Hinge for installing bridge cable tower and method for installing hinge

Abstract

The invention discloses a hinge for installing a bridge cable tower and a method for installing the hinge. The hinge comprises a lower hinge seat, a hinge shaft and an upper hinge seat, wherein the upper hinge seat is connected with the lower hinge seat through the hinge shaft and can freely rotate relative to the lower hinge seat. The method comprises the following steps of: fixing the lower hinge seat; connecting the upper hinge seat and the lower hinge seat through a dummy shaft, and welding a cable tower ground first-section box body; and replacing the dummy shaft with the hinge shaft. The cable tower hinge is used for the whole vertical rotation of the cable tower, the lower hinge seat of the hinge is fixed on a lower hinge seat anchor plate, and the lower hinge seat anchor plate is welded and fixed with a steel tower basic section embedded into a concrete tower foundation; and the hinge shaft is manufactured by processing 40Cr steel and hardening and tempering, and lug plates of the upper hinge seat and the lower hinge seat are made of Q345B steel plates and are subjected to non-destructive flaw detection after being manufactured, so that the hinge shaft is safely stressed and reliably used in the whole vertical rotation process of the cable tower, guarantee is provided for the whole vertical rotation of the cable tower, the cable tower is installed in a time-saving and labor-saving mode, and installation accuracy is high.

Description

technical field [0001] The invention relates to a device for overall vertical rotation of a cable tower for a bridge and an installation method thereof, in particular to a heavy hinge for installing a bridge cable tower and an installation method thereof. Background technique [0002] At present, in bridge engineering, cable-stayed bridges or suspension bridges are mostly used for long-span bridges, and for the sake of beauty, the construction and installation angles of the cable towers are also various, which puts forward requirements for the installation and erection of the cable towers, and most of them use erection bridges. The hoisting method of full-height brackets or back ropes piece by piece is time-consuming and labor-intensive, requiring super-large lifting machinery. At the same time, it increases the risk of workers working at heights, and it is difficult to control the overall welding quality and assembly accuracy, especially in When the cable tower has a certai...

AI Technical Summary

Problems solved by technology

[0002] At present, in bridge engineering, cable-stayed bridges or suspension bridges are mostly used for long-span bridges, and for the sake of beauty, the construction and installation angles of the cable towers are also various, which puts forward requirements for the installation and erection of the cable towers, and most of them use erection bridges. The hoisting method of full-height brackets or back ropes piece by piece is time-consuming and labor-intensive, requiring super-large lifting machinery. At the same time, it increases the risk of workers working at heights, and it is difficult to control the overall welding quality and assembly accuracy, especially in When the cable tower has a certain installation inclination angle, the construction is more difficult

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