Steel box girder scattered-splicing sliding device and installation method

Abstract

The invention discloses a steel box girder scattered-splicing sliding device and an installation method and relates to the technical field of continuous steel box girder bridge construction. The steel box girder scattered-splicing sliding device and the installation method are high in adaptability, safe and reliable in construction and capable of saving large-size devices and improving the work efficiency. The device comprises a steel tube support (2), a bearing connecting beam (3) arranged at the top of the steel tube support and a sliding rail structure installed on the bearing connecting beam (3). The steel box girder scattered-splicing sliding installation method comprises the following steps that the support is erected, the sliding rail structure is installed, steel box girders are hoisted and welded in a spliced mode section by section in the hoisting position and slide to a designed position, the axes of the sectioned box girders are designed, elevation is adjusted, girth welding is conducted, and the girders are detached. The steel box girder scattered-splicing sliding device is high in adaptability, safe and reliable. The sparse sliding support is erected so that influence on the ground by construction can be reduced, foundation treatment and support usage can be reduced, the large-size devices can be omitted, the two sides of the hoisted position can be constructed at the same time, and the work efficiency of large-size hoisting devices can be improved.

Description

technical field [0001] The invention relates to the technical field of construction of continuous steel box girder bridges, in particular to a steel box girder bulk sliding device and an installation method. Background technique [0002] With the rapid development of cities and the improvement of economic level, steel box girder bridges are more and more widely used in municipal road reconstruction or new construction projects. Because of their many advantages, they are often used to cross existing railways, highways, houses, dams and other buildings Objects, geographical location and ground conditions are often extremely complex, so higher requirements are put forward for the construction. During the construction period, it is often necessary to ensure the normal use of the functions of the lower buildings that will be crossed, and at the same time, the installation and construction should be completed quickly and safely. [0003] The traditional overall hoisting method is ...

AI Technical Summary

Problems solved by technology

[0003] The traditional overall hoisting method is often limited by transportation conditions, structural weight, lifting equipment, etc., while the loose assembly method that needs to build dense supports generally needs to stop the use of the lower building and the project cost is high, while the ordinary push method construction is in It cannot be implemented under special conditions such as partial reconstruction and restricted space at the front and rear ends

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