Bi-directional traction vertical rotation construction device for cable-stayed bridge steel arch tower

Abstract

The invention relates to a bridge construction device, specifically to a bi-directional traction vertical rotation construction device for a cable-stayed bridge steel arch tower. The bi-directional traction vertical rotation construction device for the cable-stayed bridge steel arch tower comprises a vertical rotation hinge, a skid-resistant support base, a steel arch tower assembly moulding bed, a vertical rotation frame assembly moulding bed, a vertical rotation frame, a vertical rotation frame hinge base, a front pull cable, a rear pull cable, a balance cable, and a stable cable; the skid-resistant support base is located on the bottom of a steel box girder; the steel arch tower assembly moulding bed is consist of multiple lattice steel columns; the vertical rotation frame assembly moulding bed is installed on the steel box girder; one end of the front pull cable is installed on the front pull cable anchoring point of the steel arch tower, and the other end of the front pull cable is hinged with the ear plate of the front end of the vertical rotation frame; one end of the rear pull cable is installed on the ear plate of the rear end of the vertical rotation frame, and the other end of the rear pull cable is hinged with the rear pull cable anchoring point of the steel box girder; and one end of the balance cable is hinged with the balance cable anchoring point of the steel arch tower, and the other end of the balance cable is hinged with the balance cable anchoring point of the steel box girder. The device is capable of achieving the goal of safely constructing, improving the project quality, shortening the construction period, and saving the construction cost.

Description

technical field [0001] The invention relates to a bridge construction device, in particular to a device for vertical rotation construction of a steel arch tower of a cable-stayed bridge with large size, large weight, small plane rigidity and small inclination angle. Background technique [0002] Due to the great aesthetics of the steel arch tower cable-stayed bridge, its design and application are becoming more and more extensive. However, due to the special structural shape and the limitation of on-site construction conditions, the installation of steel arch towers may not be constructed by conventional hoisting methods. Generally, the steel arch tower is assembled on the bridge deck first, and then turned to the design station. There are two commonly used swivel methods: one is to use the vertical lifting of the tower to perform the rotation, and the other is to use the tripod to lift the wrench to perform the rotation. The forming accuracy of the steel arch tower can be...

AI Technical Summary

Problems solved by technology

However, the vertical rotation construction also has the disadvantages of large construction load and high risk, and the risk increases with the increase of the size and weight of the steel arch tower of the cable-stayed bridge and the decrease of the plane stiffness and inclination angle

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