical push. Both methods need to build temporary piers and temporary slides. On the slider, the slider is connected to the tension jack on the opposite side through a wire rope, and the beam body is slo...

AI Technical Summary

Problems solved by technology

[0003] The swivel uses concrete hinges, swivel flat hinges and swivel spherical hinges as the rotating components. Among them, the concrete hinges have low bearing capacity, large structure, and large friction coefficient, which are not suitable for large-tonnage swivel bridges.

The structure of the swivel flat hinge has poor rigidity, uneven force, poor centering performance, and easy to get stuck when rotating, so it is rarely used.

Images